AT89LS52-16AI datasheet(20/40 Pages) ATMEL

부품명	AT89LS52-16AI

상세설명	8-bit Low-Voltage Microcontroller with 8K Bytes In-System Programmable Flash

PDF	40 Pages

Scroll/Zoom	100%

제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

Logo

20 / 40 page

2601B–MICRO–03/05

AT89LS52

16. Power-down Mode

In the Power-down mode, the oscillator is stopped, and the instruction that invokes Power-down

is the last instruction executed. The on-chip RAM and Special Function Registers retain their

values until the Power-down mode is terminated. Exit from Power-down mode can be initiated

either by a hardware reset or by activation of an enabled external interrupt (INT0 or INT1). Reset

redefines the SFRs but does not change the on-chip RAM. The reset should not be activated

before V

CC is restored to its normal operating level and must be held active long enough to allow

the oscillator to restart and stabilize.

Figure 16-1. Oscillator Connections

Note:

C1, C2 = 30 pF

± 10 pF for Crystals

= 40 pF

± 10 pF for Ceramic Resonators

Figure 16-2. External Clock Drive Configuration

XTAL2

GND

XTAL1

XTAL2

XTAL1

GND

EXTERNAL

OSCILLATOR

SIGNAL

AT89LS52-16AI 데이터시트(PDF) 20 Page - ATMEL Corporation