202
9152BINDCO02/10
ATA8743
Note:
1. 2 t
CLCL
for f
ck
< 12 MHz, 3 t
CLCL
for f
ck
>= 12 MHz
29.7 High-voltage Serial Programming Characteristics
Figure 29-5. High-voltage Serial Programming Timing
Table 29-8. Serial Programming Characteristics, T
A
= -40癈 to 125癈, V
CC
= 2.7 - 5.5V
(Unless Otherwise Noted)
Symbol
Parameter
Min
Typ
Max
Units
1/t
CLCL
Oscillator Frequency (ATtiny24/44/84V)
0
4
MHz
t
CLCL
Oscillator Period (ATtiny24/44/84V)
250
ns
1/t
CLCL
Oscillator Frequency (ATtiny24/44/84, V
CC
= 4.5V -
5.5V)
0
20
MHz
t
CLCL
Oscillator Period (ATtiny24/44/84, V
CC
= 4.5V - 5.5V)
50
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
TBD
TBD
TBD
ns
Table 29-9. High-voltage Serial Programming Characteristics
T
A
= 25癈 ?10%, V
CC
= 5.0V ?10% (Unless otherwise noted)
Symbol
Parameter
Min
Typ
Max
Units
t
SHSL
SCI (PB0) Pulse Width High
110
ns
t
SLSH
SCI (PB0) Pulse Width Low
110
ns
t
IVSH
SDI (PA6), SII (PB1) Valid to SCI (PB0) High
50
ns
t
SHIX
SDI (PA6), SII (PB1) Hold after SCI (PB0) High
50
ns
t
SHOV
SCI (PB0) High to SDO (PA4) Valid
16
ns
t
WLWH_PFB
Wait after Instr. 3 for Write Fuse Bits
2.5
ms
CK
CC
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