-
Description
The uPD765A/B is an LSI floppy disk controller (FDC) chip which contains the circuitry and control functions for interfacing a processor to 4 floppy disk drives. It is capable of either IBM 3740 single density format (FM), or IBM System 34 double density format (MFM) including double-sided recording. The uPD765A/B provides control signals which simplify the design of an external phase-locked loop and write precompensation circuitry. The FDC simplifies and handles most of the burdens associated with implementing a floppy disk interface.
Specifications and features
Address mark detection circuitry is internal to the FDC which simplifies the phase-locked loop and read electronics. The track stepping rate, head load time, and head unload time are user-programmable. The uPD765A/uPD765B offers additional features such as multi-track and multi-side read and write commands and single and double density capabilities.
- FM, MFM Control
- Variable recording length: 128, 256, .8192 bytes/sector
- IBM-compatible format (single- and double-sided, single- and double-density)
- Multi-sector and multi-track transfer capability
- Drive up to 4 floppy or micro floppydisk drives
- Data scan capability - will scan a single sector or an entire cylinder comparing byte-for-byte host memory and disk data
- Data transfers in DMA or non-DMA mode
- Parallel seek operations on up to four drives
- Compatible with uPD8080/85, uPD8086/88, V-series and uPD780 microprocessors
- Single-phase clock: 8 MHz maximum, 3 + 5V only
Application Scenarios
This electronic component model can be used in various applications, including but not limited to:
- Floppy disk drive systems
- Embedded systems
- Data storage and retrieval systems
Comparison
Advantages:
- Supports both single and double density formats
- Offers multi-track and multi-side read and write commands
- Compatible with various microprocessors
- Allows for parallel seek operations on multiple drives
Disadvantages:
- Requires an external phase-locked loop and write precompensation circuitry
- Limited to 4 floppy or micro floppy disk drives
- Operates on a single-phase clock with a maximum frequency of 8 MHz
- Only works with 3 + 5V power supply
-
Similar parts: 430483 , Click to view
-
Datasheet
-
Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
- View more
Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
- View more
-
Popular parts of the same kind
- Datasheet: Download UPD74HC4538G-T2
- Chipdatas Part: CD94-UPD74HC4538G-T2
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/14 04:44 +0800
-
- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
-
E-STLC2500CTR - Brand New STMicroelectronics IC ChipsWFBGA -
CY7C68053A-56BA - Brand New Cypress Semiconductor IC ChipsBGA -
AR8035-AL1A-R - Brand New QCA IC ChipsBGA -
BL1117-ADC - Brand New Belling IC ChipsSOT-223 -
HM628512BLFP-7 - Brand New Nexperia IC ChipsSOP-32 -
BCM5325FKQMG - Brand New Broadcom IC ChipsQFP -
D431000AGW-70LL - Brand New NEC IC ChipsSOP -
HT46R003B - Brand New HOLTEK IC ChipsSOP-16 -
BCM2045KWBG - Brand New Broadcom IC ChipsBGA -
H26M52103FMR - Brand New Skhynix IC ChipsBGA
-
The fee is charged according to the rule of PayPal.
-
The fee is charged according to the rule of PayPal.
-
Western Union charge US$0.00 banking fee.
-
We recommend to use bank transfer for large orders to save on handling fees.
-
DHL(www.dhl.com)
$40 limited time offer. -
UPS(www.ups.com)
$40 limited time offer. -
FedEx(www.fedex.com)
$40 limited time offer. -
Registered Mail(www.singpost.com)
Free shipping without minimum order.
