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Description
The uPD74HCT00G-E1 is an IC chip used as a floppy disk controller (FDC). It is designed to interface a processor to four floppy disk drives and supports both IBM 3740 single density format (FM) and IBM System 34 double density format (MFM), including double-sided recording. The uPD74HCT00G-E1 provides control signals that simplify the design of an external phase-locked loop and write precompensation circuitry, making it easier to implement a floppy disk interface.
Specifications and features
- Internal address mark detection circuitry simplifies the phase-locked loop and read electronics
- User-programmable track stepping rate, head load time, and head unload time
- Supports multi-track and multi-side read and write commands
- Offers single and double density capabilities
- Supports variable recording length options: 128, 256, and 8192 bytes per sector
- Compatible with FM and MFM control
- Supports IBM-compatible format for single- and double-sided, single- and double-density disks
- Allows multi-sector and multi-track transfer capability
- Can drive up to four floppy or micro floppy disk drives
- Includes data scan capability to compare byte-for-byte host memory and disk data
- Supports data transfers in DMA or non-DMA mode
- Enables parallel seek operations on up to four drives
- Compatible with uPD8080/85, uPD8086/88, V-series, and uPD780 microprocessors
- Operates on a single-phase clock with a maximum frequency of 8 MHz
- Requires +5V power supplyApplication Scenarios
The uPD74HCT00G-E1 is commonly used in systems or devices that require floppy disk drive interfacing. It is suitable for retro computing enthusiasts, embedded systems, industrial control systems, and any application that demands reliable floppy disk control and data handling.
Comparison
Advantages- Simplifies the design of floppy disk interfaces with integrated circuitry and control functions
- Supports both single and double density formats for flexibility
- Allows for variable recording lengths and multi-sector transfers
- Can drive up to four floppy or micro floppy disk drives simultaneously
- Compatible with various microprocessors for easy integration
- Provides data scan capability for data verification and integrity checks
- Supports DMA and non-DMA data transfers for efficient operation
- Enables parallel seek operations for faster drive accessDisadvantages- Limited to +5V power supply, may not be compatible with systems that require different voltage levels
- Relies on external phase-locked loop and write precompensation circuitry for certain functions -
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Datasheet
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Shopping guide
Delivery period:
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Popular parts of the same kind
- Datasheet: Download UPD74HCT00G-E1
- Chipdatas Part: CD94-UPD74HCT00G-E1
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 06:22 +0800
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