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HT1647A

Features: · Operating voltage: 2.7V~5.2V· Built-in 32kHz RC oscillator· External 32.768kHz crystal oscillator or 32kHz frequency source input· Standby current: <1A at 3V, <2A at 5V· Internal resistor type: 1/5 bias or 1/4 bias, 1/16 duty· Two selectable LCD frame frequencies: 89Hz or 170Hz...

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SeekIC No. : 004366595 Detail

HT1647A: Features: · Operating voltage: 2.7V~5.2V· Built-in 32kHz RC oscillator· External 32.768kHz crystal oscillator or 32kHz frequency source input· Standby current: <1A at 3V, <2A at 5V· Internal...

HT1647A Data Sheet

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Part Number:
HT1647A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Operating voltage: 2.7V~5.2V
· Built-in 32kHz RC oscillator
· External 32.768kHz crystal oscillator or 32kHz frequency source input
· Standby current: <1A at 3V, <2A at 5V
· Internal resistor type: 1/5 bias or 1/4 bias, 1/16 duty
· Two selectable LCD frame frequencies: 89Hz or 170Hz
· Max. 6416 patterns, 64 segments and 16 commons
· Built-in bit-map display RAM: 1024 bits (=6416 bits)
· Built-in internal resistor type bias generator
· Six-wire interface (four data wires)
· Eight kinds of time base/WDT selection
· Time base or WDT overflow output
· R/W address auto increment
· Built-in buzzer driver (2kHz/4kHz)
· Power down command reduces power consumption
· Software configuration feature
· Data mode and Command mode instructions
· Three data accessing modes
· Provides VLCD pin to adjust LCD operating voltage
· Provides three kinds of bias current programming
· Control of TN-type, STN-type LCDs and ECB-type LCDs
· 100-pin QFP package and in chip form




Application

· Leisure products
· Games
· Personal digital assistant
· Cellular phone
· Global positioning system
· Consumer electronics




Pinout

Connection Diagram




Specifications

Supply Voltage ...........................VSS-0.3V to VSS+5.5V
Storage Temperature ............................ -50 to 125
Input Voltage.............................VSS-0.3V to VDD+0.3V
Operating Temperature........................... -25 to 75




Description

HT1647A is a peripheral device specially designed for I/O type MCU used to expand the display capability. The max. display segment of the device are 1024 patterns (64 segments and 16 commons). It also supports four data bits interface, buzzer sound, Watchdog Timer or time base timer functions. It is a memory mapping and multi-function LCD controller. Since the HT1647A can control ECB-type (Electrically Controlled Birefringence) LCDs in addition to current TN-type (Twisted Nematic) or STN-type (Super Twisted Nematic) LCDs. The software configuration feature of it make it suitable for multiple LCD applications including LCD modules and display subsystems. Only six lines (CS, WR, DB0~DB3) are required for the interface between the host controller and the it.




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