SANYO LC75878E, LC75878W Datasheet

Ordering number : ENN*6473

41000RM (OT) No. 6473 -1/33

Overview

The LC75878E and LC75878W are 1/8 to 1/10 duty general-purpose LCD display drivers used for character and graphics display. These products operate under the control of a microcontroller and can directly drive an LCD with up to 730 segments. They can also control up to 4 general-purpose output ports.

Features

• 1/8duty–1/4bias, 1/9duty–1/4bias, and 1/10duty–1/4bias drive schemes can be controlled from serial data.

1/8duty–1/4bias: up to 600 segments 1/9duty–1/4bias: up to 666 segments 1/10duty–1/4bias: up to 730 segments

• Serial data input supports CCB format communication with the system controller.

• Serial data control of the power-saving mode based backup function and all the segments forced off function.

• Direct display of display data without the use of a decoder provides high generality.

• Built-in display contrast adjustment circuit.

• Up to 4 general-purpose output ports are included.

• Independent LCD driver block power supply V

LCD

.

• The INH pin is provided. This pin turns off the display and forces the general-purpose output ports to the low level.

• RC oscillator circuit

Package Dimensions

unit: mm

3151-QFP100E

unit: mm

3181B-SQFP100

21.6

0.8

3.0max

1.6

17.2

0.825

130

31

50

51

80

81

1.6

0.575

0.15

2.7

15.6

0.3

20.0

23.2

14.0

0.65

0.825

100

0.8

0.65

0.1

Preliminary

SANYO: QFP100E

[LC75878E]

0.2

1.0

16.0

14.0

0.5

16.0

14.0

0.5

1.0

0.145

1.4

1.6max

0.5 0.5

100

125

26

50

5175

76

0.1

SANYO: SQFP100

[LC75878W]

LC75878E, 75878W

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

1/8 to 1/10 Duty General-Purpose LCD Display Drivers

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO.

No. 6473-2/33

LC75878E, 75878W

Pin Assignment

No. 6473-3/33

LC75878E, 75878W

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage

V

DD

max V

DD

–0.3 to +7.0

V

LCD

max V

LCD

–0.3 to +12.0

V

IN

1 CE, CL, DI, INH –0.3 to +7.0

Input voltage V

IN

2 OSC –0.3 to VDD+0.3 V

V

IN

3V

LCD

1, V

LCD

2, V

LCD

3, V

LCD

4 –0.3 to V

LCD

+0.3

Output voltage

V

OUT

1 OSC, P1 to P4 –0.3 to VDD+0.3

V

OUT

2V

LCD

0, S1 to S75, COM1 to COM10 –0.3 to V

LCD

+0.3

I

OUT

1 S1 to S75 300 µA

Output current I

OUT

2 COM1 to COM10 3

mA

I

OUT

3 P1 to P4 5 Allowable power dissipation Pd max Ta = 85°C 200 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –55 to +125 °C

Specifications

Absolute Maximum Ratings at Ta=25°C, VSS=0V

Parameter Symbol Conditions

Ratings

Unit

min typ max

V

DDVDD

2.7 6.0

V

LCD

, When the display contrast adjustment 7.0 11.0

Supply voltage

V

LCD

circuit is used V V

LCD

, When the display contrast adjustment 4.5 11.0

circuit is not used

Output voltage V

LCD

0V

LCD

0

V

LCD

4 + 4.5

V

LCD

V

LCD

1V

LCD

1

3/4

V

LCD

0

(V

LCD

0–V

LCD

4)

V

LCD

2V

LCD

2

2/4

V

LCD

0

Input voltage

(V

LCD

0–V

LCD

4)

V

LCD

3V

LCD

3

1/4

V

LCD

0

(V

LCD

0–V

LCD

4)

V

LCD

4V

LCD

4 0 1.5

Input high level voltage V

IH

CE, CL, DI, INH 0.8 V

DD

6.0 V

Input low level voltage V

IL

CE, CL, DI, INH 0 0.2 V

DD

V

Recommended external resistance R

OSC

OSC 43 kΩ

Recommended external capacitance C

OSC

OSC 680 pF

Guaranteed oscillation range f

OSC

OSC 25 50 100 kHz

Data setup time t

ds

CL, DI :Figure 2 160 ns

Data hold time t

dh

CL, DI :Figure 2 160 ns

CE wait time t

cp

CE, CL :Figure 2 160 ns

CE setup time t

cs

CE, CL :Figure 2 160 ns

CE hold time t

ch

CE, CL :Figure 2 160 ns

High level clock pulse width tø

H

CL :Figure 2 160 ns

Low level clock pulse width tø

L

CL :Figure 2 160 ns

INH switching time t

c

INH, CE :Figures 3, 4, and 5 10 µs

Allowable Operating Ranges at Ta = –40 to +85°C, VSS=0V

No. 6473-4/33

LC75878E, 75878W

Parameter Symbol Conditions

Ratings

Unit

min typ max

Hysteresis V

H

CE, CL, DI, INH 0.1 V

DD

V

Input high level current I

IH

CE, CL, DI, INH: VI= 6.0 V 5.0 µA

Input low level current I

IL

CE, CL, DI, INH: VI= 0 V –5.0 µA

V

OH

1 S1 to S75: IO= –20 µA

V

LCD

0 – 0.6

Output high level voltage VOH2 COM1 to COM10: IO= –100 µA

V

LCD

0 – 0.6

V

OH

3 P1 to P4: IO= –1 mA VDD– 1.0

V

OL

1 S1 to S75: IO= 20 µA

V

LCD

4 + 0.6

Output low level voltage VOL2 COM1 to COM10: IO= 100 µA

V

LCD

4 + 0.6

V

OL

3 P1 to P4: IO= 1 mA 1.0

2/4 2/4

V

MID

1 S1 to S75: IO= ±20 µA

(V

LCD

0 – V

LCD

4) (V

LCD

0 – V

LCD

4)

–0.6 +0.6 3/4 3/4

Output middle level voltage * V

MID

2 COM1 to COM10: IO= ±100 µA

(V

LCD

0 – V

LCD

4) (V

LCD

0 – V

LCD

4)

V

–0.6 +0.6 1/4 1/4

V

MID

3 COM1 to COM10: IO= ±100 µA

(V

LCD

0 – V

LCD

4) (V

LCD

0 – V

LCD

4)

–0.6 +0.6

Oscillator frequency fosc OSC: R

OSC

= 43 kΩ, C

OSC

= 680 pF 40 50 60 kHz

I

DD

1VDD: Power saving mode 5

I

DD

2VDD: VDD= 6.0 V,

outputs open, fosc = 50 kHz

200 400

I

LCD

1V

LCD

: Power saving mode 5

V

LCD

: V

LCD

= 11.0 V

I

LCD

2

Outputs open

500 1000 µA

Current drain

fosc = 50 kHz When the display contrast adjustment circuit is used.

V

LCD

: V

LCD

= 11.0 V

I

LCD

3

Outputs open

250 500

fosc = 50 kHz When the display contrast adjustment circuit is not used.

Electrical Characteristics for the Allowable Operating Ranges

Note: * Excluding the bias voltage generation divider resistor built into V

LCD

0, V

LCD

1, V

LCD

2 , V

LCD

3, and V

LCD

4. (See Figure 1.)

No. 6473-5/33

LC75878E, 75878W

Figure 1

• When CL is stopped at the low level

Figure 2

• When CL is stopped at the high level

To the common and segment drivers

Excluding these resistors

CONTRAST ADJUSTER

No. 6473-6/33

LC75878E, 75878W

Block Diagram

GENERAL PORT

COMMON

DRIVER

SEGMENT DRIVER & LATCH

CONTROL

REGISTER

CLOCK

GENERATOR

CONTRAST

ADJUSTER

SHIFT REGISTER

CCB INTERFACE

No. 6473 -7/39

LC75878E, 75878W

Pin No.

Function Active I/O

Handling

LC75878E LC75878W

when unused

S1 to S73 3 to 75 1 to 73 Segment driver outputs.

S74/COM10 76 74 The S74/COM10 and S75/COM9 pins can be used as common — ●● Open

S75/COM9 77 75 driver outputs under the control data.

COM1 to COM8

85 to 78 83 to 76 Common driver outputs. — ●● Open

P1 to P4 86 to 89 84 to 87 General-purpose output ports. — ●● Open

OSC 98 96 — I/O V

DD

CE 100 98 HI CL 1 99 I GND

DI 2 100 —I

INH 99 97 L I GND

V

LCD

092 90 — O Open

V

LCD

193 91 — I Open

V

LCD

294 92 — I Open

V

LCD

395 93 — I Open

V

LCD

496 94 — I GND

V

DD

90 88 —— —

V

LCD

91 89 —— —

V

SS

97 95 Power supply connection. Connect to ground. — — —

Pin Functions

Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor at this pin.

Serial data transfer inputs. These pins are connected to the microcontroller. CE :Chip enable CL :Synchronization clock DI :Transfer data

▲

Input that turns the display off and forces the general-purpose output ports low.

• When INH is low (V

SS

)

• Display off S1 to S73 = “L” (V

LCD

4).

S74/COM10, S75/COM9 = “L” (V

LCD

4)

COM1 to COM8 = “L” (V

LCD

4).

• General-purpose output ports P1 to P4 = low (V

SS

)

• When INH is high (V

DD

)

• Display on

• The states of the general-purpose output ports can be set by the PC1 to PC4 control data.

However, serial data can be transferred when the INH pin is low.

LCD drive 3/4 bias voltage (middle level) supply pin. This pin can be used to supply the 3/4 (V

LCD

0 – V

LCD

4) voltage level externally.

LCD drive 2/4 bias voltage (middle level) supply pin. This pin can be used to supply the 2/4 (V

LCD

0 – V

LCD

4) voltage level externally.

LCD drive 1/4 bias voltage (middle level) supply pin. This pin can be used to supply the 1/4 (V

LCD

0 – V

LCD

4) voltage level externally.

LCD drive 0/4 bias voltage (low level) supply pin. Fine adjustment of the display contrast can be implemented by connecting an external variable resistor to this pin. However, (V

LCD

0 – V

LCD

4) must be greater than or equal to 4.5 V, and

V

LCD

4 must be in the range 0 V to 1.5 V, inclusive.

Logic block power supply connection. Provide a voltage of between 2.7 and 6.0V.

LCD driver block power supply connection. Provide a voltage of between

7.0 and 11.0 V when the display contrast adjustment circuit is used and provide a voltage of between 4.5 and 11.0 V when the circuit is not used.

LCD drive 4/4 bias voltage (high level) supply pin. The level on this pin can be changed by the display contrast adjustment circuit. However, (V

LCD

0 – V

LCD

4) must be greater than or equal to 4.5 V.

Also,external power must not be applied to this pin since the pin circuit includes the display contrast adjustment circuit.

No. 6473-8/33

LC75878E, 75878W

Serial Data Transfer Format

1. 1/8 duty ① When CL is stopped at the low level

• When the display data is transferred.

• When the control data is transferred.

Note: B0 to B3, A0 to A3

......

CCB address

DD

................................

Direction data

Display

data

120 bits

Fixed

data

5 bits

DD

3 bits

CCB

address

8 bits

CCB

address

8 bits

CCB

address

8 bits

Display

data

120 bits

Fixed

data

5 bits

Fixed

data

5 bits

Display

data

120 bits

DD

3 bits

DD

3 bits

CCB

address

8 bits

CCB

address

8 bits

Display

data

120 bits

Display

data

120 bits

Fixed

data

5 bits

Fixed

data

5 bits

DD

3 bits

DD

3 bits

CCB

address

8 bits

Control

data

13 bits

DD

3 bits

No. 6473-9/33

LC75878E, 75878W

② When CL is stopped at the high level

• When the display data is transferred.

Note: B0 to B3, A0 to A3

......

CCB address

DD

................................

Direction data

• CCB address: ....4BH

• D1 to D600: ........ Display data

• PC1 to PC4: ........ General-purpose output port state setting data

• CT0 to CT3, CTC: Display contrast setting data

• SC: ...................... Segment on/off control data

• BU: ...................... Normal mode/power saving mode control data

• DT1, DT2:............ Display technique setting data

• When the control data is transferred.

CCB

address

8 bits

Display

data

120 bits

Fixed

data

5 bits

DD

3 bits

Control

data

13 bits

CCB

address

8 bits

CCB

address

8 bits

CCB

address

8 bits

CCB

address

8 bits

Display

data

120 bits

Display

data

120 bits

Display

data

120 bits

Display

data

120 bits

Fixed

data

5 bits

Fixed

data

5 bits

Fixed

data

5 bits

Fixed

data

5 bits

DD

3 bits

DD

3 bits

DD

3 bits

DD

3 bits

CCB

address

8 bits

DD

3 bits

No. 6473-10/33

LC75878E, 75878W

2. 1/9 duty ① When CL is stopped at the low level

• When the display data is transferred.

• When the control data is transferred.

Note: B0 to B3, A0 to A3

......

CCB address

DD

................................

Direction data

Control

data

13 bits

CCB

address

8 bits

Display

data

135 bits

Fixed

data

6 bits

DD

3 bits

CCB

address

8 bits

CCB

address

8 bits

CCB

address

8 bits

CCB

address

8 bits

Display

data

135 bits

Display

data

135 bits

Display

data

135 bits

Display

data

126 bits

Fixed

data

6 bits

Fixed

data

6 bits

Fixed

data

6 bits

Fixed

data

15 bits

DD

3 bits

DD

3 bits

DD

3 bits

DD

3 bits

DD

3 bits

CCB

address

8 bits