AT89S8252-16JA ATMEL [ATMEL Corporation], AT89S8252-16JA Datasheet - Page 30

• Manufacturer Part Number: AT89S8252-16JA
• Description: 8-Bit Microcontroller with 8K Bytes Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Serial Downloading Waveforms
Serial Programming Characteristics
Figure 16. Serial Programming Timing
Table 11. Serial Programming Characteristics, T
30
Symbol
1/t
t
t
t
t
t
CLCL
SHSL
SLSH
OVSH
SHOX
CLCL
AT89S8252
Parameter
Oscillator Frequency
Oscillator Period
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SERIAL CLOCK INPUT
SCK/P1.7
SERIAL DATA INPUT
MISO/P1.6
MOSI/P1.5
SERIAL DATA OUTPUT
MOSI
MISO
SCK
t
OVSH
A
MSB
MSB
= -40° C to 85° C, V
7
t
SHSL
6
5
24 t
24 t
2 t
t
41.6
Min
CLCL
CLCL
0
CLCL
4
CLCL
t
SHOX
CC
3
= 4.0 - 6.0V (Unless Otherwise Noted)
2
t
SLSH
1
Typ
LSB
LSB
0
Max
24
0401F–MICRO–11/03
Units
MHz
ns
ns
ns
ns
ns