C816SX-SM
About the C816SX-SM PCB
C816SX-SM is an open source ESP32 PCB design by rjacobs1969, published on GitHub. It is a 6-layer board measuring 99.9 × 99.9 mm, with 122 components from 64 distinct parts.
Its main chip is the W65C816SXQ, from the ESP32 family. Other key parts include the IS61WV20488FBLL-10TLI, SN74LVC8T245PWR, 74LVC07ADR, SP720ABTG and W25Q128JVS. By type, the board carries 42 capacitors, 37 resistors, 19 ICs, 19 connectors, 3 jumpers and 1 crystal.
From the project
Modern 8 bit computer
Main components on the C816SX-SM
C816SX-SM bill of materials (BOM)
122 components, 64 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | IS61WV20488FBLL-10TLI | SOP80P1176X120-44N | IC4 |
| 1 | SN74LVC8T245PWR W65C816SxQ | LQFP-44_10x10mm_P0.8mm | U1 |
| 1 | SN74LVC8T245PWR PCM5102A | TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | SN74LVC8T245PWR XC6206PxxxMR | SOT-23-3 | U3 |
| 1 | SN74LVC8T245PWR 74LVC07 | SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | W65C816SXQ ESP32-C5-WROOM-1 | ESP32-C5-WROOM-1 | U5 |
| 2 | SN74LVC8T245PWR USBLC6-2SC6 | SOT-23-6 | U6, U10 |
| 1 | 74LVC07ADR 74LVC07 | SOIC-14_3.9x8.7mm_P1.27mm | U7 |
| 1 | 74LVC07ADR W65C22SxQ | LQFP-44_10x10mm_P0.8mm | U8 |
| 1 | SP720ABTG USBLC6-2SC6 | SOT-23-6 | U9 |
| 1 | W25Q128JVS | SOIC-8_5.3x5.3mm_P1.27mm | U14 |
| 1 | W25Q128JVS SN74LVC8T245PWR | TSSOP-24_4.4x7.8mm_P0.65mm | U15 |
| 1 | XC6206PXXXMR SN74LVC8T245PWR | TSSOP-24_4.4x7.8mm_P0.65mm | U17 |
| 1 | PCM5102A SN74LVC8T245PWR | TSSOP-24_4.4x7.8mm_P0.65mm | U18 |
| 4 | PHDMI2F4 SN74LVC8T245PWR | TSSOP-24_4.4x7.8mm_P0.65mm | U19, U20, U21, U22 |
| 1 | SiT8008xx-7x-xxE | Oscillator_SMD_SiT_PQFN-4Pin_2.0x1.6mm | Y2 |
| 1 | Conn_02x06_Odd_Even | PinHeader_2x06_P2.54mm_Vertical | J1 |
| 1 | HDMI_A | HDMI_A_Molex_208658-1001_Horizontal | J2 |
| 1 | C116683 AudioJack3 | Jack_3.5mm_CUI_SJ1-3533NG_Horizontal_CircularHoles | J3 |
| 1 | CONN_02X04_ODD_EVEN USB_A_Stacked | USB_A_Wuerth_61400826021_Horizontal_Stacked | J4 |
Show 44 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
| 1 | Conn_02x04_Odd_Even | PinHeader_2x04_P2.54mm_Vertical | J7 |
| 1 | 5749265-1 | 57492651 | J10 |
| 1 | Conn_02x06_Odd_Even | PinSocket_2x06_P2.54mm_Vertical | J11 |
| 2 | C111617 Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J14, J15 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P Conn_01x06_Pin | PinSocket_1x06_P2.54mm_Vertical | J16 |
| 1 | Conn_01x09 | PinSocket_1x09_P2.54mm_Vertical | J17 |
| 1 | CONN_01X04 USB_B | USB_B_Lumberg_2411_02_Horizontal | J18 |
| 2 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J19, J20 |
| 1 | Conn_01x07_Pin | PinSocket_1x07_P2.54mm_Vertical | J23 |
| 1 | CONN_01X05_PIN Conn_01x02 | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J25 |
| 2 | NYS354 | NYS354 | J26, J27 |
| 3 | Jumper_2_Open | TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | JP1, JP2, JP3 |
| 1 | DDR3_204P_SMD | DDR3-SMD_0705F0BE40F | SLOT1 |
| 1 | 2.2UF 1uF | C_0603_1608Metric | C1 |
| 1 | 1UF 1uF | C_0603_1608Metric | C2 |
| 2 | 1uF | C_0603_1608Metric | C3, C4 |
| 1 | 100N 2.2uF | C_0603_1608Metric | C6 |
| 1 | 1UF 2.2uF | C_0603_1608Metric | C8 |
| 2 | 100N 10uF | C_0805_2012Metric | C10, C11 |
| 31 | 100N 100n | C_0402_1005Metric | C23, C24, C25, C26, C27, C28, C29, C30 +23 |
| 1 | 100N 2.2n | C_0402_1005Metric | C46 |
| 1 | 1UF 2.2n | C_0402_1005Metric | C47 |
| 1 | 1UF 100n | C_0402_1005Metric | C48 |
| 1 | 470 1k | R_0603_1608Metric | R25 |
| 1 | 0.1OHM 1k | R_0603_1608Metric | R26 |
| 2 | 3K9 1k | R_0603_1608Metric | R28, R29 |
| 2 | 3K9 470 | R_0603_1608Metric | R30, R31 |
| 1 | 10K 1k | R_0603_1608Metric | R32 |
| 1 | 390 330 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33 |
| 4 | 1k | R_0603_1608Metric | R34, R36, R37, R38 |
| 1 | 1k5 | R_0603_1608Metric | R35 |
| 2 | 33 | R_0603_1608Metric | R39, R40 |
| 1 | 10K | R_0603_1608Metric | R42 |
| 2 | 5K1 | R_0603_1608Metric | R43, R44 |
| 1 | 10K 330 | R_0603_1608Metric | R45 |
| 1 | 330 | R_0603_1608Metric | R46 |
| 1 | 390 470 | R_0603_1608Metric | R48 |
| 1 | 10K 470 | R_0603_1608Metric | R49 |
| 6 | 33 | R_Array_Convex_4x0603 | RN4, RN6, RN7, RN10, RN11, RN12 |
| 2 | 10K 33 | R_Array_Convex_4x0603 | RN8, RN9 |
| 5 | 10K 10k | R_Array_Convex_4x0603 | RN13, RN14, RN15, RN16, RN19 |
| 1 | 49.9 1k | R_Array_Convex_4x0603 | RN17 |
| 1 | 49.9 33 | R_Array_Convex_4x0603 | RN18 |
C816SX-SM design files
The KiCad project lives in the rjacobs1969/C816 repository on GitHub; these links point at the commit this page was built from.
C816SX-SM: common questions
What microcontroller does the C816SX-SM use?
The C816SX-SM is built around the W65C816SXQ, from the ESP32 family.
How big is the C816SX-SM PCB?
The C816SX-SM measures 99.9 × 99.9 mm, has 6 copper layers and is 0.895 mm thick.
How many components are on the C816SX-SM?
122 components, from 64 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 C816SX-SM design files?
From the rjacobs1969/C816 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the C816SX-SM design in my own project?
The repository has no license, so all rights stay with rjacobs1969. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the C816SX-SM without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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