7540 datasheet(329/366 Pages) RENESAS

329 / 366 page

3-107

REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

7540 Group

APPENDIX

3.5 List of registers

Fig. 3.5.18 Structure of Timer Y, Z waveform output control register

Fig. 3.5.17 Structure of Timer Y primary, Timer Z primary

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Timer Y primary, Timer Z primary

Timer Y primary, Timer Z primary (TYP, TZP) [Address : 23 16, 2716]

•Set a count value of the corresponding timer.

•When the corresponding timer is stopped, the value set in this

the corresponding timer at the same time.

•When the corresponding timer is operating, the value set in this

timer write control bit = 0:

the value is written to both the corresponding primary latch and

the corresponding timer at the same time.

timer write control bit = 1:

the value is written to the corresponding primary latch.

•When these bits are read out, the count value of the corres-

ponding timer is read out (Note).

Note: The primary count value is read out at the primary interval, the secondary count

value is read out at the secondary interval.

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.

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