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AT89LS52-16PI bảng dữ liệu(PDF) 20 Page - ATMEL Corporation

tên linh kiện AT89LS52-16PI
Giải thích chi tiết về linh kiện  8-bit Low-Voltage Microcontroller with 8K Bytes In-System Programmable Flash
PDF  40 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
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AT89LS52-16PI bảng dữ liệu(HTML) 20 Page - ATMEL Corporation

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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
C2
XTAL2
GND
XTAL1
C1
XTAL2
XTAL1
GND
NC
EXTERNAL
OSCILLATOR
SIGNAL



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