ATMEGA64M1-AU Atmel, ATMEGA64M1-AU Datasheet - Page 254
ATMEGA64M1-AU
Manufacturer Part Number
ATMEGA64M1-AU
Description
IC MCU AVR 64K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA64M1-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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23. AC – Analog Comparator
23.1
23.2
254
Features
Overview
ATmega16M1/32M1/64M1
•
•
•
•
•
The ATmega16M1/32M1/64M1 features 4 fast analog comparators. The Analog Comparator
compares the input values on the positive pin ACMPx and negative pin ACMPM or ACMPMx.
Each comparator has a dedicated input on the positive input, and the negative input of each
comparator can be configured as:
When the voltage on the positive ACMPn pin is higher than the voltage selected by the ACnM
multiplexer on the negative input, the Analog Comparator output, ACnO, is set.
The comparator is a clocked comparator. A new comparison is done on the falling edge of
CLK
ator Status Register” on page 260.
Each comparator can trigger a separate interrupt, exclusive to the Analog Comparator. In addi-
tion, the user can select Interrupt triggering on comparator output rise, fall or toggle.
The interrupt flags can also be used to synchronize ADC or DAC conversions.
Moreover, the comparator’s output of the comparator 1 can be set to trigger the Timer/Counter1
Input Capture function.
A block diagram of the four comparators and their surrounding logic is shown in
page
• a steady value among the 4 internal reference levels defined by the Vref selected thanks to
• a value generated from the internal DAC
• an external analog input ACMPMx
4 Analog Comparators
High Speed Clocked Comparators
±30mV Hysteresys
4 reference levels
Generation of Configurable Interrupts
the REFS1:0 bits in ADMUX register
I/O
255.
or CLK
I/O
/2. Depending on ACCKDIV fit of ACSR register,
See “ACSR – Analog Compar-
Figure 23-1 on
8209D–AVR–11/10
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