SF68
scefrom
A board featuring the Motorola 68000
Components (47)
| Reference | Value | Description |
|---|---|---|
| Q2 | NPN | Bipolar transistor symbol for simulation only, substrate tied to the emitter |
| U1,U2,U6,U7,U20,U26 | 74HC541 | |
| U3-U5 | 74HC245,74HC688 | 8-bit magnitude comparator |
| U6,U19,U21,U29 | 74HC32 | Quad 2-input OR |
| U8 | 74HC245 | |
| U9 | AS7C164A | |
| U9,U10 | 28C256,AS7C164A | Paged Parallel EEPROM 256Kb (32K x 8), DIP-28/SOIC-28 |
| U11 | 68HC000P10 | |
| U13 | 74HC157 | |
| U14 | 74HC74 | |
| U17,U23 | 74HC04 | Hex Inverter |
| U22 | 74HC05,74HC08 | Quad And2 |
| U25 | 74HC273 | 8-bit D Flip-Flop, reset |
| U26,U27 | 74HC14,74HC541 | 8-bit Buffer/Line Driver 3-state outputs,Hex inverter schmitt trigger |
| U28,U31 | 74HC08 | Quad And2 |
| U30 | 74HC139 | Dual Decoder 1 of 4, Active low outputs |
| C3 | 100nF | |
| C4 | 100uF,220pF | Unpolarized capacitor |
| C5-C7 | 22pF | Unpolarized capacitor |
| C9-C11 | 10uF | |
| D1 | LED_Filled | |
| J1 | ramslot2 | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | ramslot3 | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3 | ramslot4 | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J4 | perslot1a | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J5 | ramslot1 | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J6 | perslot2a | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J7 | perslot2b | Generic connector, double row, 02x15, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J8 | perslot3a | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J9 | perslot4a | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J10 | perslot3b | Generic connector, double row, 02x15, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J11 | perslot4b | Generic connector, double row, 02x15, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J12 | perslot5a | Generic connector, double row, 02x30, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J13 | perslot5b | Generic connector, double row, 02x15, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| J14 | pwrjack | |
| J16 | stprobe | |
| J17 | perslot1b | Generic connector, double row, 02x15, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| R1,R4,R7,R8,R11,R12 | 10k | Resistor |
| R3,R5,R6,R9,R10,R13-R15,R21 | 4k7 | Resistor |
| R9,R10 | 2k | Resistor |
| R16 | 14k7 | |
| R17,R20 | 1k | |
| RV1 | 5k | |
| SW1 | pwrsw | Switch, single pole double throw |
| SW2 | ressw | Push button switch, generic, two pins |
| SW3 | timersw | |
| X1 | CXO_DIP8 |