at89s52-33sc ATMEL Corporation, at89s52-33sc Datasheet - Page 26

• Manufacturer Part Number: at89s52-33sc
• Description: At89s52 , 8-bit Microcontroller With 8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

24. Flash Programming and Verification Waveforms – Serial Mode
26
AT89S52
Figure 23-2. Flash Memory Serial Downloading
Figure 24-1. Serial Programming Waveforms
3-33 MHz
DATA OUTPUT
INSTRUCTION
CLOCK IN
INPUT
7
6
5
P1.5/MOSI
P1.6/MISO
P1.7/SCK
XTAL2
XTAL1
GND
AT89S52
4
RST
V
3
CC
2
V
CC
V
IH
1
0
1919C–MICRO–3/05