BC501HZ-01-26P: BK3432 Bluetooth 5.0 Dual-Mode Module Based
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BC501HZ-01-26P IoT module based on BK3432 chip
The BC501HZ-01-26P module, built around Beken’s BK3432 chip, is a highly integrated Bluetooth 5.0 Dual Mode (Classic + BLE) SoC supporting 2 Mbps data rates, ideal for wireless IoT applications. It combines a high-performance RF transceiver, MCU, 160 KB Flash, and 20 KB RAM, with ultra-low power consumption thanks to its switch-mode DC-DC regulator and advanced process technology. The chip excels in high-interference environments with embedded interference suppression and automatic gain control. Operating from 2.0–3.6V, it includes JTAG, I2C, SPI, dual UART, PWM, 10-bit ADC, and multiplexed GPIOs, while supporting 16/64 MHz and 32 kHz clock sources. With program code protection and flexible protocol programmability, it’s well-suited for custom Bluetooth applications in smart home, wearables, and industrial devices.
Overview
The BC501HZ-01-26P module is based on the Beken BK3432 chip. The BK3432 chip is a highly integrated Bluetooth 5.0 dual-mode data SoC with a 2 Mbps data rate supported. It integrates a high-performance RF transceiver, baseband, MCU, rich feature peripheral units, programmable protocol, and profile to support Bluetooth classic and low-energy applications. The Flash program memory makes it suitable for customized applications.
The BK3432 is designed with advanced technology processes and integrated with a switch DCDC regulator, which has ultra-low power consumption and ultra-low leakage power. The embedded high-order interference suppression filter and fast automatic gain control logic make it work well in high-interference environments.
Features
- Bluetooth® SIG Bluetooth Dual Mode 5.0 compliant
- Low-power 2.4GHz Transceiver
- MCU integrated
- 160 KB programmable Flash for Program and 20 KB RAM for Data
- Program code read protection
- Operation voltage from 2.0 V to 3.6 V
- Clock
- 16 MHz crystal reference clock
- 64 MHz digital PLL clock
- 32 kHz ring oscillator
- External 32 kHz crystal oscillator
- MCU can run with any clock source with an internal frequency divider
- Interface and peripheral units
- JTAG, I2C, SPI interface
- Two UART interfaces
- Multi-channel PWM output
- On-chip 10-bit general ADC
- GPIO with multiplexed interface functions
Pin Configuration
Pin configuration is the standard pin configuration, adopted by most of the competitor products available in the market. The pin configuration is compatible with ESP32-WROOM.
| Foot position | The name of the symbol | I/O | Description of the function |
| Pin | Symb | I/O | Description |
| 1 | RF | RF | RF signal port/NC |
| 2 | GND | GND | GND |
| 3 | VCC3V | Analog | Power, 3 V |
| 4 | NC | NC | NC |
| 5 | P31 | Digital I/O | General-purpose IO/ADC1 |
| 6 | P32 | Digital I/O | General-purpose IO/ADC2 |
| 7 | P35 | Digital I/O | General-purpose IO/ADC5 |
| 8 | RSTN | Analog | Active low pin reset |
| 9 | P14 | Digital I/O | General-purpose IO/PMW4 |
| 10 | GND | GND | GND |
| 11 | P17 | Digital I/O | General purpose IO//UART2_RXD |
| 12 | P16 | Digital I/O | General-purpose IO/UART2_TXD |
| 13 | P34 | Digital I/O | General-purpose IO/ADC4 |
| 14 | P33 | Digital I/O | General-purpose IO |
| 15 | P13 | Digital I/O | General-purpose IO/PWM3 |
| 16 | P12 | Digital I/O | General-purpose IO/PWM2 |
| 17 | P11 | Digital I/O | General-purpose IO/PWM1 |
| 18 | P10 | Digital I/O | General-purpose IO/PWM0 |
| 19 | P07 | Digital I/O | General-purpose IO/PWM5 |
| 20 | P06 | Digital I/O | General-purpose IO/PMW4 |
| 21 | P05 | Digital I/O | General-purpose IO |
| 22 | P01/RX | Digital I/O | GPIO1/UART1_RXD |
| 23 | P00/TX | Digital I/O | GPIO0/UART1_TXD |
| 24 | P04 | Digital I/O | General-purpose IO |
| 25 | P03 | Digital I/O | General-purpose IO/SDA |
AT Commands (Optional Firmware):
| directives | Response Data | Feature description |
| AT+GVER | See:1.0 | Obtain the software version number |
| AT+REST\r\n | REST | reposition |
| AT+SNAM+Name\r\n | SNAM: Bluetooth name | Set the Bluetooth name |
| AT+GNAM\r\n | GNAM: Bluetooth name | Get the Bluetooth name |
| AT+GADI\r\n | GADI: Minimum Broadcast Interval, Maximum Wide
Broadcast interval |
Get the broadcast interval |
| AT+ SADI+ Minimum Broadcast Interval, Maximum Broadcast Interval\r\n (Examples:
AT+SADI+0800,0800） |
SADI: Minimum Broadcast Interval, Maximum Broadcast Interval | Set the broadcast interval |
| AT+ GCPU\r\n | GCPU: Update Parameters, Minimum Connection Interval, Maximum Connection Interval, Connection Latency,
The connection timed out |
Get the connection interval |
| AT+ SCPU+ update parameter flag,
Minimum Connection Interval, Maximum Connection Interval, Connection Latent, Connection Timeout\r\n (Example: AT+SCPU+1,0008,0010,0000,0 600） |
SCMA: Update Parameters, Minimum Connection Interval, Maximum Connection Interval, Connection Latency, Connection Timeout | Set the connection interval |
| AT+GADD | GADD: Bluetooth address | Get a Bluetooth address |
| AT+ GURT\r\n | GURT: Baud Rate | Get the baud rate |
| AT+ SURT+baud rate\r\n | SURT: baud rate | Set the baud rate |
For documentation and help, refer to our Knowledge Base section
Beken is the official brand name of Bekencorp.
| Preloaded Firmware | None, AT Commands |
|---|
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