W77E58 Просмотр технического описания (PDF) - Winbond

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Компоненты Описание

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W77E58

8 BIT MICROCONTROLLER

Winbond 

Preliminary W77E58

SERIAL DATA BUFFER

Bit:

7

6

5

4

3

2

1

0

SBUF.7 SBUF.6 SBUF.5 SBUF.4 SBUF.3 SBUF.2 SBUF.1 SBUF.0

Mnemonic: SBUF

Address: 99h

SBUF.7-0: Serial data on the serial port 0 is read from or written to this location. It actually consists of

two separate internal 8-bit registers. One is the receive resister, and the other is the

transmit buffer. Any read access gets data from the receive data buffer, while write access

is to the transmit data buffer.

PORT 2

Bit:

7

6

5

4

3

2

1

0

P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0

Mnemonic: P2

Address: A0h

P2.7-0: Port 2 is a bi-directional I/O port with internal pull-ups. This port also provides the upper

address bits for accesses to external memory.

PORT 4

Bit:

7

6

5

4

3

2

1

0

-

-

-

-

P4.3 P4.2 P4.1 P4.0

Mnemonic: P4

Address: A5h

P4.3-0: Port 4 is a bi-directional I/O port with internal pull-ups.

INTERRUPT ENABLE

Bit:

7

6

5

4

3

2

1

0

EA

ES1 ET2

ES

ET1 EX1 ET0 EX0

Mnemonic: IE

Address: A8h

EA:

ES1:

ET2:

ES:

ET1:

EX1:

ET0:

EX0:

Global enable. Enable/disable all interrupts except for PFI.

Enable Serial Port 1 interrupt.

Enable Timer 2 interrupt.

Enable Serial Port 0 interrupt.

Enable Timer 1 interrupt

Enable external interrupt 1

Enable Timer 0 interrupt

Enable external interrupt 0

- 19 -

Publication Release Date: March 1999

Revision A1

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