at89s52-33sc ATMEL Corporation, at89s52-33sc Datasheet - Page 28

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

25. Serial Programming Characteristics
Figure 25-1. Serial Programming Timing
Table 25-1.
28
Symbol
1/t
t
t
t
t
t
t
t
t
CLCL
SHSL
SLSH
OVSH
SHOX
SLIV
ERASE
SWC
CLCL
AT89S52
Serial Programming Characteristics, T
Parameter
Oscillator Frequency
Oscillator Period
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
Chip Erase Instruction Cycle Time
Serial Byte Write Cycle Time
MOSI
MISO
SCK
t
OVSH
A
t
= -40°C to 85°C, V
SHSL
8 t
2 t
8 t
t
Min
CLCL
t
30
10
CLCL
CLCL
CLCL
3
SHOX
CC
= 4.0 - 5.5V (Unless Otherwise Noted)
t
SLSH
Typ
16
t
SLIV
64 t
CLCL
Max
500
33
32
+ 400
1919C–MICRO–3/05
Units
MHz
ms
ns
ns
ns
ns
ns
ns
µs