stm-midi-poc1
LispEngineer
MIDI synthesizer built around an STM32 - Proof of Concept #1 (counting from 0)
Components (52)
| Reference | Value | Description |
|---|---|---|
| U1 | STM32F722RETx | STMicroelectronics Arm Cortex-M7 MCU, 512KB flash, 256KB RAM, 216 MHz, 1.7-3.6V, 50 GPIO, LQFP64 |
| U2 | AMS1117-3.3 | 1A Low Dropout regulator, positive, 3.3V fixed output, SOT-223 |
| U3 | PAM8908JER | |
| U4 | PCM5102A | 2.1 VRMS, 112dB Audio Stereo DAC with PLL and 32-bit, 384kHz PCM Interface, TSSOP-20 |
| U6,U7 | TLP2362 | |
| U8 | AP7333-33SRG-7 | |
| C1,C29 | 10uF | Unpolarized capacitor |
| C2-C5,C9,C13,C18-C20,C26,C28,C32,C33,C44 | 100nF | Unpolarized capacitor |
| C6,C34,C35 | 10nF | Unpolarized capacitor |
| C7,C8,C21,C22,C25,C27,C30,C31,C36-C39,C41-C43 | 1uF | Unpolarized capacitor |
| C10,C11 | 10pF | Unpolarized capacitor |
| C12 | 4.7uF | Unpolarized capacitor |
| C14,C15 | 22uF | Unpolarized capacitor |
| C16,C17 | 4.7pF | Unpolarized capacitor |
| C23,C24,C40 | 2.2uF | Unpolarized capacitor |
| CN1 | MIDI Out 1 | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN2 | MIDI In 1 | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN3 | MIDI Out 2 | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN4 | MIDI In 2 | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN5 | Line out | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN6 | Headphone | Korean Hroparts Elec PJ-321A-4A -20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors (Headphones) ROHS |
| CN7 | USB-C | USB 2.0-only 14P Type-C Receptacle connector |
| D2 | RED_PWR | Light emitting diode |
| D3 | USER_RED | Light emitting diode |
| D4 | USER_GREEN | |
| D5 | USER_BLUE | |
| D6,D7 | 1N4148WS | 75V 0.15A Fast switching Diode, SOD-323 |
| D8-D10 | ESD | ESD protection diode, 5.0Vrwm, SOD-923 SZESD9B5.0ST5G |
| FB1 | 120@100MHz | Ferrite bead, small symbol |
| J2 | Debug | Pin Header male with pin space 2.54mm. Pin Count -8 |
| J3 | I2C | Pin Header male with pin space 2.54mm. Pin Count -8 |
| J4 | UART456 | Pin Header male with pin space 2.54mm. Pin Count -8 |
| J6 | SPI | |
| J7 | USB-5V | 2-pin 2.54mm male header, through hole |
| J8 | GPIO | |
| J9 | Input Divider | |
| R1,R21 | 10kΩ | Resistor |
| R2,R3 | 5k1Ω | Resistor |
| R4-R8 | 1k5Ω | Resistor |
| R9,R11 | 4k7Ω | Resistor |
| R10,R12 | 100Ω | Resistor |
| R13,R14,R26,R27 | 47Ω | Resistor |
| R15,R22,R23,R28 | 220Ω | Resistor |
| R16-R20,R29 | 1k8Ω | Resistor |
| R24,R25 | 3k9Ω 1% | Resistor |
| RN1 | 56Ω | 56Ω 4D03WGJ0560T5E |
| SW1 | BOOT0 | Switch, single pole double throw |
| SW4 | BTN1 | |
| SW5 | BTN2 | |
| SW6 | Reset | |
| X1 | 32.768kHz 7pF | |
| X2 | 16MHz 10pF | Four pin crystal, GND on pins 2 and 4, small symbol |