M66271FP Datasheet, PDF (1/21 Pages) Mitsubishi Electric Semiconductor – OPERATION PANEL CONTROLLER

MITSUBISHI <DIGITAL ASSP>
M66271FP
OPERATION PANEL CONTROLLER
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.
PIN CONFIGURATION(TOP VIEW)
q Interface with MPU
•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.
q Interface with LCD
•LCD display data are 4-bit parallel output
•4 kinds of control signals: CP,LP,FLM and M
q Display functions
•Graphic display only (characters drawn graphically)
•Binary display only (without tone display function)
•Vertical scrolling is allowed within memory range
(small size LCD only)
q Additional function for LCD module built-in system
•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
q 5V single power supply
q 80-pin QFP
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
VSS 65
DISPLAY DATA TRANSFER CLOCK CP 66
DISPLAY DATA LATCH PULSE LP 67
FIRST LINE MARKER FLM 68
UD<0> ⁶⁹
UD<1> 70
LCD DISPLAY DATA BUS _{UD<2> 71}
UD<3> 72
N.C 73
N.C ⁷⁴
N.C 75
N.C 76
VDD 77
OSCILLATOR INPUT OSC1 78
OSCILLATOR OUTPUT OSC2 ⁷⁹
VSS 80
M66271FP
40 _VSS
39 _N.C
38 _N.C
37 _N.C
36 N.C
35 VSS
34 VDD
33 N.C
32 N.C
31 A<13>
30 A<12>
29 _A<11>
28 A<10> ^{MPU ADDRESS BUS}
27 A<9>
26 _A<8>
25 _VSS
Outline 80P6N-A
N.C : No Connection