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AT89LP4052 데이터시트(PDF) 72 Page - ATMEL Corporation

부품명 AT89LP4052
상세설명  8-bit Microcontroller with 2/4-Kbyte Flash
PDF  90 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LP4052 데이터시트(HTML) 72 Page - ATMEL Corporation

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72
3547F–MICRO–6/06
AT89LP2052/LP4052
22.5.2
Power-down Sequence
Execute this sequence to power-down the device after serial programming.
1.
Tri-state MOSI (P1.5).
2.
Bring SCK (P1.7) to “L”.
3.
Bring RST to “L”.
4.
Bring SS (P1.4) to “L”
5.
Power off Vcc.
Figure 22-23. Serial Programming Power-down Sequence
Note:
The waveforms on this page are not to scale.
22.5.3
ISP Start Sequence
Execute this sequence to enter ISP when the device is already operational.
1.
Bring SS (P1.4) to “H”.
2.
Tri-state MISO (P1.6).
3.
Bring RST to “H”.
4.
Bring SCK (P1.7) to “L”.
Figure 22-24. In-System Programming (ISP) Start Sequence
VCC
RST
SS
SCK
HIGH Z
MISO
HIGH Z
MOSI
VCC
RST
SS
SCK
HIGH Z
MOSI
HIGH Z
MISO
XTAL1



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