ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 27
ATMEGA323-8AC
Manufacturer Part Number
ATMEGA323-8AC
Description
IC AVR MCU 32K 8MHZ COM 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA323L-4PC.pdf
(247 pages)
Specifications of ATMEGA323-8AC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA3238AC
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1457G–AVR–09/03
Table 6. Reset Delay Selections
Notes:
CKSEL
0010
0000
0001
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
(6)
1. On Power-up, the start-up time is increased with Typ 0.6 ms.
2. “1” means unprogrammed, “0” means programmed.
3. For possible clock selections, see “Clock Options” on page 6.
4. When BODEN is programmed, add 100 µs.
5. When BODEN is programmed, add 25 µs.
6. Default value.
(2)
Start-up Time, V
2.7V, BODLEVEL
30 µs + 16K CK
4.2 ms + 16K CK
Unprogrammed
67 ms + 32K CK
67 ms + 16K CK
30 µs + 1K CK
4.2 ms + 1K CK
30 µs + 6 CK
30 µs + 6 CK
30 µs + 6 CK
67 ms + 1K CK
4.2 ms + 6 CK
4.2 ms + 6 CK
4.2 ms + 6 CK
67 ms + 6 CK
67 ms + 6 CK
67 ms 1K CK
(4)
(4)
(4)
(4)
CC
(4)
(1)
=
Start-up Time, V
4.0V, BODLEVEL
10 µs + 16K CK
5.8 ms + 16K CK
92 ms + 32K CK
92 ms + 16K CK
10 µs + 1K CK
5.8 ms + 1K CK
10 µs + 6 CK
10 µs + 6 CK
10 µs + 6 CK
92 ms + 1K CK
92 ms + 1K CK
5.8 ms + 6 CK
5.8 ms + 6 CK
5.8 ms + 6 CK
Programmed
92 ms + 6 CK
92 ms + 6 CK
(5)
(5)
(5)
(5)
CC
(5)
=
ATmega323(L)
Recommended Usage
Ext. Clock, Fast Rising
Power
Ext. Clock, BOD Enabled
Int. RC Oscillator, Slowly
Rising Power
Int. RC Oscillator, Fast
Rising Power
Int. RC Oscillator, BOD
Enabled
Ext. RC Oscillator, Slowly
Rising Power
Ext. RC Oscillator, Fast
Rising Power
Ext. RC Oscillator, BOD
Enabled
Ext. Low-frequency
Crystal
Ext. Low-frequency
Crystal
Crystal Oscillator, Slowly
Rising Power
Crystal Oscillator, Fast
Rising Power
Crystal Oscillator, BOD
Enabled
Ceramic Resonator/Ext.
Clock, Slowly Rising
Power
Ceramic Resonator, Fast
Rising Power
Ceramic Resonator, BOD
Enabled
(3)
27
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