ATTINY2313A-MUR Atmel, ATTINY2313A-MUR Datasheet - Page 39
ATTINY2313A-MUR
Manufacturer Part Number
ATTINY2313A-MUR
Description
MCU AVR 2K FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY2313A-MU.pdf
(270 pages)
Specifications of ATTINY2313A-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
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Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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8.2
8.2.1
8246A–AVR–11/09
Reset Sources
Power-on Reset
The ATtiny2313A/4313 has four sources of reset:
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
V
Figure 8-2.
Figure 8-3.
CC
CC
• Power-on Reset. The MCU is reset when the supply voltage is below the Power-on Reset
• External Reset. The MCU is reset when a low level is present on the RESET pin for longer
• Watchdog Reset. The MCU is reset when the Watchdog Timer period expires and the
• Brown-out Reset. The MCU is reset when the supply voltage V
threshold (V
than the minimum pulse length when RESET function is enabled
Watchdog is enabled
Reset threshold (V
is below the detection level. The POR circuit can be used to trigger the Start-up Reset, as
decreases below the detection level.
INTERNAL
INTERNAL
TIME-OUT
TIME-OUT
RESET
RESET
RESET
RESET
V
V
CC
CC
“System and Reset Characteristics” on page
MCU Start-up, RESET Tied to V
MCU Start-up, RESET Extended Externally
POT
)
BOT
) and the Brown-out Detector is enabled
V
V
V
CC
POT
POT
RST
rise. The reset signal is activated again, without any delay, when
t
TOUT
CC
V
RST
t
TOUT
198. The POR is activated whenever
CC
is below the Brown-out
39
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