Atmel ATtiny25

149
7598H–AVR–07/09
ATtiny25/45/85
21.9 High-voltage Serial Programming Characteristics
Figure 21-7. High-voltage Serial Programming Timing
Table 21-17. High-voltage Serial Programming Characteristics T
A
= 25°C ±10%,
V
CC
= 5.0V ±10% (Unless otherwise noted)
Symbol Parameter Min Typ Max Units
t
SHSL
SCI (PB3) Pulse Width High 110 ns
t
SLSH
SCI (PB3) Pulse Width Low 110 ns
t
IVSH
SDI (PB0), SII (PB1) Valid to SCI (PB3) High 50 ns
t
SHIX
SDI (PB0), SII (PB1) Hold after SCI (PB3) High 50 ns
t
SHOV
SCI (PB3) High to SDO (PB2) Valid 16 ns
t
WLWH_PFB
Wait after Instr. 3 for Write Fuse Bits 2.5 ms
CK
CC