M66010FP Mitsumi Electronics, Corp., M66010FP Datasheet

M66010FP

Manufacturer Part Number

M66010FP

Description

Manufacturer

Mitsumi Electronics, Corp.

Datasheet

1.M66010FP.pdf (5 pages)

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DESCRIPTION

M66010 Semiconductor Integrated Circuit inputs 24-bit data

in series and outputs it in parallel and vice versa, using shift

Equipped with 2 independent shift registers, one for serial-to-

parallel, the other for parallel-to-serial, this IC is able to read

serial input data into a shift register while converting data

from parallel to serial. Parallel input/output pins are set to in-

put or output according to the bit.

The M66010 is useful in a wide range of applications, such as

MCU (micro controller unit) input/output port extension and

serial bus system data communication.

FEATURES

• Two-way serial data communication with MCU

• Serial data intake possible during parallel-to-serial conver-

• Parallel input/output switchable according to the bit

• Low power dissipation: 100 W maximum per package

• Schmidt input (DI, CLK, S, CS)

• Open drain output (DO, D1 thru D24)

• Parallel data input and output (D1 thru D24)

• Wide operating supply voltage range (V

APPLICATION

MCU-related serial-parallel data conversion, serial bus con-

trol by MCU, etc.

FUNCTION

The M66010 is produced by using the silicon gate CMOS

(complementary metal-oxide semiconductor) technology. It is

distinguished for low power dissipation and high noise resis-

tance.

Because two independent shift registers are built in, one for

serial-to-parallel, the other for parallel-to-serial, this IC is able

to read serial input data into a shift register while converting

parallel data into serial data.

One cycle of latching 24-bit parallel data and outputing it in

series while taking in serial data from MCU is initiated by

CS’s shift from “H” to “L”. At CS fall edges, 24-bit parallel data

is latched, and output in series from pin DO synchronously

with shift clock fall edges. At shift clock rise edges, serial data

is taken in from MCU via pin DI. The data is read into shift reg-

ister. The 25th and following shift clock pulses are ignored

and read-in operation is masked. The pin D0 status shifts to

high-impedance. As CS is then shifted from “L” to “H”, 24-bit

serial data taken in via pin DI is output in parallel to pins D1

thru D24. Because parallel output pins are the n-channel

open drain output type, write data “H” for pins which should

be set to input.

sion

=5V, Ta = 25˚C, quiescent)

= 2V ~ 6V)

OPERATION

(1) When power is turned on, the status of pins D0 and D1

(2) At CS fall edges, the status of pins D1 thru D24 is loaded

(3) At CLK fall edges, 24-bit data loaded as described above

(4) At CLK rise edges, 24-bit serial data is taken in from pin

(5) The 25th and following CLK pulses are ignored, and serial

(6) At CS rise edges, data written as described in (4) is output

(7) Shift register 1 loads data added from outside as well as

(8) If the CS rises before CLK reaches the 24th bit, parallel

(9) Pins D1 thru D24 are switched between input and output

PIN CONFIGURATION (TOP VIEW)

SERIAL DATA OUTPUT

SERIAL DATA INPUT

CHIP SELECT INPUT

CLOCK INPUT

thru D24 is unstable. Their status turns high-impedance

when S is shifted to “L”.

on shift register 1.

is output in series from pin D0.

DI and written on shift register 2.

data write is discontinued. Pin D0 status turns high-imped-

ance.

to pins D1 thru D24.

AND tie data which has the same contents as data latched

by serial output latch.

output latch latches data which has been written on shift

according to serial data input to pin DI. Pins for which “H”

is written are set to input.

PARALLEL

SET INPUT

DATA

I/O

D24

D23

D22

D21

D20

D19

D18

D17

GND

CLK

M66010FP/GP

MITSUBISHI DIGITAL ASSP

Outline

MITSUBISHI DIGITAL ASSP

CLK

D24

D23

D22

D21

D20

D19

D18

D17

32P2W-A

32P2U-B

D10

D11

D12

D13

D14

D15

D16

M66010FP/GP

24-BIT I/O EXPANDER

D10

D11

D12

D13

D14

D15

D16

PARALLEL

DATA

I/O

Related parts for M66010FP

M66010FP Summary of contents

Page 1

... D1 thru D24. (9) Pins D1 thru D24 are switched between input and output according to serial data input to pin DI. Pins for which “H” is written are set to input. MITSUBISHI DIGITAL ASSP MITSUBISHI DIGITAL ASSP M66010FP/GP 24-BIT I/O EXPANDER 24-BIT I/O EXPANDER ...

Page 2

... D24 D23 D22 Q24 Q23 Q22 Shift register Output type DO9 DI4 DI5 DI6 DI7 DI8 DI9 One cycle M66010FP/GP 24-BIT I/O EXPANDER SERIAL DATA 1 DO OUTPUT PARALLEL DATA I/O 10 D22 9 D23 8 D24 7 16 ...

Page 3

... =6. =GND V =6. GND V =6. Test conditions Min. 2.5 C =50pF L R =1k L (Note) M66010FP/GP 24-BIT I/O EXPANDER Ratings Unit –0.5 ~ +7.0 V –0 0 –0 0 – – –150 mA –65 ~ 150 ˚C Unit Max ...

Page 4

... DO, D1~D24 (1) Pulse generator (PG) characteristics (2) Capacitance C L and probe input capacitance. M66010FP/GP 24-BIT I/O EXPANDER Limits Unit Ta=25˚C Ta= –20~75˚C Typ. Max. Min. Max. ns 260 130 ns 130 130 130 ns 130 130 ...

Page 5

... CS 50% 50 CLK 50 50% S GND t PZL 50 50% 50% GND t PZL 50 GND 50% GND V CC GND V CC 50% GND V CC GND V CC 50% GND 50% GND M66010FP/GP 24-BIT I/O EXPANDER V CC 50% GND t rec V CC 50% GND 5 ...

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