ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 192
![IC AVR MCU 32K 8MHZ COM 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
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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Programming the EEPROM
192
ATmega323(L)
Figure 94. Programming the Flash Waveforms
Figure 95. Programming the Flash Waveforms (continued)
The programming algorithm for the EEPROM Data memory is as follows (refer to “Pro-
gramming the Flash” on page 190 for details on Command, Address and Data loading):
1. A: Load Command “0001 0001”.
2. H: Load Address High Byte ($00 - $03)
3. B: Load Address Low Byte ($00 - $FF)
4. C: Load Data Low Byte ($00 - $FF)
K: Write Data Low Byte
1. Set BS1 to “0”. This selects low data.
2. Give WR a negative pulse. This starts programming of the data byte. RDY/BSY
RDY/BSY
RESET
PAGEL
XTAL1
DATA
goes low.
XA1
XA2
BS1
BS2
WR
OE
RDY/BSY
RESET
PAGEL
XTAL1
DATA
+12V
XA1
XA0
BS1
BS2
WR
OE
+12V
$10
DA TA HIGH
ADDR. LOW
ADDR. HIGH
DATA LOW
1457G–AVR–09/03
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