T48C893 datasheet(51/82 Pages) ATMEL

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T48C893

Rev. A4, 22-Jan-02

51 (82)

Timer 3 Compare Mode Register 1 (T3CM1)

Address: ’B’hex – Subaddress: ’2’hex

Bit 3

Bit 2

Bit 1

Bit 0

T3CM1

T3SM1

T3TM1

T3RM1

T3IM1

Reset value: 0000b

T3SM1

Timer 3 Single action Mask bit 1

T3SM1 = 0, disables single-action compare mode

T3SM1 = 1, enables single-compare mode. After this bit is set, the compare register (T3CO1) is

used until the next compare match.

T3TM1

Timer 3 compare Toggle action Mask bit 1

T3TM1 = 0, disables compare toggle

T3TM1 = 1, enables compare toggle. A match of Counter 3 with the compare register

(T3CO1) toggles the output flip-flop (TOG3).

T3RM1

Timer 3 Reset Mask bit 1

T3RM1 = 0, disables counter reset

T3RM1 = 1, enables counter reset. A match of Counter 3 with the compare register (T3CO1)

resets the Counter 3.

T3IM1

Timer 3 Interrupt Mask bit 1

T3RM1 = 0, disables Timer 3 interrupt for T3CO1 register.

T3RM1 = 1, enables Timer 3 interrupt for T3CO1 register.

T3CM1 contains the mask bits for the match event of the Counter 3 compare register 1

Timer 3 Compare Mode Register 2 (T3CM2)

Address: ’B’hex – Subaddress: ’3’hex

Bit 3

Bit 2

Bit 1

Bit 0

T3CM2

T3SM2

T3TM2

T3RM2

T3IM2

Reset value: 0000b

T3SM2

Timer 3 Single action Mask bit 2

T3SM2 = 0, disables single-action compare mode

T3SM2 = 1, enables single-compare mode. After this bit is set, the compare register (T3CO2) is

used until the next compare match.

T3TM2

Timer 3 compare Toggle action Mask bit 2

T3TM2 = 0, disables compare toggle

T3TM2 = 1, enables compare toggle. A match of Counter 3 with the compare register

(T3CO2) toggles the output flip-flop (TOG3).

T3RM2

Timer 3 Reset Mask bit 2

T3RM2 = 0, disables counter reset

T3RM2 = 1, enables counter reset. A match of Counter 3 with the compare register (T3CO2)

resets the Counter 3.

T3IM2

Timer 3 Interrupt Mask bit 2

T3RM2 = 0, disables Timer 3 interrupt for T3CO2 register.

T3RM2 = 1, enables Timer 3 interrupt for T3CO2 register.

T3CM2 contains the mask bits for the match event of Counter 3 compare register 2

The compare registers and corresponding counter reset masks can be used to program the counter time intervals and

the toggle masks can be used to program output signal. The single-action mask can also be used in this mode. It starts

operating after the timer started with T3R.

T48C893 Datasheet(PDF) 51 Page - ATMEL Corporation

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