ATTINY25_09 Datasheet, PDF (149/196 Pages) ATMEL Corporation – 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

21.9 High-voltage Serial Programming Characteristics
Figure 21-7. High-voltage Serial Programming Timing
CC
CK
ATtiny25/45/85
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
t_SHSL
t_SLSH
t_IVSH
t_SHIX
t_SHOV
t_{WLWH_PFB}
SCI (PB3) Pulse Width High
SCI (PB3) Pulse Width Low
SDI (PB0), SII (PB1) Valid to SCI (PB3) High
SDI (PB0), SII (PB1) Hold after SCI (PB3) High
SCI (PB3) High to SDO (PB2) Valid
Wait after Instr. 3 for Write Fuse Bits
110
110
50
50
16
2.5
Units
ns
ns
ns
ns
ns
ms
7598H–AVR–07/09
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