ATTINY261-20MUR Atmel, ATTINY261-20MUR Datasheet - Page 193
ATTINY261-20MUR
Manufacturer Part Number
ATTINY261-20MUR
Description
IC MCU AVR 2K FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY261-20MUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19.7
2588E–AVR–08/10
Serial Programming Characteristics
Figure 19-4. Serial Programming Waveforms
Figure 19-5. Serial Programming Timing
Table 19-8.
Note:
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
Symbol
1/t
1/t
t
t
t
t
t
t
SERIAL DATA INPUT
t
OVSH
SHOX
CLCL
CLCL
SHSL
SLSH
SLIV
CLCL
CLCL
1. 2 t
Parameter
Oscillator Frequency (ATtiny261V/461V/861V)
Oscillator Period (ATtiny261V/461V/861V)
Oscillator Frequency
(ATtiny261/461/861, V
Oscillator Period
(ATtiny261/461/861, V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
SAMPLE
MOSI
MISO
CLCL
SCK
Serial Programming Characteristics, T
(Unless Otherwise Noted)
(MOSI)
(MISO)
(SCK)
for f
ck
< 12 MHz, 3 t
t
OVSH
MSB
MSB
CC
CC
= 4.5 - 5.5V)
= 4.5 - 5.5V)
CLCL
t
for f
SHSL
ck
>= 12 MHz
A
t
= -40°C to +85°C, V
SHOX
2 t
2 t
2 t
t
CLCL
CLCL
Min
250
CLCL
50
CLCL
0
0
(1)
(1)
t
SLSH
Typ
CC
t
SLIV
= 1.8 - 5.5V
Max
100
20
4
LSB
LSB
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
193
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