參數(shù)資料
型號(hào)： MB90W234
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16位微控制器專有
文件頁數(shù)： 46/83頁
文件大小： 1513K
代理商： MB90W234
MB90230 Series
46
12.Watchdog Timer and Timebase Timer
The watchdog timer consists of a 2-bit watchdog counter using carry signals from an 18-bit timebase counter
as the clock source, a control register, and a watchdog reset control section. The timebase timer consists of
an 18-bit timer and an interval interrupt control circuit.
(1) Register Configuration
(2) Block Diagram
TBTC
WTC
15
8
7
0
Timebase timer control register
0000A9
H
, A8
H
Address:
bit
TBTC
TBC1
TBC0
TBR
TBIE
TBOF
Selector
AND
Q
R
S
Selector
Timebase
interrupt
WTC
WT1
WT0
WTE
PONR
STBR
WRST
ERST
SRST
From RST bit in STBYC register
RST pin
From hardware standby
control circuit
From power-on occurrence
WDGRST
To internal reset generator
2-bit counter
OF
CLR
Watchdog reset
generator
CLR
2
12
2
14
2
16
2
18
TBTRES
Clock input
Timebase timer
2
14
2
16
2
17
2
18
Oscillation clock
F
2
M
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