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Silicon Labs EFM32TG825F32-D-BGA48R
- Part No.:
- EFM32TG825F32-D-BGA48R
- Manufacturer:
- Silicon Labs
- Category:
- Microcontrollers
- Package:
- 48-VFBGA
- Datasheet:
-
EFM32TG825F32-D-BGA48R.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,635
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Product details
Overview
EFM32TG825F32-D-BGA48R from Silicon Labs is a 32-bit ARM Cortex-M3 microcontroller optimized for ultra-low-power battery-operated systems, featuring 32 kB Flash, 4 kB RAM, hardware AES encryption, 12-bit 1 Msps ADC, and operation down to 0.6 μA in Stop mode (EM3) with RAM retention. It integrates LEUART, LETIMER, PRS, and LCD controller for autonomous sensor monitoring and display in smart metering and industrial automation.
For engineers reviewing the EFM32TG825F32-D-BGA48R datasheet, EFM32TG825F32-D-BGA48R pinout, EFM32TG825F32-D-BGA48R application, or EFM32TG825F32-D-BGA48R equivalent, this page delivers verified technical context, energy-mode current specs, BGA48 package mapping, peripheral reflex system behavior, and validated alternative options for low-energy embedded design.
Technical Context
The EFM32TG825F32-D-BGA48R implements the ARM Cortex-M3 core at up to 32 MHz with 1.25 DMIPS/MHz performance and supports five energy modes (EM0–EM4), including EM2 Deep Sleep with RTC active and EM3 Stop with brown-out detection and full RAM/CPU retention. Its Peripheral Reflex System (PRS) enables CPU-free inter-peripheral signaling between modules like ADC, TIMER, and LEUART.
It features dual clock domains: high-frequency (HFXO/HFRCO up to 32 MHz) and low-frequency (LFXO/ULFRCO/LETIMER-ready), enabling precise timing control across energy modes. Analog subsystem includes 12-bit ADC (1 Msps, 8 SE/4 diff channels), 12-bit DAC (500 ksps), three rail-to-rail op-amps (6.1 MHz GBW), and LESENSE for capacitive or LC sensor monitoring in EM2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3 @ 32 MHz - delivers deterministic real-time control with 1.25 DMIPS/MHz for firmware-intensive edge sensing. |
| Flash / RAM | 32 kB Flash / 4 kB RAM - sufficient for secure bootloader, AES-encrypted firmware, and sensor fusion algorithms with retained state in EM3. |
| Energy Modes | EM3 Stop: 0.6 μA @ 3 V with RAM/CPU retention - enables rapid wake-up (<2 µs) while preserving context for infrequent event-driven operation. |
| ADC | 12-bit, 1 Msps SAR ADC with 8 SE/4 diff inputs - supports high-resolution analog acquisition from temperature, pressure, or current sensors without external signal conditioning. |
| LEUART | Low Energy UART operating from 32.768 kHz clock - sustains 9600 baud communication in EM2, eliminating need for high-frequency oscillator during sleep. |
| AES Accelerator | Hardware AES-128/256 in 54/75 cycles - offloads encryption from CPU, reducing active time and power for secure OTA updates or data logging. |
| Package | BGA48 (5 × 5 mm, 0.5 mm pitch) - compact footprint suitable for space-constrained metering and portable medical devices. |
Pinout & Package
BGA48 package: 5 mm × 5 mm body, 0.5 mm ball pitch, 6 × 6 array with corner balls omitted (48 I/O + power/ground). RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core Power Supply | 1.98–3.8 V main supply; decoupling required per BGA48 layout guidelines to stabilize EM0–EM3 transitions. |
| VSS | Digital Ground | Reference return for digital logic and I/O; must be connected to solid ground plane to minimize noise in ADC/DAC operation. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General Purpose I/O | Configurable push-pull/open-drain with programmable drive strength; support peripheral routing via PRS and alternate functions (USART, I2C, etc.). |
| ACLK, LFXTAL, HFXTAL | Clock Inputs | Support 32.768 kHz crystal (ACLK/LFXTAL) and 1–32 MHz crystal (HFXTAL); enable precise RTC and low-jitter timing across all energy modes. |
| SWDIO / SWCLK | Debug Interface | 2-pin Serial Wire Debug - allows full JTAG-equivalent debug access without dedicated trace pins, critical for field firmware validation. |
| LEUART0_TX / LEUART0_RX | Low-Energy UART I/O | Dedicated pins for EM2-active serial communication; tolerate voltage levels down to 1.98 V, enabling direct interface with 2.0 V sensor nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous PRS Network | Enables ADC-triggered TIMER capture or LEUART wakeup without CPU intervention - reduces active time by >90% in periodic sensor readout. |
| LESENSE Engine | Monitors up to 8 capacitive buttons or LC resonators in EM2 using dedicated analog front-end - eliminates host MCU polling for touch or proximity events. |
| Integrated LCD Controller | Drives up to 8×20 segments with on-chip voltage boost and contrast control - removes external display driver IC and associated BOM cost in utility meters. |
| Hardware AES-128/256 | Encrypts/decrypts 128-bit blocks in ≤54 cycles - accelerates secure boot verification and encrypted sensor log storage with <10 μs latency. |
| Wake-up Time | 2 µs from EM3 to EM0 - ensures sub-millisecond response to external interrupts (e.g., tamper detection or pulse input), meeting ANSI C12.22 timing requirements. |
Applications
| Smart Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Utility-grade water/gas meter with pulse counting, temperature compensation, and RF mesh backhaul. IC Role / Device Role / Timing Role: Primary system controller managing pulse accumulation (PCNT), analog sensor reads (ADC), secure data packaging (AES), and low-power RF interface timing (LEUART/PRS). Use Value: 0.6 μA EM3 current enables 10+ year battery life; integrated LCD driver displays consumption locally without auxiliary power. |
Use Scenario: Wireless vibration/temperature node in predictive maintenance system with local FFT preprocessing. IC Role / Device Role / Timing Role: Edge AI inference accelerator using PRS-synchronized ADC sampling and TIMER-based FFT windowing in EM2. Use Value: Autonomous ADC→DMA→RAM transfer in EM2 cuts average power to 1.2 μA, extending node lifetime beyond 5 years on CR2032. |
| Home Security Panel | Portable Health Monitor |
Use Scenario: Battery-powered door/window sensor with magnetic reed switch, ambient light detection, and BLE beaconing. IC Role / Device Role / Timing Role: Low-energy event manager using VCMP for supply monitoring, ACMP for analog threshold detection, and LEUART for BLE UART bridge. Use Value: Shutoff mode (EM4) draws only 20 nA; wake-up on interrupt preserves battery for >3 years with daily BLE broadcast. |
Use Scenario: Wearable ECG/PPG device requiring analog front-end filtering, motion artifact rejection, and secure health data export. IC Role / Device Role / Timing Role: Signal processor with three op-amps (gain/filter), 12-bit ADC oversampling, and AES-encrypted USB/UART output. Use Value: Rail-to-rail op-amps support single-supply 2.0 V operation; hardware AES ensures HIPAA-compliant data transmission without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-energy microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EFM32TG225F32-D-BGA48 | Same BGA48 package, identical 32 kB Flash/4 kB RAM, but lower max speed (24 MHz vs. 32 MHz) and no LCD controller. | Lacks integrated LCD driver and operates at reduced CPU frequency - suitable for non-display sensor hubs where display is handled externally. | Select when display functionality is unnecessary and cost reduction is prioritized over peak performance headroom. |
| EFM32GG11B820F2048GL120 | ARM Cortex-M4 with FPU, 2048 kB Flash, 512 kB RAM, QFN120 package - significantly higher compute/memory resources and advanced peripherals (USB, SDIO). | Targeted at complex edge AI or motor control; incompatible pinout and power architecture - not drop-in replaceable. | Choose only for next-generation designs requiring floating-point math or multi-protocol connectivity; requires full PCB redesign. |
Compared with EFM32TG225F32-D-BGA48 and EFM32GG11B820F2048GL120, the EFM32TG825F32-D-BGA48R provides optimal balance of ultra-low EM3 current (0.6 μA), integrated LCD, and PRS autonomy for cost-sensitive, display-equipped metering - whereas alternatives trade either display capability or energy efficiency for scale or compute.
Availability
EFM32TG825F32-D-BGA48R is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home security panels, and portable health monitors requiring stable component supply and long-term lifecycle assurance.
Supply support for EFM32TG825F32-D-BGA48R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Silicon Labs is a fabless semiconductor company specializing in low-power wireless and mixed-signal ICs for IoT, industrial, and consumer applications.
The EFM32TG family was designed specifically for battery-powered systems demanding multi-year operation, autonomous peripheral operation, and robust security - with EFM32TG825F32-D-BGA48R targeting compact, display-integrated utility and environmental monitoring devices.
FAQ
What is the minimum supply voltage for EFM32TG825F32-D-BGA48R to operate in EM3 Stop mode?
The EFM32TG825F32-D-BGA48R maintains full EM3 Stop mode functionality-including RAM retention, brown-out detection, and wake-up capability-down to 1.98 V. Below this threshold, the brown-out detector forces reset to prevent unreliable operation. This 1.98 V minimum enables compatibility with aging primary lithium cells in long-life metering deployments.
Does EFM32TG825F32-D-BGA48R support hardware-accelerated SHA or ECC cryptography?
No. The EFM32TG825F32-D-BGA48R includes only hardware AES-128/256 acceleration. SHA and ECC operations must be performed in software using the ARM Cortex-M3 core. For designs requiring certified SHA-256 or ECDSA, consider Silicon Labs' later EFM32GG or EFR32 families which integrate cryptographic co-processors.
Can the integrated LCD controller in EFM32TG825F32-D-BGA48R drive static or multiplexed segments?
Yes. The EFM32TG825F32-D-BGA48R LCD controller supports both static (1:1 duty) and multiplexed (up to 1:8 duty) segment driving. It includes programmable bias voltage generation, internal charge pump for voltage boosting above VDD, and automatic frame refresh in EM2 - enabling direct drive of common utility meter LCD glass without external components.
How many independent PWM outputs can EFM32TG825F32-D-BGA48R generate simultaneously?
The EFM32TG825F32-D-BGA48R supports up to six independent PWM outputs: two 16-bit Timer/Counter modules, each with three compare/capture channels configurable as PWM outputs. These can operate concurrently with different frequencies and duty cycles, enabling multi-channel motor control or LED dimming without CPU load.
Is the BGA48 package of EFM32TG825F32-D-BGA48R compatible with standard reflow profiles?
Yes. The EFM32TG825F32-D-BGA48R uses a standard Pb-free, RoHS-compliant BGA package qualified for IPC/JEDEC J-STD-020D reflow profiles. Peak temperature must not exceed 260 °C for ≤60 seconds, and moisture sensitivity level is MSL3 - requiring bake-out if exposed to ambient >30°C/60% RH for >168 hours before reflow.
EFM32TG825F32-D-BGA48R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 48-VFBGA
- Series:
- Tiny Gecko
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, SmartCard, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM
- Number of I/O:
- 37
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.98V ~ 3.8V
- Data Converters:
- A/D 4x12b SAR; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
EFM32TG825F32-D-BGA48R FAQ
1.How can I place an order for EFM32TG825F32-D-BGA48R through Aetrix?
Please submit a Request for Quotation (RFQ) for EFM32TG825F32-D-BGA48R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for EFM32TG825F32-D-BGA48R reliable?
The price and inventory of EFM32TG825F32-D-BGA48R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFM32TG825F32-D-BGA48R is usually 5 days.
3.What payment methods are accepted for EFM32TG825F32-D-BGA48R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFM32TG825F32-D-BGA48R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFM32TG825F32-D-BGA48R?
EFM32TG825F32-D-BGA48R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFM32TG825F32-D-BGA48R order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for EFM32TG825F32-D-BGA48R?
For technical support, including EFM32TG825F32-D-BGA48R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFM32TG825F32-D-BGA48R requirements.
6.How does Aetrix verify that EFM32TG825F32-D-BGA48R is sourced from the original manufacturer or authorized distributors?
All EFM32TG825F32-D-BGA48R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that EFM32TG825F32-D-BGA48R meets industry standards.
7.What is the process for return or replacement of EFM32TG825F32-D-BGA48R?
All EFM32TG825F32-D-BGA48R units undergo pre-shipment inspection (PSI). If there is an issue with EFM32TG825F32-D-BGA48R, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The EFM32TG825F32-D-BGA48R part is unused and in its original packaging.
Return procedure for EFM32TG825F32-D-BGA48R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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