LC709006A

No.8265-7/14

Block Diagram

Pin Description

Pin Name

I/O

Description

I/O Type

Reset Time

VSS

VSSP0

VSSP2

-

• - power supply pin

• VSS is the power supply pin for blocks other than I/O ports (P00 to P27).

• VSSP0 is the power supply pin for port pins P00 to P07.

• VSSP2 is the power supply pin for port pins P10 to P17 and P20 to P27.

VDD

VDDP0

VDDP1

VDDP2

-

• + power supply pin

• VDD is the power supply pin for blocks other than I/O ports (P00 to P27).

• VDDP0 is the power supply pin for port pins P00 to P07.

• VDDP1 is the power supply pin for port pins P10 to P17.

• VDDP2 is the power supply pin for port pins P20 to P27.

(Notes)

• VDDP0 must not be set higher than VDD l (VDDP0≤VDD).

• VDDP1 must not be set lower than VDD (VDDP1≥VDD).

• VDDP2 must not be set lower than VDD (VDDP2≥VDD).

Port 0

I/O

• 8-bit I/O port

• 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 VDDP0 voltage.

Output:

CMOS/Nch-OD

Input: TTL

Hi-Z

P00 to P07

Port 1

I/O

• 8-bit I/O port

• 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.

Output:

CMOS/Nch-OD

Input: TTL

Hi-Z

P10 to P17

Port 2

I/O

• 8-bit I/O port

• 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 VDDP2 voltage.

Output:

CMOS/Nch-OD

Input: TTL

Hi-Z

P20 to P27

Continued on next page.

Port 1 I/O buffer

I/O control/output register

Serial/parallel converter/shift register

DOUT

VDD

VSS

VDDP2

P27

P20

VSSP2

DIN

CLK

CS

RES

VDDP0

P00

P07

VSSP0