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ST62T45B bảng dữ liệu(PDF) 26 Page - STMicroelectronics

tên linh kiện ST62T45B
Giải thích chi tiết về linh kiện  8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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ST62T45B bảng dữ liệu(HTML) 26 Page - STMicroelectronics

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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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