CPU16 Pico2 PowerOnly
About the CPU16 Pico2 PowerOnly PCB
CPU16 Pico2 PowerOnly is an open source PCB design by tendai22, published on GitHub. It is a 2-layer board measuring 99.1 × 99.1 mm, with 27 components from 19 distinct parts.
Other key parts include the Pimoroni PGA2350B, RB2350B_CORE_BOARD, 74HC00 and HM628128. By type, the board carries 6 capacitors, 5 ICs, 5 connectors, 5 diodes, 3 resistors and 2 switches.
It belongs with the retro computing designs in this gallery.
From the project
Retro 16bit CPU driver on Raspberry Pi Pico2(RP2350B)
emuz80pico2 で、Z80を Raspberry Pi Pico2 で駆動する方法のイメージを得た。FORTH 移植活動再開に先立ち、16bit 実CPUをPico2で駆動する試作を進めたい。そのための基板として、CPU16Pico2 の準備を進めている。
16bit CPU を Raspberry Pi Pico2 で駆動する。SRAM 2本(128kワード x 16bit)を搭載し、16bit CPU(以後、ターゲット CPUと呼ぶ)からアクセスできるようにする。シリアルポートは Pico2 が提供する。
Pico2 の GPIO線で CPUクロックと制御信号を発生・受信する。シリアル用の仮想 I/O ポート2つを用意し、ターゲット CPU から R/W できるようにする。
GPIOの割り当てに際し、アドレスバス16本・データバス16本は5V トレラント入力を割り当てている。残り 16本のうち、2本はシリアルポート(TX, RX)に、残り14本のうち5Vトレラント8本は制御線(入力/出力)と、非トレラント6本(出力)の違いを意識している。
Main components on the CPU16 Pico2 PowerOnly
CPU16 Pico2 PowerOnly bill of materials (BOM)
27 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Pimoroni PGA2350B | PLCC-64_THT-Socket | U1 |
| 1 | RB2350B_CORE_BOARD RB2350B_Core_Board | RB2350B_Core_Board | U2 |
| 1 | 74HC00 | DIP-14_W7.62mm_Socket | U3 |
| 2 | HM628128 | DIP-32_W15.24mm_OvalPads | U4, U5 |
| 1 | CONN_02X12_ODD_EVEN Conn_02x12_Odd_Even | PinSocket_2x12_P2.54mm_OvalPad_Vertical | J1 |
| 1 | CONN_02X20_ODD_EVEN Conn_02x20_Odd_Even | PinSocket_2x20_P2.54mm_Ovalpad_Vertical | J2 |
| 1 | Serial | PinHeader_1x06_P2.54mm_Horizontal_NoFeet | J5 |
| 1 | USB_B_Micro | USB_Micro-B_Hirose_ZX62-B-5PA | J6 |
| 1 | CONN_01X05_PIN Conn_01x05_Pin | PinHeader_1x05_P2.54mm_Vertical | J8 |
| 1 | VCC_Jumper | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | RUN | Tact_SW | SW1 |
| 1 | BOOTSEL | Tact_SW | SW2 |
| 2 | 1S3 | D_DO-34_SOD68_P7.62mm_Horizontal | D1, D5 |
| 1 | RED | LED_D3.0mm | D2 |
| 1 | GREEN | LED_D3.0mm | D3 |
| 1 | YELLOW | LED_D3.0mm | D4 |
| 5 | 0.1U 0.1u | C_Disc_Narrow_D3.0mm_W1.6mm_P2.50mm | C1, C2, C3, C4, C5 |
| 1 | 10UF 10uF | CP_Radial_D5.0mm_P2.50mm | C7 |
| 3 | 1k | R_Axial_L5.5mm_D2.0mm_P7.62mm_Horizontal | R1, R2, R3 |
CPU16 Pico2 PowerOnly design files
The KiCad project lives in the tendai22/CPU16_Pico2 repository on GitHub; these links point at the commit this page was built from.
CPU16 Pico2 PowerOnly: common questions
How big is the CPU16 Pico2 PowerOnly PCB?
The CPU16 Pico2 PowerOnly measures 99.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CPU16 Pico2 PowerOnly?
27 components, from 19 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 CPU16 Pico2 PowerOnly design files?
From the tendai22/CPU16_Pico2 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the CPU16 Pico2 PowerOnly design in my own project?
The repository has no license, so all rights stay with tendai22. Use it as a reference, and ask the author before reusing the design.
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