ATtiny44 Automotive Atmel Corporation, ATtiny44 Automotive Datasheet - Page 7
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ATtiny44 Automotive
Manufacturer Part Number
ATtiny44 Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny44 Automotive
Flash (kbytes)
4 Kbytes
Pin Count
14
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
6
Hardware Qtouch Acquisition
No
Max I/o Pins
12
Ext Interrupts
12
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.25
Eeprom (bytes)
256
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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5. CPU Core
5.1
5.2
7701E–AVR–02/11
Overview
Architectural Overview
This section discusses the Atmel
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 5-1.
In order to maximize performance and parallelism, the AVR
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
instruction 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.
Control Lines
Instruction
Instruction
Program
Memory
Decoder
Register
Flash
Block Diagram of the AVR Architecture
Atmel ATtiny24/44/84 [Preliminary]
Program
Counter
®
AVR
®
core architecture in general. The main function of the
and Control
EEPROM
Registrers
I/O Lines
Purpose
General
SRAM
Data Bus 8-bit
Status
32 x 8
Data
ALU
®
uses a Harvard architecture, with
Timer/Counter 0
Timer/Counter 1
Serial Interface
Comparator
Watchdog
Universal
Interrupt
Timer
Analog
Unit
7
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