ATMEGA48A-CCU Atmel, ATMEGA48A-CCU Datasheet - Page 167
ATMEGA48A-CCU
Manufacturer Part Number
ATMEGA48A-CCU
Description
IC MCU AVR 4K FLASH VFBGA
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA48A-CCU
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
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 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
32-UFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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18. SPI – Serial Peripheral Interface
18.1
18.2
8271C–AVR–08/10
Features
Overview
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•
•
•
•
•
•
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The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P and peripheral devices or between sev-
eral AVR devices.
The USART can also be used in Master SPI mode, see “USART in SPI Mode” on page 205. The
PRSPI bit in
module.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
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
”Minimizing Power Consumption” on page 42
must be written to zero to enable SPI
167
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