at89s53-33pc ATMEL Corporation, at89s53-33pc Datasheet - Page 22

• Manufacturer Part Number: at89s53-33pc
• Description: At89s53, In-system Programmable Microcontroller With 12k Bytes Flash. For New Designs Use At89s8253.
• Manufacturer: ATMEL Corporation

Figure 13. Programming the Flash Memory
Figure 14. Verifying the Flash Memory
22
PROGRAMMING
MODES TABLE
3-24 Mhz
PROGRAMMING
SEE FLASH
3-24 Mhz
MODES TABLE
SEE FLASH
0000H/2FFFH
0000H/2FFFH
ADDR.
ADDR.
AT89S53
A8 - A13
A0 - A7
A8 - A13
A0 - A7
P1
P2.0 - P2.5
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
P1
P2.0 - P2.5
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
AT89S53
AT89S53
PSEN
PSEN
RST
ALE
RST
ALE
V
V
EA
P0
EA
P0
CC
CC
+5V
PGM DATA
(USE 10K
PULLUPS)
+5V
PGM
DATA
PROG
V
V
V
V
V
PP
I H
I H
PP
I H
Figure 15. Flash Serial Downloading
3-24 Mhz
DATA OUTPUT
INSTRUCTION
CLOCK IN
INPUT
P1.5/MOSI
P1.6/MISO
P1.7/SCK
XTAL2
XTAL1
GND
AT89S53
RST
V
CC
+4.0V to 6.0V
0787E–MICRO–3/06
V
I H