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PDF MSM80C154S Data sheet ( Hoja de datos )
| Número de pieza | MSM80C154S | |
| Descripción | (MSM80C154S / MSM83C154S) CMOS 8-bit Microcontroller | |
| Fabricantes | OKI electronic componets | |
| Logotipo |  |
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E2E1023-27-Y3
¡ Semiconductor¡ Semiconductor
MThSiMs v8e0rCsi1o5n4:SJ/a8n3.C1919584S
Previous version: Nov. 1996
MSM80C154S/83C154S
CMOS 8-bit Microcontroller
GENERAL DESCRIPTION
The MSM80C154S/MSM83C154S, designed for the high speed version of the existing
MSM80C154/MSM83C154, is a higher performance 8-bit microcontroller providing low-power
consumption.
mThe MSM80C154S/MSM83C154S covers the functions and operating range of the existing
MSM80C154/83C154/80C51F/80C31F.
oThe MSM80C154S is identical to the MSM83C154S except it does not contain the internal
program memory (ROM).
.cFEATURES
U• Operating range
t4Operating frequency
eOperating voltage
: 0 to 3 MHz (Vcc=2.2 to 6.0 V)
0 to 12 MHz (Vcc=3.0 to 6.0 V)
0 to 24 MHz (Vcc=4.5 to 6.0 V)
: 2.2 to 6.0 V
eOperating temperature
: –40 to +85°C (Operation at +125°C conforms to
the other specification.)
h• Fully static circuit
• Upward compatible with the MSM80C51F/80C31F
S• On-chip program memory
: 16K words x 8 bits ROM (MSM83C154S only)
ta• On-chip data memory
: 256 words x 8 bits RAM
• External program memory address space : 64K bytes ROM (Max)
• External data memory address space : 64K bytes RAM
a• I/O ports
: 4 ports x 8 bits
(Port 1, 2, 3, impedance programmable) : 32
.D• 16-bit timer/counters
:3
• Multifunctional serial port
: I/O Expansion mode
: UART mode (featuring error detection)
w• 6-source 2-priority level
mInterrupt and multi-level
w oInterrupt available by programming IP and IE registers
.c• Memory-mapped special function registers
w U• Bit addressable data memory and SFRs
t4• Minimum instruction cycle
: 500 ns @ 24 MHz operation
e• Standby functions
: Power-down mode (oscillator stop)
eActivated by software or hardware; providing
hports with floating or active status
taSThe software power-down stet mode is termi-
nated by interrupt signal enabling execution from
www.Dathe interrupted address.
1/40
1 page  
¡ Semiconductor
PIN CONFIGURATION (Continued)
MSM80C154S/83C154S
P1.5
P1.6
P1.7
RESET
P3.0/RXD
NC
P3.1/TXD
P3.2/INT0
1
2
3
4
5
6
7
8
P3.3/INT1 9
P3.4/T0 10
P3.5/T1/HPDI 11
33 P0.4
32 P0.5
31 P0.6
30 P0.7
29 EA
28 NC
27 ALE
26 PSEN
25 P2.7
24 P2.6
23 P2.5
NC : No-connection pin
44-Pin Plastic QFP
5/40
5 Page 
¡ Semiconductor
MSM80C154S/83C154S
Special Function Registers
Timer mode register (TMOD)
NAME
ADDRESS
TMOD
BIT LOCATION
TMOD.0
89H
FLAG
M0
TMOD.1
M1
MSB
7
GATE
M1
0
0
1
1
LSB
6543210
C/T M1 M0 GATE C/T M1 M0
FUNCTION
M0 Timer/counter 0 mode setting
0 8-bit timer/counter with 5-bit prescalar.
1 16-bit timer/counter.
0 8-bit timer/counter with 8-bit auto reloading.
1 Timer/counter 0 separated into TLO (8-bit) timer/counter
and TH0 (8-bit) timer/counter. TF0 is set by TL0 carry, and
TF1 is set by TH0 carry.
TMOD.2
TMOD.3
TMOD.4
TMOD.5
TMOD.6
TMOD.7
C/T
GATE
M0
M1
C/T
GATE
Timer/counter 0 count clock designation control bit.
XTAL1•2 divided by 12 clocks is the input applied to timer/counter 0 when
C/T = "0".
The external clock applied to the T0 pin is the input applied to timer/counter 0
when C/T = "1".
When this bit is "0", the TR0 bit of TCON (timer control register) is used to
control the start and stop of timer/counter 0 counting.
If this bit is "1", timer/counter 0 starts counting when both the TR0 bit of TCON
and INT0 pin input signal are "1", and stops counting when either is changed
to "0".
M1 M0 Timer/counter 1 mode setting
0 0 8-bit timer/counter with 5-bit prescalar.
0 1 16-bit timer/counter
1 0 8-bit timer/counter with 8-bit auto reloading.
1 1 Timer/counter 1 operation stopped.
Timer/counter 1 count clock designation control bit.
XTAL1•2 divided by 12 clocks is the input applied to timer/counter 1 when
C/T = "0".
The external clock applied to the T1 pin is the input applied to timer/counter 1
when C/T = "1".
When this bit is "0", the TR1 bit of TCON is used to control the start and stop of
timer/counter 1 counting.
If this bit is "1", timer/counter 1 starts counting when both the TR1 bit of TCON
and INT1 pin input signal are "1", and stops counting when either is changed
to "0".
11/40
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MSM80C154S.PDF ] | |
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