參數(shù)資料
型號: UPD78F9212CS-CAB-A
廠商: Renesas Electronics America
文件頁數(shù): 58/175頁
文件大?。?/td> 0K
描述: MCU 8BIT 4KB FLASH 16PIN
標準包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-DIP(0.300",7.62mm)
包裝: 托盤
CHAPTER 8 WATCHDOG TIMER
User’s Manual U16994EJ6V0UD
148
8.2
Configuration of Watchdog Timer
The watchdog timer consists of the following hardware.
Table 8-3. Configuration of Watchdog Timer
Item
Configuration
Control registers
Watchdog timer mode register (WDTM)
Watchdog timer enable register (WDTE)
Figure 8-1. Block Diagram of Watchdog Timer
fRL/22
Clock
input
controller
Output
controller
Internal reset signal
WDCS2
Internal bus
WDCS1 WDCS0
fX/24
WDCS3
WDCS4
01
1
Selector
16-bit
counter
or
213/fX to
220/fX
211/fRL to
218/fRL
Watchdog timer enable
register (WDTE)
Watchdog timer mode
register (WDTM)
3
2
Clear
Option byte
(to set “l(fā)ow-speed
internal oscillator cannot be
stopped” or “l(fā)ow-speed
internal oscillator can be
stopped by software”)
Remarks 1. fRL: Low-speed internal oscillation clock oscillation frequency
2. fX: System clock oscillation frequency
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