tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 159

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA001
Timer counter A0 control register
(0x0032)
TA0CR
Note 1: The auto capture can be used only in the timer, event counter, external trigger timer and window modes.
Note 2: Set TA0TFF, TA0OVE and TA0NC in the stopped state (TA0S="0"). Writing is invalid during the operation (TA0S="1").
Note 3: When the STOP mode is started, the start control (TA0S) is automatically cleared to "0" and the timer stops. Set TA0S
Note 4: When a read instruction is executed on TA0CR, bits 3 and 2 are read as "0".
Note 5: Do not set TA0NC to "01" or "10" when the SLOW 1/2 or SLEEP 1 mode is used. Setting TA0NC to "01" or "10" stops the
TA0MPPG
again to use the timer counter after the release of the STOP mode.
noise canceller and no signal is input to the timer.
TA0ACAP
TA0OVE
TA0TFF
Read/Write
TA0NC
Bit Symbol
After reset
TA0S
Noise canceller sampling interval
setting
Auto capture function
Timer counter A start control
Overflow interrupt control
Timer F/F control
PPG output control
TA0OVE
R/W
7
0
TA0TFF
R/W
6
1
5
0
Page 145
00
01
10
11
TA0NC
0
1
0
1
0
1
0
1
0
1
R/W
Generate no INTTA0 interrupt request when the counter overflow
occurs.
Generate an INTTA0 interrupt request when the counter overflow
occurs.
Clear
Set
Disable the auto capture
Enable the auto capture
Continuous
One-shot
Stop & counter clear
Start
NORMAL 1/2 or IDLE 1/2 mode
4
0
No noise canceller
fcgck/2
fcgck/2
fcgck/2
R
2
8
3
0
-
R
2
0
-
SLOW1/2 or SLEEP1 mode
No noise canceller
TA0MPPG
TA0CAP
R/W
1
0
fs/2
-
-
TMP89FM42
TA0S
R/W
0
0