M38039G8HKP datasheet(38/92 Pages) RENESAS

38 / 92 page

Rev.1.10

Nov 14, 2005

Page 38 of 91

REJ03B0166-0110

3803 Group (Spec.H QzROM version)

PRELIMINARY

Notice: This is not a final specification.

Some parametric limits are subject to change.

Fig 25. Structure of timer Z mode register

Timer Z mode register

(TZM : address 002A16)

Timer Z operating mode bits

b2 b1 b0

0 0 0 : Timer/Event counter mode

0 0 1 : Pulse output mode

0 1 0 : Pulse period measurement mode

0 1 1 : Pulse width measurement mode

1 0 0 : Programmable waveform generating mode

1 0 1 : Programmable one-shot generating mode

1 1 0 : Not available

1 1 1 : Not available

Timer Z write control bit

0 : Writing data to both latch and timer simultaneously

1 : Writing data only to latch

Output level latch

0 : “L” output

1 : “H” output

CNTR2 active edge switch bit

0 :

•Event counter mode: Count at rising edge

•Pulse output mode: Start outputting “H”

•Pulse period measurement mode: Measurement between two falling edges

•Pulse width measurement mode: Measurement of “H” term

•Programmable one-shot generating mode: After start outputting “L”,

“H” one-shot pulse generated

•Interrupt at falling edge

1 :

•Event counter mode: Count at falling edge

•Pulse output mode: Start outputting “L”

•Pulse period measurement mode: Measurement between two rising edges

•Pulse width measurement mode: Measurement of “L” term

•Programmable one-shot generating mode: After start outputting “H”,

“L” one-shot pulse generated

•Interrupt at rising edge

Timer Z count stop bit

0 : Count start

1 : Count stop

Timer/Event counter mode switch bit (Note)

0 : Timer mode

1 : Event counter mode

Note:

When selecting the modes except the timer/event counter mode, set “0” to this bit.

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