參數(shù)資料
型號(hào): MB90522PFF
廠(chǎng)商: FUJITSU LTD
元件分類(lèi): 微控制器/微處理器
英文描述: Quadruple 2-Input Positive-NAND Gates 14-CDIP -55 to 125
中文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁(yè)數(shù): 39/106頁(yè)
文件大?。?/td> 1539K
代理商: MB90522PFF
MB90520 Series
39
3. Watchdog Timer
The watchdog timer is a 2-bit counter operating with an output of the timebase timer and resets the CPU when
the counter is not cleared for a preset period of time.
(1) Register Configuration
(2) Block Diagram
Watchdog timer control register (WDTC)
Address
0000A8
H
PONR STBR WRST ERST
SRST
WTE
WT1
WT0
R : Read only
W: Write only
X : Indeterminate
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
R
R
R
R
R
W
W
W
Initial value
XXXXXXXX
B
HCLK : Oscillation clock frequency
PONR STBR WRST ERST SRST WTE
WT1
WT0
Watchdog timer control register (WDTC)
Start sleep-mode
Start hold status
CLR and start
Watchdog timer
Overflow
To internal reset
generation circuit
Counter clear
control circuit
Count clock
selector
2-bit
counter
Watchdog timer
reset generation
circuit
Clear
Divided-by-2
of HCLK
(Timebase timer counter)
×
2
1
×
2
2
. . .
×
2
8
×
2
9
×
2
10
×
2
11
×
2
12
×
2
13
×
2
14
×
2
15
×
2
16
×
2
17
×
2
18
CLR
2
4
CLR
Start stop-mode
相關(guān)PDF資料
PDF描述
MB90522PFV Quadruple 2-Input Positive-NAND Gates 14-CFP -55 to 125
MB90523 Quadruple 2-Input Positive-NAND Gates 20-LCCC -55 to 125
MB90523PFF 16-bit Proprietary Microcontroller
MB90523PFV 16-bit Proprietary Microcontroller
MB90V590A 16-bit Proprietary Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90522PFV 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90523 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90523A 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90523APFF 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90523APFV 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller