AT90LS2333-4PI Atmel, AT90LS2333-4PI Datasheet - Page 68

• Manufacturer Part Number: AT90LS2333-4PI
• Description: IC MCU 2K 4MHZ A/D LV IT 28DIP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS2333-4PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Port D Schematics
Note that all port pins are synchronized. The synchronization latches are however, not shown in the figures.
Figure 57. Port D Schematic Diagram (Pin PD0)
Figure 58. Port D Schematic Diagram (Pin PD1)
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AT90S/LS2333 and AT90S/LS4433
PD0
PD1
WP:
WD:
RL:
RP:
RD:
RXD:
RXEN:
WP:
WD:
RL:
RP:
RD:
TXD:
TXEN:
MOS
PULL-
UP
MOS
PULL-
UP
WRITE PORTD
WRITE DDRD
READ PORTD LATCH
READ PORTD PIN
READ DDRD
UART RECEIVE DATA
UART RECEIVE ENABLE
WRITE PORTD
WRITE DDRD
READ PORTD LATCH
READ PORTD PIN
READ DDRD
UART TRANSMIT DATA
UART TRANSMIT ENABLE
RP
RL
RL
RP
Q
Q
Q
Q
PORTD0
PORTD1
RESET
RESET
RESET
RESET
DDD0
DDD1
WD
WP
WD
WP
RD
RD
C
C
R
C
R
C
D
D
D
D
RXEN
RXD
TXEN
TXD