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HT9302B

Manufacturer: HOLTEK

1-Memory/2-Memory Tone/Pulse Dialer
Partnumber Manufacturer Quantity Availability
HT9302B HOLTEK 313 In Stock

Description and Introduction

1-Memory/2-Memory Tone/Pulse Dialer The part HT9302B is manufactured by Holtek Semiconductor. It is a low-power, high-performance 8-bit microcontroller with integrated LCD driver capabilities. Key specifications include:

- **Core**: 8-bit
- **Operating Voltage**: 2.2V to 5.5V
- **Program Memory**: 4KB OTP (One-Time Programmable)
- **RAM**: 224 bytes
- **LCD Driver**: Supports up to 4x32 segments
- **Clock Speed**: Up to 8MHz (external crystal) or 4MHz (internal RC oscillator)
- **I/O Ports**: 8 bidirectional I/O pins
- **Timers**: 8-bit timer with prescaler
- **Power Consumption**: Low-power modes available (HALT and GREEN modes)
- **Package Options**: 28-pin SOP/SSOP

For exact technical details, always refer to the official Holtek datasheet.

Application Scenarios & Design Considerations

1-Memory/2-Memory Tone/Pulse Dialer

Alternative Part Number

  • LM358 --: Dual operational amplifier with similar general-purpose functionality and widely available as a drop-in style replacement in many circuits.
  • NE5532 --: Low-noise dual op-amp that can substitute in audio and signal-conditioning applications where the HT9302B is used.
  • TL072 --: JFET-input dual op-amp offering comparable performance for general analog signal processing designs.
  • HT9302 --: Same Holtek HT9302 series base device without the B variant suffix; functionally equivalent tone/voice IC with matching pinout and typically interchangeable in most designs.
  • HT9301 --: Sister part in the Holtek HT930x tone generator family, offering similar functionality and package options; suitable when minor feature differences are acceptable.
  • HT9303 --: Another member of the same Holtek HT930x series with comparable electrical characteristics and pin compatibility, usable as a drop-in substitute after verifying the tone table.

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