ATMEGA324A-PU Atmel, ATMEGA324A-PU Datasheet - Page 162
ATMEGA324A-PU
Manufacturer Part Number
ATMEGA324A-PU
Description
IC MCU AVR 32K 20MHZ 40PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA324A-PU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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
40-DIP (0.600", 15.24mm)
Controller Family/series
Atmega
No. Of I/o's
32
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
20MHz
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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17. SPI – Serial Peripheral Interface
17.1
17.2
8272A–AVR–01/10
Features
Overview
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•
•
•
•
•
•
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The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P and peripheral devices or between
several AVR devices.
USART can also be used in Master SPI mode, see
The Power Reduction SPI bit, PRSPI, in
50 must be written to zero to enable SPI module.
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Full-duplex, Three-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Seven Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wake-up from Idle Mode
Double Speed (CK/2) Master SPI Mode
”PRR – Power Reduction Register” on page 49
”USART in SPI Mode” on page
199.
on page
162
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