CPU09RAM
About the CPU09RAM PCB
CPU09RAM is an open source PCB design by roberto314, published on GitHub. It is a 2-layer board measuring 160 × 100 mm, with 46 components from 22 distinct parts.
Other key parts include the 74HC21, GAL16V8, 74HC245, AS6C4008-55PCN and 74HC139. By type, the board carries 18 ICs, 15 capacitors, 3 jumpers, 3 resistors, 2 battery holders and 2 diodes.
From the project
kees 1948 Uniflex Remake
This is my recreation of the Uniflex RAM Board. It includes two CR2032 Batteries and a MXD1210 RAM Controller. It is mainly SMD.
Main components on the CPU09RAM
CPU09RAM bill of materials (BOM)
46 components, 22 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC21 | SO-14_3.9x8.65mm_P1.27mm | U1 |
| 1 | GAL16V8 | DIP-20_W7.62mm_Socket | U2 |
| 1 | 74HC245 | SOIC-20W_7.5x12.8mm_P1.27mm | U3 |
| 8 | AS6C4008-55PCN | SOP-32_11.305x20.495mm_P1.27mm | U4, U5, U6, U7, U8, U9, U10, U11 |
| 1 | 74HC139 | SOIC-16_3.9x9.9mm_P1.27mm | U12 |
| 2 | 74HC574 | SOP-20_7.5x12.8mm_P1.27mm | U13, U14 |
| 2 | 74HC245 | SOP-20_7.5x12.8mm_P1.27mm | U15, U16 |
| 1 | MXD1210 | SOIC-8_3.9x4.9mm_P1.27mm | U17 |
| 1 | 74HC138 | SOIC-16_3.9x9.9mm_P1.27mm | U18 |
| 1 | BUS | DIN41612_C_2x32_Male_Horizontal_THT | J1 |
| 2 | Battery_Cell | BatteryHolder_Keystone_3002_1x2032 | BT1, BT2 |
| 1 | ? | PinHeader_1x02_P2.54mm_Vertical | JP2 |
| 1 | Don't Touch | PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | Writeprotect | PinHeader_1x02_P2.54mm_Vertical | JP4 |
| 1 | SW_DIP_x08 | DIP-16_W7.62mm_Socket | SW1 |
| 1 | TestPoint | TestPoint_Keystone_5005-5009_Compact | TP1 |
| 1 | BAT42 | D_DO-15_P10.16mm_Horizontal | D1 |
| 1 | RED | LED_D3.0mm | D2 |
| 1 | 10u | CP_EIA-7343-31_Kemet-D_Pad2.25x2.55mm_HandSolder | C1 |
| 14 | 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C3, C4, C5, C6, C7, C8, C9 +6 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4k7 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 2 | 100k | R_Array_SIP9 | RN1, RN2 |
CPU09RAM design files
The KiCad project lives in the roberto314/kees1948_Boards repository on GitHub; these links point at the commit this page was built from.
CPU09RAM: common questions
How big is the CPU09RAM PCB?
The CPU09RAM measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CPU09RAM?
46 components, from 22 distinct parts. The full bill of materials is listed on this page.
Where can I download the CPU09RAM design files?
From the roberto314/kees1948_Boards repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the CPU09RAM design in my own project?
The repository has no license, so all rights stay with roberto314. Use it as a reference, and ask the author before reusing the design.
