SIMM 72 pin 256K-512K-1M-4M-8M-16M------------------------------------- | [ ] [ ] [ ] [ ] [ ] [ ] | \O [ ] [ ] [ ] _ [ ] [ ] [ ] O| |_|||||||||||||||/ \|||||||||||||||__| 1............36 37...........72
PIN SIGNAL PIN SIGNAL PIN SIGNAL
1......Gnd 25......DQ22 49......DQ8 2......DQ0 26......DQ7 50......DQ24 3......DQ16 27......DQ23 51......DQ9 4......DQ1 28......A7 52......DQ25 5......DQ17 29......N/C 53......DQ10 6......DQ2 30......+Vcc 54......DQ26 7......DQ18 31......A8 55......DQ11 8......DQ3 32......A9 56......DQ27 9......DQ19 33......RAS3 57......DQ12 10......+Vcc 34......RAS2 58......DQ28 11......N/C 35......MP2 59......+Vcc 12......A0 36......MP0 60......DQ29 13......A1 37......MP1 61......DQ13 14......A2 38......MP3 62......DQ30 15......A3 39......Gnd 63......DQ14 16......A4 40......CAS0 64......DQ31 17......A5 41......CAS2 65......DQ15 18......A6 42......CAS3 66......N/C 19......A10 43......CAS1 67......PD1 20......DQ4 44......RAS0 68......PD2 21......DQ20 45......RAS1 69......PD3 22......DQ5 46......N/C 70......PD4 23......DQ21 47......WE 71......N/C 24......DQ6 48......N/C 72......Gnd
Note: All pins on both sides are similar. Pins 35, 36, 37 & 38 are not used in all 32 bit SIMMs. Pins 33 & 45 are not used in 256K, 1MB & 4MB SIMMs. Pin 32 is not used in 256K & 512K SIMMs. Pin 19 is not used in 256K, 512K, 1MB & 4MB SIMMs.
