HT1625 Datasheet, PDF (1/17 Pages) Holtek Semiconductor Inc – RAM Mapping 64x 8 LCD Controller for I/O C

HT1625
RAM Mapping 64´8 LCD Controller for I/O mC
Features
· Operating voltage: 2.7V~5.2V
· Built-in RC oscillator
· External 32.768kHz crystal or 32kHz
frequency source input
· 1/4 bias, 1/8 duty, frame frequency is 64Hz
· Max. 64´8 patterns, 8 commons, 64 segments
· Built-in internal resistor type bias generator
· 3-wire serial interface
· 8 kinds of time base/WDT selection
· Time base or WDT overflow output
· Built-in LCD display RAM
· R/W address auto increment
· Two selectable buzzer frequencies
(2kHz/4kHz)
· Power down command reduces power
consumption
· Software configuration feature
· Data mode and Command mode instructions
· Three data accessing modes
· VLCD pin to adjust LCD operating voltage
· Cascade application
General Description
HT1625 is a peripheral device specially de-
signed for I/O type mC used to expand the dis-
play capability. The max. display segment of
the device are 512 patterns (64´8). It also sup-
ports serial interface, buzzer sound, Watchdog
Timer or time base timer functions. The
HT1625 is a memory mapping and
multi-function LCD controller. The software
configuration feature of the HT1625 make it
suitable for multiple LCD applications includ-
ing LCD modules and display subsystems. Only
three lines are required for the interface be-
tween the host controller and the HT1625. The
HT162X series have many kinds of products
that match various applications.
Selection Table
HT162X HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 HT1627 HT16270
COM
4
4
8
8
8
8
16
16
16
SEG
32
32
32
32
48
64
48
64
64
Built-in Osc.
Ö
Ö
Ö
Ö
Ö
Ö
Crystal Osc. Ö
Ö
Ö
Ö
Ö
Ö
Ö
1
April 21, 2000