ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 189
![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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1457G–AVR–09/03
Figure 93. Parallel Programming
Table 64. Pin Name Mapping
Table 65. XA1 and XA0 Coding
Programming Mode
XA1
Signal Name in
0
0
1
1
RDY/BSY
PAGEL
DATA
BS1
XA0
XA1
BS2
WR
OE
XA0
0
1
0
1
RDY/BSY
PAGEL
Action When XTAL1 is Pulsed
Load Flash or EEPROM Address (High or Low Address Byte
Determined by BS1)
Load Data (High or Low Data Byte for Flash Determined by BS1)
Load Command
No Action, Idle
+12 V
PB7 - 0
Name
BS1
XA0
XA1
BS2
WR
PD1
PD2
PD3
PD4
PD5
PD6
PD7
OE
PA0
Pin
I/O
I/O
O
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
PA0
I
I
I
I
I
I
I
ATmega323
Function
0: Device is Busy Programming, 1: Device is
Ready for New Command
Output Enable (Active Low)
Write Pulse (Active Low)
Byte Select 1 (
High Byte)
XTAL Action Bit 0
XTAL Action Bit 1
Program Memory Page Load
Byte Select 2 (
nd High Byte)
Bidirectional Data Bus (Output When OE is Low)
PB7 - PB0
VCC
“0”
“0”
+5V
Selects Low Byte,
Selects Low Byte,
ATmega323(L)
DATA
“1”
“1”
Selects 2
Selects
189
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