ATMEGA88-20MUR Atmel, ATMEGA88-20MUR Datasheet - Page 161
ATMEGA88-20MUR
Manufacturer Part Number
ATMEGA88-20MUR
Description
MCU AVR 8K FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA88-20MUR
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
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
*
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
SPI/TWI/USART
Total Internal Ram Size
1KB
# I/os (max)
23
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
MLF EP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19. SPI – Serial peripheral interface
19.1
19.2
2545T–AVR–05/11
Features
Overview
•
•
•
•
•
•
•
•
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
Atmel ATmega48/88/168 and peripheral devices or between several AVR devices.
The USART can also be used in Master SPI mode,
PRSPI bit in
module.
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 41
see “USART in SPI mode” on page
must be written to zero to enable SPI
ATmega48/88/168
199. The
161
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