ATTINY44A-SSN Atmel, ATTINY44A-SSN Datasheet - Page 166
![IC MCU AVR 4KB FLASH 20MHZ 14SOI](/photos/7/39/73946/313-14-soic_sml.jpg)
ATTINY44A-SSN
Manufacturer Part Number
ATTINY44A-SSN
Description
IC MCU AVR 4KB FLASH 20MHZ 14SOI
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44A-SSN
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, 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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19.6
19.7
166
High-voltage Serial Programming
High-Voltage Serial Programming Algorithm
ATtiny24A/44A/84A
After data is loaded to the page buffer, program the EEPROM page, see
165.
This section describes how to program and verify Flash Program memory, EEPROM Data mem-
ory, Lock bits and Fuse bits in the ATtiny24A/44A/84A.
Figure 19-3.
Table 19-13. Pin Name Mapping
The minimum period for the Serial Clock Input (SCI) during High-voltage Serial Programming is
220 ns.
Table 19-14. Pin Values Used to Enter Programming Mode
To program and verify the ATtiny24A/44A/84A in the High-voltage Serial Programming mode,
the following sequence is recommended (See instruction formats in
Signal Name in High-voltage
Serial Programming Mode
SDI
SII
SDO
SCI
Pin
PA0
PA1
PA2
High-voltage Serial Programming
SCI
+11.5 - 12.5V
Symbol
Prog_enable[0]
Prog_enable[1]
Prog_enable[2]
PB3
PB0
PA2:0
GND
Pin Name
PA6
PA5
PA4
PB0
(RESET)
I/O
O
I
I
I
VCC
PA4
PA5
PA6
Function
Serial Data Input
Serial Instruction Input
Serial Data Output
Serial Clock Input (min. 220ns period)
+4.5 - 5.5V
Table 19-16 on page
SDO
SII
SDI
Figure 19-2 on page
Value
8183C–AVR–03/11
0
0
0
170):
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