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AT89LP51 bảng dữ liệu(PDF) 88 Page - ATMEL Corporation

tên linh kiện AT89LP51
Giải thích chi tiết về linh kiện  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
PDF  113 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LP51 bảng dữ liệu(HTML) 88 Page - ATMEL Corporation

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3709B–MICRO–12/10
AT89LP51/52 - Preliminary
Figure 17-9. Serial Programming Power-up Sequence
17.9.2
Power-down Sequence
Execute this sequence to power-down the device after programming.
1.
Drive SCK low.
2.
Wait at least t
SSD and Tristate MOSI.
3.
Wait at least t
RHZ and drive RST low.
4.
Wait at least t
SSZ and tristate SCK.
5.
Wait no more than t
PWRDN and power off VDD.
Figure 17-10. Serial Programming Power-down Sequence
17.9.3
ISP Start Sequence
Execute this sequence to exit CPU execution mode and enter ISP mode when the device has
passed Power-On Reset and is already operational.
1.
Drive RST high.
2.
Wait t
RLZ + tSTL.
3.
Drive SCK low.
4.
Start programming session.
VDD
RST
RST
SCK
HIGH Z
MISO
HIGH Z
MOSI
tPWRUP
tPOR + tSUT
VDD
RST
SCK
HIGH Z
MISO
HIGH Z
MOSI
tPWRDN
tSSD
tSSZ
tRHZ



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