ATMEGA48PB_14 Datasheet, PDF (5/23 Pages) ATMEL Corporation – Atmel AVR 8-bit Microcontroller with 4/8/16KBytes

3. Overview
The ATmega48PB/88PB/168PB is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the ATmega48PB/88PB/168PB achieves
throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus
processing speed.
3.1 Block Diagram
Figure 3-1. Block Diagram
Watchdog
Timer
Watchdog
Oscillator
Oscillator
Circuits /
Clock
Generation
EEPROM
Power
Supervision
POR / BOD &
RESET
Flash
debugWIRE
PROGRAM
LOGIC
SRAM
CPU
8bit T/C 0
8bit T/C 2
USART 0
16bit T/C 1
Analog
Comp.
SPI
A/D Conv.
Internal
6
Bandgap
TWI
PORT E
2
AVCC
AREF
GND
PE[0..3]
PORT D (8)
PD[0..7]
PORT B (8)
PB[0..7]
PORT C (7)
PC[0..6]
ADC[6..7]
RESET
XTAL[1..2]
ATmega48PB/88PB/168PB [PRELIMINARY DATASHEET]
5
Atmel-42176AS–AVR-ATmega48PB-88PB-168PB_Datasheet_11/2014