EM62100AGH datasheet(17/60 Pages) EMC

17 / 60 page

EM62100

65 COM/132 SEG STN LCD Driver

Product Specification (V1.1) 09.13.2005

•••• 11

(This specification is subject to change without further notice)

6 Function Description

6.1 MPU Interface

6.1.1 Selecting the Interface Type

The EM62100 chip has three types of interface with an MPU, which are two parallel

interfaces and serial interface. The interface is determined by the P/S terminal polarity

to the “H” or “L”, as shown in Table 2.

Table 2

P/S

CS1B CS2

RDB WRB

M86

D5~D0

H: Parallel Input

CS1B CS2

RDB WRB

M86

D5~D0

L: Serial Input

CS1B CS2

SCL

(Hi-Z)

“--“Indicates fixed to either “H” or to “L”

6.1.2 Parallel Interface

When the parallel interface has been selected (P/S=”H”), then it is possible to connect

directly to either an 8080-series MPU or a 6800-series MPU by selecting the M86

terminal to either “H” or to “L”.

Table 3

M86

CS1B

CS2

RDB

WRB

D7~D0

L: 80-series MPU

CS1B

CS2

RDB

WRB

D7~D0

H: 68-series MPU

CS1B

CS2

D7~D0

The type of data transfer is determined by signals at RS, RDB (E), WRB (RW) as

shown in Table 4.

Table 4

68-Series

80-Series

RDB

WRB

Function

Reads display data

Writes display data

Read status

Write control data (command)

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