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PDF MSM80C31F Data sheet ( Hoja de datos )
| Número de pieza | MSM80C31F | |
| Descripción | (MSM80C31F / MSM80C51F) CMOS 8-Bit Microcontroller | |
| Fabricantes | OKI electronic | |
| Logotipo |  |
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E2E1037-19-41
¡¡SemicondSucetormiconductor
ThiMs vSeMrs8io0nC:3M1Fa/r8.01C99551F
MSM80C31F/MSM80C51F
CMOS 8-Bit Microcontroller
GENERAL DESCRIPTION
The OKI MSM80C31F/MSM80C51F microcontroller is a low-power, 8-bit device implemented
in OKI's silicon-gate complementary metal-oxide semiconductor process technology. The
device includes 4K bytes of mask programmable ROM (MSM80C51F only), 128 bytes of
data RAM, 32 I/O lines, two 16-bit timer/counters, a five-source two-level interrupt
structure, a full duplex serial port, and an oscillator and clock circuitry. In addition, the device
has two software selectable modes for further power reduction — Idle and Power Down. Idle
mode freezes the CPU's in-struction execution while maintaining RAM and allowing the timers,
serial port and interrupt system to continue functions. Power Down mode saves the RAM
contents but freezes the oscillator causing all other device functions to be inoperative.
FEATURES
• Low power consumption by 2 mm silicon gate CMOS process technology
• Fully static circuit
• Internal program memory
: 4K bytes (MSM80C51F)
• External program memory space
: 64K byteswww.DataSheet4U.com
• Internal data memory (RAM)
: 128 bytes
• External data memory (RAM) space
: 64K bytes
• I/O ports
: 8-bit ¥ 4 ports
• Two 16-bit timer/counters
• Multifunctional serial port (UART)
• Five interrupt sources (Priority can be set)
• Four sets of working registers (R0-7 ¥ 4)
• Stack
: Internal data memory (RAM)
128-byte area can be used arbitrarily (by SP specified)
• Two CPU power-down modes
(1) Idle mode
: CPU stopped while oscillation continued.
(Software setting)
(2) PD mode
: CPU and oscillation all stopped.
(Software setting)
(Setting I/O ports to floating status possible)
• Operating temperature
• 2-byte 1-machine cycle instructions
: –40 to +85°C (@ 12 MHz, VCC = 5 V ±20%)
–20 to +70°C (@ 16 MHz, VCC = 5 V ±5%)
: 1 msec. @ 12 MHz
0.75 msec. @ 16 MHz
• Multiplication/division instructions
: 4 msec. @ 12 MHz
3 msec. @ 16 MHz
• Instruction code addressing method
Byte specification
: Data addressing (direct)
Bit specification
: Bit addressing
1/38
1 page  
¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
MSM80C31F/80C51F
P1.0 1
P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RESET 9
RXD/P3.0 10
TXD/P3.1
INT0/P3.2
INT1/P3.3
11
12
13
T0/P3.4 14
T1/P3.5
WR/P3.6
RD/P3.7
15
16
17
XTAL2 18
XTAL1 19
VSS 20
40 VCC
39 P0.0
38 P0.1
37 P0.2
36 P0.3
35 P0.4
34 P0.5
33 P0.6
32 P0.7
31 EA
30 ALE
29 PSEN
28 P2.7
27 P2.6
26 P2.5
25 P2.4
24 P2.3
23 P2.2
22 P2.1
21 P2.0
40-Pin Plastic DIP
5/38
5 Page 
¡ Semiconductor
MSM80C31F/80C51F
DETAILED DIAGRAM OF SPECIAL FUNCITON REGISTERS
Data
Address (MSB)
Bit Address
Special
Function
Register
(LSB) Symbol
0F0H F7 F6 F5 F4 F3 F2 F1 F0 B
0E0H E7 E6 E5 E4 E3 E2 E1 E0 ACC
CY AC F0 RS1 RS0 OV F1 P
0D0H D7 D6 D5 D4 D3 D2 D1 D0 PSW
PS PT1 PX1 PT0 PX0
0B8H — — — BC BB BA B9 B8 IP
0B0H B7 B6 B5 B4 B3 B2 B1 B0 P3
EA ES ET1 EX1 ET0 EX0
0A8H AF — — AC AB AA A9 A8 IE
0A0H A7 A6 A5 A4 A3 A2 A1 A0 P2
99H Not Bit Addressable
SM0 SM1 SM2 REN TB8 RB8
98H 9F 9E 9D 9C 9B 9A
TI
99
SBUF
RI
98 SCON
90H 97 96 95 94 93 92 91 90 P1
8DH
Not Bit Addressable
TH1
8CH
Not Bit Addressable
TH0
8BH
Not Bit Addressable
TL1
8AH
Not Bit Addressable
TL0
89H
Not Bit Addressable
TMOD
TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0
88H 8F 8E 8D 8C 8B 8A 89 88 TCON
87H
Not Bit Addressable
PCON
83H
Not Bit Addressable
DPH
82H
Not Bit Addressable
DPL
81H
Not Bit Addressable
SP
80H 87 86 85 84 83 82 81 80 P0
11/38
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MSM80C31F.PDF ] | |
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