LC709004AMJ-AH 查看數據表（PDF） - ON Semiconductor

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LC709004AMJ-AH

I/O-Expander for Microcontroller

ON Semiconductor 

Block Diagram

DIN

CLK

CS

RES

LC709004A

Serial/parallel converter/shift register

I/O control/output register

DOUT

VDD

VSS

Port 0 I/O buffer

Port 1 I/O buffer

Pin Description

Pin Name I/O

Description

VSS

- • - power supply pin

VDD

VDDP1

- • + power supply pin

• VDD is the power supply pin for blocks other than I/O ports (P00 to P17).

• VDDP1 is the power supply pin for port pins P00 to P17.

(Notes)

• VDDP1 must not be set higher than VDD (VDDP1≤VDD).

Port 0

I/O • 8-bit I/O port

P00 to P07

• I/O specifiable in 1 bit units.

• CMOS/Nch-open drain specifiable in 1 bit units.

• Output voltage variable in 1 port units according to VDDP1 voltage.

Port 1

I/O • 8-bit I/O port

P10 to P17

• I/O specifiable in 1 bit units.

• CMOS/Nch-open drain specifiable in 1 bit units.

• Output voltage variable in 1 port units according to VDDP1 voltage.

DIN

I • Serial data input pin

DOUT

O • Serial data output pin

CLK

I • Serial clock input pin

• Port data is placed on DOUT on the falling edge of this clock.

• The data from DIN is latched on the negative-to-positive transition of this clock.

CS

I • Chip select input pin

• Setting this pin to the low level enables serial data to be input or output.

RES

I • Device's system reset input pin

• Setting this pin to the low level initializes the internal control circuit and

registers and puts DOUT in the high level and all data port pins (P00 to P17)

into the Hi-Z state.

I/O Type

Output: CMOS/Nch-OD

Input: TTL

Output: CMOS/Nch-OD

Input: TTL

Input: TTL

Output: CMOS

Input: TTL Schmidt

Input: TTL Schmidt

Input: TTL Schmidt

Reset Time State

Hi-Z

Hi-Z

High

No.A0165-6/13

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