W78354P Просмотр технического описания (PDF) - Winbond

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W78354P

MONITOR MICROCONTROLLER

Winbond 

W78C354

P2nSF

Read

Latch

Int.Bus

Write to

Latch

Read

Pin

SDACn+6

D

Q

0

CL

Q

1

Vcc

Internal

Pullup

P2.n/SDACn+6

Figure 3-2. P2.4 to P2.7 architecture (where n = 4−7)

E-3 Port 3

The architecture of Port 3 is similar to that of P2.0. There are no special function control bits for these

bits; the output latch of the bits must be set to high to enable the special functions.

PINS

SPECIAL

FUNCTION

DESCRIPTION

P3.0

SPID/RXD

If serial port is in mode 0, the pin works as the data line of the SPI

port.

If serial port is in mode 1, 2, or 3, the pin works as the RXD of the

80C32 standard.

P3.1

SPIC/TXD

If serial port is in mode 0, the pin works as the clock line of the SPI

port.

If serial port is in mode 1, 2, or 3, the pin works as the TXD of the

80C32 standard.

P3.2

INT0

External Interrupt input

P3.3

-

P3.4

T0

Counter/Timer 0 input

P3.5

T1

Counter/Timer 1 input

P3.6

-

P3.7

-

- 17 -

Publication Release Date: October 1996

Revision A1

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