ATTINY44-20SSUR Atmel, ATTINY44-20SSUR Datasheet - Page 178
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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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20.5.1
20.5.2
178
ATtiny24/44/84
Standard Power-On Reset
Enhanced Power-On Reset
Two versions of power-on reset have been implemented, as follows.
This implementation of power-on reset existed in early versions of ATtiny24/44/84. The table
below describes the characteristics of this power-on reset and it is valid for the following devices,
only:
Note:
Table 20-5.
Notes:
This implementation of power-on reset exists in newer versions of ATtiny24/44/84. The table
below describes the characteristics of this power-on reset and it is valid for the following devices,
only:
Table 20-6.
Notes:
• ATtiny24, revision D, and older
• ATtiny44, revision C, and older
• ATtiny84, revision A
• ATtiny24, revision E, and newer
• ATtiny44, revision D, and newer
• ATtiny84, revision B, and newer
Symbol
Symbol
SR
SR
V
V
V
V
POR
POR
POA
POA
ON
ON
Revisions are marked on the package (packages 14P3 and 14S1: bottom, package 20M1: top)
1. Values are guidelines only.
2. Threshold where device is released from reset when voltage is rising.
3. The power-on reset will not work unless the supply voltage has been below V
1. Values are guidelines only.
2. Threshold where device is released from reset when voltage is rising.
3. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-on slope rate
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-On Slope Rate
Characteristics of Standard Power-On Reset. T
Characteristics of Enhanced Power-On Reset.
(2)
(2)
(3)
(3)
Min
Min
0.05
0.01
0.01
T
A
0.7
1.1
0.6
A
= -40 to +85°C
(1)
= -40 to +85°C
(1)
Typ
Typ
1.0
0.9
1.4
1.3
(1)
(1)
Max
Max
1.4
1.3
4.5
POA
1.6
1.6
POA
8006K–AVR–10/10
(1)
(1)
.
.
Units
Units
V/ms
V/ms
V
V
V
V
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