ATMEGA323L-4AI Atmel, ATMEGA323L-4AI Datasheet - Page 65
ATMEGA323L-4AI
Manufacturer Part Number
ATMEGA323L-4AI
Description
IC AVR MCU 32K LV 4MZ IND 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA323L-4PC.pdf
(247 pages)
Specifications of ATMEGA323L-4AI
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA323L4AI
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1457G–AVR–09/03
1. In the same operation, write a logical one to WDTOE and WDE. A logical one
2. Within the next four clock cycles, write a logical 0 to WDE. This disables the
• Bits 2..0 – WDP2, WDP1, WDP0: Watchdog Timer Prescaler 2, 1, and 0
The WDP2, WDP1, and WDP0 bits determine the Watchdog Timer prescaling when the
Watchdog Timer is enabled. The different prescaling values and their corresponding
Timeout Periods are shown in Table 24.
Table 24. Watchdog Timer Prescale Select
WDP2
0
0
0
0
1
1
1
1
must be written to WDE even though it is set to one before the disable operation
starts.
Watchdog.
WDP1
0
0
1
1
0
0
1
1
WDP0
0
1
0
1
0
1
0
1
Oscillator Cycles
Number of WDT
1,024K cycles
2,048K cycles
128K cycles
256K cycles
512K cycles
16K cycles
32K cycles
64K cycles
Typical Time-out
at V
47 ms
94 ms
0.19 s
0.38 s
0.75 s
CC
1.5 s
3.0 s
6.0 s
= 3.0V
ATmega323(L)
Typical Time-out
at V
15 ms
30 ms
60 ms
0.12 s
0.24 s
0.49 s
0.97 s
CC
1.9 s
= 5.0V
65
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