Sanyo LC868920A Specifications
Ordering number : ENN*6703
Dot Matrix LCD Segment Driver with On-Chip
1280-Byte Display RAM for the LC868364A Expansion
Preliminary
Overview
The LC868920A is a segment driver with built-in display RAM for the liquid crystal dot matrix-graphic display. It
stores the display data sent from the 8-bit microcontroller in the internal display RAM and generates dot matrix LCD
drive signals to control LCD panels. The LC868920A controls the graphic display simply in such a way that one bit of
the display RAM corresponds to one dot of the LCD.
It is possible to expand the display capacity of LC868364A more than 32 × 100 dots by using this segment driver. The
LCD controller operates on the low frequency clock from the microcontroller except when writing to registers or RAM.
Therefore, it is suitable for personal electronics devices with LCD panelswhich operates in low-power.
Features
(1) Segment driver to expand LCD display capability for LC868364A.
(2) Internal RAM : 1280 × 8 bits
(3) Segment output port : 80 terminals
- Segment output direction : S01 → S80
CMOS IC
LC868920A
Ver.1.34
32900
91400 RM (IM) HO No.6703-1/21
LC868920A
(4) LCD automatic display controller
- Display duty : 1/1 - 1/32 duty
- LCD control functions
.
1
Number of display bits in horizontal direction control
2.
Vertical display scroll function : by changing the display start address
.
3
Read/Write display RAM
4. LCD drive frequency control
- Source clock of LCD controller : Crystal oscillator for low power consumption
- Clock for accessing registers and display RAM (R/W) : System clock from microcontroller.
(5) Power supply
- Internal logic circuit 2.5V - 6.5V
- LCD driver 3.0V - 6.5V
(6) Shipping form
- Chip delivery form
No.6703-2/21
LC868920A
Pad Assignment
Chip size (X × Y) : 4.04mm
Thickness of chip : 480
Pad size : 105
Pad pitch : 110
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
× 3.21
m
µ
m × 105µm
µ
m
µ
mm
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 73 74 75 76 77 78 79 80 72
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 8 7 6 5 4 3 2 1 9
No.6703-3/21
LC868920A
Pad name and Coord ina te s value
Pin No. Pad No. Name
1 1 S01 -1423 -1365 51 51 S51 1780 1352
2 2 S02 -1313 -1365 52 52 S52 1265 1364
3 3 S03 -1203 -1365 53 53 S53 1155 1364
4 4 S04 -1093 -1365 54 54 S54 1045 1364
5 5 S05 -983 -1365 55 55 S55 935 1364
6 6 S06 -873 -1365 56 56 S56 825 1364
7 7 S07 -763 -1365 57 57 S57 715 1364
8 8 S08 -653 -1365 58 58 S58 605 1364
9 9 S09 -543 -1365 59 59 S59 495 1364
10 10 S10 -433 -1365 60 60 S60 385 1364
11 11 S11 -323 -1365 61 61 S61 275 1364
12 12 S12 -213 -1365 62 62 S62 165 1364
13 13 S13 -103 -1365 63 63 S63 55 1364
14 14 S14 7 -1365 64 64 S64 -55 1364
15 15 S15 117 -1365 65 65 S65 -165 1364
16 16 S16 227 -1365 66 66 S66 -275 1364
17 17 S17 337 -1365 67 67 S67 -386 1364
18 18 S18 447 -1365 68 68 S68 --496 1364
19 19 S19 557 -1365 69 69 S69 -606 1364
20 20 S20 667 -1365 70 70 S70 -716 1364
21 21 S21 777 -1365 71 71 S71 -826 1364
22 22 S22 887 -1365 72 72 S72 -936 1364
23 23 S23 997 -1365 73 73 S73 -1046 1364
24 24 S24 1107 -1365 74 74 S74 -1156 1364
25 25 S25 1218 -1365 75 75 S75 -1266 1364
26 26 S26 1328 -1365 76 76 S76 -1376 1364
27 27 S27 1438 -1365 77 77 S77 -1486 1364
28 28 S28 1548 -1365 78 78 S78 -1596 1364
29 29 S29 1658 -1365 79 79 S79 -1706 1364
30 30 S30 1768 -1365 80 80 S80 -1816 1364
31 31 S31 1780 -849 81 81 V2 -1753 909
32 32 S32 1780 -739 82 82 V3 -1753 788
33 33 S33 1780 -629 83 83 V5 -1753 668
34 34 S34 1780 -519 84 84 VSS -1753 548
35 35 S35 1780 -408 85 85 DB0 -1753 428
36 36 S36 1780 -298 86 86 DB1 -1753 308
37 37 S37 1780 -188 87 87 DB2 -1753 188
38 38 S38 1780 -78 88 88 DB3 -1753 68
39 39 S39 1780 32 89 89 DB4 -1753 -52
40 40 S40 1780 142 90 90 DB5 -1753 -172
41 41 S41 1780 252 91 91 DB6 -1753 -292
42 42 S42 1780 362 92 92 DB7 -1753 -412
43 43 S43 1780 472 93 93 VDD -1753 -532
44 44 S44 1780 582 94 94 SCK -1753 -652
45 45 S45 1780 692 95 95
46 46 S46 1780 802 96 96
47 47 S47 1780 912 97 97
48 48 S48 1780 1022 98 98 RS -1753 -1132
49 49 S49 1780 1132 99 99 CL2 -1753 -1252
50 50 S50 1780 1242 100 100 M -1753 -1372
Coordinates Coordinates
Xµm Yµm
Pin No. Pad No. Name
CS
RD
WR
Xµm Yµm
-1753 -772
-1753 -892
-1753 -1012
Notes:
• When using LC868920A in the form of chip, connect the substrate of chip to VSS or leave it open.
No.6703-4/21
LC868920A
System Block Diagra m
S80
V2
V3
V5
VDD
VSS
Latch for display data
START ADDRESS
LCD DRIVER
DUTY REGISTER
SCK
CL2
RS
RD
WR
CS
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
M
TIMING
GENERATOR
INSTRUCTION
REGISTER
ADDRESS REGISTER
ADDRESS REGISTER
LOWER CURSOR
HOTIZONTAL WORD
COUNT REGISTER
UPPER CURSOR
Terminal Form
A TYPE B TYPE
VDD
IN
VSS
Terminals: M, RS, RD, WR, CL2
IN
Terminals: SCK
C TYPE D TYPE
VDD
IN/OUT
Terminals: DB0 to DB7
DATA
OUTPUT
CONTROL
OUT
Terminals: S1 to S80
DOUT
UPPER AD DRESS
RAM
(128 0 BYTES)
LOWER ADDRESS
DIN
DOUT
S01
V5
V3
V2
VSS
No.6703-5/21
LC868920A
Terminal Function Table
Terminal Pin No. Input/Output Function Description
VSS 84 - Negative power supply (-)
VDD 93 - Positive power supply (+)
DB0 - DB7 85 - 92 Input/Output Built-in Data bus
Terminals for sending/receiving data to/from the MPU
SCK 94 Input Clock for registers and disp lay RAM access
CS
RD
WR
RS 98 Input Register selection
CL2 99 Input LCD display signal (clock signal)
M 100 Input LCD display signal (synchronization signal)
V2
V3
V5
S1 - S80 1 - 80 Output LCD segment drive output terminal
95 Input Chip select terminal : Enable when CS=0
96 Input Read signal from LC868920A to LC868 364A
97 Input Write signal from LC868364A to LC868 920A
RS=1 : Instruction register
RS=0 : Data register
81
82
83
-
-
-
LCD power supply
No.6703-6/21
LC868920A
1. Absolute Maximum Ratings at Ta=25°C, VSS=0V
Parameter Symbol Pins
Supply voltage VDDMAX VDD -0.3 - +7.0
LCD Input voltage VNMAX V2,V3,V5 VSS - +7.0
CS,RD,WR
CL2,M,SCK
(Input mode)
(Output mode)
,RS,
Maximum power
consumption
Operating
temperature
Storage
temperature
VI(1)
VI(2) DB0 to DB7
VO(1) S1 to S80 -0.3 - V5+0.3 Output voltage
VO(2) DB0 to DB7
Pdmax 200 mW
Topr -30 - 70
Tstg -55 - 125
Conditions Ratings
VDD[V] min. typ. max.
-0.3 - VDD+0.3 Input voltage
-0.3 VDD+0.3
-0.3 - VDD+0.3
*) The following condition has to be satisfied: V5 ≥ V3 ≥ V2 ≥ VSS
2. Recommended Operating Range at Ta=-30 to +70°C, VSS=0V
Parameter Symbol Pins
Operating
supply voltage
range
VDD VDD
VDD[V] min. typ. max.
FSCK ≤ 6MHz 3.3 6.5
FSCK ≤ 4MHz 2.7 6.5
Conditions Ratings
unit
V
C
°
unit
V
FSCK ≤ 3MHz 2.4 6.5
Supply voltage
range in Hold
mode
LCD supply
voltage range
High level input
voltage
Low level input
voltage
Input clock
frequency
VHD VDD
V5 V5
(Input mode)
CS,RD,WR
VIH(2) CL2,M,SCK
CS,RD,WR
VIL(3) CL2,M,SCK
FCL2 CL2 2.4 - 6.5 32 32.768 33 kHz
FSCK SCK
,RS
,RS
Keep RAM and
register data in
standby mode
VSS 6.5
2.0 6.5
4.5 - 6.5 0.75VDD VDD VIH(1) DB0 to DB7
2.4 - 4.5 0.75VDD VDD
4.5 - 6.5 0.75VDD VDD
2.4 - 4.5 0.75VDD VDD
4.5 - 6.5 0 0.25VDD VIL(1) DB0 to DB7 Input mode
2.4 - 4.5 0 0.25VDD
4.5 - 6.5 0 0.25VDD VIL(2)
2.4 - 4.5 0 0.25VDD
4.5 - 6.5 0 0.25VDD
2.4 - 4.5 0 0.25VDD
2.4 - 6.5 0.3 3
2.7 - 6.5 0.3 4
3.3 - 6.5 0.3 6
MHz
Note:
The specifications above concerning recommended operating conditions and electrical characteristics
assume the chip is in the QIP100E package. However, the LSI will be delivered in die form, not in a package.
The specifications will be very similar for the die, however, depending on factors such as the board on which
the chip is mounted, t he bonding pressure, and the moul ded plastic the characteristics will differ.
The ideal operating temperature for the above specifications is Ta= 25
C ± 2°C.
°
No.6703-7/21
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