The BM72D3021-1 is a voice playback module based on the MCU HT68FV022, offering 16Mbit Flash and capable of storing up to 400 seconds of voice. You can edit voices and sentences on Voice MCU Workshop and program the edit file to the product via e-LinkPro2 or e-Link. And then connect to a speaker for voice play.
| Select | Quantity | Discount | Unit price |
| 1-9 | - | US$1.15 | |
| 10+ | 5% | US$1.09 |
The product can play both voice and sentences. Voice refers to various sounds, such as human voices, music, or pre-recorded audio, while sentences are composed of voices, and you can set silence between two voices.
It supports uploading mono WAV files to the Voice MCU Workshop. After editing the voices, you can program them to the product or generate a programming file.
The HT68FV022 offers 16Mbit Flash memory for storing voices, and the storable duration of voices depends on the compression format chosen. The better the audio quality, the more memory it will occupy, resulting in a shorter duration.
On the Voice MCU Workshop, you can select from the following compression formats: PCM, u-law, and ADPCM. Based on the MCU frequency and compression format, you have an additional selection for compressing the file at low, medium, or high qualities.
★ Refer to the “2.1 Peripheral Mode” chapter in the Voice MCU Workshop user’s guide for more details.
Voice MCU Workshop offers the below functions:
★ Refer to the "2. Voice MCU Workshop Interface Description" chapter in the Voice MCU Workshop user's guide for more details.
There are three control modes of the peripheral mode: one-wire mode, two-wire mode, and direct (key) mode.
You can add one 4.7K resistance to the module’s pin1 and connect the resistance to GND for one-wire mode/two-wire mode external selection. It is necessary to power up the module again after changing the mode.
★ Refer to the "Peripheral IC Mode" chapter in the HT68FV022 datasheet for more details.
| Pin | Pin name | Function |
|---|---|---|
| 1 | PA0 |
CLK: 2-wire mode CLK signal SEL: 1-wire or 2-wire mode signal selection KEY1: direct mode KEY1 input |
| MOSI | Voice update: master output / slave input data signal | |
| 2 | PA2 |
Busy: output low when playing in 1-wire or 2-wire mode KEY2: direct mode KEY2 input |
| SCLK | Voice update: serial clock | |
| 3 | PA1 |
DATA: 1-wire or 2-wire mode signal selection KEY3: direct mode KEY3 input |
| MISO | Voice update: master input / slave output data signal | |
| 4 | GND | Ground |
| 5 | VDD | Power supply: 2.3V~5.5V |
| 6 | PB1 | I/O pin |
| CS | Voice update: chip selection signal | |
| PWM2 | 1-wire / 2-wire / direct / professional mode
PWM driver output channel 2 |
|
| 7 | PB1 | I/O pin |
| CS | Voice update: chip selection signal | |
| PWM2 | 1-wire / 2-wire / direct / professional mode
PWM driver output channel 2 |
|
| 8 | PB0 | I/O pin |
| PWM1 | 1-wire / 2-wire / direct / professional mode
PWM driver output channel 1 |
Refer to the below wiring picture when using the product with e-Link.
(the e-LinkPro2 has the same pin assignment as the e-Link.)
| HS Code (reference) | 8518.90.90.00-1 |
|---|
