HD4043312 Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

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HD4043312

4-bit HMCS400-Series microcomputer

Hitachi -> Renesas Electronics 

HD404339 Series

Timer B

Timer B is an 8-bit multifunction timer that includes free-running, reload, and input capture timer features.

These are described as follows.

• By setting timer mode register B1 (TMB1: $009), one of seven internal clocks supplied from prescaler

S can be selected, or timer B can be used as an external event counter

• By setting timer mode register B2 (TMB2: $026), detection edge type of EVNB can be selected.

• By setting timer write register BL, U (TWBL, U: $00A, $00B), timer counter B (TCB) can be written

to during reload timer operation

• By setting timer read register BL, U (TRBL, U: $00A, $00B), the contents of timer counter B can be

read out

• Timer B can be used as an input capture timer to count the clock cycles between trigger edges input as

an external event

• An interrupt can be requested when timer counter B overflows or when a trigger input edge is received

during input capture operation

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