UPD23C64000JLGY-XXX-MJH-A [NEC]

MASK ROM, 4MX16, 100ns, MOS, PDSO48, 12 X 18 MM, LEAD FREE, PLASTIC, TSOP1-48;
UPD23C64000JLGY-XXX-MJH-A
型号: UPD23C64000JLGY-XXX-MJH-A
厂家: NEC    NEC
描述:

MASK ROM, 4MX16, 100ns, MOS, PDSO48, 12 X 18 MM, LEAD FREE, PLASTIC, TSOP1-48

有原始数据的样本ROM 光电二极管
文件: 总20页 (文件大小:149K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
DATA SHEET  
MOS INTEGRATED CIRCUIT  
μPD23C64000JL  
64M-BIT MASK-PROGRAMMABLE ROM  
8M-WORD BY 8-BIT (BYTE MODE) / 4M-WORD BY 16-BIT (WORD MODE)  
Description  
The μPD23C64000JL is a 67,108,864 bits mask-programmable ROM. The word organization is selectable (BYTE  
mode : 8,388,608 words by 8 bits, WORD mode : 4,194,304 words by 16 bits).  
The active levels of OE (Output Enable Input) can be selected with mask-option.  
The μPD23C64000JL is packed in 48-pin PLASTIC TSOP (I) and 44-pin PLASTIC SOP.  
Features  
Word organization  
8,388,608 words by 8 bits (BYTE mode)  
4,194,304 words by 16 bits (WORD mode)  
Operating supply voltage : VCC = 2.7 to 3.6 V  
Operating  
supply voltage  
VCC  
Package  
Access time  
ns (MAX.)  
Power supply current  
(Active mode)  
Standby current  
(CMOS level input)  
μA (MAX.)  
mA (MAX.)  
3.0 V ± 0.3 V  
TSOP (I)  
SOP  
100  
120  
90  
40  
35  
55  
50  
30  
3.3 V ± 0.3 V  
TSOP (I)  
SOP  
100  
Remark The access time and power supply current vary depending on the package type.  
The information in this document is subject to change without notice. Before using this document, please  
confirm that this is the latest version.  
Not all products and/or types are available in every country. Please check with an NEC Electronics  
sales representative for availability and additional information.  
Document No. M16084EJ5V0DS00 (5th edition)  
Date Published February 2006 NS CP (K)  
Printed in Japan  
2002  
The mark <R> shows major revised points.  
The revised points can be easily searched by copying an "<R>" in the PDF file and specifying it in the "Find what:" field.  
μPD23C64000JL  
Ordering Information  
Part number  
Package  
μPD23C64000JLGY-xxx-MJH  
μPD23C64000JLGY-xxx-MKH  
μPD23C64000JLGX-xxx  
48-pin PLASTIC TSOP (I) (12 × 18) (Normal bent)  
48-pin PLASTIC TSOP (I) (12 × 18) (Reverse bent)  
44-pin PLASTIC SOP (15.24 mm (600))  
μPD23C64000JLGY-xxx-MJH-A  
μPD23C64000JLGY-xxx-MKH-A  
μPD23C64000JLGX-xxx-A  
48-pin PLASTIC TSOP (I) (12 × 18) (Normal bent)  
48-pin PLASTIC TSOP (I) (12 × 18) (Reverse bent)  
44-pin PLASTIC SOP (15.24 mm (600))  
<R>  
<R>  
<R>  
Remarks 1. xxx : ROM code suffix No.  
2. Products with -A at the end of the part number are lead-free products.  
<R>  
2
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Pin Configurations  
/xxx indicates active low signal.  
48-pin PLASTIC TSOP (I) (12 × 18) (Normal bent)  
[ μPD23C64000JLGY-xxx-MJH ]  
<R>  
[ μPD23C64000JLGY-xxx-MJH-A ]  
Marking Side  
WORD, /BYTE  
A16  
A15  
A14  
A13  
A12  
A11  
A10  
A9  
1
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
GND  
GND  
O15, A1  
O7  
2
3
4
5
O14  
O6  
6
7
O13  
O5  
8
9
O12  
O4  
A8  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
A19  
A21  
A20  
A18  
A17  
A7  
V
CC  
CC  
V
NC  
O11  
O3  
O10  
A6  
O2  
A5  
O9  
A4  
O1  
A3  
O8  
A2  
O0  
A1  
/OE or OE or DC  
GND  
A0  
/CE  
GND  
A0 to A21  
: Address inputs  
O0 to O7, O8 to O14 : Data outputs  
O15, A1  
: Data output 15 (WORD mode),  
LSB Address input (BYTE mode)  
: Mode select  
WORD, /BYTE  
/CE  
: Chip Enable  
/OE or OE  
VCC  
: Output Enable  
: Supply voltage  
: Ground  
GND  
NC Note  
: No Connection  
: Don’t Care  
DC  
Note Some signals can be applied because this pin is not connected to the inside of the chip.  
Remark Refer to Package Drawings for the 1-pin index mark.  
3
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
48-pin PLASTIC TSOP (I) (12 × 18) (Reverse bent)  
[ μPD23C64000JLGY-xxx-MKH ]  
<R>  
[ μPD23C64000JLGY-xxx-MKH-A ]  
Marking Side  
GND  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
1
2
WORD, /BYTE  
A16  
A15  
A14  
A13  
A12  
A11  
A10  
A9  
GND  
O15, A1  
3
O7  
4
O14  
5
O6  
6
O13  
7
O5  
8
O12  
9
O4  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
A8  
VCC  
A19  
A21  
A20  
A18  
A17  
A7  
VCC  
NC  
O11  
O3  
O10  
O2  
A6  
O9  
A5  
O1  
A4  
O8  
A3  
O0  
/OE or OE or DC  
GND  
A2  
A1  
A0  
GND  
/CE  
A0 to A21  
: Address inputs  
O0 to O7, O8 to O14 : Data outputs  
O15, A1  
: Data Output 15 (WORD mode),  
LSB Address input (BYTE mode)  
: Mode select  
WORD, /BYTE  
/CE  
: Chip Enable  
/OE or OE  
VCC  
: Output Enable  
: Supply voltage  
: Ground  
GND  
NC Note  
: No Connection  
: Don’t Care  
DC  
Note Some signals can be applied because this pin is not connected to the inside of the chip.  
Remark Refer to Package Drawings for the 1-pin index mark.  
4
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
44-pin PLASTIC SOP (15.24 mm (600))  
[ μPD23C64000JLGX-xxx ]  
<R>  
[ μPD23C64000JLGX-xxx-A ]  
Marking Side  
A21  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
A20  
A19  
A8  
1
A18  
2
A17  
3
A7  
A9  
4
A6  
A10  
A11  
A12  
A13  
A14  
A15  
A16  
5
A5  
6
A4  
7
A3  
8
A2  
9
A1  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
A0  
/CE  
WORD, /BYTE  
GND  
GND  
O15, A1  
O7  
/OE or OE or DC  
O0  
O8  
O14  
O6  
O1  
O9  
O13  
O5  
O2  
O10  
O3  
O12  
O4  
O11  
VCC  
A0 to A21  
: Address inputs  
O0 to O7, O8 to O14 : Data outputs  
O15, A1  
: Data Output 15 (WORD mode),  
LSB Address input (BYTE mode)  
: Mode select  
WORD, /BYTE  
/CE  
: Chip Enable  
/OE or OE  
VCC  
: Output Enable  
: Supply voltage  
GND  
: Ground  
DC  
: Don’t Care  
Remark Refer to Package Drawings for the 1-pin index mark.  
5
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Input / Output Pin Functions  
Pin name  
Input / Output  
Input  
Function  
WORD, /BYTE  
The pin for switching WORD mode and BYTE mode.  
High level : WORD mode (4M-word by 16-bit)  
Low level : BYTE mode (8M-word by 8-bit)  
Address input pins.  
A0 to A21  
Input  
(Address inputs)  
A0 to A21 are used differently in the WORD mode and the BYTE mode.  
WORD mode (4M-word by 16-bit)  
A0 to A21 are used as 22 bits address signals.  
BYTE mode (8M-word by 8-bit)  
A0 to A21 are used as the upper 22 bits of total 23 bits of address signal.  
(The least significant bit (A1) is combined to O15.)  
Data output pins.  
O0 to O7, O8 to O14  
(Data outputs)  
Output  
O0 to O7, O8 to O14 are used differently in the WORD mode and the BYTE  
mode.  
WORD mode (4M-word by 16-bit)  
The lower 15 bits of 16 bits data outputs to O0 to O14.  
(The most significant bit (O15) combined to A1.)  
BYTE mode (8M-word by 8-bit)  
8 bits data outputs to O0 to O7 and also O8 to O14 are high impedance.  
O15, A1 are used differently in the WORD mode and the BYTE mode.  
WORD mode (4M-word by 16-bit)  
O15, A1  
Output, Input  
(Data output 15,  
LSB Address input)  
The most significant output data bus (O15).  
BYTE mode (8M-word by 8-bit)  
The least significant address bus (A1).  
/CE  
Input  
Input  
Chip activating signal.  
(Chip Enable)  
When the OE is active, output states are following.  
High level: High-Z  
Low level : Data out  
/OE or OE or DC  
(Output Enable, Don't Care)  
VCC  
Output enable signal. The active level of OE is mask option. The active level of  
OE can be selected from high active, low active and Don’t care at order.  
Supply voltage  
GND  
NC  
Ground  
Not internally connected (The signal can be connected).  
6
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Block Diagram  
O8  
O9  
O10 O11 O12 O13 O14 O15, A1  
O2  
O3 O4  
O5 O6 O7  
O0  
O1  
A0  
A1  
A2  
A3  
A4  
A5  
Output Buffer  
Y-Selector  
WORD, /BYTE  
/OE or OE or DC  
A6  
A7  
A8  
A9  
A10  
A11  
A12  
A13  
A14  
A15  
A16  
A17  
Memory Cell Matrix  
4,194,304 words by 16 bits /  
8,388,608 words by 8 bits  
/CE  
A18  
A19  
A20  
A21  
7
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Mask Option  
The active levels of output enable pin (/OE or OE or DC) are mask programmable and optional, and can be selected  
from among "0" "1" "×" shown in the table below.  
Option  
/OE or OE or DC  
OE active level  
0
1
×
/OE  
OE  
DC  
L
H
Don’t care  
Operation modes for each option are shown in the tables below.  
Operation mode (Option : 0)  
/CE  
L
/OE  
L
Mode  
Active  
Output state  
Data out  
High-Z  
H
H
H or L  
Standby  
High-Z  
Operation mode (Option : 1)  
/CE  
L
OE  
L
Mode  
Active  
Output state  
High-Z  
H
Data out  
High-Z  
H
H or L  
Standby  
Operation mode (Option : ×)  
/CE  
L
DC  
Mode  
Active  
Output state  
Data out  
High-Z  
H or L  
H or L  
H
Standby  
Remark L : Low level input  
H : High level input  
8
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Electrical Specifications  
Absolute Maximum Ratings  
Parameter  
Supply voltage  
Symbol  
VCC  
VI  
Condition  
Rating  
Unit  
V
–0.3 to +4.6  
Input voltage  
–0.3 to VCC + 0.3  
–0.3 to VCC + 0.3  
–10 to +70  
V
Output voltage  
VO  
V
Operating ambient temperature  
Storage temperature  
TA  
°C  
°C  
Tstg  
–65 to +150  
Caution Exposing the device to stress above those listed in Absolute Maximum Ratings could cause  
permanent damage. The device is not meant to be operated under conditions outside the limits  
described in the operational section of this specification. Exposure to Absolute Maximum Rating  
conditions for extended periods may affect device reliability.  
Capacitance (TA = 25 °C)  
Parameter  
Input capacitance  
Output capacitance  
Symbol  
CI  
Test condition  
MIN.  
TYP.  
MAX.  
10  
Unit  
pF  
f = 1 MHz  
CO  
12  
pF  
DC Characteristics (TA = 10 to +70 °C, VCC = 2.7 to 3.6 V)  
Parameter  
High level input voltage  
Low level input voltage  
Symbol  
VIH  
Test condition  
MIN.  
2.0  
TYP.  
MAX.  
VCC + 0.3  
+0.5  
Unit  
V
VIL  
VCC = 3.0 V ± 0.3 V  
–0.3  
–0.3  
2.4  
V
VCC = 3.3 V ± 0.3 V  
IOH = –100 μA  
+0.8  
High level output voltage  
Low level output voltage  
Input leakage current  
Output leakage current  
Power supply current  
VOH  
VOL  
ILI  
V
V
IOL = 2.1 mA  
0.4  
+10  
+10  
40  
VI = 0 V to VCC  
–10  
–10  
μA  
μA  
mA  
ILO  
VO = 0 V to VCC, Chip deselected  
ICC1  
/CE = VIL  
VCC = 3.0 V ± 0.3 V TSOP (I)  
(Active mode),  
IO = 0 mA  
SOP  
VCC = 3.3 V ± 0.3 V TSOP (I)  
SOP  
35  
55  
50  
Standby current  
ICC3  
/CE = VCC – 0.2 V (Standby mode)  
30  
μA  
9
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
AC Characteristics (TA = 10 to +70 °C, VCC = 2.7 to 3.6 V)  
Parameter  
Symbol  
Test condition  
VCC = 3.0 V ± 0.3 V  
MIN. TYP. MAX.  
VCC = 3.3 V ± 0.3 V  
MIN. TYP. MAX.  
Unit  
ns  
Address access time  
tACC  
TSOP (I)  
100  
120  
10  
90  
100  
10  
SOP  
Address skew time  
tSKEW  
tCE  
Note  
ns  
ns  
Chip enable access time  
TSOP (I)  
SOP  
100  
120  
25  
90  
100  
25  
Output enable access time  
Output hold time  
tOE  
tOH  
tDF  
tWB  
ns  
ns  
ns  
ns  
0
0
0
0
Output disable time  
25  
25  
90  
WORD, /BYTE access time  
TSOP (I)  
SOP  
100  
120  
100  
Note tSKEW indicates the following three types of time depending on the condition.  
1) When switching /CE from high level to low level, tSKEW is the time from the /CE low level input point until the  
next address is determined.  
2) When switching /CE from low level to high level, tSKEW is the time from the address change start point to the  
/CE high level input point.  
3) When /CE is fixed to low level, tSKEW is the time from the address change start point until the next address is  
determined.  
Since specs are defined for tSKEW only when /CE is active, tSKEW is not subject to limitations when /CE is  
switched from high level to low level following address determination, or when the address is changed after /CE  
is switched from low level to high level.  
Remark tDF is the time from inactivation of Chip Enable input (/CE) or Output Enable input (/OE or OE) to  
high impedance state output.  
AC Test Conditions  
Input waveform (Rise / Fall Time 5 ns)  
1.4 V  
Test points  
1.4 V  
Output waveform  
1.4 V  
Test points  
1.4 V  
Output load  
1 TTL + 100 pF  
10  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Cautions on power application  
To ensure normal operation, always apply power using /CE following the procedure shown below.  
1) Input a high level to /CE during and after power application.  
2) Hold the high level input to /CE for 200 ns or longer (wait time).  
3) Start normal operation after the wait time has elapsed.  
Power Application Timing Chart 1 (When /CE is made high at power application)  
Wait time  
Normal operation  
/CE (Input)  
200 ns or longer  
V
CC  
Power Application Timing Chart 2 (When /CE is made high after power application)  
Wait time  
Normal operation  
/CE (Input)  
200 ns or longer  
V
CC  
Caution Other signals can be either high or low during the wait time.  
11  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Read Cycle Timing Chart  
t
SKEW  
t
SKEW  
tSKEW  
A0 to A21,  
(Input)  
A1 Note1  
t
ACC  
t
ACC  
tACC  
/CE (Input)  
Note2  
Note2  
tDF  
t
CE  
t
DF  
/OE or OE (Input)  
t
OE  
t
OH  
t
OH  
tOH  
High-Z  
High-Z  
O0 to O7,  
(Input)  
Data out  
Data out  
Data out  
O8 to O15 Note3  
Notes 1. During WORD mode, A1 is O15.  
2. tDF is the time from inactivation of Chip Enable input (/CE) or Output Enable input (/OE or OE) to  
high impedance state output.  
3. During BYTE mode, O8 to O14 are high impedance and O15 is A1.  
WORD, /BYTE Switch Timing Chart  
High-Z  
High-Z  
A–1 (Input)  
(Input)  
WORD, /BYTE  
t
OH  
tACC  
tOH  
tWB  
O0 to O7 (Output)  
O8 to O15 (Output)  
Data Out  
Data Out  
High-Z  
Data Out  
Data Out  
t
DF  
Data Out  
Remark Chip Enable (/CE) and Output Enable (/OE or OE) : Active.  
12  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Package Drawings  
48-PIN PLASTIC TSOP(I) (12x18)  
detail of lead end  
1
48  
F
G
R
Q
L
24  
25  
S
E
P
I
A
J
C
S
B
M
M
D
N
S
K
NOTES  
ITEM MILLIMETERS  
1. Each lead centerline is located within 0.10 mm of  
its true position (T.P.) at maximum material condition.  
A
B
C
D
E
F
G
I
12.0 0.1  
0.45 MAX.  
0.5 (T.P.)  
0.22 0.05  
0.1 0.05  
1.2 MAX.  
1.0 0.05  
16.4 0.1  
0.8 0.2  
0.145 0.05  
0.5  
2. "A" excludes mold flash. (Includes mold flash : 12.4 mm MAX.)  
J
K
L
M
N
P
0.10  
0.10  
18.0 0.2  
+5°  
3°  
Q
3°  
R
S
0.25  
0.60 0.15  
S48GY-50-MJH1-1  
13  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
48-PIN PLASTIC TSOP(I) (12x18)  
detail of lead end  
1
48  
E
S
L
Q
R
G
24  
25  
S
F
K
N
S
M
A
D
M
B
C
I
J
P
NOTES  
1. Each lead centerline is located within 0.10 mm of  
its true position (T.P.) at maximum material condition.  
ITEM MILLIMETERS  
A
B
C
D
E
F
G
I
12.0 0.1  
0.45 MAX.  
0.5 (T.P.)  
0.22 0.05  
0.1 0.05  
1.2 MAX.  
1.0 0.05  
16.4 0.1  
0.8 0.2  
0.145 0.05  
0.5  
2. "A" excludes mold flash. (Includes mold flash : 12.4 mm MAX.)  
J
K
L
M
N
P
0.10  
0.10  
18.0 0.2  
+5°  
3°  
Q
3°  
R
S
0.25  
0.60 0.15  
S48GY-50-MKH1-1  
14  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
44-PIN PLASTIC SOP (15.24 mm (600))  
44  
23  
detail of lead end  
P
1
22  
A
H
I
F
J
G
S
B
C
N
S
L
K
D
M
M
E
NOTE  
ITEM MILLIMETERS  
Each lead centerline is located within 0.12 mm of  
its true position (T.P.) at maximum material condition.  
+0.4  
27.83  
A
0.05  
B
C
0.78 MAX.  
1.27 (T.P.)  
+0.08  
0.42  
D
0.07  
E
F
G
H
I
0.15 0.1  
3.0 MAX.  
2.7 0.05  
16.04 0.3  
13.24 0.1  
1.4 0.2  
J
+0.08  
0.22  
K
0.07  
L
M
N
0.8 0.2  
0.12  
0.10  
+7°  
3°  
P
3°  
P44GX-50-600A-4  
15  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Recommended Soldering Conditions  
Please consult with our sales offices for soldering conditions of the μPD23C64000JL.  
Types of Surface Mount Device  
μPD23C64000JLGY-xxx-MJH : 48-pin PLASTIC TSOP (I) (12 × 18) (Normal bent)  
μPD23C64000JLGY-xxx-MKH : 48-pin PLASTIC TSOP (I) (12 × 18) (Reverse bent)  
μPD23C64000JLGX-xxx  
: 44-pin PLASTIC SOP (15.24 mm (600))  
<R>  
<R>  
<R>  
μPD23C64000JLGY-xxx-MJH-A : 48-pin PLASTIC TSOP (I) (12 × 18) (Normal bent)  
μPD23C64000JLGY-xxx-MKH-A : 48-pin PLASTIC TSOP (I) (12 × 18) (Reverse bent)  
μPD23C64000JLGX-xxx-A  
: 44-pin PLASTIC SOP (15.24 mm (600))  
16  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
Revision History  
Edition/  
Page  
Previous  
Type of  
revision  
Location  
Description  
Date  
This  
(Previous edition This edition)  
edition  
p.2  
edition  
p.1  
5h edition/  
Feb. 2006  
Addition  
Addition  
Addition  
Ordering Information  
Pin Configuration  
Recommended Soldering  
Conditions  
Lead-free products have been added  
Lead-free products have been added  
Lead-free products have been added  
pp.3-5  
p.16  
pp.2-4  
p.15  
17  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
[MEMO]  
18  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
NOTES FOR CMOS DEVICES  
VOLTAGE APPLICATION WAVEFORM AT INPUT PIN  
1
Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the  
CMOS device stays in the area between VIL (MAX) and VIH (MIN) due to noise, etc., the device may  
malfunction. Take care to prevent chattering noise from entering the device when the input level is fixed,  
and also in the transition period when the input level passes through the area between VIL (MAX) and  
VIH (MIN).  
HANDLING OF UNUSED INPUT PINS  
2
Unconnected CMOS device inputs can be cause of malfunction. If an input pin is unconnected, it is  
possible that an internal input level may be generated due to noise, etc., causing malfunction. CMOS  
devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed  
high or low by using pull-up or pull-down circuitry. Each unused pin should be connected to VDD or GND  
via a resistor if there is a possibility that it will be an output pin. All handling related to unused pins must  
be judged separately for each device and according to related specifications governing the device.  
3
PRECAUTION AGAINST ESD  
A strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and  
ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as  
much as possible, and quickly dissipate it when it has occurred. Environmental control must be  
adequate. When it is dry, a humidifier should be used. It is recommended to avoid using insulators that  
easily build up static electricity. Semiconductor devices must be stored and transported in an anti-static  
container, static shielding bag or conductive material. All test and measurement tools including work  
benches and floors should be grounded. The operator should be grounded using a wrist strap.  
Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for  
PW boards with mounted semiconductor devices.  
4
STATUS BEFORE INITIALIZATION  
Power-on does not necessarily define the initial status of a MOS device. Immediately after the power  
source is turned ON, devices with reset functions have not yet been initialized. Hence, power-on does  
not guarantee output pin levels, I/O settings or contents of registers. A device is not initialized until the  
reset signal is received. A reset operation must be executed immediately after power-on for devices  
with reset functions.  
5
POWER ON/OFF SEQUENCE  
In the case of a device that uses different power supplies for the internal operation and external  
interface, as a rule, switch on the external power supply after switching on the internal power supply.  
When switching the power supply off, as a rule, switch off the external power supply and then the  
internal power supply. Use of the reverse power on/off sequences may result in the application of an  
overvoltage to the internal elements of the device, causing malfunction and degradation of internal  
elements due to the passage of an abnormal current.  
The correct power on/off sequence must be judged separately for each device and according to related  
specifications governing the device.  
6
INPUT OF SIGNAL DURING POWER OFF STATE  
Do not input signals or an I/O pull-up power supply while the device is not powered. The current  
injection that results from input of such a signal or I/O pull-up power supply may cause malfunction and  
the abnormal current that passes in the device at this time may cause degradation of internal elements.  
Input of signals during the power off state must be judged separately for each device and according to  
related specifications governing the device.  
19  
Data Sheet M16084EJ5V0DS  
μPD23C64000JL  
These commodities, technology or software, must be exported in accordance  
with the export administration regulations of the exporting country.  
Diversion contrary to the law of that country is prohibited.  
The information in this document is current as of February, 2006. The information is subject to  
change without notice. For actual design-in, refer to the latest publications of NEC Electronics data  
sheets or data books, etc., for the most up-to-date specifications of NEC Electronics products. Not  
all products and/or types are available in every country. Please check with an NEC Electronics sales  
representative for availability and additional information.  
No part of this document may be copied or reproduced in any form or by any means without the prior  
written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may  
appear in this document.  
NEC Electronics does not assume any liability for infringement of patents, copyrights or other intellectual  
property rights of third parties by or arising from the use of NEC Electronics products listed in this document  
or any other liability arising from the use of such products. No license, express, implied or otherwise, is  
granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others.  
Descriptions of circuits, software and other related information in this document are provided for illustrative  
purposes in semiconductor product operation and application examples. The incorporation of these  
circuits, software and information in the design of a customer's equipment shall be done under the full  
responsibility of the customer. NEC Electronics assumes no responsibility for any losses incurred by  
customers or third parties arising from the use of these circuits, software and information.  
While NEC Electronics endeavors to enhance the quality, reliability and safety of NEC Electronics products,  
customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To  
minimize risks of damage to property or injury (including death) to persons arising from defects in NEC  
Electronics products, customers must incorporate sufficient safety measures in their design, such as  
redundancy, fire-containment and anti-failure features.  
NEC Electronics products are classified into the following three quality grades: "Standard", "Special" and  
"Specific".  
The "Specific" quality grade applies only to NEC Electronics products developed based on a customer-  
designated "quality assurance program" for a specific application. The recommended applications of an NEC  
Electronics product depend on its quality grade, as indicated below. Customers must check the quality grade of  
each NEC Electronics product before using it in a particular application.  
"Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio  
and visual equipment, home electronic appliances, machine tools, personal electronic equipment  
and industrial robots.  
"Special": Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster  
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed  
for life support).  
"Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life  
support systems and medical equipment for life support, etc.  
The quality grade of NEC Electronics products is "Standard" unless otherwise expressly specified in NEC  
Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in applications  
not intended by NEC Electronics, they must contact an NEC Electronics sales representative in advance to  
determine NEC Electronics' willingness to support a given application.  
(Note)  
(1) "NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its  
majority-owned subsidiaries.  
(2) "NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as  
defined above).  
M8E 02. 11-1  

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