M66273FP Datasheet, PDF (1/34 Pages) Mitsubishi Electric Semiconductor – LCD CONTROLLER with VRAM

MITSUBISHI <DIGITAL ASSP>
M66273FP
Ver.3.1 Dec,1999
LCD CONTROLLER with VRAM
DESCRIPTION
The M66273 is a graphic display-only controller for dot matrix type STN-
LCD which is used widely for OA equipment, PDA, amusement
equipment, etc.
The M66273 is an advanced product from the M66272 at the point of MPU
interface and timing specifications. This LCD display functions are the
same with the M66272.
It is capable of displaying six types of LCD by combining the panel
configuration(single or dual scan), LCD display function(binary or gray
scale), LCD display data bus width(4 or 8 bit).
Panel
configuration
Single scan
Dual scan
Binary/
gray scale
LCD
display
data
Displayable LCD size
4bit
Binary
8bit
Equivalent to 640 x 240
Gray scale
4bit
8bit
Equivalent to 320 x 240
Binary
4bit
Equivalent to 320 x 240 x 2 screens
Gray scale
4bit
Equivalent to 320 x 120 x 2 screens
The M66273 can support the reflective color type LCD (ECB : Electrically
Controlled Birefringence).
The IC has a built-in 19200-byte VRAM as a display data memory. All of
the VRAM addresses are externally opened. Direct addressing of display
data can be performed from MPU, thus display data processing such as
drawing can be efficiently carried out.
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 has a function for LCD module built-in system by
lessening connect pins between the MPU and the IC.
FEATURES
· Display memory
·Built-in 19200-byte(153.6-Kbit) VRAM(Equivalent to 640 x 240 dots x 1
screen, 320 x 240 dots x 2 screens)
· All addresses of built-in VRAM are externally opened.
· Displayable LCD
· Binary display
Monochrome STN-LCD of up to 153600 dots(equivalent to 1/2
VGA)
· 4 gray scale display
Monochrome STN-LCD of up to 76800 dots(equivalent to 1/4 VGA)
Reflective color STN-LCD of up to 76800 dots (equivalent to 1/4
VGA)
· Interface with MPU
· Capability of switching the interface with two-way 8/16-bit MPU
· Provides WAIT output pin(WAIT output when access from MPU to
VRAM is gained)
· Capability of controlling BHE or LWR/HWR at the interface with a
16-bit MPU
· Interface with LCD
· LCD display data bus is a 4-bit or 8-bit parallel output.
· 4 kinds of control signals: CP, LP, FLM and M
· Display functions
· Graphic display only
· Binary or 4 gray scale display(gray scale palette is used to set
pseudo medium 2 gray scale.)
· Reflective color(ECB) uses a gray scale function.
· Vertical scrolling is allowed within memory range.
· Additional function for LCD module built-in system
· Capability of interfacing with two-way 8/16-bit MPU(16-bit MPU
byte access is not allowed.)
· Access from MPU to VRAM is gained via the I/O register.
· 5V or 3V single power supply
APPLICATION
PPC/FAX operation panel, display/operation panel of other OA
equipment, multifunction/public telephone
· PDA/electronic notebook/information terminal, portable terminal
· Game, Amusements, Kids computer, etc.
PIN CONFIGURATION
(TOP VIEW)
VSS
65
DISPLAY DATA TRANSFER CLOCK CP
66
DISPLAY DATA LATCH PULSE LP
67
FIRST LINE MARKER SIGNAL FLM
68
VD<0>
69
VD<1>
70
VD<2>
71
VD<3>
72
LCD DISPLAY DATA BUS
VD<4>
73
VD<5>
74
VD<6>
75
VD<7>
76
VDD
77
N. C
78
N. C
79
VSS
80
M66273FP
40
VSS
39 N.C
38 _N.C
37 _N.C
36 _CSE
CYCLE STEAL
35
VSS
ENABLE
34
VDD
33 WAITCNT WAIT CONTROL
32 _A<14>
31 _A<13>
30 A<12>
29 _A<11>
28 _A<10>
27 _A<9>
MPU ADDRESS
BUS
26 _A<8>
25
VSS
Outline 80P6N-A
N.C : No Connection
1