AT27BV020-90VC [ATMEL]
2-Megabit 256K x 8 Unregulated Battery-Voltage High Speed OTP EPROM; 2兆位256K ×8不稳定电池电压高速OTP EPROM
| 型号： | AT27BV020-90VC |
| 厂家： | 
ATMEL |
| 描述： | 2-Megabit 256K x 8 Unregulated Battery-Voltage High Speed OTP EPROM |
| 文件： | 总10页 (文件大小：218K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Features
• Fast Read Access Time - 90 ns
• Dual Voltage Range Operation
– Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V ± 10% Supply Range
• Compatible with JEDEC Standard AT27C020
• Low Power CMOS Operation
– 20 µA max. (less than 1 µA typical) Standby for VCC = 3.6V
– 29 mW max. Active at 5 MHz for VCC = 3.6V
• Wide Selection of JEDEC Standard Packages
– 32-Lead PLCC
AT27BV020
– 32-Lead TSOP (8 x 20mm)
– 32-Lead VSOP (8 x 14mm)
– 42-Ball CBGA (8 x 8mm)
2-Megabit
(256K x 8)
• High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
Unregulated
Battery-Voltage™
High Speed
OTP EPROM
• Rapid™ Programming Algorithm - 100 µs/byte (typical)
• CMOS and TTL Compatible Inputs and Outputs
– JEDEC Standard for LVTTL and LVBO
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
Description
The AT27BV020 is a high-performance, low-power, low-voltage 2,097,152-bit one-
time programmable read only memory (OTP EPROM) organized as 256K by 8 bits. It
requires only one supply in the range of 2.7 to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using either regulated or unregulated battery
AT27BV020
power.
(continued)
CBGA Top View
Pin Configurations
1
2
3
4
5
6
7
Pin Name
A0 - A17
O0 - O7
CE
Function
Address
A
B
C
D
E
F
GND O6 VCC VCC O2 OE GND
A17 O7 O4 NC NC O0 CE
A10 NC O5 NC O3 O1 A0
A14 A13 A9 NC NC A6 A3
A16 A11 PGM NC A7 A4 A1
A15 A12 A8 NC VPP A5 A2
Outputs
Chip Enable
Output Enable
Program Strobe
OE
PGM
PLCC, Top View
TSOP, VSOP Top View
Type 1
0902A-A–10/97
Atmel’s innovative design techniques provide fast speeds
that rival 5V parts while keeping the low power consump-
tion of a 3V supply. At VCC = 2.7V, any byte can be
accessed in less than 90 ns. With a typical power dissipa-
tion of only 18 mW at 5 MHz and VCC = 3V, the AT27BV020
consumes less than one fifth the power of a standard 5V
EPROM. Standby mode supply current is typically less than
1 µA at 3V. The AT27BV020 simplifies system design and
stretches battery lifetime even further by eliminating the
need for power supply regulation
ming Algorithm reduces the time required to program the
part and guarantees reliable programming. Programming
time is typically only 100 µs/byte. The Integrated Product
Identification Code electronically identifies the device and
manufacturer. This feature is used by industry standard
programming equipment to select the proper programming
algorithms and voltages. The AT27BV020 programs
exactly the same way as a standard 5V AT27C020 and
uses the same programming equipment.
The AT27BV020 is available in industry standard JEDEC
approved one-time programmable (OTP) plastic PLCC,
TSOP and VSOP packages, as well as a 42-ball, 1 mm
pitch, plastic chip-scale Ball Grid Array package (CBGA).
All devices feature two-line control (CE, OE) to give design-
ers the flexibility to prevent bus contention.
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excursions.
Unless accommodated by the system design, these tran-
sients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1 µF high frequency,
low inherent inductance, ceramic capacitor should be uti-
lized for each device. This capacitor should be connected
between the VCC and Ground terminals of the device, as
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7 µF bulk electrolytic capacitor should
be utilized, again connected between the VCC and Ground
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
The AT27BV020 operating with VCC at 3.0V produces TTL
level outputs that are compatible with standard TTL logic
devices operating at VCC = 5.0V. At VCC = 2.7V, the part is
compatible with JEDEC approved low voltage battery oper-
ation (LVBO) interface specifications. The device is also
capable of standard 5-volt operation making it ideally suited
for dual supply range systems or card products that are
pluggable in both 3-volt and 5-volt hosts.
Atmel's AT27BV020 has additional features to ensure high
quality and efficient production use. The Rapid™ Program-
AT27BV020
2
AT27BV020
Block Diagram
Absolute Maximum Ratings*
*NOTICE:
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions beyond those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.
Temperature Under Bias.................................. -40°C to +85°C
Storage Temperature..................................... -65°C to +125°C
Voltage on Any Pin with
Respect to Ground .........................................-2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V(1)
Note:
Minimum voltage is -0.6V DC which may undershoot to -
2.0V for pulses of less than 20 ns.Maximum output pin
voltage is VCC + 0.75V DC which may be exceeded if cer-
tain precautions are observed (consult application notes)
and which may overshoot to +7.0V for pulses of less than
20 ns.
VPP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V(1)
Operating Modes
Mode / Pin
CE
VIL
X
OE PGM
Ai
Ai
X
VPP
X
VCC
Outputs
DOUT
Read(2)
VIL
VIH
X
X(1)
VCC
VCC
VCC
(2)
Output Disable(2)
Standby(2)
X
X
High Z
High Z
DIN
(2)
(2)
(3)
VIH
VIL
VIL
VIH
X
X
X
Rapid Program(3)
PGM Verify(3)
PGM Inhibit(3)
VIH
VIL
X
VIL
VIH
X
Ai
Ai
X
VPP
VPP
VPP
VCC
(3)
VCC
VCC
DOUT
(3)
(3)
High Z
(4)
A9 = VH
A0 = VIH or VIL
A1 - A17 = VIL
Identification
Code
Product Identification(3)(5)
VIL
VIL
X
X
VCC
Notes: 1. X Can be VIL or VIH.
2. Read, output disable, and standby modes require, 2.7V ≤ VCC ≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.
3. Refer to Programming Characteristics. Programming modes requires VCC = 6.5V.
4. VH = 12.0 ± 0.5V.
5. Two identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low
(VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.
3
DC and AC Operating Conditions for Read Operation
AT27BV020
-12
-90
-15
Com.
Ind.
0°C - 70°C
-40°C - 85°C
2.7V to 3.6V
5V ± 10%
0°C - 70°C
-40°C - 85°C
2.7V to 3.6V
5V ± 10%
0°C - 70°C
-40°C - 85°C
2.7V to 3.6V
Operating Temperature (Case)
VCC Power Supply
5V ± 10%
= Preliminary Information
DC and Operating Characteristics for Read Operation
Symbol
Parameter
Condition
Min
Max
Units
VCC = 2.7V to 3.6V
ILI
Input Load Current
VIN = 0V to VCC
±1
±5
µA
µA
µA
µA
µA
mA
V
ILO
Output Leakage Current
VPP(1) Read/Standby Current
VOUT = 0V to VCC
VPP = VCC
(2)
IPP1
10
ISB1 (CMOS), CE = VCC ± 0.3V
20
ISB
ICC
VIL
VCC(1) Standby Current
VCC Active Current
Input Low Voltage
I
SB2 (TTL), CE = 2.0 to VCC + 0.5V
100
f = 5 MHz, IOUT = 0 mA, CE = VIL, VCC = 3.6V
VCC = 3.0 to 3.6V
8
-0.6
-0.6
0.8
V
CC = 2.7 to 3.6V
VCC = 3.0 to 3.6V
CC = 2.7 to 3.6V
IOL = 2.0 mA
0.2 x VCC
VCC + 0.5
VCC + 0.5
0.4
V
2.0
V
VIH
Input High Voltage
Output Low Voltage
V
0.7 x VCC
V
V
VOL
I
I
OL = 100 µA
OL = 20 µA
0.2
V
0.1
V
IOH = -2.0 mA
2.4
V
VOH
Output High Voltage
I
I
OH = -100 µA
OH = -20 µA
VCC - 0.2
VCC - 0.1
V
V
VCC = 4.5V to 5.5V
ILI
Input Load Current
VIN = 0V to VCC
±1
±5
µA
µA
µA
µA
mA
mA
V
ILO
Output Leakage Current
VOUT = 0V to VCC
VPP = VCC
(2)
IPP1
VPP(1) Read/Standby Current
10
ISB1 (CMOS), CE = VCC ± 0.3V
100
1
ISB
VCC (1) Standby Current
I
SB2 (TTL), CE = 2.0 to VCC + 0.5V
ICC
VIL
VIH
VOL
VCC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
f = 5 MHz, IOUT = 0 mA, CE = VIL
25
-0.6
2.0
0.8
VCC + 0.5
0.4
V
IOL = 2.1 mA
V
VOH
IOH = -400 µA
2.4
V
Notes: 1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP
.
2. VPP may be connected directly to VCC, expect during programming. The supply current would then be the sum of ICC and IPP
.
AT27BV020
4
AT27BV020
AC Characteristics for Read Operation
(VCC = 2.7V to 3.6V and 4.5V to 5.5V)
AT27BV020
-90
-12
-15
Symbol
Parameter
Condition
CE = OE = VIL
OE = VIL
Min
Max
90
Min
Max
120
120
50
Min
Max
150
150
60
Units
ns
(3)
tACC
Address to Output Delay
CE to Output Delay
OE to Output Delay
(2)
tCE
90
ns
(2)(3)
tOE
CE = VIL
50
ns
OE or CE High to Output Float,
whichever occurred first
(4)(5)
tDF
40
40
50
ns
ns
Output Hold from Address, CE or OE,
whichever occurred first
tOH
0
0
0
Note:
2,3,4,5. - see AC Waveforms for Read Operation
= Preliminary Information
AC Waveforms for Read Operation(1)
Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.
2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE
.
3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC
.
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer driven.
5
Output Test Load
Input Test Waveform and Measurement Level
t , t < 20 ns (10% to 90%)
R
F
Note: CL = 100 pF
including jig capacitance.
Pin Capacitance(1)
(f = 1 MHz, T = 25°C)
Typ
4
Max
8
Units
pF
Conditions
VIN = 0V
CIN
COUT
8
12
pF
VOUT = 0V
Note:
Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
AT27BV020
6
AT27BV020
Programming Waveforms(1)
Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH.
2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer.
3. When programming the AT27BV020 a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage
transients.
DC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Limits
Symbol
ILI
Parameter
Test Conditions
Min
Max
±10
Units
µA
V
Input Load Current
Input Low Level
Input High Level
Output Low Voltage
Output High Voltage
VIN = VIL,VIH
VIL
-0.6
2.0
0.8
VIH
VCC + 0.5
0.4
V
VOL
VOH
IOL = 2.1 mA
V
IOH = -400 µA
2.4
V
VCC Supply Current
(Program and Verify)
ICC2
IPP2
VID
40
20
mA
mA
V
VPP Supply Current
CE = PGM = VIL
A9 Product
11.5
12.5
Identification Voltage
7
AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Test Conditions(1)
Limits
AC Conditions of Test
Symbol
tAS
Parameter
Min
2
Max
Units
µs
Address Setup Time
CE Setup Time
tCES
tOES
tDS
2
µs
Input Rise and Fall Times
(10% to 90%) 20ns
OE Setup Time
2
µs
Data Setup Time
2
µs
Input Pulse Levels
0.45V to 2.4V
tAH
Address Hold Time
0
µs
tDH
Data Hold Time
2
µs
tDFP
tVPS
tVCS
tPW
OE High to Output Float Delay(3)
VPP Setup Time
0
130
ns
Input Timing Reference Level
0.8V to 2.0V
2
µs
VCC Setup Time
2
µs
Output Timing Reference Level
0.8V to 2.0V
PGM Program Pulse Width(2)
Data Valid from OE
95
105
150
µs
tOE
ns
VPP Pulse Rise Time During
Programming
tPRT
50
ns
Notes: 1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
—see timing diagram.
3. Program Pulse width tolerance is 100 µsec ± 5%.
Atmel’s 27BV020 Integrated Product Identification Code(1)
Pins
Hex
Codes
A0
0
O7
0
O6
0
O5
0
O4
1
O3
1
O2
1
O1
1
O0
0
Data
Manufacturer
Device Type
1E
1
1
0
0
0
0
1
1
0
86
Note:
The AT27BV020 has the same Product Identification Code as the AT27C020. Both are programming compatible.
AT27BV020
8
AT27BV020
RapidProgramming Algorithm
A 100 µs PGM pulse width is used to program. The
address is set to the first location. VCC is raised to 6.5V and
VPP is raised to 13.0V. Each address is first programmed
with one 100 µs PGM pulse without verification. Then a
verification/reprogramming loop is executed for each
address. In the event a byte fails to pass verification, up to
10 successive 100 µs pulses are applied with a verification
after each pulse. If the byte fails to verify after 10 pulses
have been applied, the part is considered failed. After the
byte verifies properly, the next address is selected until all
have been checked. VPP is then lowered to 5.0V and VCC to
5.0V. All bytes are read again and compared with the origi-
nal data to determine if the device passes or fails.
9
Ordering Information
I
CC (mA)
VCC = 3.6V
tACC (ns)
Active
Standby
Ordering Code
Package
Operation Range
90
8
0.02
0.02
0.02
0.02
0.02
0.02
AT27BV020-90CC
AT27BV020-90JC
AT27BV020-90TC
AT27BV020-90VC
42C
32J
32T
32V
Commercial
(0°C to 70°C)
8
8
8
8
8
AT27BV020-90CI
AT27BV020-90JI
AT27BV020-90TI
AT27BV020-90VI
42C
32J
32T
32V
Industrial
(-40°C to 85°C)
120
AT27BV020-12CC
AT27BV020-12JC
AT27BV020-12TC
AT27BV020-12VC
42C
32J
32T
32V
Commercial
(0°C to 70°C)
AT27BV020-12CI
AT27BV020-12JI
AT27BV020-12TI
AT27BV020-12VI
42C
32J
32T
32V
Industrial
(-40°C to 85°C)
150
AT27BV020-15CC
AT27BV020-15JC
AT27BV020-15TC
AT27BV020-15VC
42C
32J
32T
32V
Commercial
(0°C to 70°C)
AT27BV020-15CI
AT27BV020-15JI
AT27BV020-15TI
AT27BV020-15VI
42C
32J
32T
32V
Industrial
(-40°C to 85°C)
= Preliminary Information
Package Type
42C
42-Ball, Plastic Chip-Scale Ball Grid Array (CBGA) (8 x 8mm)
32-Lead, Plastic J-Leaded Chip Carrier (PLCC)
32J
32T
32V
32-Lead, Plastic Thin Small Outline Package (TSOP) (8 x 20mm)
32-Lead, Plastic Thin Small Outline Package (VSOP) (8 x 14mm)
AT27BV020
10
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