Introduction
The Realtek RTL8721Dx series is a Combo SoC that supports dual-band Wi-Fi 4 (2.4GHz + 5GHz) and Bluetooth (BLE 5.0) specifications. With excellent ultra-low power consumption, enhanced encryption strategy (PSA Level 2), and abundant peripheral resources, it is widely used in smart home appliance, line controller, smart door lock, battery camera, smart remote controller, Wi-Fi speaker, Wi-Fi Full MAC NIC, BLE gateway, and smart POS, etc.
DESCRIPTION
CHIP
Highlights
WIFI 2.4G/5G + BLE 5.0 Dual Mode
WIFI4 2.4G/5G;
BLE 5.0;
BLE Mesh 1.1 long Range.
Flexible Connectivity
IOT Transceiver .
iNIC Mod:
SPI @Linux, RTOS;
SDIO @Linux, RTOS ;
USB @Linux, RTOS。
Low Power and Security
Lowe Power :
DTIM=10: 84µA (3.3V, 2.4G);
DTIM=10: 74µA (3.3V, 5G).
Security :
PSA Level 2.
Specifications
System and Platform
- Dual cores: Real-M300 and Real-M200
- Real-M300:
- Arm Cortex-M55 compatible instruction set
- Running at a frequency of up to 345MHz
- 16KB 4-way I-Cache, 16KB 4-way D-Cache
- Real-M200:
- Arm Cortex-M23 compatible instruction set
- Running at a frequency of up to 115MHz
- 16KB 4-way I-Cache, 16KB 4-way D-Cache
- Memory:
- 512KB on-chip SRAM
- Embedded DQ8 PSRAM, up to 200MHz
- Supports QSPI Flash, up to 104MHz
Security
- Secure boot
- Arm TrustZone-M
- True Random Number Generator (TRNG)
- Hardware crypto engine supporting AES and SHA algorithms
- Whole or partial Flash encryption
- Read Protection (RDP)
- JTAG/SWD password protection/forbidden
- 2K bytes OTP, up to 2K bits for users
RF Features
Wi-Fi
- 802.11 a/b/g/n 1 x 1，2.4GHz + 5GHz
- Supports MCS0 – MCS7 40MHz bandwidth
- Power-saving mechanism
- Supports antenna diversity
- Low power:
- WoWLAN mode:
- DTIM=10: 84µA (3.3V, 2.4G)
- DTIM=10: 74µA (3.3V, 5G)
- Deep-sleep mode:
- 12.2µA (3.3V, 25°C)
- 10.4µA (1.8V, 25°C)
- WoWLAN mode:
BT
- Supports BLE 5.0
- Supports BLE Long Range
- Supports piconets in a scatter-net (up to 8 master roles and 3 slave roles)
- Tx power: -10dBm ~ 10dBm, 8dBm typically
- Rx sensitivity: -99dBm@LE1M
Peripheral Interface
- Flexible design of GPIO configuration
- Multi-communication interfaces: SPI x 2, UART x 4, I2C x 2
- Hardware Key-Scan interface supports up to 8*8 (64) keys
- Hardware IR transceiver can easily adapt to various IR protocols
- Supports Real-Time Clock timer together with 10 basic timers
- Supports 8 channels of PWM timer and 1 capture timer
- Supports 7 channels of general 12-bit ADC and 1 channel of VBAT
- Supports 4 channels of touch pad
- Supports 8 independent channels of GDMA
- Supports USB 2.0 full-speed device mode
- Supports SDIO device with 1-bit and 4-bit mode
- Embeds a serial LEDC to control the external LED lamps
- Integrated Pixel Processing Engine (PPE) to process pixel data faster
- Integrated OSPI display interface supports screens with OSPI/QSPI/SPI interfaces
- Integrated audio codec supports 2 channels DMIC interface
- I2S x 2: up to 384kHz sampling rate
System and Platform
- Dual cores: Real-M300 and Real-M200
- Real-M300:
- Arm Cortex-M55 compatible instruction set
- Running at a frequency of up to 345MHz
- 16KB 4-way I-Cache, 16KB 4-way D-Cache
- Real-M200:
- Arm Cortex-M23 compatible instruction set
- Running at a frequency of up to 115MHz
- 16KB 4-way I-Cache, 16KB 4-way D-Cache
- Memory:
- 512KB on-chip SRAM
- Embedded DQ8 PSRAM, up to 200MHz
- Supports QSPI Flash, up to 104MHz
Security
- Secure boot
- Arm TrustZone-M
- True Random Number Generator (TRNG)
- Hardware crypto engine supporting AES and SHA algorithms
- Whole or partial Flash encryption
- Read Protection (RDP)
- JTAG/SWD password protection/forbidden
- 2K bytes OTP, up to 2K bits for users
RF Features
Wi-Fi
- 802.11 a/b/g/n 1 x 1，2.4GHz + 5GHz
- Supports MCS0 – MCS7 40MHz bandwidth
- Power-saving mechanism
- Supports antenna diversity
- Low power:
- WoWLAN mode:
- DTIM=10: 84µA (3.3V, 2.4G)
- DTIM=10: 74µA (3.3V, 5G)
- Deep-sleep mode:
- 12.2µA (3.3V, 25°C)
- 10.4µA (1.8V, 25°C)
- WoWLAN mode:
BT
- Supports BLE 5.0
- Supports BLE Long Range
- Supports piconets in a scatter-net (up to 8 master roles and 3 slave roles)
- Tx power: -10dBm ~ 10dBm, 8dBm typically
- Rx sensitivity: -99dBm@LE1M
Peripheral Interface
- Flexible design of GPIO configuration
- Multi-communication interfaces: SPI x 2, UART x 4, I2C x 2
- Hardware Key-Scan interface supports up to 8*8 (64) keys
- Hardware IR transceiver can easily adapt to various IR protocols
- Supports Real-Time Clock timer together with 10 basic timers
- Supports 8 channels of PWM timer and 1 capture timer
- Supports 7 channels of general 12-bit ADC and 1 channel of VBAT
- Supports 4 channels of touch pad
- Supports 8 independent channels of GDMA
- Supports USB 2.0 full-speed device mode
- Supports SDIO device with 1-bit and 4-bit mode
- Embeds a serial LEDC to control the external LED lamps
- Integrated Pixel Processing Engine (PPE) to process pixel data faster
- Integrated OSPI display interface supports screens with OSPI/QSPI/SPI interfaces
- Integrated audio codec supports 2 channels DMIC interface
- I2S x 2: up to 384kHz sampling rate
Part Number Comparison
Part Number | CPU | On-chip SRAM | Embedded Flash | Embedded PSRAM | Wi-Fi Spec | Bluetooth Spec | GPIO | Operating Voltage (V) | Operating Temperature | Package (mm) | Reference Module |
|---|---|---|---|---|---|---|---|---|---|---|---|
 RTL8721DAF-VA2 | |||||||||||
RTL8721DAF-VT2 | |||||||||||
RTL8721DAM-VA2 | |||||||||||
RTL8721DCF-VA2 | |||||||||||
RTL8721DCM-VA2 | |||||||||||
RTL8721DCM-VA3 | |||||||||||
RTL8721DGF-VW2 | |||||||||||
RTL8721DGM-VW2 |
Resources
Datasheet
SDK
Application
