ST62T55CM6 datasheet(30/86 Pages) STMICROELECTRONICS

부품명	ST62T55CM6

상세설명	8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI

PDF	86 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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ST62T55C ST62T65C/E65C

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 18. A typical circuit making use of the

EXERNAL STOP MODE CONTROL feature

Figure 19. Digital Watchdog Block Diagram

NMI

SWITCH

I/O

VR02002

RSFF

DATA BUS

VA00010

-2

-12

OSCILLATOR

RESET

WRITE

RESET

DB0

DB1.7

SET

LOAD

-2

SET

CLOCK

ST62T55CM6 데이터시트(PDF) 30 Page - STMicroelectronics