HT1628 Datasheet, PDF (1/17 Pages) Holtek Semiconductor Inc – RAM Mapping 116×2 LCD Driver

HT1628
RAM Mapping 116×2 LCD Driver
Features
• Logic voltage: 2.4V~5.5V
• LCD operating voltage (VLCD): 2.4V~5.5V
• LCD display: 2 commons, 116 segments
• Support a maximum of 58×4 bit Display RAM
• Duty: Static, 1/2; Bias: 1/1, 1/2
• Internal resistor type bias generator
• Internal RC oscillator
• Software configuration features
• R/W address auto increment
• Data mode and Command mode instructions
• Three data accessing modes
• Power down command reduces power consumption
• 4-wire serial interface
• Package type: 128-pin LQFP
General Description
The HT1628 is a memory mapping and multi-function
LCD controller driver which can operate with 1/1 or
1/2 duty. It can display up to 116 patterns with 1/1
duty or 232 patterns with 1/2 duty driver output. The
S/W configuration features of the HT1628 makes it
suitable for multiple LCD applications including LCD
modules and display subsystems. Only three or four
lines are required for the interface between the host
controller and the device.
Block Diagram
VDD
VSS
CSB
WRB
RDB
DATA
I/F
DS
TEST
VLCD
VCAP
Control
Circuit
Oscillator
Display
RAM
Timing
Generator
LCD
Voltage
Selector
SEG driver
COM driver
SEG115
SEG0
COM1
COM0
Rev. 1.00
1
December 20, 2016