参数资料
型号: UPD78F9212CS-CAB-A
厂商: Renesas Electronics America
文件页数: 58/175页
文件大小: 0K
描述: MCU 8BIT 4KB FLASH 16PIN
标准包装: 400
系列: 78K0S/Kx1+
核心处理器: 78K0S
芯体尺寸: 8-位
速度: 10MHz
外围设备: LVD,POR,PWM,WDT
输入/输出数: 13
程序存储器容量: 4KB(4K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 16-DIP(0.300",7.62mm)
包装: 托盘
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 “low-speed
internal oscillator cannot be
stopped” or “low-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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