Practical Electronics/Device pinouts/CompactFlash cards

From Wikibooks, open books for an open world
Jump to: navigation, search
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

Key[edit]

  • 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.