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Description
The W921E400A/W921C400 is a single-chip CMOS 4-bit microcontroller that is a subset of W921E880A/W921C880. It features a 4-bit ALU, three multi-function timers, one channel DTMF generator, a beep tone generator, a serial I/O port, and built-in four by one channel comparator circuit, making it suitable for use as a telephone processor. The W921E400A/W921C400 series can interface with Winbond LCD driver IC using the serial control circuit. Additionally, it has seven interrupt sources and allows for 48-level subroutine nesting for interrupt applications.
Specifications and features
- Single-chip CMOS 4-bit microcontroller
- 4-bit ALU
- Three multi-function timers
- One channel DTMF generator
- Beep tone generator
- Serial I/O port
- Built-in four by one channel comparator circuit
- Serial control circuit for interfacing with Winbond LCD driver IC
- Seven interrupt sources
- 48-level subroutine nesting for interrupt applications
Application Scenarios
The W921E400A/W921C400 microcontroller can be used in various applications, including but not limited to:
- Telephone processors
Comparison
Advantages- Compact size
- Integration of multiple functions
- Compatible with Winbond LCD driver IC
- Supports interrupt applications
Disadvantages- Limited to 4-bit functionality
- May not be suitable for complex applications
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Datasheet
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Additional Information
- Datasheet: Download W921E400
- Chipdatas Part: CD91-W921E400
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
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- Last Updated: 2024/06/14 06:12 +0800
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