KS51840 [SAMSUNG]
4-bit single-chip CMOS microcontroller; 4位单芯片CMOS微控制器
| 型号： | KS51840 |
| 厂家： | 
SAMSUNG |
| 描述： | 4-bit single-chip CMOS microcontroller |
| 文件： | 总3页 (文件大小：23K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
KS51840
DESCRIPTION
KS51840, a 4-bit single-chip CMOS microcontroller, consists of the reliable SMCS-51 CPU core with on-chip
ROM and RAM. Eight input pins and 11 output pins provide the flexibility for various I/O requirements. Auto
reset circuit generates reset pulse every certain period, and every halt mode termination time. The KS51840
microcontroller has been designed for use in small system control applications that require a low-power,
cost-sensitive design solution. In addition, the KS51840 has been optimized for remote control transmitter.
FEATURES
ROM Size
RAM Size
1,024 bytes
32 nibbles
Instruction Set
Instruction Cycle Time
Input Ports
Output Ports
Built-in Oscillator
39 instructions
13.2 µsec at Fxx=455 kHz
Two 4-bit ports(24 pins)/One 4-bit port, one 2-bit ports(20 pins)
One 4-bitport,Seven1-bitports(24pins)/One 4-bit port, Five1-bit ports(20pins)
Crystal/Ceramic resonator
Built-in Power-on reset and auto reset circuit for generating reset pulse every 131072/Fxx(288ms at Fxx=455kHz)
Four Transmission Frequencies
Fxx/12 (1/4 duty), Fxx/12 (1/3 duty), Fxx/8 (1/2 duty), and
no-carrier frequency
1.8V–3.6V(Fosc:250kHz–3.9MHz),2.2V–3.6V(Fosc:4MHz–6MHz)
Halt mode: 1 µA (maximum)
Supply Voltage
Power Consumption
Normal mode: 0.5 mA (typical)
-20°C to 85°C
24 SOP, 20 DIP, 20 SOP
Mask Option= Fosc or Fosc/8
Operating temperature
Package Type
Oscillator Frequency divide select
BLOCK DIAGRAM
P2.1 - P2.6
Internal P2.13
6
P2-output Latch
8
5
ROM
64x16x8 bits
16
L Decoder
4
RAM
16x2x4bits
4
6
PA
PC
2
4
4
1
PB
4
H
3-Level Stack
4
4
L
ALU & A
4
P1.0 - P1.3
P0.0 - P0.3
4
4
MUX
SF
Internal P2.9 and P2.10
4
P3 Output Register
( PR )
4
P3.0 - P3.3
Internal
P2.0
Fxx/8 (1/2)
Auto Reset
Fxx/12 (1/3)
Fxx/12 (1/4)
DIV
OSC
HALT
No carrier
Internal P2.12
XI XO
P2.0/REM
1–1
S MSUNG
ELECTRONICS
KS51840
PIN CONFIGURATION (24 SOP)
VSS
XI
1
2
24
23
22
21
20
19
18
17
16
15
14
13
VDD
P2.0/REM
TEST
P2.1
XO
3
P2.6
P0.0
P0.1
P0.2
P0.3
P1.0
P1.1
P1.2
P1.3
4
5
P2.2
6
P2.3
KS51840
(Top View)
7
P2.4
8
P2.5
9
P3.0
10
11
12
P3.1
P3.2
P3.3
PIN DESCRIPTION FOR 24 PINS
I/O Circuit
Type
Symbols
Pin No.
Type
Input
Functions
P0.0 - P0.3
5, 6, 7, 8
A
A
B
4-bit input port when P2.13 is low
4-bit input port when P2.13 is high
1-bit individual output for remote carrier frequency
1-bit individual output port
P1.0 - P1.3 9,10,11,12
P2.0/REM 23
Input
(1)
Output
Output
P2.2 - P2.5 20,19,18,
17
C
D
P2.1, P2.6
21,4
P3.0 - P3.3 16,15,14,13 Output
C
4-bit parallel output port
Input pin for test (Normally connected to VSS)
Oscillation clock input
Oscillation clock output
Power supply
TEST
XI
22
2
Input
Input
—
—
—
—
—
XO
3
Output
—
VDD
24
1
—
VSS
Ground
NOTES:
1.The carrier can be selected by software as Fxx/12 (1/3 duty), Fxx/12 (1/4 duty),
Fxx/8 (1/2 duty), or no-carrier frequency.
2.Package type can be selected as 24 SOP in the ordering sheet.
S MSUNG
1–2
ELECTRONICS
KS51840
PIN CONFIGURATION (20 DIP, 20 SOP)
VSS
1
2
20
19
18
17
16
15
14
13
12
11
VDD
XI
XO
P2.0/REM
TEST
P2.1
3
P0.0
P0.1
P0.2
P0.3
P1.0
P1.1
P3.3
4
5
P2.2
KS51840
(Top View)
6
P2.3
7
P2.4
8
P3.0
9
P3.1
10
P3.2
PIN DESCRIPTION FOR 20 PINS
I/O Circuit
Type
Type
Input
Symbols
P0.0 - P0.3
P1.0 - P1.1
P2.0/REM
P2.2 - P2.4
Pin No.
4, 5, 6, 7
8, 9
Functions
A
A
B
4-bit input port when P2.13 is low
2-bit input port when P2.13 is high
1-bit individual output for remote carrier frequency
1-bit individual output port
Input
(1)
Output
Output
19
16,15,
14
C
D
P2.1
17
Output
Input
Input
Output
—
C
P3.0 - P3.3 13,12,11,10
4-bit parallel output port
Input pin for test (Normally connected to VSS)
Oscillation clock input
Oscillation clock output
Power supply
—
—
—
—
—
TEST
XI
18
2
XO
3
VDD
20
1
—
VSS
Ground
NOTES:
1.The carrier can be selected by software as Fxx/12 (1/3 duty), Fxx/12 (1/4 duty),
Fxx/8 (1/2 duty), or no-carrier frequency.
2.Package type can be selected as 20 DIP, or 20 SOP in the ordering sheet.
1–3
S MSUNG
ELECTRONICS
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