
Motherboard
MicroLind-Developers/microlind-hw
Hardware repository for the microlind project

Project LogicSpark-09, an old CPU but a favorite
PCB - CPU V1 is an open-source printed circuit board by FredericSegard, from the FredericSegard/6309-Unleashed repository on GitHub. It is a 2-layer board of 252.7 × 106.7 mm with 97 parts on 220 nets, routed with 4,605 tracks and 347 vias.
It is built around the ATF22V10C-7PX, MAX232N and 74HCT245, with the 74HCT257D, 74HCT273D and 74HCT373D among its other parts. Its parts include 44 capacitors, 29 ICs, 7 resistors, 5 diodes and 4 connectors. It belongs with the FPGA and CPLD boards of this library.
Project LogicSpark-09, an old CPU but a favorite.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 39 | 1µF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24 +23 |
| 4 | 10µF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C6, C7, C8, C9 |
| 4 | AS6C4008 | Package_DIP:DIP-32_W15.24mm_Socket | U5, U6, U7, U8 |
| 4 | ATF22V10C | Package_DIP:DIP-24_W7.62mm_Socket | U10, U11, U14, U29 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R6 |
| 2 | 3K3 | Resistor_THT:R_Array_SIP9 | RN2, RN3 |
| 2 | 3K3 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R4 |
| 2 | 74HCT257 | Package_DIP:DIP-16_W7.62mm_Socket | U23, U27 |
| 2 | 74HCT273 | Package_DIP:DIP-20_W7.62mm_Socket | U20, U25 |
| 2 | 74HCT373 | Package_DIP:DIP-20_W7.62mm_Socket | U21, U26 |
| 2 | MAX232 | Package_DIP:DIP-16_W7.62mm_Socket | U16, U18 |
| 2 | R65C51 | Package_DIP:DIP-28_W15.24mm_Socket | U17, U19 |
| 1 | +5V DC | 0_Library:Barrel_Jack_5.5mmODx2.1mmID_PJ-202A | J2 |
| 1 | 1.8432MHz | Oscillator:Oscillator_DIP-8 | X2 |
| 1 | 100µF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 150 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 1 | 16-Bit ISA | 0_Library:BUS_AT v2 | J1 |
| 1 | 16MHz | Oscillator:Oscillator_DIP-8 | X1 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | 3K3 | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | 74HCT112 | Package_DIP:DIP-16_W7.62mm_Socket | U4 |
| 1 | 74HCT132 | Package_DIP:DIP-14_W7.62mm_Socket | U1 |
| 1 | 74HCT14 | Package_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | 74HCT157 | Package_DIP:DIP-16_W7.62mm_Socket | U22 |
| 1 | 74HCT245 | Package_DIP:DIP-20_W7.62mm_Socket | U28 |
| 1 | 74HCT32 | Package_DIP:DIP-14_W7.62mm_Socket | U13 |
| 1 | 74HCT573 | Package_DIP:DIP-20_W7.62mm_Socket | U15 |
| 1 | 74HCT74 | Package_DIP:DIP-14_W7.62mm_Socket | U3 |
| 1 | COM1: DCE | Connector_Dsub:DSUB-9_Female_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J3 |
| 1 | COM2: DTE | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mm | J4 |
| 1 | DS1813 | Package_TO_SOT_THT:TO-92L_Inline_Wide | RS1 |
| 1 | HD6309E | Package_DIP:DIP-40_W15.24mm_Socket | U9 |
| 1 | HM62256 | Package_DIP:DIP-28_W15.24mm_Socket | U24 |
| 1 | MMU | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D5 |
| 1 | POWER | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D1 |
| 1 | POWER | 0_Library:Microswitch_4.7mm_spacing | SW1 |
| 1 | RESET | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D2 |
| 1 | RESET | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW2 |
| 1 | SST39SF010 | Package_DIP:DIP-32_W15.24mm_Socket | U12 |
| 1 | ~{HALT} | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D4 |
| 1 | ~{IRQ} | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D3 |
It measures 252.7 × 106.7 mm and has 2 copper layers, 1.6 mm thick.
97 parts, built around the ATF22V10C-7PX, MAX232N, 74HCT245 and 74HCT257D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the FredericSegard/6309-Unleashed repository on GitHub, at the commit this page was made from: the board is PCB - CPU V1/PCB - CPU V1.kicad_pcb and its schematic Ep2 - Power, reset, clock and nop test/Ep2 - Power, reset, clock and nop test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask FredericSegard before reusing the design.

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