ATMEGA32U2-MUR Atmel, ATMEGA32U2-MUR Datasheet - Page 138
ATMEGA32U2-MUR
Manufacturer Part Number
ATMEGA32U2-MUR
Description
MCU AVR 32K FLASH 16MHZ 32VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32U2-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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17. SPI – Serial Peripheral Interface
17.1
17.2
7799D–AVR–11/10
Features
Overview
•
•
•
•
•
•
•
•
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATmega8U2/16U2/32U2 and peripheral devices or between several AVR devices.
USART can also be used in Master SPI mode, see “USART in SPI Mode” on page 176.
The Power Reduction SPI bit, PRSPI, in
50 must be written to zero to enable SPI module.
Figure 17-1. 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
Figure 1-1 on page
(1)
2, and
“Minimizing Power Consumption” on page 44
Table 12-6 on page 77
ATmega8U2/16U2/32U2
for SPI pin placement.
on page
138
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