W77E58 Просмотр технического описания (PDF) - Winbond

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W77E58

8 BIT MICROCONTROLLER

Winbond 

Preliminary W77E58

Pin Description, continued

SYMBOL TYPE

DESCRIPTIONS

P3.0−P3.7 I/O PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have

alternate functions, which are described below:

RXD(P3.0) : Serial Port 0 input

TXD(P3.1) : Serial Port 0 output

INT0 (P3.2) : External Interrupt 0

INT1 (P3.3) : External Interrupt 1

T0(P3.4) : Timer 0 External Input

T1(P3.5) : Timer 1 External Input

WR (P3.6) : External Data Memory Write Strobe

P4.0−P4.3

RD (P3.7) : External Data Memory Read Strobe

I/O PORT 4: Port 4 is a 4-bit bi-directional I/O port. The P4.0 also provides the

alternate function WAIT which is the wait state control signal.

* Note: TYPE I: input, O: output, I/O: bi-directional.

Publication Release Date: March 1999

-5-

Revision A1

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