SANYO LC7930N

Ordering number: EN2778C
CMOS LSI
LC7930N, 7930NW
LCD Drivers
Overview
Package Dimensions
The LC7930N, 7930NW are CMOS LSIs which incorporate
20-bit shift register, latch, and two sets of 20 LCD drivers.
They also have two switching pins: one of them (channel 2)
can be used as a scan-line driver (back plate) and the other
(channel 1) as a segment driver. They are optimal for LCD
interface with microcontroller (4 or 8 bits) or dot matrix
controller circuit incorporating character generator.
unit : mm
3055A-QFP60C
[LC7930N]
Features
. Two channels of 20 output segment drivers
. The configuration of 20 output segment drivers + 20
terminal drivers available
. scanning
A series data to connect with the microcontroller and three
signals
. control
Able to be connected in series for large display
. Built-in bidirectional shift register can be shifted in the
that makes wiring easy
. direction
Operating supply voltage/ Operating temperature:
= 4.5 to 5.5 V / Topr = –20 to +75°C
. VOperating
current drain : I = 1.0 mA max
(Logic = 400 kHz, LCD = 1 kHz)
. Package : Pin 60 Flat LC7930N : QIP60
DD
DD
Pin 64 Flat LC7930NW : SQFP64
SANYO : QIP60C
unit : mm
3190-SQFP64
[LC7930NW]
SANYO : SQFP64
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
13097HA(II)/12593JN/6031JN/6218TA,TS No.2778-1/7
LC7930N, 7930NW
Specifications
Absolute Maximum Ratings at Ta = 25 ± 2°C
Parameter
Symbol
Maximum supply voltage
Maximum input voltage
Conditions
Ratings
Unit
VDD max
–0.3 to +7.0
VEE max
VDD–13.5 to VDD+0.3
V
–0.3 to VDD+0.3
V
VI max
Maximum output voltage
VO max
Allowable power dissipation
Pd max
V1, V2, V3, V4, V5, V6
V
VEE to VDD+0.3
V
–0.3 to VDD+0.3
V
Output transistor OFF, Y1 to Y40
VEE to VDD+0.3
V
100
mW
Operating temperature
Topr
–20 to +75
°C
Storage temperature
Tstg
–55 to +125
°C
Note : Don’t soak the whole of IC into the tank filled with melted solder for soldering
Allowable Operating Conditions at Ta = –20 to +75°C, VSS = 0 V, VEE = –4 to –6 V
Parameter
Supply voltage
High-level input voltage
Low-level input voltage
Shift frequency
High-level clock width
Low-level clock width
Data setup time
Symbol
VDD
VIH
VIL
fCL
tCWH
tCWL
tSU
Clock transition time
tSL
tLS
tct
Data retention time
tDH
Clock setup time
Conditions
VDD
Note (1)
Note (1)
CLKSR
CLKSR, CLKLA
CLKSR
LDATA1, LDATA2,
RDATA1, RDATA2
CLKSR, CLKLA
CLKSR, CLKLA
CLKSR, CLKLA
LDATA1, LDATA2,
RDATA1, RDATA2
CLKSR → CLKLA
CLKLA → CLKSR
min
4.5
0.7VDD
VSS
typ
max
5.5
VDD
0.3VDD
400
800
800
Unit
V
V
V
kHz
ns
ns
300
ns
500
500
ns
ns
ns
200
300
ns
Electirical Characteristics at Ta = –20 to +75°C, VDD = +5 V ± 10%, VSS = 0 V, VEE = –4 to –6 V
Parameter
Symbol
IIH
IIL
High-level output voltage
VOH
Low-level output voltage
VOL
Vi to Yj voltage down
Vd1
Vd2
Note (1)
Note (1)
LDATA1, LDATA2,
RDATA1, RDATA2
LDATA1, LDATA2,
RDATA1, RDATA2
Y1 to Y40 Note (2)
Y1 to Y40 Note (2)
IVH
V1 to V6
IVL
V1 to V6
IDD
VDD
IEE
tPD
Input leakage current
IOH = –0.4 mA
min
typ
max
5
–5
VDD–0.4
Unit
µA
µA
V
IOL = 0.4 mA
0.4
V
1.1
1.5
V
V
10
µA
VEE
Ion = 100 µA, single output
Ion = 50 µA, all outputs
Open output pins
Vin = VDD
Open output pins
Vin = VEE
Open output pins
CLKSR = 400 kHz
Open output pins
M = 1 kHz
LDATA1, LDATA2,
RDATA1, RDATA2
CL = 15 pF
Vi quiescent current
Supply current
Output propagation
delay time
Conditions
Vin = VDD
Vin = VSS
–10
µA
1.0
mA
10
µA
500
ns
Note (1): Applied to the pins; CLKSR, CLKLA, LDATA1, RDATA1, LDATA2, RDATA2, M, L/R1, L/R2, CH2-BP
(2): The equivalent circuit between Vi to Yj (i = 1 to 6, j = 1 to 40)
No.2778-2/7
LC7930N, 7930NW
Switching Waveforms
Internal Equivalent Circuit
LCD driver
(Channel 1)
20-bit latch
20-bit bidirectional
shift register
20-bit bidirectional
shift register
20-bit latch
LCD driver
(Channel 2)
No.2778-3/7
LC7930N, 7930NW
Pin Assignment
[LC7930N]
Number
Name
Input/Output
Number
Name
Input/Output
Number
Name
Input/Output
1
Y30
Output
21
Y14
Output
41
RDATA1
Input/Output
2
Y31
Output
22
Y13
Output
42
LDATA2
Input/Output
3
Y32
Output
23
Y12
Output
43
RDATA2
Input/Output
4
Y33
Output
24
Y9
Output
44
N.C.
—
5
Y34
Output
25
Y10
Output
45
M
Input
6
Y29
Output
26
Y11
Output
46
L/R1
Input
7
Y28
Output
27
Y8
Output
47
L/R2
Input
8
Y27
Output
28
Y7
Output
48
CH2-BP
Input
9
Y26
Output
29
VDD
—
49
V1
Input
10
Y25
Output
30
Y6
Output
50
V2
Input
11
Y24
Output
31
Y5
Output
51
V3
Input
12
Y23
Output
32
Y4
Output
52
V4
Input
13
Y22
Output
33
Y3
Output
53
V5
Input
14
Y21
Output
34
Y2
Output
54
V6
Input
15
Y20
Output
35
Y1
Output
55
Y40
Output
16
Y19
Output
36
VEE
—
56
Y39
Output
17
Y18
Output
37
CLKLA
Input
57
Y38
Output
18
Y17
Output
38
CLKSR
Input
58
Y37
Output
19
Y16
Output
39
VSS
—
59
Y36
Output
20
Y15
Output
40
LDATA1
Input/Output
60
Y35
Output
Number
Name
Input/Output
Number
Name
Input/Output
Number
Name
Input/Output
1
V5
Input
23
Y6
Output
45
Y26
Output
2
V4
Input
24
VDD
—
46
Y27
Output
3
V3
Input
25
Y7
Output
47
Y28
Output
4
V2
Input
26
Y8
Output
48
Y29
Output
5
V1
Input
27
Y11
Output
49
N.C.
—
6
CH2-BP
Input
28
Y10
Output
50
Y34
Output
7
L/R2
Input
29
Y9
Output
51
Y33
Output
8
L/R1
Input
30
Y12
Output
52
Y32
Output
9
M
Input
31
Y13
Output
53
Y31
Output
10
RDATA2
Input/Output
32
N.C.
—
54
Y30
Output
11
LDATA2
Input/OUtput
33
Y14
Output
55
N.C.
—
12
RDATA1
Input/Output
34
Y15
Output
56
N.C.
—
13
LDATA1
Input/Output
35
Y16
Output
57
Y35
Output
14
VSS
—
36
Y17
Output
58
Y36
Output
15
CLKSR
Input
37
Y18
Output
59
Y37
Output
16
CLKLA
Input
38
Y19
Output
60
Y38
Output
[LC7930NW]
17
VEE
—
39
Y20
Output
61
Y39
Output
18
Y1
Output
40
Y21
Output
62
Y40
Output
19
Y2
Output
41
Y22
Output
63
V6
Input
20
Y3
Output
42
Y23
Output
64
N.C.
—
21
Y4
Output
43
Y24
Output
22
Y5
Output
44
Y25
Output
No.2778-4/7
LC7930N, 7930NW
Pin Descriptions
Pin Name
Function
VDD
Logic circuitry power supply (+5 V ±10%)
VSS
0V
VEE
LCD driver power supply (–4 to –6 V)
Y1 to Y20
Channel 1 LCD driver output pins
Y21 to Y40
Channel 2 LCD driver output pins
V1, V2
Reference voltage for selected driver outputs
V3, V4
Reference voltage for non-selected driver outputs (channel 1)
V5, V6
L/R1
L/R2
Reference voltage for non-selected driver outputs (channel 2)
Shift direction for channel 1 shift register
L/R1
LDATA1
RDATA1
High-level
Output
Input
Low-level
Input
Output
Shift direction for channel 2 shift register
L/R2
LDATA2
RDATA2
High-level
Output
Input
Low-level
Input
Output
LDATA1
RDATA1
Serial data input/output pins for channel 1 shift register
LDATA2
RDATA2
Serial data input/output pins for channel 2 shift register
M
Switching clock signal for LCD driver.
CLKLA
Latches channael 1 data on the falling edge.
This also will latch channel 2 data on the falling edge if CH2-BP is low.
CLKSR
Shift channel 1 data on the falling edge.
This also will shift channel 2 data on the falling edge if CH2-BP is low.
CH2-BP
Switches the mode of channel 2.
Exchanges the latch signal for the shift signal of channel 2 and invert the M signal.
Channel 2, then, can be used as a scan-line driver.
CH2-BP
Channel 2
Latch
Shift
M
High
CLKSR
CLKLA
M
For scan-line driver
Low
CLKLA
CLKSR
M
For signal line driver
Functional Description
LC7930N, LC7930NW are serial data transfer type LCD drivers.
Data inputted serially from the data pin is shifted successively by the synchronizing clock (CLKSR) and latched by the latch clock
(CLKLA) when the all data are shifted.
. Segment terminal
.
When CH2-BP goes to low, the data of channel 1 and channel 2 are shifted at the falling edge of CLKSR, and then latched at
the falling edge of the CLKLA. The reference pulse will be switched to selected or unselected due to the latched data.
Scan terminal
When CH2-BP goes to high, the data of channel 2 is shifted at the rising edge of CLKLA, and then latched at the rising edge of
the CLKSR. When FLM signal, as a data, is inputted, the output will be scan terminal drive mode.
Continued on next page.
No.2778-5/7
LC7930N, 7930NW
Continued from preceding page.
(1) Waveform Diagrams for Segment Drive Mode (CH2 – BP = ‘‘L’’)
(FLM)
M
CLKLA(latch)
CLKSR(shift)
Serial input data
Latch outputs
(Y1 to Y40)
(2) Waveform Diagrams for Scan-Line/Segment Drive Mode (CH2–BP = ‘‘H’’)
LDATA2/RDATA2
(FLM)
M
CLKLA (shift)
CLKSR(latch)
Y21 to Y40
Table 1. LCD Driver Output Voltages (V1 to V6) for Y1 to Y40
CH2–BP
High level
(1)
Serial Input Data
M
Output
Y1 to Y20
Y21 to Y40
1
(selected)
H
V1
V2
L
V2
V1
0
(un-selected)
H
V3
V6
L
V4
V5
1
Low level
(2)
0
H
V1
V1
L
V2
V2
H
V3
V5
L
V4
V6
No.2778-6/7
LC7930N, 7930NW
LCD Interface Examples
(Although the LCD divided voltage generator circuit is not shown here.)
Output port
(1) 40-segment bar-graph display (static)
4-bit
microcontroller
40 lines
4 lines
(2) 6-digit, 7-segment + sign display. (1/3 duty cycle, 1/3 voltage bias)
3 lines
4-bit
microprocessor
Output port
Drive controller
20 lines
(3 lines/1 digit)
3 lines
5 lines
(3) 20 × 60 pixel graphic display. (1/20 duty cycle, 1/5 voltage bias)
20 lines
20 × 60 dots
Drive controller
40 lines
20 lines
8-bit
microprocessor
or
dedicated
controller
3 lines
3 lines
3 lines
No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors
and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:
2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use
or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of January, 1997. Specifications and information herein are subject to change without notice.
No.2778-7/7