UPD78C11AGF(A)-XXX-3BE Просмотр технического описания (PDF) - NEC => Renesas Technology

Номер в каталоге

Компоненты Описание

Список матч

UPD78C11AGF(A)-XXX-3BE

8-BIT SINGLE-CHIP MICROCOMPUTER (WITH A/D CONVERTER)

NEC => Renesas Technology 

µPD78C10A(A), 78C11A(A), 78C12A(A)

1. PIN FUNCTIONS

1.1 Pin Function List

Pin name

I/O

Function

PA7-0

I/O

Port A is an 8-bit I/O port for which the input or output mode can be specified bit-wise.

(Port A)

PB7-0

I/O

Port B is an 8-bit I/O port for which the input or output mode can be specified bit-wise.

(Port B)

PC0/TxD

I/O or O

Port C

Transmit Data

When used as port C, it is an 8-bit I/O port for When used for transmit data output, it is a

which the input or output mode can be speci- serial data output pin.

PC1/RxD

I/O or I fied bit-wise.

Receive Data

When used for receive data input, it is a

serial data input pin.

PC2/SCK

I/O or I/O

Serial Clock

When used for serial clock I/O, it is an

output pin for the internal clock or an input

pin for an external clock.

PC3/INT2/TI I/O or I or I

Interrupt Request/Timer Input

When used for interrupt request or timer

input, it is a falling-edge triggered maskable

interrupt input pin, or a timer input pin for

external clock input, or an AC-input, zero-

cross detection pin.

PC4/TO

I/O or O

Timer Output

When used for timer output, it outputs a

square wave having a count time of one-

half cycle per internal clock cycle.

PC5/CI

I/O or I

Counter Input

When used for counter input, it is an input

pin for external pulses to the timer/event

counter.

PC6/CO0

I/O or O

Counter Output0, 1

PC7/CO1

When used for counter outputs 0 and 1,

these pins output a programmable square

wave from the timer/event counter.

PD7-0/AD7-0

I/O or I/O Port D

Address/Data Bus

When used as Port D, it is an 8-bit I/O port for When using external memory, it acts as a

which the input or output mode can be speci- multiplexed address/data bus.

fied byte-wise (µPD78C11A(A)).

PF7-0/AB15-8

I/O or O

Port F

Address Bus

When used as Port F, it is an 8-bit I/O port for When using external memory, it acts as an

which the input or output mode can be speci- address bus.

fied bit-wise.

WR

O

This is a strobe signal that is output for external memory write operations. It goes high

(Write Strobe)

except during the external memory’s data write cycle. Output has high impedance when

the RESET signal is low or during hardware STOP mode.

RD

O

This is a strobe signal that is output for external memory read operations. It goes high

(Read Strobe)

except during the external memory’s data read cycle. Output has high impedance when

the RESET signal is low or during hardware STOP mode.

ALE

O

A strobe signal is used to externally latch the low-order address data output to PD0 to

(Address Latch

PD7 for external memory access. Output has high impedance when the RESET signal

Enable)

is low or during hardware STOP mode.

8

Share Link: