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AT89LS8252
4-158
Figure 14.
Programming the Flash/EEPROM Memory
P1
P2.6
P2.7
P3.6
P3.7
P2.0 - P2.5
A0 - A7
ADDR.
0000H/27FFH
SEE FLASH
PROGRAMMING
MODES TABLE
3-12 MHz
A8 - A13
P0
+5V
PGM
DATA
PROG
V
V
ALE
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
P2.7
P3.6
P3.7
P2.0 - P2.5
A0 - A7
ADDR.
0000H/27FFH
SEE FLASH
PROGRAMMING
MODES TABLE
3-12 MHz
A8 - A13
P0
+5V
PGM DATA
(USE 10K
PULLUPS)
V
V
ALE
XTAL2
EA
RST
PSEN
XTAL1
GND
V
AT89LS8252
V
CC
IH
PP
IH
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