AT90LS2333-4AI Atmel, AT90LS2333-4AI Datasheet - Page 66

• Manufacturer Part Number: AT90LS2333-4AI
• Description: IC MCU 2K 4MHZ A/D LV IT 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS2333-4AI

• 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: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 26. Port D Pins Alternate Functions
Port D Data Register - PORTD
Port D Data Direction Register - DDRD
Port D Input Pins Address - PIND
The Port D Input Pins address - PIND - is not a register, and this address enables access to the physical value on each
Port D pin. When reading PORTD, the Port D Data Latch is read, and when reading PIND, the logical values present on the
pins are read.
Port D As General Digital I/O
PDn, General I/O pin: The DDDn bit in the DDRD register selects the direction of this pin. If DDDn is set (one), PDn is con-
figured as an output pin. If DDDn is cleared (zero), PDn is configured as an input pin. If PDn is set (one) when configured
as an input pin the MOS pull up resistor is activated. To switch the pull up resistor off the PDn has to be cleared (zero) or
the pin has to be configured as an output pin.The port pins are tristated when a reset condition becomes active, even if the
clock is not running.
66
Bit
$12 ($32)
Read/Write
Initial value
Bit
$11 ($31)
Read/Write
Initial value
Bit
$10 ($30)
Read/Write
Initial value
Port Pin
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
AT90S/LS2333 and AT90S/LS4433
PORTD7
PIND7
DDD7
R/W
R/W
Hi-Z
R
7
0
7
0
7
Alternate Function
RXD (UART Input line)
TXD (UART Output line)
INT0 (External interrupt 0 input)
INT1 (External interrupt 1 input)
T0 (Timer/Counter 0 external counter input)
T1 (Timer/Counter 1 external counter input)
AIN0 (Analog comparator positive input)
AIN1 (Analog comparator negative input)
PORTD6
PIND6
DDD6
R/W
R/W
Hi-Z
R
6
0
6
0
6
PORTD5
PIND5
DDD5
R/W
R/W
Hi-Z
R
5
0
5
0
5
PORTD4
PIND4
DDD4
R/W
R/W
Hi-Z
R
4
0
4
0
4
PORTD3
PIND3
DDD3
R/W
R/W
Hi-Z
3
0
3
0
3
R
PORTD2
PIND2
DDD2
R/W
R/W
Hi-Z
R
2
0
2
0
2
PORTD1
PIND1
DDD1
R/W
R/W
Hi-Z
R
1
0
1
0
1
PORTD0
PIND0
DDD0
R/W
R/W
Hi-Z
0
0
0
0
0
R
PORTD
DDRD
PIND