OPERATION PANEL CONTROLLER

M66271FP

MITSUBISHI <DIGITAL ASSP>

DESCRIPTION

The M66271FP is a graphic display-only controller for displaying a

high duty dot matrix type LCD which is used widely for PPC,FAX

and multi-function telephones.

It is capable of controlling a monochrome STN LCD system of up

to 320 x 240 dots.

The IC has a built-in 9600-byte VRAM as a display data memory.

All of the VRAM addresses are externally opened. Address

mapping in the MPU memory space allows direct addressing of all

display data from the MPU,thus providing efficient display data

processing such as drawing.

The built-in arbiter circuit (cycle steal system) which gives priority

to display access allows timing-free access from MPU to VRAM,

preventing display screen distortion.

The IC provides interface with a 8-bit/16-bit MPU with a

READY(WAIT) pin.

And this IC has a function for LCD module built-in system by

lessening connect pins between MPU.

FEATURES

q Displayable LCD

•Monochrome STN dot matrix type LCD of up to 76800

dots (equivalent to 320

× 240 dots)

•Maximum display duty : 1/240 (set to 240 Line)

: 1/255 (Max)

q Display memory

•Built-in 9600-byte(76800-bit)VRAM (equivalent to one

screen of 320

× 240 dots LCD)

•All addresses of built-in VRAM are externally opened.

Outline 80P6N-A

PIN CONFIGURATION(TOP VIEW)

N.C : No Connection

•Capability of switching 8-bit type MPU/16-bit type MPU

•With WAIT output pin (Accessing register from MPU without

WAIT output. Accessing VRAM from MPU with WAIT output.)

•Capability of controlling BHE or LWR/ HWR at the interface

with a 16-bit MPU.

•LCD display data are 4-bit parallel output

•4 kinds of control signals: CP,LP,FLM and M

•Graphic display only (characters drawn graphically)

•Binary display only (without tone display function)

•Vertical scrolling is allowed within memory range

(small size LCD only)

•15 kinds of interface with MPU : A<4:1>,D<7:0>,IOCS,LW R,RD

•Accessing VRAM from MPU through I/O register

•Capability of interfacing with 8-bit type MPU only

APPLICATION

•PPC/FAX operation panel,display/operation panel of other OA

equipment

•Multi-function/public telephones

•PDA/electronic notebook/information terminal

•Other applications using LCD of 76800 dots or less

DISPLAY DATA TRANSFER CLOCK

FIRST LINE MARKER

LCD DISPLAY DATA BUS

OSCILLATOR INPUT

MPU ADDRESS BUS

DISPLAY DATA LATCH PULSE

OSCILLATOR OUTPUT

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

M66271FP

A<10>

A<11>

A<12>

A<13>

N.C

UD<2>

UD<3>

UD<1>

UD<0>

OSC2

OSC1

N.C

N.C

N.C

N.C

N.C

FLM

LP

CP

N.C

N.C

N.C

N.C

A<9>

A<8>