openQCM
Teensy 4.0 microcontroller with pre-installed openQCM Firmware (預先安裝 openQCM 韌體的 Teensy 4.0 微控制器)
QCM Teensy 電子元件是一款高品質的 Teensy 4.0 相容屏蔽，適用於石英晶體微天平應用。 QCM 屏蔽是雙層 PCB，其特點是無鉛鍍金焊盤。 QCM電路由石英晶體振盪器驅動器、3V3電壓調節器（增加訊號穩定性）、訊號調理電路所組成。此外，在其感測器頭 PCB 中還有一個新的 I2C 溫度感測器。
注意：Teensy Shield 出廠時已安裝所有組件。不包括Teensy board。
規格
Specifications
| Feature | Teensy 4.0 | ||
|---|---|---|---|
| Ethernet | -none- | ||
| USB Host | 2 SMT Pads | ||
| SDIO (4 bit data) | 8 SMT Pads | ||
| PWM Pins | 31 | ||
| Analog Inputs | 14 | ||
| Serial Ports | 7 | ||
| Flash Memory | 2 Mbyte | ||
| QSPI Memory | Program memory | ||
| Breadboard I/O | 24 | ||
| Bottom SMT Pads | 16 | ||
| SD Card Signals | 0 | ||
| Total I/O Pins | 40 | ||
- ARM Cortex-M7 at 600 MHz
- Float point math unit, 64 & 32 bits
- 1984K Flash, 1024K RAM (512K tightly coupled), 1K EEPROM (emulated)
- USB device 480 Mbit/sec & USB host 480 Mbit/sec
- 40 digital input/output pins, 31 PWM output pins
- 14 analog input pins
- 7 serial, 3 SPI, 3 I2C ports
- 2 I2S/TDM and 1 S/PDIF digital audio port
- 3 CAN Bus (1 with CAN FD)
- 32 general purpose DMA channels
- Cryptographic Acceleration & Random Number Generator
- RTC for date/time
- Programmable FlexIO
- Pixel Processing Pipeline
- Peripheral cross triggering
- Power On/Off management
