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MSM80C154S/83C154S

Timer control register (TCON)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAME

ADDRESS

MSB

 

 

 

 

 

 

 

 

 

LSB

7

6

5

4

 

3

 

2

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON

88H

TF1

TR1

TF0

TR0

 

IE1

 

IT1

IE0

 

IT0

 

 

 

 

 

 

 

 

 

 

 

 

BIT LOCATION

FLAG

 

 

 

FUNCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.0

IT0

External interrupt 0 signal is used in level-detect mode when this bit is "0" and in

 

 

trigger detect mode when "1".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.1

IE0

Interrupt request flag for external interrupt 0.

 

 

 

 

 

 

The bit is reset automatically when an interrupt is serviced.

 

 

 

 

 

The bit can be set and reset by software when IT0 = "1".

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.2

IT1

External interrupt 1 signal is used in level detect mode when this bit is "0", and in

 

 

trigger detect mode when "1".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.3

IE1

Interrupt request flag for external interrupt 1.

 

 

 

 

 

 

The bit is reset automatically when an interrupt is serviced.

 

 

 

 

 

The bit can be set and reset by software when IT1 = "1".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.4

TR0

Counting start and stop control bit for timer/counter 0.

 

 

 

 

 

 

Timer/counter 0 starts counting when this bit is "1", and stops counitng when "0".

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.5

TF0

Interrupt request flag for timer interrupt 0.

 

 

 

 

 

 

 

 

The bit is reset automatically when an interrupt is serviced.

 

 

 

 

 

The bit is set to "1" when a carry signal is generated from timer/counter 0.

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.6

TR1

Counting start and stop control bit for timer/counter 1.

 

 

 

 

 

 

The timer/counter 1 starts counting when this bit is "1", and stops counting when "0".

 

 

 

 

 

 

 

 

 

 

 

 

 

TCON.7

TF1

Interrupt request flag for timer interrupt 1.

 

 

 

 

 

 

 

 

The bit is reset automatically when interrupt is serviced.

 

 

 

 

 

The bit is set to "1" when carry signal is generated from timer/counter 1.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Image 13
Oki MSM83C154S Timer control register Tcon, Interrupt request flag for external interrupt, TR1 TF0 TR0 IE1 IT1 IE0 IT0