ATTINY44-20SSUR Atmel, ATTINY44-20SSUR Datasheet - Page 183
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ATTINY44-20SSUR
Manufacturer Part Number
ATTINY44-20SSUR
Description
MCU AVR 4KB FLASH 20MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24-20MU.pdf
(238 pages)
Specifications of ATTINY44-20SSUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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20.8
8006K–AVR–10/10
Serial Programming Characteristics
Figure 20-4. Serial Programming Timing
Figure 20-5. Serial Programming Waveform
Table 20-12. Serial Programming Characteristics, T
Note:
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
Symbol
1/t
1/t
SERIAL DATA INPUT
t
t
t
t
t
t
OVSH
SHOX
CLCL
CLCL
SHSL
SLSH
CLCL
CLCL
1. 2 t
Parameter
Oscillator Frequency (ATtiny24/44/84V)
Oscillator Period (ATtiny24/44/84V)
Oscillator Freq. (ATtiny24/44/84, V
Oscillator Period (ATtiny24/44/84, V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SAMPLE
MOSI
MISO
CLCL
(MOSI)
(MISO)
(Unless Otherwise Noted)
SCK
(SCK)
for f
ck
< 12 MHz, 3 t
t
OVSH
MSB
MSB
CLCL
for f
t
SHSL
ck
CC
CC
>= 12 MHz
= 4.5V - 5.5V)
= 4.5V - 5.5V)
A
= -40°C to +85°C, V
t
SHOX
2 t
2 t
2 t
t
CLCL
CLCL
Min
250
CLCL
50
CLCL
0
0
ATtiny24/44/84
(1)
(1)
t
SLSH
CC
Typ
= 1.8 - 5.5V
Max
20
4
LSB
LSB
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
183
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