8/12/2019 PowertipAlphanumericDisplays_ContrastControl_InstructionSet

1/1

EXAMPLE OF POWER SUPPLY

Normal Temperature Type

14 13 12 3 2 1

Vss

Vcc

Vo

VR

VR : 10k 20 k

+5V

GND

Extended Temperature Type

14 13 3 2 1

Vss

Vcc

Vo

+5V

GND

-7V

Examples of Temperature Compensation Circuits for Extended Temp. (Only for reference)

R th

R s

R m

Vcc

Vz

Fig.1

Module

Thermistor: Rth[25oC]= 15[k-ohm], B=4200(K)Resistors: Rp=30[K-ohm], Rs=6.8[k-ohm], Rm=3.3[k-ohm]Transistor: PNP TypeVcc: +5V , Vss: 0V [Logic Supply]Vz: -8[V] (-7.8 to -8.2[V])Vee