fd235hfc Specifications

 

The following table provides a description of the hardware specifications for the 3.5" floppy disk drive models FD235HFCxxx.

 

Model Name:

C240

C291

C429

C529

Status:

Current

Current

Current

Current

Front Bezel:

Dark Beige (AT)

Light Beige (PS2)

Black

Black

Front Shutter:

Dark Beige (AT)

Light Beige (PS2)

Black

Black

Eject Button:

Dark Beige (AT)

Light Beige (PS2)

Black

Black

LED Indicator:

Green

Interface Connector:

34-pin connector right-angled header connector

Operation Mode Write / Read:

2MB mode

1MB mode

Disk Used
(90mm / 3.5"):

High density (2HD)

Normal density (2DD)

Data Transfer Rate:

500kbps

250kbps

Rotational Speed:

300rpm

300rpm

Unformatted Data Capacity:

2MB

1MB

Track Density:

5.3 track/mm (135tpi)

Track to Track Time:

3ms

Required Power:

+5V single (4.5 - 5.5V)

Signal Output Driver:

Open Collector TTL

Input signal Pull-up:

1K Ohm ±5%, unremovable

Function Setting at Delivery for C240, C291, and C429:

Interface Setting:

  1. Pin12: Drive Select 1 input

  2. Pin34: Disk Change Output

Other Function Setting:

  1. Automatic density setting for 2DD (1MB) disk or 2HD (2MB) disk

  2. LED Turn-on Condition: DRIVE SELECT

  3. Motor Rotating Condition: MOTOR ON

  4. Ready and seek-complete gate (full-mask) for INDEX and READ DATA output pulses

  5. Auto-chucking at disk installation

  6. Auto-recalibration at power on

  7. Frame is electrically shorted to DC 0V

Function Setting at Delivery for C529 only:

view jumper configuration (factory default)

Strap Setting:

  1. DS1: Drive Select 1 on pin 12

  2. DC34: Disk Change on pin 34

  3. HA: Automatic Density Setting for 2DD (1MB) disk or 2HD (2MB) disk    

  4. FG: Frame is electrically shorted to DC 0V

Other Interface Settings:

  1. Pin2: Open

Other Function Settings:   

  1. LED Turn on Condition: DRIVE SELECT

  2. Motor Rotating Condition: MOTOR ON

  3. Ready and seek-complete gate  (full-mask) for INDEX and READ DATA output pulses

  4. Auto-chucking at disk installation

  5. Auto-recalibration at power on

Dimensions:

101.6 W X 25.4 H X 145 D mm

Weight:

410g

Mounting:

Vertical/horizontal with spindle motor down

MTBF:

30,000 POH

Safety Standards:

UL, CSA, TUV