ATTINY5-MAH Atmel, ATTINY5-MAH Datasheet - Page 6

• Manufacturer Part Number: ATTINY5-MAH
• Description: IC MCU AVR 512B FLASH 8UDFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY5-MAH

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Peripherals: POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 512B (256 x 16)
• Program Memory Type: FLASH
• Ram Size: 32 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-UFDFN Exposed Pad
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

4. CPU Core
4.1
6
Architectural Overview
ATtiny4/5/9/10
This section discusses the AVR core architecture in general. The main function of the CPU core
is to ensure correct program execution. The CPU must therefore be able to access memories,
perform calculations, control peripherals, and handle interrupts.
Figure 4-1.
In order to maximize performance and parallelism, the AVR uses a Harvard architecture – with
separate memories and buses for program and data. Instructions in the program memory are
executed with a single level pipelining. While one instruction is being executed, the next instruc-
tion is pre-fetched from the program memory. This concept enables instructions to be executed
in every clock cycle. The program memory is In-System Reprogrammable Flash memory.
The fast-access Register File contains 16 x 8-bit general purpose working registers with a single
clock cycle access time. This allows single-cycle Arithmetic Logic Unit (ALU) operation. In a typ-
ical ALU operation, two operands are output from the Register File, the operation is executed,
and the result is stored back in the Register File – in one clock cycle.
Control Lines
Instruction
Instruction
Program
Memory
Reg ister
Decoder
Flash
Block Diagram of the AVR Architecture
Program
Counter
and Con trol
Reg istrers
I/O Lines
Purpose
General
SRA M
Data Bus 8-bit
Status
16 x 8
Data
ALU
Timer/Counter 0
Comparator
Watchdog
Interrupt
Timer
Analog
Unit
ADC
8127D–AVR–02/10