CompactFlash uses a 50-Pin connector [2 rows of 25 pins]. The 50-pin
connector is on 50-mil centers [1.27mm].
Pins 1 to 25 are located on the
row near the key, and pins 26 to 50 are located in the row above that.
Active low signal use a '-' prefix. The CompactFlash card operates in one
of three modes. The function of some of the pins change with each mode.
The three modes are PC Card ATA using I/O mode, PC Card ATA using Memory
mode, and True IDE mode compatible with most IDE drives. This page lists
the PC Card Memory Module pinout. Refer to these pages for additional pin
out styles of CompactFlash.
PC Card I/O Mode
Pinout
True IDE Mode Pinout
The main CompactFlash page
| Pin # | Signal Function | Pin Type | In, Out Type |
| 1 | GND | - | Ground |
| 2 | D03 | I/O | I1Z, 0Z3 |
| 3 | D04 | I/O | I1Z, 0Z3 |
| 4 | D04 | I/O | I1Z, 0Z3 |
| 5 | D06 | I/O | I1Z, 0Z3 |
| 6 | D07 | I/O | I1Z, 0Z3 |
| 7 | -CE1 | I | I3U |
| 8 | A10 | I | I1Z |
| 9 | -OE | I | I3U |
| 10 | A09 | I | I1Z |
| 11 | A08 | I | I1Z |
| 12 | A07 | I | I1Z |
| 13 | Vcc | - | Power |
| 14 | A06 | I | I1Z |
| 15 | A05 | I | I1Z |
| 16 | A04 | I | I1Z |
| 17 | A03 | I | I1Z |
| 18 | A02 | I | I1Z |
| 19 | A01 | I | I1Z |
| 20 | A00 | I | I1Z |
| 21 | D00 | I/O | I1Z, OZ3 |
| 22 | D01 | I/O | I1Z, OZ3 |
| 23 | D02 | I/O | I1Z, OZ3 |
| 24 | WP | O | OT3 |
| 25 | -CD2 | O | Ground |
| 26 | -CD1 | O | Ground |
| 27 | D11 | I/O | I1Z, OZ3 |
| 28 | D12 | I/O | I1Z, OZ3 |
| 29 | D13 | I/O | I1Z, OZ3 |
| 30 | D14 | I/O | I1Z, OZ3 |
| 31 | D15 | I/O | I1Z, OZ3 |
| 32 | -CE2 | I | I3U |
| 33 | -VS1 | O | Ground |
| 34 | -IORD | I | I3U |
| 35 | -IOWR | I | I3U |
| 36 | -WE | I | I3U |
| 37 | Ready | O | OT1 |
| 38 | Vcc | - | Power |
| 39 | -CSEL | I | I2Z |
| 40 | -VS2 | O | Open |
| 41 | RESET | I | I2Z |
| 42 | -WAIT | O | OT1 |
| 43 | -INPACK | O | OT1 |
| 44 | -REG | I | I3U |
| 45 | BVD2 | O | OT1 |
| 46 | BVD1 | O | OT1 |
| 47 | DO8 | I/O | I1Z, OZ3 |
| 48 | DO9 | I/O | I1Z, OZ3 |
| 49 | D10 | I/O | I1Z, OZ3 |
| 50 | GND | - | Ground |
Engineering Design Key words: CompactFlash, CF, CF+, pinout, Pin out Personal Computer Memory Card International Association, PC Card, Interconnect, Electrical layer, Interface Standard Data Bus, Standard, Specification, Spec, Interface, IC, Physical Interface, Description, Manufacturer, Personal Computer, PC, Pin-out, Connector Pins
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