MSM83C154S-XXXGS-2K Ver la hoja de datos (PDF) - Oki Electric Industry
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MSM83C154S-XXXGS-2K Datasheet PDF : 40 Pages
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¡ 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
6
5
4
3
2
1
0
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".
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