參數(shù)資料
型號: MB90W224AZF
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-BIT, UVPROM, 16 MHz, MICROCONTROLLER, CQFP120
封裝: CERAMIC, QFP-120
文件頁數(shù): 60/105頁
文件大?。?/td> 1800K
代理商: MB90W224AZF
MB90220 Series
58
12. Watchdog Timer and Timebase Timer Functions
The watchdog timer consists of a 2-bit watchdog counter using carry from an 18-bit timebase timer 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
0000A8 H
PONR
STBR
WRST
ERST
SRST
WTE
WT1
WT0
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
0000A9 H
(—)(—)(—)(R/W)(R/W)(R)(R/W)(R/W)
———
TBIE
TBOF
TBR
TBC1
TBC0
bit15
bit14
bit13
bit12
bit11
bit10
bit9
bit8
WDTC
TBTC
XXXXXXXX
- - - XXXXX
Register name Address
Initial value
(R)
(W)
Watchdog Timer Control Register (WDTC)
Timebase Timer Control Register (TBTC)
TBTC
TBC1
TBC0
TBR
TBIE
TBOF
Selector
AND
QR
S
Selector
Timebase
interrupt
WDTC
WT1
WT0
WTE
PONR
STBR
WRST
ERST
SRST
From RST bit of STBYC register
RST pin
From hardware standby controller
From power-on signal generator
WDGRST
To internal reset signal generator
2-bit counter
OF
CLR
Watchdog reset
signal generator
CLR
212
214
216
218
TBTRES
Clock input
Timebase timer
214
216
217
218
Oscillation clock
Internal
data
bus
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