AT90S8515-8PC Atmel, AT90S8515-8PC Datasheet - Page 74

• Manufacturer Part Number: AT90S8515-8PC
• Description: IC MCU 8K FLSH 8MHZ 40DIP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S8515-8PC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Port D Schematics
74
AT90S8515
• INT1 – Port D, Bit 3
INT1: External Interrupt source 1. The PD3 pin can serve as an external interrupt source
to the MCU. See the interrupt description for further details and how to enable the
source.
• INT0 – Port D, Bit 2
INT0: External Interrupt source 0. The PD2 pin can serve as an external interrupt source
to the MCU. See the interrupt description for further details and how to enable the
source.
• TXD – Port D, Bit 1
Transmit Data (data output pin for the UART). When the UART transmitter is enabled,
this pin is configured as an output, regardless of the value of DDRD1.
• RXD – Port D, Bit 0
Receive Data (data input pin for the UART). When the UART receiver is enabled, this
pin is configured as an input, regardless of the value of DDRD0. When the UART forces
this pin to be an input, a logical “1” in PORTD0 will turn on the internal pull-up.
Note that all port pins are synchronized. The synchronization latches are, however, not
shown in the figures.
Figure 53. Port D Schematic Diagram (Pin PD0)
PD0
WP:
WD:
RL:
RP:
RD:
RXD:
RXEN:
MOS
PULL-
UP
WRITE PORTD
WRITE DDRD
READ PORTD LATCH
READ PORTD PIN
READ DDRD
UART RECEIVE DATA
UART RECEIVE ENABLE
RL
RP
Q
Q
PORTD0
RESET
RESET
DDD0
WD
WP
RD
C
C
D
D
RXEN
RXD
0841G–09/01