参数资料
型号: ST62P45BQ6/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP52
封装: PLASTIC, QFP-52
文件页数: 19/72页
文件大小: 514K
代理商: ST62P45BQ6/XXX
26/72
ST62T45B/E45B
DIGITAL WATCHDOG (Cont’d)
These instructions test the C bit and Reset the
MCU (i.e. disable the Watchdog) if the bit is set
(i.e. if the Watchdog is active), thus disabling the
Watchdog.
In all modes, a minimum of 28 instructions are ex-
ecuted after activation, before the Watchdog can
generate a Reset. Consequently, user software
should load the watchdog counter within the first
27 instructions following Watchdog activation
(software mode), or within the first 27 instructions
executed following a Reset (hardware activation).
It should be noted that when the GEN bit is low (in-
terrupts disabled), the NMI interrupt is active but
cannot cause a wake up from STOP/WAIT
modes.
Figure 15. Digital Watchdog Block Diagram
RSFF
8
DATA BUS
VA00010
-2
-12
OSCILLATOR
RESET
WRITE
RESET
DB0
R
S
Q
D B1.7
SET
LOAD
7
8
-2
SET
CLOCK
25
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