參數(shù)資料
型號: MB90611A
廠商: Fujitsu Limited
英文描述: 16-Bit Proprietary Microcontroller(16位專用微控制器)
中文描述: 16位微控制器專利(16位專用微控制器)
文件頁數(shù): 40/91頁
文件大?。?/td> 953K
代理商: MB90611A
40
MB90610A Series
9.
Watchdog Timer and Timebase Timer Functions
The watchdog timer consists of a 2-bit watchdog counter, a control register, and a watchdog reset controller.
The watchdog counter uses the carry-up signal from the 18-bit timebase timer as its clock source. In addition
to the 18-bit timer, the timebase timer contains an interval interrupt control circuit. The timebase timer uses the
main clock, regardless of the value of the MCS bit in the CKSCR register.
(1) Register Configuration
(2) Block Diagram
bit
Read/write
Initial value
PONR STBR WRST ERST SRST WTE
WT1
WT0
WDTC
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(R)
(X)
(W)
(1)
(W)
(1)
(W)
(1)
7
6
5
4
3
2
1
0
Watchdog timer control register
Address: 0000A8
H
bit
Read/write
Initial value
Reserved
TBIE TBOF TBR TBC1 TBC0
TBTC
(—)
(1)
(—)
(—)
(—)
(—)
(R/W)
(0)
(R/W)
(0)
(W)
(1)
(R/W)
(0)
(R/W)
(0)
15
14
13
12
11
10
9
8
Timebase timer control register
Address: 0000A9
H
TBTC
TBC1
TBC0
TBR
TBIE
TBOF
PONR
STBR
WRST
ERST
SRST
Selector
AND
Q
Selector
2-bit counter
CLR
CLR
Watchdog reset
activation circuit
WT1
WDTC
WT0
WTE
2
12
2
14
2
16
2
19
TBTRES
2
12
Timebase
interrupt
S
R
Timebase timer
Clock input
2
14
2
16
2
19
OF
Main clock
(OSC oscillator)
WDGRST
To internal reset
activation circuit
From power-on detection
From hardware standby
control circuit
RST pin
From the RST bit of the
STBYC register
F
2
M
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