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ATtiny48 Datasheet(PDF) 213 Page - ATMEL Corporation

Part # ATtiny48
Description  8-bit Microcontroller with 4/8K Bytes In-System Programmable Flash
PDF  266 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny48 Datasheet(HTML) 213 Page - ATMEL Corporation

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213
8008C–AVR–03/09
ATtiny48/88
Notes:
1.
tWLRH is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
commands.
2.
tWLRH_CE is valid for the Chip Erase command.
21.11 Serial Programming Characteristics
Figure 21-9. Serial Programming Timing
Figure 21-10. Serial Programming Waveforms
tWLRH_CE
WR Low to RDY/BSY High for Chip Erase
(2)
7.5
9
ms
tXLOL
CLKI Low to OE Low
0
ns
tBVDV
BS1 Valid to DATA valid
0
250
ns
tOLDV
OE Low to DATA Valid
250
ns
tOHDZ
OE High to DATA Tri-stated
250
ns
Table 21-9.
Parallel Programming Characteristics, T
A = 25°C, VCC = 5V (Continued)
Symbol
Parameter
Min
Typ
Max
Units
Table 21-10. Serial Programming Characteristics, T
A = -40°C to 85°C, VCC = 1.8 – 5.5V
(Unless Otherwise Noted)
Symbol
Parameter
Min
Typ
Max
Units
1/tCLCL
Oscillator Frequency (V
CC = 2.7V – 5.5V)
0
6
MHz
tCLCL
Oscillator Period (V
CC = 2.7V – 5.5V)
166
ns
1/tCLCL
Oscillator Frequency (VCC = 4.5V – 5.5V)
0
12
MHz
MOSI
MISO
SCK
t
OVSH
t
SHSL
t
SLSH
t
SHOX
t
SLIV
MSB
MSB
LSB
LSB
SERIAL CLOCK INPUT
(SCK)
SERIAL DATA INPUT
(MOSI)
(MISO)
SAMPLE
SERIAL DATA OUTPUT



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