ATTINY44A-SSN Atmel, ATTINY44A-SSN Datasheet - Page 284

• 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

iv
ATtiny24A/44A/84A
17 debugWIRE On-chip Debug System .................................................. 150
18 Self-Programming the Flash ............................................................... 152
19 Memory Programming ......................................................................... 158
20 Electrical Characteristics .................................................................... 173
17.1
17.2
17.3
17.4
17.5
17.6
18.1
18.2
18.3
18.4
18.5
18.6
18.7
18.8
18.9
19.1
19.2
19.3
19.4
19.5
19.6
19.7
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
Features ........................................................................................................150
Overview ........................................................................................................150
Physical Interface ..........................................................................................150
Software Break Points ...................................................................................151
Limitations of debugWIRE .............................................................................151
Register Description ......................................................................................151
Performing Page Erase by SPM ....................................................................152
Filling the Temporary Buffer (Page Loading) .................................................152
Performing a Page Write ...............................................................................153
Addressing the Flash During Self-Programming ...........................................153
EEPROM Write Prevents Writing to SPMCSR ..............................................154
Reading Lock, Fuse and Signature Data from Software ...............................154
Preventing Flash Corruption ..........................................................................156
Programming Time for Flash when Using SPM ............................................156
Register Description ......................................................................................156
Program And Data Memory Lock Bits ...........................................................158
Fuse Bytes .....................................................................................................159
Device Signature Imprint Table .....................................................................160
Page Size ......................................................................................................161
Serial Programming .......................................................................................162
High-voltage Serial Programming ..................................................................166
High-Voltage Serial Programming Algorithm .................................................166
Absolute Maximum Ratings* .........................................................................173
DC Characteristics .........................................................................................173
Speed ............................................................................................................174
Clock Characteristics .....................................................................................175
System and Reset Characteristics ................................................................176
ADC Characteristics ......................................................................................177
Analog Comparator Characteristics ...............................................................180
Serial Programming Characteristics ..............................................................180
High-Voltage Serial Programming Characteristics ........................................181
8183C–AVR–03/11