T80C5112 查看數據表（PDF） - Atmel Corporation

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T80C5112

8-bit Microcontroller with A/D converter

Atmel Corporation 

T80C5112

PIN

NUMBER

TYPE

MNEMONIC LQFP PLCC

NAME AND FUNCTION

VSS

VCC

AVSS

AVCC

VREF

VPP

P1.0-P1.7

P3.0-P3.7

P4.0-P4.7

48

52

X

X

I Ground: 0V reference.

X

X

I

Power Supply: This is the power supply voltage for normal, idle and power-

down operation.

X

I Analog Ground: 0V reference.

I

Analog Power Supply: This is the power supply voltage for normal and idle

operation of the A/D

X

X

I VREF : A/D converter positive reference input.

X

X

Vpp : Programming Supply Voltage:

I This pin also receives the 12V programming pulse which will start the EPROM

programming and the manufacturer test modes.

X

X

I/O Port 1: Port 1 is an 8-bit bidirectional I/O port with internal pull-ups. Port 1 pins

that have 1s written to them are pulled high by the internal pull-ups and can be

used as inputs.

Alternate functions for Port 1 include:

I/O WR (P1.0): External data memory write strobe

I/O RD (P1.1): External data memory readstrobe

I/O ECI (P1.2): External Clock for the PCA

I/O CEX0 (P1.3): Capture/Compare External I/O for PCA module 0

I/O CEX1 (P1.4): Capture/Compare External I/O for PCA module 1

I/O CEX2 (P1.5): Capture/Compare External I/O for PCA module 2

I/O CEX3 (P1.6): Capture/Compare External I/O for PCA module 3

I/O CEX4 (P1.7): Capture/Compare External I/O for PCA module 4

X

X

I/O Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins

that have 1s written to them are pulled high by the internal pull-ups and can be

used as inputs.

P3.4 and P3.5 are valid I/O pins only when the T80C5112 is using the internal

RC oscillator, OSCB.

P3.6 is an input only pin

Port 3 also serves the special features of the 80C51 family, as listed below.

I/O RXD (P3.0): Serial input port

I/O TXD (P3.1): Serial output port

I/O INT0 (P3.2): External interrupt 0

I/O T0 (P3.3): Timer 0 external input

I/O

XTAL1 (P3.4): Input to the inverting oscillator amplifier and input to the internal

clock generator circuits, selected by hardware set upa

I/O

XTAL2 (P3.5): Output from the inverting oscillator amplifier, selected by

hardware set up

Port 4: Port 4 is an 8-bit bidirectional I/O port. Each bit can be set as pure

X

X

I/O

CMOS input or as push-pull output.

Port 4 is also the input port of the Analog to digital converter and used for

oscillator and reset.

I/O AIN0 (P4.0): A/D converter input 0

I/O

AIN1 (P4.1): A/D converter input 1

T1: Timer 1 external input

I/O

AIN2 (P4.2): A/D converter input 2

SS: Slave select input of the SPI controller

Rev. B - November 10, 2000

5

Preliminary

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