Practical Electronics/Device pinouts/CompactFlash cards

center|frame|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 D15CE1 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 Key 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.