Block Diagram

Pin Functions

Type: I: Input pin, O: Output pin, B: Bidirectional pin, P: Power supply pin, NC: No connection

No. 5155-3/5

LC82102, LC82102W

Pin No.

Symbol

I/O

Function

1

D7

B

2

D6

B

3

D5

B

4

D4

B

CPU interface data bus

5

D3

B

D7 is the MSB and D0 is the LSB.

6

D2

B

7

D1

B

8

D0

B

9

DGND

P

Digital system ground

10

P

Digital system power supply

11

A8

I

12

A7

I

13

A6

I

CPU interface address bus

14

A5

I

A8 is the MSB and A0 is the LSB.

15

A4

I

16

A3

I

17

DGND

P

Digital system ground

18

A2

I

19

A1

I

CPU interface address bus

20

A0

I

Continued on next page.