ATTINY20-SSU Atmel, ATTINY20-SSU Datasheet - Page 4

• 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

2. Overview
4
ATtiny20
ATtiny20 is a low-power CMOS 8-bit microcontroller based on the compact AVR enhanced
RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny20
achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize
power consumption versus processing speed.
Figure 2-1.
The AVR core combines a rich instruction set with 16 general purpose working registers and
system registers. All registers are directly connected to the Arithmetic Logic Unit (ALU), allowing
two independent registers to be accessed in one single instruction executed in one clock cycle.
PROGRAMMING
INSTRUCTION
INSTRUCTION
INTERFACE
PROGRAM
REGISTER
DECODER
CONTROL
DATA REGISTER
FLASH
LOGIC
LINES
ISP
PORT A
Block Diagram
V
DRIVERS
PORT A
CC
PA[7:0]
REG. PORT A
INTERRUPT
REGISTERS
DIRECTION
PROGRAM
REGISTER
COUNTER
GENERAL
PURPOSE
POINTER
STATUS
STACK
SRAM
UNIT
ALU
X
Y
Z
GND
8-BIT DATA BUS
DATA REGISTER
PORT B
MCU STATUS
OSCILLATOR
RESET FLAG
WATCHDOG
COUNTER0
COUNTER1
REGISTER
REGISTER
INTERNAL
TIMER/
TIMER/
TIMER
TWI
SPI
DRIVERS
PORT B
PB[3:0]
RESET
REG. PORT B
DIRECTION
COMPARATOR
OSCILLATOR
CALIBRATED
TIMING AND
CONTROL
ANALOG
ADC
8235B–AVR–04/11