ATMEGA168P-20MQ Atmel, ATMEGA168P-20MQ Datasheet - Page 417
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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
21 2-wire Serial Interface .......................................................................... 212
22 Analog Comparator ............................................................................. 244
23 Analog-to-Digital Converter ................................................................ 248
24 debugWIRE On-chip Debug System .................................................. 265
25 Self-Programming the Flash, ATmega48P ........................................ 267
20.8Register Description ............................................................................................209
21.1Features ..............................................................................................................212
21.22-wire Serial Interface Bus Definition ..................................................................212
21.3Data Transfer and Frame Format ........................................................................214
21.4Multi-master Bus Systems, Arbitration and Synchronization ...............................216
21.5Overview of the TWI Module ...............................................................................219
21.6Using the TWI ......................................................................................................221
21.7Transmission Modes ...........................................................................................225
21.8Multi-master Systems and Arbitration ..................................................................238
21.9Register Description ............................................................................................239
22.1Overview .............................................................................................................244
22.2Analog Comparator Multiplexed Input .................................................................244
22.3Register Description ............................................................................................245
23.1Features ..............................................................................................................248
23.2Overview .............................................................................................................248
23.3Starting a Conversion ..........................................................................................250
23.4Prescaling and Conversion Timing ......................................................................251
23.5Changing Channel or Reference Selection .........................................................253
23.6ADC Noise Canceler ...........................................................................................254
23.7ADC Conversion Result ......................................................................................259
23.8Temperature Measurement .................................................................................259
23.9Register Description ............................................................................................260
24.1Features ..............................................................................................................265
24.2Overview .............................................................................................................265
24.3Physical Interface ................................................................................................265
24.4Software Break Points .........................................................................................266
24.5Limitations of debugWIRE ...................................................................................266
24.6Register Description ............................................................................................266
25.1Overview .............................................................................................................267
ATmega48P/88P/168P
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