Datasheet

3. Overview
The Atmel ATmega16M1/32M1/64M1 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
ATmega16M1/32M1/64M1 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.
Flas h program
me mory
Ins truction
regis te r
Ins truction
de coder
Program
counte r
Control line s
32 x 8
ge ne ra l
purpos e
regis tre rs
ALU
Sta tus
and control
I/O lines
EEP ROM
Data bus 8-bit
Data
SRAM
Direct addre s s ing
Indire ct a ddre ssing
Inte rrupt
unit
SP I
unit
Watchdog
timer
Four a na log
compa ra tors
DAC
ADC
MPS C
Timer 1
Timer 0
HW LIN/UART
CAN
Curre nt s ource
The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32
registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to
be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code
efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.
The Atmel ATmega16M1/32M1/64M1 provides the following features: 16/32/64Kbytes of In-System
Programmable Flash with Read-While-Write capabilities, 512B/1K/2Kbytes EEPROM, 1/2/4Kbytes
SRAM, 27 general purpose I/O lines, 32 general purpose working registers, one Motor Power Stage
Controller, two flexible Timer/Counters with compare modes and PWM, one UART with HW LIN, an 11-
channel 10-bit ADC with two differential input stages with programmable gain, a 10-bit DAC, a
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Complete-10/2016
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