HT812D0

Features: ` Operating voltage: 2.4V~5.0V` Directly drives an external transistor` Low standby current (1mA Typ. for VDD=3V)` Minimal external components` 124 words table ROM for key functions` Programmable silence length and end-pulse width (minimal end-pulse width is 330ms at a 6kHz sampling rate...

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SeekIC No. : 004367020 Detail

HT812D0: Features: ` Operating voltage: 2.4V~5.0V` Directly drives an external transistor` Low standby current (1mA Typ. for VDD=3V)` Minimal external components` 124 words table ROM for key functions` Progr...

floor Price/Ceiling Price

Part Number:
HT812D0
Supply Ability:
5000

Price Break

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

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Upload time: 2024/3/27

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Product Details

Description



Features:

` Operating voltage: 2.4V~5.0V
` Directly drives an external transistor
` Low standby current (1mA Typ. for VDD=3V)
` Minimal external components
` 124 words table ROM for key functions
` Programmable silence length and end-pulse width (minimal end-pulse width is 330ms at a 6kHz sampling rate)
` 2.8-second voice capacity
` Controllable volume
` FLAG1 options:
End-pulse output
3Hz flash
6Hz flash
Voice output indication
Busy output
` FLAG2 options:
3Hz flash
6Hz flash
Busy output
` Four keys
` Key options:
Stop key: KEY4
Random (only for KEY1)
Sequential (only for KEY1)
Repeat (for all KEYs, under retriggerable condition)
Key debounce time (for all KEYs): 700ms, 22ms, 45ms, 180ms (based on a sampling rate of approximately 6kHz)
One shot (for all KEYs)
Level-trigger
Pull-high resistance (for all KEYs)
` Section options:
Retriggerable
Non-retriggerable



Application

· Toys
· Alarm clocks
· Public address system
· Alert & warning system
· Sound effect generators



Specifications

Supply Voltage ...............................0.3V to 6V
Input Voltage .............. VSS0.3V to VDD+0.3V
Storage Temperature ...............50 to 125
Operating Temperature ............. 20 to 70

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.




Description

The HT812D0 is a single chip LOG-PCM voice synthesizer LSI with 2.8-second voice capacity at 6kHz sampling rate. The chip when triggered drives a speaker through an external transistor with a current switch D/A converter output. Negligible current will be consumed in the standby state.

The HT812D0 provides four key inputs and two programmable FLAG outputs. With a 2.4V~5.0V power supply, a complete synthesized voice playback system can be easily built with very few external components.

The customer's voice sources are recorded section by section into an internal mask ROM. The sectional playback arrangement instructions of each key are stored in the table ROM. The key features are also programmable. With such a flexible structure, the HT812D0 is excellent for versatile voice applications.

 




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