ATMEGA168P-20MQ Atmel, ATMEGA168P-20MQ Datasheet - Page 416
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ATMEGA168P-20MQ
Manufacturer Part Number
ATMEGA168P-20MQ
Description
MCU AVR 16K FLASH 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168P-20MQ
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
16KB (8K 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
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8025L–AVR–7/10
18 SPI – Serial Peripheral Interface ......................................................... 164
19 USART0 ................................................................................................. 174
20 USART in SPI Mode ............................................................................. 202
17.3Timer/Counter Clock Sources .............................................................................143
17.4Counter Unit ........................................................................................................143
17.5Output Compare Unit ..........................................................................................144
17.6Compare Match Output Unit ................................................................................146
17.7Modes of Operation .............................................................................................147
17.8Timer/Counter Timing Diagrams .........................................................................151
17.9Asynchronous Operation of Timer/Counter2 .......................................................153
17.10Timer/Counter Prescaler ...................................................................................154
17.11Register Description ..........................................................................................156
18.1Features ..............................................................................................................164
18.2Overview .............................................................................................................164
18.3SS Pin Functionality ............................................................................................169
18.4Data Modes .........................................................................................................169
18.5Register Description ............................................................................................171
19.1Features ..............................................................................................................174
19.2Overview .............................................................................................................174
19.3Clock Generation .................................................................................................175
19.4Frame Formats ....................................................................................................178
19.5USART Initialization ............................................................................................180
19.6Data Transmission – The USART Transmitter ....................................................181
19.7Data Reception – The USART Receiver .............................................................184
19.8Asynchronous Data Reception ............................................................................188
19.9Multi-processor Communication Mode ................................................................191
19.10Register Description ..........................................................................................193
19.11Examples of Baud Rate Setting ........................................................................197
20.1Features ..............................................................................................................202
20.2Overview .............................................................................................................202
20.3Clock Generation .................................................................................................202
20.4SPI Data Modes and Timing ...............................................................................203
20.5Frame Formats ....................................................................................................204
20.6Data Transfer ......................................................................................................206
20.7AVR USART MSPIM vs. AVR SPI ......................................................................208
ATmega48P/88P/168P
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