參數(shù)資料
型號: MB90457PMT
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 25/78頁
文件大小: 680K
代理商: MB90457PMT
MB90455 Series
31
Watchdog timer block diagram
21
22
211 212
213
214
215
216
217
218
210
29
28
2
SRST
WT1 WT0
WTE
PONR
WRST ERST
WDCS
21
22
28
29
210
211
212
213
214
215
27
26
25
4
Watchdog timer control register(WDTC)
Clock timer control register (WTC)
Watchdog timer
Reset occurs
Shift to sleep mode
Shift to time-base
timer mode
Shift to clock mode
Shift to stop mode
Counter
clear control
circuit
Count clock
selector
2-bit
counter
Watchdog
reset
generation
circuit
Internal reset
generation
circuit
Clear
Main clock
(dividing HCLK by 2)
Sub clock
SCLK
Time-base timer counter
Clock counter
HCLK: Oscillation clock
SCLK: Sub clock
Activate
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