Serial programming characteristics, Mosi miso sck t – Rainbow Electronics AT90LS4433 User Manual
Page 97
97
AT90S/LS4433
1042G–AVR–09/02
Serial Programming
Characteristics
Figure 68. Serial Programming Timing
Table 36. Serial Programming Characteristics, T
A
= -40
°C to 85°C, V
CC
= 2.7 - 6.0V
(unless otherwise noted)
Symbol
Parameter
Min
Typ
Max
Units
1/t
CLCL
Oscillator Frequency (V
CC
= 2.7 - 6.0V)
0
4
MHz
t
CLCL
Oscillator Period (V
CC
= 2.7 - 6.0V)
250
ns
1/t
CLCL
Oscillator Frequency (V
CC
= 4.0 - 6.0V)
0
8
MHz
t
CLCL
Oscillator Period (V
CC
= 4.0 - 6.0V)
125
ns
t
SHSL
SCK Pulse Width High
2 t
CLCL
ns
t
SLSH
SCK Pulse Width Low
2 t
CLCL
ns
t
OVSH
MOSI Setup to SCK High
t
CLCL
ns
t
SHOX
MOSI Hold after SCK High
2 t
CLCL
ns
t
SLIV
SCK Low to MISO Valid
10
16
32
ns
Table 37. Minimum Wait Delay after the Chip Erase Instruction
Symbol
3.2V
3.6V
4.0V
5.0V
t
WD_ERASE
18 ms
14 ms
12 ms
8 ms
Table 38. Minimum Wait Delay after Writing a Flash or EEPROM Location
Symbol
3.2V
3.6V
4.0V
5.0V
t
WD_PROG
9 ms
7 ms
6 ms
4 ms
MOSI
MISO
SCK
t
OVSH
t
SHSL
t
SLSH
t
SHOX
t
SLIV