MITSUBISHI

〈DIGITAL ASSP〉

M66006P/FP

12-BIT I/O EXPANDER

1

MITSUBISHI

〈DIGITAL ASSP〉

M66006P/FP

12-BIT I/O EXPANDER

DESCRIPTION

The M66006 is a semiconductor integrated circuit which has

12-bit shift register function to execute serial-parallel conver-

sion and parallel-serial conversion.

Because a serial-parallel shift register and a parallel-serial

shift register are independently built in this IC, it is possible to

read serial input data to a shift register while converting par-

allel data into serial data. Also, parallel data I/O pins can be

set to input mode or output mode bit-by-bit.

The M66006 can be widely used for I/O port expansion of

MCU, serial bus system data communication, etc.

FEATURES

• Bi-directional serial data communication with MCU

• Read of serial data during parallel-serial conversion.

• Bit resolution of serial data I/O

• Low power dissipation (50

µW/package max.)

°C, in quiescing)

• Schmitt input (DI, CLK, S, CS)

• Open drain output (DO, from D1 to D12)

• Parallel data I/O (from D1 to D12)

°C)

APPLICATION

Serial-parallel data conversion, parallel-serial data conver-

sion, serial bus control by MCU.

PIN CONFIGURATION (TOP VIEW)

BLOCK DIAGRAM

Clock input CLK

Serial

data output

Shift register

!

Parallel output latch

Shift register

@

Set input

S

Chip

select input

Serial

data input

DO

D1

DO

D1~D12

D2

D3

D10

D11

D12

DO

GND

GND































































CS

DI

CLK

S

CS

DI

Input form

Output form

5

3

6

4

2

20

19

18

11

9

8

10

7

1

Outline 20P4

20P2N-A

DO

DI

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

CLK

CS

S

D12

D11

DO ←

DI →

CLK →

CS →

S →

GND

D12 ↔

D11 ↔

GND

↔ D1

↔ D2

↔ D3

↔ D4

↔ D5

↔ D6

↔ D7

↔ D8

↔ D9

↔ D10









































































Serial data output

120

219

318

417

516

615

714

813

912

10

11

Serial data input

Clock input

Chip select input

Set input

Parallel data I/O

Parallel data

outputs