ATMEGA323L-4AI Atmel, ATMEGA323L-4AI Datasheet - Page 144

• Manufacturer Part Number: ATMEGA323L-4AI
• Description: IC AVR MCU 32K LV 4MZ IND 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

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

144
ATmega323(L)
Figure 71. Port B Schematic Diagram (Pin PB4)
Figure 72. Port B Schematic Diagram (Pin PB5)
PB4
PB5
WP:
WD:
RL:
RP:
RD:
SPE:
MSTR:
PUD:
PUD:
WP:
WD:
RL:
RP:
RD:
MSTR:
SPE:
MOS
PULL-
UP
MOS
PULL-
UP
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI ENABLE
MASTER SELECT
PULL-UP DISABLE
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI MASTER ENABLE
SPI ENABLE
PULL-UP DISABLE
PUD
PUD
RL
RP
RL
RP
Q
Q
PORTB4
RESET
RESET
Q
Q
DDB4
PORTB5
RESET
RESET
WD
WP
RD
DDB5
C
C
WD
WP
RD
R
C
R
C
D
D
D
D
MSTR
SPE
SPI MASTER
OUT
SPI SLAVE
IN
MSTR
SPE
SPI SS
1457G–AVR–09/03