AT90LS8535-4MI Atmel, AT90LS8535-4MI Datasheet - Page 89

• Manufacturer Part Number: AT90LS8535-4MI
• Description: IC MCU 8K FLASH 4MHZ IND 44-QFN
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS8535-4MI

• 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: 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): 2.7 V ~ 6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Port D Schematics
1041H–11/01
Note that all port pins are synchronized. The synchronization latches are, however, not
shown in the figures.
Figure 61. Port D Schematic Diagram (Pin PD0)
Figure 62. Port D Schematic Diagram (Pin PD1)
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
AT90S/LS8535
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
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