Renesas M16C FAMILY, Руководство пользователя

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Rev.2.00 Oct 16, 2006 page 11 of 354
REJ09B0340-0200
M30245 Group 2. Timer A
Figure 2.2.5. Timer A-related registers (4)
Bit Symbol Bit Name Function R W
CPSR
Clock prescaler reset flag
0 : No effect
1 : Reset
(The value is “0” when read)
O O
Symbol
CPSRF Address
0381
16
When reset
0XXXXXXX
2
Clock prescaler reset flag
b7 b5 b6 b4 b3 b2 b1 b0
Nothing is assigned. Write "0" when writing to these bits.
The contents are indeterminate if read.
_ _
Bit Symbol
Bit Name Function R W
TA0OS
O O
Symbol
ONSF Address
0382
16
When reset
00
16
One-shot start flag
b7 b5 b6 b4 b3 b2 b1 b0
0 0 : Input on TA0
IN
is selected (Notes 2, 3)
0 1 : Invalid
1 0 : TA4 overflow is selected
1 1 : TA1 overflow is selected
O O
TA1OS
b1 b0
TA2OS
TA3OS
TA4OS
TA0TGL
TA0TGH
O O
O O
O O
O O
O O
Timer A0 event/trigger
select bit
Timer A0 one-shot start flag
Timer A1 one-shot start flag
Timer A2 one-shot start flag
Timer A3 one-shot start flag
Timer A4 one-shot start flag
0 : Invalid
1 : Timer start (Note 1)
Note 1 : The value is “0” when read.
Note 2 : Set the corresponding pin's port direction register to “0”.
Note 3 : To start count in one-shot timer mode, do not use an extrenal trigger input.
O O
0
Reserved
Always set to “0”