Datasheet

181
8183F–AVR–06/12
ATtiny24A/44A/84A
Note: 1. 2 t
CLCL
for f
ck
< 12 MHz, 3 t
CLCL
for f
ck
>= 12 MHz
20.9 High-Voltage Serial Programming Characteristics
Figure 20-5. High-voltage Serial Programming Timing
t
CLCL
Oscillator Period (V
CC
= 4.5V - 5.5V) 50 ns
t
SHSL
SCK Pulse Width High 2 t
CLCL
(1)
ns
t
SLSH
SCK Pulse Width Low 2 t
CLCL
(1)
ns
t
OVSH
MOSI Setup to SCK High t
CLCL
ns
t
SHOX
MOSI Hold after SCK High 2 t
CLCL
ns
Table 20-11. Serial Programming Characteristics, T
A
= -40°C to +85°C, V
CC
= 1.8 - 5.5V
(Unless Otherwise Noted)
Symbol Parameter Min Typ Max Units
Table 20-12. High-voltage Serial Programming Characteristics
T
A
= 25°C, V
CC
= 5V (Unless otherwise noted)
Symbol Parameter Min Typ Max Units
t
SHSL
SCI (PB0) Pulse Width High 125 ns
t
SLSH
SCI (PB0) Pulse Width Low 125 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
SDI (PA6), SII (PA5)
SDO (PA4)
SCI (PB0)
t
IVSH
t
SHSL
t
SLSH
t
SHIX
t
SHOV