AT90LS4433-4PC Atmel, AT90LS4433-4PC Datasheet - Page 75

• Manufacturer Part Number: AT90LS4433-4PC
• Description: IC MCU 4K FLSH 4MHZ A/D LV 28DIP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS4433-4PC

• 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: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1042H–AVR–04/03
Figure 51. Port B Schematic Diagram (Pin PB1)
Figure 52. Port B Schematic Diagram (Pin PB2)
PB2
PB1
WP:
WD:
RL:
RP:
RD:
MSTR:
SPE:
MOS
PULL-
UP
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI MASTER ENABLE
SPI ENABLE
WP:
WD:
RL:
RP:
RD:
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
RL
RP
Q
Q
AT90S/LS4433
PORTB2
RESET
RESET
DDB2
PORTB1
WD
WP
RD
C
C
DDB1
D
D
MSTR
SPE
SPI SS
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