1802-Mini-Processor
About the 1802-Mini-Processor PCB
1802-Mini-Processor is an open source PCB design by dmadole, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 64 components from 32 distinct parts.
Other key parts include the LMC555, CDP1802, 40244, 40373 and LO_MEM. By type, the board carries 20 resistors, 10 connectors, 9 ICs, 9 jumpers, 9 diodes and 6 capacitors.
From the project
CDP1802, CDP1804 (A only), CDP1805, or CDP1806 processors 64K of memory in two 32K RAM, EPROM, or EEPROM devices Supports 62C64, 62C256, 27C64, 27C256, 28C64, 28C256 Can temporarily map a ROM at $8000 to $0000 at reset Eight indicator LEDS with selectable polarity for each TTL le
CDP1802, CDP1804 (A only), CDP1805, or CDP1806 processors 64K of memory in two 32K RAM, EPROM, or EEPROM devices Supports 62C64, 62C256, 27C64, 27C256, 28C64, 28C256 Can temporarily map a ROM at $8000 to $0000 at reset Eight indicator LEDS with selectable polarity for each TTL level port with Q and selectable EF pin for soft serial Transmit and receive polarity selectable on serial port Designed for 4 Mhz but can run 8Mhz with suitable processor Stable power-on reset circuit is jumper-selectable Convenient mini-USB connector for 5 volt power input Form factor allows stacking or backplane by…
Main components on the 1802-Mini-Processor
1802-Mini-Processor bill of materials (BOM)
64 components, 32 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMC555 | DIP-8_W7.62mm_Socket | U1 |
| 1 | CDP1802 | DIP-40_W15.24mm_Socket | U2 |
| 1 | 40244 | DIP-20_W7.62mm_Socket | U3 |
| 1 | 40373 | DIP-20_W7.62mm_Socket | U4 |
| 1 | LO_MEM | DIP-28_W15.24mm_Socket | U5 |
| 1 | HI_MEM | DIP-28_W15.24mm_Socket | U6 |
| 1 | 4071 | DIP-14_W7.62mm_Socket | U7 |
| 1 | 4011 | DIP-14_W7.62mm_Socket | U8 |
| 1 | 4049 | DIP-16_W7.62mm_Socket | U9 |
| 1 | CXO-DIP14 | Oscillator_DIP-14 | X1 |
| 4 | Mount | 1pin | J1, J2, J3, J4 |
| 1 | Expansion | Pin_Header_Straight_1x39_Pitch2.54mm | J5 |
| 1 | SLOT_1_CONFIG | Pin_Header_Straight_1x09_Pitch2.54mm | J6 |
| 1 | 56579-0519 | USB_Mini-AB_Molex_56579_0519 | J7 |
| 1 | ClockPort | Pin_Header_Angled_1x05_Pitch2.54mm | J8 |
| 1 | Q_Connector | Pin_Header_Angled_1x05_Pitch2.54mm | J9 |
| 1 | SLOT_2_CONFIG | Pin_Header_Straight_1x09_Pitch2.54mm | J10 |
| 1 | POR | Pin_Header_Straight_1x02_Pitch2.54mm | JP1 |
| 1 | TX_INV | Pin_Header_Straight_1x03_Pitch2.54mm | JP8 |
| 2 | RX_SEL | Pin_Header_Straight_1x03_Pitch2.54mm | JP9, JP16 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RX_INV | Pin_Header_Straight_1x03_Pitch2.54mm | JP10 |
| 1 | RX_IDL | Pin_Header_Straight_1x03_Pitch2.54mm | JP11 |
| 1 | BM_OE | Pin_Header_Straight_1x03_Pitch2.54mm | JP12 |
| 1 | SLOT2_MIR | Pin_Header_Straight_1x03_Pitch2.54mm | JP13 |
| 1 | Q_LED | Pin_Header_Straight_1x03_Pitch2.54mm | JP17 |
| 8 | LED_Small | LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 1 | 4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D9 |
| 5 | 0.1u | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C5, C6, C7 |
| 1 | 10uF | CP_Radial_Tantal_D4.5mm_P2.50mm | C3 |
| 11 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R16 +3 |
| 8 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9, R10, R11, R12, R13, R14, R15 |
| 1 | 470k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
1802-Mini-Processor design files
The KiCad project lives in the dmadole/1802-Mini-Processor repository on GitHub; these links point at the commit this page was built from.
1802-Mini-Processor: common questions
How big is the 1802-Mini-Processor PCB?
The 1802-Mini-Processor measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 1802-Mini-Processor?
64 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the 1802-Mini-Processor design files?
From the dmadole/1802-Mini-Processor repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the 1802-Mini-Processor design in my own project?
The repository has no license, so all rights stay with dmadole. Use it as a reference, and ask the author before reusing the design.