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Part number

Real-M300

Real-M200

On-chip SRAM

TrustZone

Flash

PSRAM

Wi-Fi

Bluetooth

Operating voltage

Operating temperature

Package (mm)

RTL8721DAF-VA2-CG

345MHz

115MHz

512KB

Y

4MB

X

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-20°C ~ 85°C

QFN48 (6 x 6)

RTL8721DAF-VT2-CG

345MHz

115MHz

512KB

Y

4MB

X

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-40°C ~ 105°C

QFN48 (6 x 6)

RTL8721DAM-VA2-CG

345MHz

115MHz

512KB

Y

X

4MB

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-20°C ~ 85°C

QFN48 (6 x 6)

RTL8721DCF-VA2-CG

345MHz

115MHz

512KB

Y

4MB

X

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-20°C ~ 85°C

QFN68 (8 x 8)

RTL8721DCM-VA2-CG

345MHz

115MHz

512KB

Y

X

4MB

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-20°C ~ 85°C

QFN68 (8 x 8)

RTL8721DCM-VA3-CG

345MHz

115MHz

512KB

Y

X

8MB

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

2.97V ~ 3.63V

-20°C ~ 85°C

QFN68 (8 x 8)

RTL8721DGF-VW2-CG

345MHz

115MHz

512KB

Y

4MB

X

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

1.71V ~ 3.63V

-20°C ~ 85°C

BGA100 (5.1 x 5.1)

RTL8721DGM-VW2-CG

345MHz

115MHz

512KB

Y

X

4MB

Wi-Fi 4 (2.4GHz + 5GHz)

Bluetooth 5.0 LE

1.71V ~ 3.63V

-20°C ~ 85°C

BGA100 (5.1 x 5.1)

Key Features

  • Wi-Fi 4 2.4GHz/5GHz Dual-band + Bluetooth 5.0 LE

  • PSA Level-2 certified

  • Ultra-low power

  • FreeRTOS/Zephyr supported

Block Diagram

../../_images/block_diagram_dplus.svg

Block diagram

Core Architecture

  • Real-M300 (KM4)

    • Armv8.1-M architecture (Arm® Cortex®-M55 ISA compatible)

    • Up to 345MHz, 3-stage pipeline

    • 16KB 4-way I-Cache + 16KB 4-way D-Cache

    • Integrated FPU/DSP extensions

    • Hardware-enforced isolation via TrustZone®-M

  • Real-M200 (KM0)

    • Armv8-M architecture (Arm® Cortex®-M23 ISA compatible)

    • Up to 115MHz, 2-stage pipeline

    • Code-compatible with KM4, Optimized for μA-level operation

Memory System

  • On-chip memory: 512KB SRAM

  • External memory (including KGD):

    • QSPI NOR Flash (up to 104MHz)

    • DQ8 DDR mode PSRAM (up to 200MHz)

  • Bus architecture: Multi-layer AXI bus with parallel access

Peripheral Interfaces

  • 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, easy to 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

Security Features

  • Secure boot

  • Arm TrustZone-M security architecture

  • True Random Number Generator (TRNG)

  • Hardware encryption engine (AES/SHA)

  • Flash full-disk/partition encryption

  • Read Protection (RDP) mechanism

  • JTAG/SWD password protection

  • 2KB OTP memory (2K bits available for user)

  • PSA Level-2 certified

Wireless Connectivity

  • Wi-Fi 4 (802.11a/b/g/n)

    • 802.11 a/b/g/n, 1T1R, 2.4GHz/5GHz dual-band

    • 40MHz channel bandwidth, MCS0 ~ MCS7 modulation

    • Antenna diversity

    • WoWLAN power saving:

      • 84μA@2.4GHz (DTIM=10, 3.3V, 25°C)

      • 122μA@5GHz (DTIM=10, 3.3V, 25°C)

  • Bluetooth 5.0 LE

    • LE Coded PHY long-range mode (125kbps/500kbps)

    • Scatternet: 8 masters + 3 slaves

    • Tx Power: -10dBm ~ +10dBm (typical 8dBm)

    • Rx sensitivity: -99dBm@1Mbps

Power Management

  • Dynamic voltage/frequency scaling (1.71V ~ 3.63V)

  • Power modes:

    • Active mode: Full operation (345MHz)

    • Sleep mode: Peripherals or Wi-Fi can wake up the system (<100uA)

    • Deep-Sleep mode: 10.4µA (1.8V, 25°C)

Package and Reliability

  • QFN48 package: 6mm x 6mm

  • QFN68 package: 8mm x 8mm

  • BGA100 package: 5.1mm x 5.1mm

  • Operating voltage:

    • Standard voltage: 2.97V ~ 3.63V

    • Wide-range voltage: 1.71V ~ 3.63V

  • Operating temperature:

    • Standard temperature: -20°C ~ 85°C

    • Wide-range temperature: -40°C ~ 105°C

  • ESD protection: HBM ±3.5kV

Application Scenarios

  • Smart home appliance

  • Line controller

  • Smart door lock

  • Battery camera

  • Smart remote controller

  • Wi-Fi speaker

  • WHC FullMAC NIC

  • BLE gateway

  • Smart POS