Document
Ordering number : ENA1976
LC75809PT
CMOS IC
1/4 and 1/3-Duty General-Purpose LCD Display Driver
http://onsemi.com
Overview
The LC75809PT is the 1/4 duty and 1/3 duty general-purpose microprocessor-controlled LCD driver that can be used in applications such as frequency display in products with electronic tuning. In addition to being able to drive up to 352 segments directly, the LC75809PT can also control up to 12 general-purpose output ports. Because it has the PWM output of a maximum of 6ch, the brightness control of the LED backlight of RGB×2 can be done. Incorporation of an oscillation circuit helps to reduce the number of external resistors and capacitors required.
Features
• Support for 1/4-duty 1/3-bias or 1/3-duty 1/3-bias drive techniques under serial data control. When 1/4-duty : Capable of driving up to 352 segments When 1/3-duty : Capable of driving up to 267 segments
• Serial data input supports CCB format communication with the system controller. (Support 3.3V and 5V operation) • Serial data control of the power-saving mode based backup function and the all segments forced off function. • Serial data control of switching between the segment output port and general-purpose output port function.
(Support for up to 12 general-purpose output ports) • Support for the PWM output function of a maximum of 6ch. (It can output from the general-purpose output port). • Support for clock output function of 1ch. (It can output from the general-purpose output port). • Serial data control of the frame frequency of the common and segment output waveforms. • Serial data control of switching between the internal oscillator operating mode and external clock operating mode. • High generality, since display data is displayed directly without the intervention of a decoder circuit. • Built-in display contrast adjustment circuit. • The INH pin allows the display to be forced to the off state. • Incorporation of an oscillator circuit. (Incorporation of resistor and capacitor for an oscillation)
• CCB is ON Semiconductor® ’s original format. All addresses are managed by ON Semiconductor® for this format.
• CCB is a registered trademark of Semiconductor Components Industries, LLC.
Semiconductor Components Industries, LLC, 2013 July, 2013
11812HKPC 20110826-S00008 No.A1976-1/43
LC75809PT
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0V
Parameter Maximum supply voltage Input voltage
Output voltage Output current
Allowable power dissipation Operating temperature Storage temperature
Symbol
VDD max VIN1 VIN2 VOUT IOUT1 IOUT2 IOUT3
Pd max
Topr
Tstg
Conditions VDD CE, CL, DI, INH OSCI, VDD1, VDD2 S1 to S89, COM1 to COM4, P1 to P12 S1 to S88 COM1 to COM4, S89 P1 to P12 Ta=85°C
Ratings -0.3 to +6.8 -0.3 to +6.8
-0.3 to VDD+0.3 -0.3 to VDD+0.3
300 3 5
200 -40 to +85 -55 to +125
Unit V
V
V μA
mA
mW °C °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended.