AT89LP4052-20PI datasheet(3/90 Pages) ATMEL

3 / 90 page

3547F–MICRO–6/06

AT89LP2052/LP4052

Pin Description

Symbol

Type

Description

1RST

RST: External Active-High Reset input.

VPP: Parallel Programming Voltage. Raise to 12V to enable programming.

2P3.0

I/O

P3.0: User-configurable I/O Port 3 bit 0.

RXD: Serial Port Receiver input.

3P3.1

I/O

P3.1: User-configurable I/O Port 3 bit 1.

TXD: Serial Port Transmitter output.

4XTAL2

XTAL2: Output from inverting oscillator amplifier.

5XTAL1

XTAL1: Input to the inverting oscillator amplifier and internal clock generation circuits.

6P3.2

I/O

P3.2: User-configurable I/O Port 3 bit 2.

INT0: External Interrupt 0 input.

7P3.3

I/O

P3.3: User-configurable I/O Port 3 bit 3.

INT1: External Interrupt 1input.

8P3.4

I/O

P3.4: User-configurable I/O Port 3 bit 4.

T0: Timer 0 Counter input or PWM output

9P3.5

I/O

P3.5: User-configurable I/O Port 3 bit 5.

T1: Timer 1 Counter input or PWM output

GND

Ground

P3.7

I/O

P3.7: User-configurable I/O Port 3 bit 7.

SYSCLK: System Clock Output when System Clock Fuse is enabled.

P1.0

I/O

P1.0: User-configurable I/O Port 1 bit 0.

AIN0: Analog Comparator Positive input.

P1.1

I/O

P1.1: User-configurable I/O Port 1 bit 1.

AIN1: Analog Comparator Negative input.

P1.2

I/O

P1.2: User-configurable I/O Port 1 bit 2.

P1.3

I/O

P1.3: User-configurable I/O Port 1 bit 3

P1.4

I/O

P1.4: User-configurable I/O Port 1 bit 4.

SS: SPI slave select.

P1.5

I/O

P1.5: User-configurable I/O Port 1 bit 5.

MOSI: SPI master-out/slave-in. When configured as master, this pin is an output. When configured as

slave, this pin is an input.

P1.6

I/O

P1.6: User-configurable I/O Port 1 bit 6.

MISO: SPI master-in/slave-out. When configured as master, this pin is an input. When configured

as slave, this pin is an output.

P1.7

I/O

P1.7: User-configurable I/O Port 1 bit 7.

SCK: SPI Clock. When configured as master, this pin is an output. When configured as slave, this pin is

an input.

VCC

Supply Voltage

AT89LP4052-20PI 数据表(PDF) 3 Page - ATMEL Corporation

AT89LP4052-20PI 数据表(HTML) 3 Page - ATMEL Corporation

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