ATMEGA645-16MUR Atmel, ATMEGA645-16MUR Datasheet - Page 148
ATMEGA645-16MUR
Manufacturer Part Number
ATMEGA645-16MUR
Description
MCU AVR 64KB FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA325-16MU.pdf
(362 pages)
Specifications of ATMEGA645-16MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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18. SPI – Serial Peripheral Interface
18.1
18.2
2570M–AVR–04/11
Features
Overview
The Atmel ATmega325/3250/645/6450 SPI includes the following features:
•
•
•
•
•
•
•
•
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
Atmel ATmega325/3250/645/6450 and peripheral devices or between several AVR devices.
The PRSPI bit in
SPI module.
Figure 18-1. SPI Block Diagram
Note:
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
1. Refer to
/2/4/8/16/32/64/128
DIVIDER
“Power Reduction Register” on page 37
Figure 1-1 on page
(1)
2, and
Table 13-3 on page 68
ATmega325/3250/645/6450
must be written to zero to enable the
for SPI pin placement.
148
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