At89ls51 – Rainbow Electronics AT89LS51 User Manual

Page 17

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17

AT89LS51

3053A–8051–05/02

Figure 7. Flash Memory Serial Downloading

Flash Programming and Verification Waveforms – Serial Mode

Figure 8. Serial Programming Waveforms

P1.7/SCK

DATA OUTPUT

INSTRUCTION

INPUT

CLOCK IN

3 - 16 MHz

P1.5/MOSI

V

IH

XTAL2

RST

XTAL1

GND

V

CC

AT89LS51

P1.6/MISO

V

CC

7

6

5

4

3

2

1

0

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