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Zerocat Chipflasher Board
v0.4.3 (board-edition-1)
True Free-Design Hardware and Do-it-Yourself!
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Zerocat Chipflasher Board
v0.4.3 (board-edition-1)
True Free-Design Hardware and Do-it-Yourself!
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| refdes | device | value | footprint | comment | qty |
|---|---|---|---|---|---|
| U3 | CRYSTAL | 5MHz | CRYSTAL 300 | 1 | |
| CONN1 | CONNECTOR_4 | USB-Type-A-Connector | 1 | ||
| U4 | 24Cxx | 24LC256 | DIP8 | This chip is optional. Use socket. | 1 |
| D3 | LED | yellow | LED3 | 1 | |
| D2 | LED | orange | LED3 | 1 | |
| U6 | MAX232 | MAX3232CPE | DIP16 | Bug on Pin10. The transmitter inputs do not have pullup resistors. Connect unused inputs to GND or VCC. Connect Pin10 to J2 Pin9 with extra wire as a workaround. This circuit is generating RS232 voltages of about +/- 5.5VDC. MAX3232EPE+ works as well (needs extended reset pulse). | 1 |
| J2 | HEADER10 | male | HEADER10_2 | 1 | |
| D1 | LED | green | LED3 | 1 | |
| R15,R16,R17 | RESISTOR | 220R | ACY600 | Value need not match exactly. | 3 |
| C5 | POLARIZED_CAPACITOR | 10uF 16V | RCY100P | 1 | |
| R19,R20 | RESISTOR | 10K | ACY600 | 2 | |
| R4,R5,R8,R9 | RESISTOR | 100R | ACY100S | 4 | |
| R6,R7 | RESISTOR | 100R | ACY500 | 2 | |
| R1 | RESISTOR | 1K | ACY600 | 1 | |
| J3 | HEADER3 | male | JUMPER3 | 1 | |
| U2 | 7432 | 74HC32 | DIP14 | 1 | |
| R2 | RESISTOR | 22K | ACY600 | 1 | |
| J1 | CONNECTOR_9 | male | JUMPER9 | Note an angled one extends beyond the PCB's edge. | 1 |
| R10 | RESISTOR | 464R | ACY600 | 1 | |
| R11,R12,R13,R3 | RESISTOR | 100R | ACY600 | 4 | |
| R14 | VARIABLE_RESISTOR | 200R | Trim-Resistor-500 | Use a transparent one, if available. | 1 |
| U7 | AMS1117 | 3.3V | SOT223 | At least 3x3cm tab copper area is missing! | 1 |
| U1 | P8X32A | DIP40 | This chip is precious, use socket. | 1 | |
| C15 | CAPACITOR | 100nF | RCY100 | Blocking Cap for 24LC256. | 1 |
| C12,C13 | CAPACITOR | 100nF | RCY100 | Blocking Cap for P8X32A. | 2 |
| C14 | CAPACITOR | 100nF | RCY100 | Blocking Cap for 74HC32. | 1 |
| Q1 | IRLML6402 | SOT23 | 1 | ||
| CONN2 | CONNECTOR_4 | JUMPER4 | 1 | ||
| C3 | POLARIZED_CAPACITOR | 10uF tantalum | RCY100P | 1 | |
| U5 | AMS1117 | 3.3V | SOT223 | 1 | |
| V1 | THERMISTOR +t GradC | RXEF075 | RCY200 | Also known as "Polyfuse". Size is "1.5A" instead of "1A" as mentioned on PCB. | 1 |
| D6,D8 | DIODE | 1N4007 | ALF500 | We used SY360/1 here. | 2 |
| D4,D5,D7 | LED | red | LED3 | 3 | |
| R18,R21,R22 | RESISTOR | 220R | ACY600 | Value need not match exactly. | 3 |
| C1 | POLARIZED_CAPACITOR | 1000uF 6.3V | RCY100P | 1 | |
| Z1 | ZENER_DIODE | 6V8 @ 1.3W | ALF500 | 1 | |
| C2,C4 | CAPACITOR | 100nF | RCY100 | 2 | |
| C8 | CAPACITOR | 100nF | RCY100 | Please ignore PCB's polarized footprint. | 1 |
| C9 | CAPACITOR | 100nF | RCY100 | Please ignore PCB's polarized footprint. | 1 |
| C10,C6,C7 | CAPACITOR | 100nF | RCY100 | Please ignore PCB's polarized footprint. | 3 |
1.8.17
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