7540 datasheet(143/366 Pages) RENESAS

143 / 366 page

2-67

REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

7540 Group

APPLICATION

2.5 Timer Y and timer Z

Fig. 2.5.8 Structure of Timer Y secondary, Timer Z secondary

Timer Y secondary, Timer Z secondary

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Timer Y secondary, Timer Z secondary (TYS, TZS) [Address : 22 16, 2616]

•Set a count value of the corresponding timer.

•The value set in this register is written to the corresponding

secondary latch at the same time.

•These are read disabled bits.

When these bits are read out, the values are undefined.

Fig. 2.5.9 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.

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