M66011FP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M66011FP

SERIAL BUS CONTROLLER

MITSUBISHI ELECTRIC  

MITSUBISHI 〈DIGITAL ASSP〉

M66011FP

SERIAL BUS CONTROLLER

FUNCTION

M66011 integrated circuit is a serial bus controller. It is

equipped with two 8-bit shift registers used to convert parallel

input data into serial for output, as well as with one 9-bit shift

register used to convert serial input data into parallel for out-

put.

This IC receives and sends 8-bit parallel in communication

with microcomputer. In communication with serial bus, it out-

puts 16-bit data and receives 9-bit data.

Serial data input/output uses four signal lines: shift clock out-

put SCLK, serial data output SOUT, serial data input SIN and

output enable output OE.

Serial data is output synchronously with shift clock fall edges,

while input of serial data is synchronous with shift clock rise

edges.

Serial communication data consists of one prefixed acknowl-

edge bit and 8 data bits.

PIN DESCRIPTIONS

Pin

Name

RESET

Reset input

CS

Chip select input

WR

Write input

RD

Read input

D0~D7

SCLK

SOUT

SIN

OE

INT

Data bus

Shift clock output

Serial date output

Serial data input

Output enable output

Interrupt output

A0, A1

Xin

Xout

VCC

GND

Address input

Clock input

Clock output

Positive supply pin

Grounding pin

Input/Output

Input

Input

Input

Input

Input/Output

Output

Output

Input

Output

Output

Input

Input

Output

––

––

Functions

“L” level: M66011 is reset to initial state.

“L” level: M66011 becomes accessible.

“L” level: 8-bit parallel data is input from data bus and written on M66011.

“L” level: Serial-input 8-bit data or internal status data is output in parallel to

data bus.

Bi-directional 8-bit bus buffer. Used for communication with microcomputer

(data write and read).

Outputs clock to serial bus. Active (“H”) status normally.

Outputs serial data to serial bus. Active (“H”) status normally.

Inputs serial data from serial bus.

“L” when serial data communication is executed. Active (“H”) otherwise.

Outputs interrupt command signal to microcomputer when serial data

communication is finished.

Selects register on which data is written during write operation. Designates

data to be read during read operation.

Connected to ceramic resonator, generates M66011 activation clock and

SCLK output clock.

If clock is input from outside, use pin Xin and keep pin Xout open.

Connected positive supply (5V).

Used for grounding (0V).

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