125
ATtiny26(L)
1477G–AVR–03/05
Serial Programming
Characteristics
Figure 69. Serial Programming Timing
Note:
1. 2 t
CLCL
for f
ck
< 12 MHz, 3 t
CLCL
for f
ck
>= 12 MHz
Table 62. Serial Programming Characteristics, T
A
= -40
°
C to 85
°
C, V
CC
= 2.7V - 5.5V
(Unless Otherwise Noted)
Symbol
Parameter
Min
Typ
Max
Units
1/t
CLCL
Oscillator Frequency (V
CC
= 2.7 - 5.5 V)
0
8
MHz
t
CLCL
Oscillator Period (V
CC
= 2.7 - 5.5 V)
125
ns
1/t
CLCL
Oscillator Frequency (V
CC
= 4.5 - 5.5 V)
0
16
MHz
t
CLCL
Oscillator Period (V
CC
= 4.5 - 5.5 V)
62.5
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
20
ns
MOSI
MISO
SCK
t
OVSH
t
SHSL
t
SLSH
t
SHOX
t
SLIV
