ATMEGA16A-MUR Atmel, ATMEGA16A-MUR Datasheet - Page 38
ATMEGA16A-MUR
Manufacturer Part Number
ATMEGA16A-MUR
Description
MCU AVR 16KB FLASH 16MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16A-MU.pdf
(352 pages)
Specifications of ATMEGA16A-MUR
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
32
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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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10.1.2
38
ATmega16A
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
V
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
Figure 10-2. MCU Start-up, RESET Tied to V
CC
is below the detection level. The POR circuit can be used to trigger the Start-up Reset, as
CC
INTERNAL
TIME-OUT
decreases below the detection level.
RESET
RESET
V
“System and Reset Characteristics” on page
CC
BODLEVEL
BODEN
JTAG Reset
Pull-up Resistor
Register
FILTER
SPIKE
V
V
POT
RST
CC
t
rise. The RESET signal is activated again, without any delay,
CKSEL[3:0]
TOUT
Reset Circuit
Reset Circuit
SUT[1:0]
Reset Circuit
Brown-out
Watchdog
Watchdog
Oscillator
Generator
Power-on
Timer
Clock
CK
MCU Control and Status
Register (MCUCSR)
CC
DATA BUS
.
Delay Counters
296. The POR is activated whenever
TIMEOUT
8154B–AVR–07/09
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