Rainbow-electronics AT89C5122 Manual de usuario descargar pdf (Pagina 5)

AT8xC5122/23

4202E–SCR–06/06

AT8xC5122 Block Diagram

AT83C5123 Block Diagram

DC/DC

Converter

CVCC

CVSS

UART

Interface

TxD

RxD

16-BIT

TIMERS

T[0-1]

Interrupt

Controller

INT[0-1]

Alternate

Card

CRST1

CCLK1

CIO1

3.3 V

Regulator

VCC

VSS

WATCH-DOG

POR

PFD

RESET

RST

PLLPLLF

XTAL 1

XTAL 2

8 MHz

Oscillator

256 x 8

RAM

512 x 8

XRAM

80C51 8-BIT CORE

256 x 8

RAM

INTERNAL ADDRESS AND DATA BUS

32K x 8

ROM (1)

32K x 8

E2PROM (1)

32K x 8

CRAM (1)

External Mem ory

Controller

PSEN

ALE

A[8-15]

AD[0-7]

D+

D-

VREF

USB

Interface

ISO 7816

Interface

CCLK

CRST

CPRES

CC8

CC4

CIO

3.3V

Regulator

AVSS

AVCC

DVCC

Note 1 : the implementation of these features depends on product v ersions

512 x 8

E2PROM (1)

Parallel I/O Ports

P0[0-7]

8-BIT

PORT

8-BIT

PORT

P2[0-7]

8-BIT

PORT

P3[0-7]

6-BIT

PORT

P4[0-5]

8-BIT

PORT

P5[0-7]

LED's

LED[0-6]

3-BIT

PORT

P1[2,6-7]

SPI

Interface

MISO

MOSI

SCK

KBD

Interface

KB[0-7]

DC/DC

Converter

CVCC

CVSS

UART

Interface

TxD

RxD

16-BIT

TIMER S

T[0-1]

Interrupt

Controller

INT[0-1]

Alternate

Card

CRST1

CCLK1

CIO1

3.3 V

Regulator

VCC

VSS

WATCH-DOG

POR

PFD

RESET

RST

PLLPLLF

XTAL1

XTAL2

8 MHz

Oscillator

256 x 8

RAM

512 x 8

XR A M

80C51 8-BIT CORE

256 x 8

RAM

INTERNAL ADDRESS AND DATA BUS

30K x 8

ROM

512 x 8

E2PROM (1)

Parallel I/O Ports

8-BIT

PORT

P3[0-7]

D+

D-

VREF

USB

Interface

IS O 7816

Interface

CCLK

CRST

CPRES

CC8

CC4

CIO

3.3V

Regulator

AVSS

AVCC

DVCC

Note 1 : the implementation of these features depends on product v ersions

1-BIT

PORT

P5.0

LED's

LED[0-3]

3-BIT

PORT

P1[2,6-7]

1 2 3 4 5 6 7 8 9 10 ... 212 213

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Rainbow-electronics AT89C5122 Manual de usuario Pagina 5

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