High-Voltage Serial Programming Characteristics - Atmel ATtiny25 Manual

21.9

High-voltage Serial Programming Characteristics

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