ATTINY44-20SSU Atmel, ATTINY44-20SSU Datasheet - Page 184

• Manufacturer Part Number: ATTINY44-20SSU
• Description: IC MCU AVR 4K FLASH 20MHZ 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44-20SSU

• 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: 14-SOIC (3.9mm Width), 14-SOL
• Cpu Family: ATtiny
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/USI
• Total Internal Ram Size: 256Byte
• # I/os (max): 12
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: SOIC
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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184
High-Voltage Serial Programming Characteristics
ATtiny24/44/84
Figure 20-6. High-voltage Serial Programming Timing
Table 20-13. High-voltage Serial Programming Characteristics
t
WLWH_PFB
Symbol
SDI (PA6), SII (PA5)
t
t
t
t
t
SHOV
SHSL
SLSH
IVSH
SHIX
T
Parameter
SCI (PB0) Pulse Width High
SCI (PB0) Pulse Width Low
SDI (PA6), SII (PB1) Valid to SCI (PB0) High
SDI (PA6), SII (PB1) Hold after SCI (PB0) High
SCI (PB0) High to SDO (PA4) Valid
Wait after Instr. 3 for Write Fuse Bits
A
SDO (PA4)
SCI (PB0)
= 25°C, V
CC
= 5V (Unless otherwise noted)
t
IVSH
t
SHSL
t
SHOV
t
SHIX
Min
125
125
50
50
Typ
2.5
16
t
SLSH
Max
8006K–AVR–10/10
Units
ms
ns
ns
ns
ns
ns