HT1629G Datasheet, PDF (1/23 Pages) Holtek Semiconductor Inc – 240×2 RAM Mapping LCD Driver

HT1629G
240×2 RAM Mapping LCD Driver
Feature
• Logic operating voltage: 2.4V~5.5V
• LCD operating voltage: 2.4V~5.5V
• LCD display: Max. 240 Segments and 2 Commons
• LCD display data RAM: 60×8 bits=480 bits
• Duty: static, 1/2; Bias: 1/1, 1/2
• External VLCD pin to supply LCD operating voltage
• Internal 51.2kHz RC oscillator
• 4-Chanel LED driver
• Supports up to 16 level PWM luminance control
• SPI 3-wire serial interface
• Package type: COG – 60μm min.
General Description
The HT1629G is a memory mapping and multi-
function LCD controller driver which can be switched
to either 1/1 or 1/2 duty. It can display up to 240
patterns with a 1/1 duty or 480 patterns with a 1/2
duty driver output. It supports a common driver
output mode segment / LED driver. The software
configuration features of the device makes it suitable
for multiple LCD applications including LCD
modules and display subsystems.
The HT1629G is compatible with most micro-
controllers and communicates via a three-line SPI
interface.
Block Diagram
VDD
VSS
CSB
CLK
DIO
I/F
DS
CLS
OSC
Control
Circuit
8
Oscillator
PWM
Control
Display
RAM
Timing
Generator
VLCD
VCAP
LCD
Voltage
Selector
LED driver
SEG driver
COM driver
LED3
LED0
SEG239
SEG0
COM1
COM0
Rev. 1.00
1
November 11, 2016