ATTINY2313-20PI Atmel, ATTINY2313-20PI Datasheet - Page 37
ATTINY2313-20PI
Manufacturer Part Number
ATTINY2313-20PI
Description
IC MCU AVR 2K FLASH 20DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY2313-20PI
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
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)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
ATTINY2313-24PI
ATTINY2313-24PI
ATTINY2313-24PI
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY2313-20PI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Watchdog Reset
MCU Status Register –
MCUSR
2543L–AVR–08/10
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 44
Figure 19. Watchdog Reset During Operation
The MCU Status Register provides information on which reset source caused an MCU reset.
• Bit 3 – WDRF: Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
• Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a Brown-out Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
• Bit 1 – EXTRF: External Reset Flag
This bit is set if an External Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
• Bit 0 – PORF: Power-on Reset Flag
This bit is set if a Power-on Reset occurs. The bit is reset only by writing a logic zero to the flag.
To make use of the Reset flags to identify a reset condition, the user should read and then reset
the MCUSR as early as possible in the program. If the register is cleared before another reset
occurs, the source of the reset can be found by examining the reset flags.
Bit
Read/Write
Initial Value
for details on operation of the Watchdog Timer.
CC
R
7
–
0
R
6
–
0
R
5
–
0
CK
R
4
–
WDRF
R/W
3
See Bit Description
BORF
R/W
2
EXTRF
R/W
1
PORF
R/W
0
MCUSR
TOUT
. Refer to
37
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