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Pinout of the female connector on a CompactFlash card, shown looking into the card.
| Function |
Dir |
Pin |
Dir |
Function
|
| Comm. Mem. |
I/O |
True IDE |
Comm. Mem. |
I/O |
True IDE
|
| GND |
N/A |
1 |
26 |
OUT |
CD1
|
| D03 |
BI |
2 |
27 |
BI |
D11
|
| D04 |
BI |
3 |
28 |
BI |
D12
|
| D05 |
BI |
4 |
29 |
BI |
D13
|
| D06 |
BI |
5 |
30 |
BI |
D14
|
| D07 |
BI |
6 |
31 |
BI |
D15
|
| CE1 |
CS0 |
IN |
7 |
32 |
IN |
CE2 |
CS1
|
| A10 |
L |
IN |
8 |
33 |
OUT |
VS1
|
| OE |
ATA SEL |
IN |
9 |
34 |
IN |
NU |
IORD
|
| A09 |
L |
IN |
10 |
35 |
IN |
NU |
IOWR
|
| A08 |
L |
IN |
11 |
36 |
IN |
WE
|
| A07 |
L |
IN |
12 |
37 |
OUT |
READY |
IREQ |
INTRQ
|
| VCC |
N/A |
13 |
38 |
N/A |
VCC
|
| A06 |
L |
IN |
14 |
39 |
IN |
CSEL
|
| A05 |
L |
IN |
15 |
40 |
IN |
VS2
|
| A04 |
L |
IN |
16 |
41 |
IN |
RESET |
RESET
|
| A03 |
L |
IN |
17 |
42 |
OUT |
WAIT |
IORDY
|
| A02 |
IN |
18 |
43 |
OUT |
NU |
INPACK |
NC
|
| A01 |
IN |
19 |
44 |
IN |
REG |
HA
|
| A00 |
IN |
20 |
45 |
BI |
BVD2 / H |
SPKR |
DASP
|
| D00 |
BI |
21 |
46 |
BI |
BVD1 / H |
STSCHG |
PDIAG
|
| D01 |
BI |
22 |
47 |
BI |
D08
|
| D02 |
BI |
23 |
48 |
BI |
D09
|
| WP |
IOS16 |
IOCS16 |
IN |
24 |
49 |
BI |
D10
|
| CD2 |
OUT |
25 |
50 |
N/A |
GND
|
- GND Ground reference voltage
- VCC Positive power rail. This can be either 3.3V or 5V.
- D[15:0] Birdirectional data bus
- A[10:0] Address bus
- CD1, CD2 Card detect signals. These go low when a card is inserted into a socket.
