Rainbow Electronics AT90S1200 - Manual (Page 47)

47
AT90S1200
0838H–AVR–03/02
Serial Programming
Characteristics Figure 36. Serial Programming Timing
Table 20. 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 - 4.0V) 0 4.0 MHz
t
CLCL
Oscillator Period (V
CC
= 2.7 - 4.0V) 250.0 ns
1/t
CLCL
Oscillator Frequency (V
CC
= 4.0 - 6.0V) 0 12.0 MHz
t
CLCL
Oscillator Period (V
CC
= 4.0 - 6.0V) 83.3 ns
t
SHSL
SCK Pulse Width High 4.0 t
CLCL
ns
t
SLSH
SCK Pulse Width Low t
CLCL
ns
t
OVSH
MOSI Setup to SCK High 1.25 t
CLCL
ns
t
SHOX
MOSI Hold after SCK High 2.5 t
CLCL
ns
t
SLIV
SCK Low to MISO Valid 10.0 16.0 32.0 ns
Table 21. 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 22. 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