7540 datasheet(144/366 Pages) RENESAS

144 / 366 page

2-68

REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

APPLICATION

7540 Group

2.5 Timer Y and timer Z

Fig. 2.5.10 Structure of Timer Y, Z waveform output control register

Fig. 2.5.11 Structure of One-shot start register

Timer Y, Z waveform output control register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Name

Timer Y primary waveform

extension control bit

Timer Y secondary waveform

extension control bit

Timer Z output level latch

Timer Z primary waveform

extension control bit

Timer Z secondary waveform

extension control bit

Timer Y output level latch

0 : Falling edge trigger

1 : Rising edge trigger

Timer Y, Z waveform output control register (PUM) [Address : 24 16]

INT0 pin one-shot trigger

control bit (Note)

INT0 pin one-shot trigger active

edge selection bit ( Note)

0 : Waveform not extended

1 : Waveform extended

0 : Waveform not extended

1 : Waveform extended

0 : Waveform not extended

1 : Waveform extended

0 : Waveform not extended

1 : Waveform extended

0 : “L” output

1 : “H” output

0 : “L” output

1 : “H” output

0 : INT0 pin one-shot trigger invalid

1 : INT0 pin one-shot trigger valid

Note: Stop timer Z to change the values of these bits.

One-shot start register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Name

One-shot start register (ONS) [Address : 2A 16]

Nothing is allocated for these bits. These are write disabled bits.

When these bits are read out, the values are “0”.

Timer Z one-shot start bit

0 : One-shot stop

1 : One-shot start

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