6/18

¡ Semiconductor

MSM65355

Basic Function (Continued)

Description

Function

Pin

Type

88

I

1-bit input port (port 6.0)

89

O

1-bit output port (port 6.1). After reset, this port is pulled up to 1.

During reset, if this port is forcibly cleared to 0, this IC goes into test

mode, disabling execution of the use program.

90

to

95

I/O 6-bit input-output port (port6)

52

to

59

I/O 8-bit input-output port (port7): input or output can be selected for

each bit by the port 7 direction register (P7DIR). In addition to their

input or output port functions, P7.4 to P7.7 pins have secondary

functions: see Secondary Function.

32

to

35

I/O 8-bit input-output port (port8): Input or output can be selected for

each bit by the port 8 direction register (P8DIR).

LCD

Driver

1

to

4

O

LCD common signal output pin

5

to

20

O

LCD segment signal output pin

Ports

Symbol

P6.0

P6.1

(TEST)

P6.2

to

P6.7

P7.0

to

P7.7

P8.0

to

P8.3

COM1

to

COM4

SEG0

to

SEG15