A parallel to Pico 2 W and sd-card project for the Amiga
| Reference | Name/Value | Package | Notes |
|---|---|---|---|
| U1 | Raspberry Pi Pico 2 W | SC1633 (without header) | RPi Pico 2 W |
| U2 | SN74CBT16210 | TSSOP-48 6.1x12.5mm_P0.5mm | 20-BIT FET Bus switch with level shifting, high-speed TTL-compatible. SN74CBT16210CDGGR |
| J1 | DB25_Male | DSUB-25_Male_EdgeMount_P2.77mm | DB25 Male Aliexpress |
| J2 | Sunrom Micro SD Card Holder | 9-pin Micro SD card slot connector | Sunrom Micro-SD Aliexpress |
| J3 | (Optional) UART0 PinHeader | 5-pin 2.54 mm pitch single row | Optional 5V-tolerant header for UART0 (TX on GP12, RX on GP13) |
| JP1 | (Optional) PinHeader/Jumper shunt | 2-pin 2.54 mm pitch single row | Jumper on connects Amiga /RESET signal together with RUN-pin (pin 30) on Pico 2 W, resets pico on Ctrl-A-A |
| D1 (Optional) | LED Square 2x5x7mm | PinHeader_1x02_P2.54mm_Vertical, pin pitch 2.54 mm | Power LED indicator Aliexpress |
| D2 (Optional) | LED Square 2x5x7mm | PinHeader_1x02_P2.54mm_Vertical, pin pitch 2.54 mm | Activity LED indicator Aliexpress |
| D3 | MMDL6050T1G Small Signal Switching Diode 200mA | SOD-323 | MMDL6050T1G |
| R1 (Optional) | 4.7k Ω | 0805 | (Mandatory if D1 populated) Series resistor for D1 LED, adjust R-value to your type of LED and preferred brightness |
| R2 (Optional) | 220 Ω | 0805 | (Mandatory if D2 populated) Series resistor for D2 LED, adjust R-value to your type of LED and preferred brightness |
| R3 (Optional) | 10k Ω | 0603 | Pull-up for /STROBE signal, not currently used |
| R4 | 2.9k - 3k Ω | 0603 | Resistor for dummy loading D3 to achieve steady 0.6-0.7V VCC drop resulting in ~4.3V power supply to U2 CR0603-FX-2941ELF |
| RN1, RN2 | CAY16-103J4LF RES ARRAY 4 Resistors 10k Ω | 1206 | CAY16-103J4LF |
| RN3 | A103J | Bussed Resistor Network Array SIP-9 | Pull-up resistors for data lines, 9PIN-10K Aliexpress |
| C1 | Capacitor 10uF | 1206 | |
| C2 | Capacitor 0.1uF = 100nF | 0805 | |
| C3 | Capacitor 0.1uF = 100nF | 0603 | |
| Housing | 2 x Plastic Shell Cover | For DB25 plug | Aliexpress |
| 2 x PinHeader | PinHeader Board Weight/Level Support | 3-pin 2.54 mm pitch single row | Move the plastic guard to leave ~7.5 mm of pin before soldering in order to hold board in perfect level |
When ordering from JLCPCB select:
Specify Layer Sequence: Yes
L1(Top layer): F_Cu.gbr
L2(Inner layer1): GND_Cu.gbr
L3(Inner layer2): VCC_Cu.gbr
L4(Bottom layer): B_Cu.gbr
Remove Order Number:
Specify a location
This will notify JLC where to put the order number, they will replace the "JLCJLCJLCJLC" silkscreen label.