Rainbow Electronics ATmega8HVD - Manual (Page 149)

149
8052B–AVR–09/08
ATmega4HVD/8HVD
26.6.2 High-voltage Serial Programming
Figure 26-3. High-voltage Serial Programming Timing
Table 26-9. High-voltage Serial Programming Characteristics T
A
= 25
°
C ± 10%, V
CC
= 3.5V
± 10% (Unless otherwise noted)
Symbol Parameter Min Typ Max Units
t
SHSL
SCI Pulse Width High 1/f
ck
ns
t
SLSH
SCI Pulse Width Low 1/f
ck
ns
t
IVSH
SDI, SII Valid to SCI High 50 ns
t
SHIX
SDI, SII Hold after SCI High 50 ns
t
SHOV
SCI High to SDO Valid 16 ns
t
WLWH_PFB
Wait after Instr. 3 for Write Fuse Bits 2.5 ms
SDI , SII
SDO
SCI
t
IVSH
t
SHSL
t
SLSH
t
SHIX
t
SHOV