ATMEGA64A-MN Atmel, ATMEGA64A-MN Datasheet - Page 52
ATMEGA64A-MN
Manufacturer Part Number
ATMEGA64A-MN
Description
IC MCU AVR 64K FLASH 8QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA64A-AU.pdf
(392 pages)
Specifications of ATMEGA64A-MN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
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 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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10.0.3
8160C–AVR–07/09
Power-on Reset
Figure 10-1. Reset Logic
A Power-on Reset (POR) pulse is generated by an On-chip Detection circuit. The detection level
is defined in
POR circuit can be used to trigger the Start-up Reset, as well as to detect a failure in supply
voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
when V
BODLEVEL
CC
RESET
BODEN
PEN
decreases below the detection level.
Table
Pull-up Resistor
28-3. The POR is activated whenever V
Pull-up Resistor
Power-On Reset
JTAG Reset
Register
FILTER
SPIKE
D
L
Circuit
Q
Q
CC
rise. The RESET signal is activated again, without any delay,
CKSEL[3:0]
SUT[1:0]
Watchdog
Watchdog
Oscillator
Generator
Timer
Clock
Reset Circuit
Reset Circuit
Brown-Out
CK
MCU Control and Status
Register (MCUCSR)
DATA BUS
Delay Counters
CC
is below the detection level. The
ATmega64A
TIMEOUT
52
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