Serial Programming Characteristics
Figure 18. Serial Programming Timing
MOSI
tSLSH
tOVSH
tSHOX
SCK
tSHSL
MISO
tSLIV
Table 10. Serial Programming Characteristics, TA = -40° C to 85°C, VCC = 4.0 - 5.5V (Unless otherwise noted)
Symbol
1/tCLCL
tCLCL
Parameter
Min
0
Typ
Max
Units
MHz
ns
Oscillator Frequency
33
Oscillator Period
30
tSHSL
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
2 tCLCL
2 tCLCL
tCLCL
2 tCLCL
10
ns
tSLSH
ns
tOVSH
tSHOX
tSLIV
ns
ns
16
32
500
ns
tERASE
tSWC
ms
µs
64 tCLCL + 400
AT89S52
22