MediaTek MT2523D/MT2523G IoT Wireless Connectivity

The MediaTek MT2523 product family, comprising the MT2523D and MT2523G, is built around a highly integrated System-in-Package (SiP). This SiP includes a microcontroller unit (MCU), a low-power Global Navigation Satellite System (GNSS) receiver (in MT2523G), dual-mode Bluetooth, and a power management unit (PMU).

The MCU is an ARM Cortex-M4 with a floating-point unit, integrated with 4MB of PSRAM and 4MB of flash memory. The MT2523 also supports various interfaces, including UART, I2C, SPI, I2S, PWM, SDIO, MSDC, USB, PCMIF, ADC, and dual digital microphones.

The GNSS companion chip is a multi-GNSS RF SOC designed for high sensitivity, accuracy, and fast Time-to-First-Fix (TTFF) with minimal power consumption. It supports multiple location and navigation systems such as GPS, GLONASS, GALILEO, BEIDOU, SBAS ranging (WAAS, EGNOS, GAGAN, MSAS), QZSS, DGPS (RTCM), and Assisted GPS (A-GPS). It also features up to 12 multi-tone active interference cancellers.

The Bluetooth subsystem supports both Bluetooth 2.1 and Bluetooth 4.2 Low Energy dual modes, encompassing the Bluetooth radio, baseband, and link controller.

The display component supports MIPI-DSI and serial interfaces. It offers 2D capabilities with true color, per-pixel alpha channel, and anti-aliasing fonts. It also supports 1-bit indexed color to conserve memory and processing power. The camera component supports DDR mode with a maximum clock rate of 48 MHz, up to VGA resolution.

BENEFITS

• High integration of RF, MCU, and Memory.
• Low power mode with Real-Time Clock (RTC).
• Supports multiple frequency and voltage modes for extended battery life and maintained high performance.
• Fast switching time from sleep to active mode, under 10 µs.

The system operates with a power supply ranging from 3V to 4.8V.

Diagram Description: The block diagrams illustrate the MT2523D and MT2523G chips. Both feature an ARM Cortex-M4F MCU, 4MB RAM, 4MB Flash, and a 96-bit eFuse. They include a PMU, SYS CLK, and RTC. Connectivity interfaces like D-MIC, PCM, UART, I2C, I2S, SPI, ADC, and GPIOs are shown. The MT2523G additionally includes a GNSS block. Both diagrams show connections for a 26MHz crystal oscillator and an optional 32KHz crystal.

TARGET APPLICATIONS

• Tracker
• Smart Watch
• Smart Gadget
• Robot
• Sensor Gateway/Node

FEATURES

Platform

• ARM Cortex M4 with floating-point MCU.
• Embedded 4MB + 160kB SRAM and 4MB flash.
• 25 DMA channels.
• Low power RTC mode with 32 kHz crystal support.
• Dual mode Bluetooth or Bluetooth Low Energy (LE) with high TX power and excellent RX sensitivity for optimal coverage.
• Supports high battery voltage (up to 4.8V) for extended battery life.
• Multiple frequency and voltage modes for balancing low power consumption and computing power: High speed (1.3V, 208MHz), Full speed (1.1V, 104MHz), Low speed (0.9V, 26MHz).
• Low power crystal oscillator clock sources consume as little as 40 µA.

Connectivity

• UART, I2C, SPI, I2S, PWM, SDIO, MSDC, USB, PCMIF, ADC, dual digital MIC.

GNSS (MT2523G only)

• Supports GPS, GLONASS, GALILEO, BEIDOU.
• Supports multi-GNSS including QZSS, SBAS ranging.
• Supports WAAS/EGNOS/MSAS/GAGAN.
• Features 12 multi-tone active interference cancellers (ISSCC2011 award winner).
• RTCM ready.
• Includes indoor and outdoor multi-path detection and compensation.
• Supports FCC E911 compliance and A-GPS.
• Maximum fixed update rate up to 10 Hz.

Bluetooth

• Bluetooth specification 2.1+EDR.
• Bluetooth 4.2 LE.
• Integrated BALUN and PA.
• Scatternet support: Up to 7 piconets simultaneously with background inquiry or page scan.
• Up to 7 simultaneous active ACL links.
• Supports SCO and eSCO links with retransmission.
• Channel quality driven data rate adaptation.
• Channel assessment for AFH (Adaptive Frequency Hopping).

Display

• DBI interface: Supports simultaneous connection to 2 serial LCD modules with a maximum resolution of 320 x 320 pixels.
• DSI interface: Supports command modes, ultra-low power mode, and a maximum resolution of 480x320 (HVGA) at 30fps.

Technology and Package

• Highly integrated 55nm ultra-low power technology.
• MT2523D: 6.2 mm x 5.8 mm 165-ball VFBGA package with SiP Serial Flash and PSRAM.
• MT2523G: 9.2 mm x 6 mm 242-ball VFBGA package with SiP Serial Flash, PSRAM, and GNSS.

© 2015 MediaTek Inc.