W77E532A40PL 查看數據表（PDF） - Winbond

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W77E532A40PL

8-BIT MICROCONTROLLER

Winbond 

W77E532/W77E532A

Pin Description, continued

SYMBOL

TYPE

DESCRIPTIONS

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

P3.0 − P3.7 I/O 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

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

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

P4.0 − P4.3 I/O alternate function WAIT which is the wait state control signal. The P4.3 also

provides the alternate function REBOOT which is H/W reboot from LD flash.

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

Publication Release Date: November 19, 2007

-5-

Revision A9

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