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AT89LP2052 Datenblatt(PDF) 73 Page - ATMEL Corporation

Teilenummer AT89LP2052
Bauteilbeschribung  8-bit Microcontroller with 2/4-Kbyte Flash
PDF  90 Pages
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Hersteller  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LP2052 Datenblatt(HTML) 73 Page - ATMEL Corporation

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3547F–MICRO–6/06
AT89LP2052/LP4052
22.5.4
ISP Exit Sequence
Execute this sequence to exit ISP and resume execution.
1.
Bring SS (P1.4) to “H”.
2.
Tri-state MOSI (P1.5).
3.
Tri-state SCK (P1.7).
4.
Bring RST to “L”.
5.
Tri-state SS.
Figure 22-25. In-System Programming (ISP) Exit Sequence
Note:
The waveforms on this page are not to scale.
22.5.5
ISP Byte Sequence
The ISP byte sequence is shown in Figure 22-26.
• Data shifts in/out MSB first.
• MISO changes at falling edge of SCK.
• MOSI is sampled at rising edge of SCK.
Figure 22-26. ISP Byte Sequence
VCC
RST
SS
SCK
HIGH Z
MOSI
HIGH Z
MISO
XTAL1
7
7
6
6
5
5
4
4
3
3
2
2
1
1
0
0
MOSI
MISO
SCK
Data Sampled



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