AT89LP213 datasheet(4/90 Pages) ATMEL

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3538A–MICRO–7/06

AT89LP213/214 [Preliminary]

Table 3-2.

AT89LP214 Pin Description

Symbol

Type

Description

1P1.5

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.

GPI5: General-purpose Interrupt input 5.

2P1.7

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.

GPI7: General-purpose Interrupt input 7.

3P1.3

I/O

P1.3: User-configurable I/O Port 1 bit 3 (if Reset Fuse is disabled).

RST: External Active-Low Reset input (if Reset Fuse is enabled. See “External Reset” on page 15).

GPI3: General-purpose Interrupt input 3.

DCL: Serial Clock input for On-chip Debug Interface.

4GND

Ground

5P1.2

I/O

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

GPI2: General-purpose Interrupt input 2.

6P3.0

I/O

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

RXD: Serial Port Receiver input.

7P3.2

I/O

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

XTAL1: Input to the inverting oscillator amplifier and internal clock generation circuits. It may be used as

a port pin if the internal RC oscillator is selected as the clock source.

DDA: Serial Data input/output for On-chip Debug Interface when OCD is enabled and the internal RC

oscillator is selected as the clock source.

8P3.3

I/O

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

XTAL2: Output from inverting oscillator amplifier. It may be used as a port pin if the internal

RC oscillator is selected as the clock source.

CLKOUT: When the internal RC oscillator is selected as the clock source, may be used to output the

internal clock divided by 2.

DDA: Serial Data input/output for On-chip Debug Interface when OCD is enabled and the external clock

is selected as the clock source.\

9P3.1

I/O

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

TXD: Serial Port Transmitter output.

VDD

Supply Voltage

P1.0

I/O

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

AIN0: Analog Comparator Positive input.

GPI0: General-purpose Interrupt input 0.

P1.1

I/O

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

AIN1: Analog Comparator Negative input.

GPI1: General-purpose Interrupt input 1

P1.4

I/O

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

SS: SPI slave select input.

GPI4: General-purpose Interrupt input 4.

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.

GPI6: General-purpose Interrupt input 6.

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