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HT1621B-48SSOP Datasheet

  • HT1621B-48SSOP

  • LCD DISPLAY DRIVER|32-SEG|4-BP|CMOS|SSOP|48PIN|PLASTIC

  • 20頁

  • ETC

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HT1621
RAM Mapping 32麓4 LCD Controller for I/O
mC
Features
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Operating voltage : 2.4V~5.2V
Built-in 256kHz RC oscillator
External 32.768kHz crystal or 256kHz
frequency source input
Selection of 1/2 or 1/3 bias, and selection of
1/2 or 1/3 or 1/4 duty LCD applications
Internal time base frequency sources
Two selectable buzzer frequencies
(2kHz/4kHz)
Power down command reduces power
consumption
Built-in time base generator and WDT
Time base or WDT overflow output
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8 kinds of time base/WDT clock sources
32麓4 LCD driver
Built-in 32麓4 bit display RAM
3-wire serial interface
Internal LCD driving frequency source
Software configuration feature
Data mode and command mode
instructions
R/W address auto increment
Three data accessing modes
VLCD pin for adjusting LCD operating
voltage
General Description
The HT1621 is a 128 pattern (32麓4), memory
mapping, and multi-function LCD driver. The
S/W configuration feature of the HT1621
makes it suitable for multiple LCD applica-
tions including LCD modules and display sub-
systems. Only three or four lines are required
for the interface between the host controller
and the HT1621. The HT1621 contains a power
down command to reduce power consumption.
Selection Table
HT162X
COM
SEG
Built-in Osc.
Crystal Osc.
脰
HT1620
4
32
HT1621
4
32
脰
脰
HT1622
8
32
脰
脰
HT16220
8
32
HT1623
8
48
脰
脰
HT1625
8
64
脰
脰
HT1626
16
48
脰
脰
1
January 10, 2001

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