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Block diagram – Rainbow Electronics AT89C5132 User Manual

Page 2

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AT8xC5132

4173A–8051–08/02

Block Diagram

Figure 1. AT8xC5132 Block Diagram

Notes:

1. Alternate function of Port 3
2. Alternate function of Port 4

8-BIT INTERNAL BUS

Clock and PLL

Unit

C51 (X2 CORE)

RAM

2304 Bytes

Flash

ROM

Interrupt

Handler Unit

FILT

X2

X1

MMC

Interface

I/O

MDAT

P0 - P5

10-bit A-to-D

Converter

V

SS

V

DD

Keyboard

Interface

KIN3:0

I

2

S/PCM

Audio Interface

AVSS

A

V

DD

AIN1:0

Ports

INT0

INT1

MOSI

MISO

Timers 0/1

T1

T0

SPI/DataFlash

Controller

MCLK

MCMD

SCK

RST

AREF

DSEL

DCLK

SCLK

DOUT

64K Bytes

USB

Controller

D+

D-

UART

RXD

TXD

IDE

Interface

SS

Watchdog

Flash Boot

4K Bytes

UVSS

U

V

DD

and

BRG

1

1

1

1

1

1

2

2

2

2

1

or

10-bit ADC