ATTINY20-SSU Atmel, ATTINY20-SSU Datasheet - Page 59

• Manufacturer Part Number: ATTINY20-SSU
• Description: MCU AVR 2KB FLASH 12MHZ 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY20-SSU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Ram Size: 128 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: *
• Processor Series: ATtiny
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SPI, TWI
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

10.4.7
10.4.8
10.4.9
8235B–AVR–04/11
PORTB – Port B Data Register
DDRB – Port B Data Direction Register
PINB – Port B Input Pins
Bit
0x06
Read/Write
Initial Value
Bit
0x05
Read/Write
Initial Value
Bit
0x04
Read/Write
Initial Value
R
R
R
7
–
0
7
–
0
7
–
0
R
R
R
6
–
0
6
–
0
6
–
0
R
R
R
5
–
0
5
–
0
5
–
0
R
R
R
4
–
0
4
–
0
4
–
0
PORTB3
PINB3
DDB3
R/W
R/W
R/W
N/A
3
0
3
0
3
PORTB2
PINB2
DDB2
R/W
R/W
R/W
N/A
2
2
0
2
0
PORTB1
PINB1
DDB1
R/W
R/W
R/W
N/A
1
1
0
1
0
PORTB0
ATtiny20
PINB0
DDB0
R/W
R/W
R/W
N/A
0
0
0
0
0
PORTB
DDRB
PINB
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