Rainbow-electronics AT89LS8252 Manual do Utilizador descarregar pdf (Página 22)

AT89LS8252

4-158

Figure 14.

Programming the Flash/EEPROM Memory

P1

P2.6

P3.6

P2.0 - P2.5

A0-A7

ADDR.

0000H/27FFH

SEE FLASH

PROGRAMMING

MODES TABLE

3-12 MHz

A8 - A13

P0

+5V

P2.7

PGM

DATA

PROG

V

V

ALE

P3.7

XTAL2 EA

RST

PSEN

XTAL1

GND

V

AT89LS8252

PP

IH

CC

Figure 15.

Flash/EEPROM Serial Downloading

Figure 16.

Verifying the Flash/EEPROM Memory

P1

P2.6

P3.6

P2.0 - P2.5

A0-A7

ADDR.

0000H/27FFH

SEE FLASH

PROGRAMMING

MODES TABLE

3-12 MHz

A8 - A13

P0

+5V

P2.7

PGM DATA

(USE 10K

PULLUPS)

V

V

ALE

P3.7

XTAL2 EA

RST

PSEN

XTAL1

GND

V

AT89LS8252

V

CC

IH

PP

IH

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