I have a picutre:Note this also interfaces with a spi ram chip I am using 2 chip select pins (one for sd card and one for ram chip) to select ram chip or sd card.
and an extremely hard to follow drawing
Sd card to arudiono
I am using the arduino uno r3 it should be the same on all revisions though
________________________________________
| |
| ooooooooooooooooooooooooooooooooooooo |
| o zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz o |
| o z dddddddddddddddddddddddddddddzd o |
| o z d aaaaaaaaaaaaaaaaaaaaaaaaaa zd o |
________|_o_z_d_a_______________________ a zd o |
| F D 3 2 1 0 9 8 7 6 5 4 3 2 1 0 |a zd o |
| E N 1 1 1 1 ~ ~ ~ ~ |a zd o |
| R G ~ ~ X X |a zd o |
| A Digital (PWM~) T R |a zd o |
| Arduino Uno |a zd o |
| |a zd o |
| F T |a zd o |
| E E 3 |a zd o |
| R S . |a zd o |
| 0 E 3 |a zd o |
| I R V |a zd o |
¯¯¯¯¯¯¯¯3¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯a zd o |
3zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzazzd o
aaa3aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa d o |
a C3333333333333333333 ooooooo |
bbabb3bbbb C___________3____________o___d___C
33b33333z bbb|bbbbbbbbbbb3bb o d |
3 b a z yyyy|yyyyyyyyy o d |
_3_b_a___z_y___|________ y 3 b o d |
|1 2 3 4 5 6 7 8 |y 3 b o d |
| HEF4050B |y 3 b o d |
| |y 3 b o d |
|9 10 11 12 13 14 15 16 |y 3 b o d |
¯o¯¯*¯¯¯¯¯¯¯¯¯¯q¯¯d¯¯¯¯¯ y 3 b o d |
o * qqq dddddddYd3dbddddddddddodddd |
yoyy*yyyyyyyyyyyyyyyyyyyyy 3 b o |
yo * q 3 b o |
yooo*oooooooooooooooooooooo3ooooooooooooo |
yy *** 33333333333333333333 b |
ybbbb*b3bbbbbbbbbbbbbbbbbbbbb |
yb * 3 q |(GND is connected to sd pins 3 and 6 that part appears to be slightly diffucult to see)
yb 3*33 q |
ybyC3*C_____q__________________________________|
by|3*|qqqqqq NOTE IMPORTAN READ ME!!!!!!:even though some of the
_by|3*|q_ Wires appear to be connected to another wire because they are touching another wire they are not connected they are overlapping
/912345678| also some wire were they "overlap" appear to be broken they are NOT
| | This is due to 2d limitations to solve this I will write were it is connected by using something like this (Uppercase C)
| | After finishing this I realized alot of wires ended up overlapping C_C
| SD | you may have to look around to find were it goes | |
| | Two wires overlapping
| | AAAAAABAAAAAAA
|_________| B
B
Sd pin notes
9 unused
8 also unused
3 GND1
6 GND2
5 Clock
4 supply power (3.3v)
1 cip dection (goes to pin 10 on arduino)
HEF4050B pin notes:
VDD 1 supply voltage
1Y to 6Y 2, 4, 6, 10, 12, 15 output
1A to 6A 3, 5, 7, 9, 11, 14, input
VSS 8 ground supply voltage
n.c. 13, 16 not connected
Aurduino uno pin notes:
Pin 11 MOSI Master Out Slave In
Pin 12 Master In Slave Out (MISO)
Pin 13 is the Serial Clock
Pin 10 Slave Select pin