tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 173

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

13.2
Control
RB002
Timer counter A0 mode register
TA0MOD
(0x0031)
Note 1: fcgck, Gear clock [Hz]; fs, Low-frequency clock [Hz]
Note 2: Set TA0MOD in the stopped state (TA0CR<TA0S>="0"). Writing to TA0MOD is invalid during the operation
TA0MCAP
TA0METT
TA0DBE
TA0TED
Read/Write
TA0CK
Bit Symbol
After reset
(TA0CR<TA0S>="1").
TA0M
Double buffer control
External trigger input selection
Pulse width measurement mode
control
External trigger timer mode control
Timer counter 1 source clock selec-
tion
Timer counter 1 operation mode se-
lection
TA0DBE
R/W
7
1
TA0TED
R/W
6
0
TA0MCAP
TA0METT
R/W
5
0
Page 154
000
001
010
011
100
101
110
111
00
01
10
11
0
1
0
1
0
1
0
1
Disable the double buffer
Enable the double buffer
Rising edge/H level
Falling edge/L level
Double edge capture
Single edge capture
Trigger start
Trigger start & stop
Timer mode
Timer mode
Event counter mode
PPG output mode (Software start)
External trigger timer mode
Window mode
Pulse width measurement mode
Reserved
SYSCR1<DV9CK>
4
0
fcgck/2
fcgck/2
fcgck/2
NORMAL 1/2 or IDLE 1/2 mode
fcgck/2
="0"
TA0CK
R/W
10
6
2
3
0
SYSCR1<DV9CK>
fcgck/2
fcgck/2
fcgck/2
="1"
fs/2
2
0
3
6
2
TA0M
R/W
SLOW1/2 or SLEEP1
1
0
TMP89FM42A
mode
fs/2
-
-
-
3
0
0