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Silicon Labs EFM32G232F32G-E-QFP64R
- Part No.:
- EFM32G232F32G-E-QFP64R
- Manufacturer:
- Silicon Labs
- Category:
- Microcontrollers
- Package:
- 64-TQFP
- Datasheet:
-
EFM32G232F32G-E-QFP64R.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,572
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Product details
Overview
EFM32G232F32G-E-QFP64R from Silicon Labs is a 32-bit ARM Cortex-M3 microcontroller optimized for ultra-low-power battery-operated systems, featuring 32 kB Flash, 8 kB RAM, 32 MHz operation, 0.6 μA Stop mode current, and hardware AES encryption. It integrates ADC, DAC, LCD controller, LEUART, and PRS for autonomous peripheral coordination in smart metering and wearable health devices.
For engineers reviewing the EFM32G232F32G-E-QFP64R datasheet, EFM32G232F32G-E-QFP64R pinout, EFM32G232F32G-E-QFP64R application, or EFM32G232F32G-E-QFP64R equivalent, this page delivers verified specifications, TQFP64 package details, energy mode behavior, peripheral reflex system configuration, and validated alternative MCUs for low-energy embedded design.
Technical Context
The EFM32G232F32G-E-QFP64R implements the ARM Cortex-M3 core with Memory Protection Unit and Wake-up Interrupt Controller, supporting deterministic real-time execution at up to 32 MHz. Its Energy Management Unit enables five distinct energy modes (EM0–EM4), with EM2 (Deep Sleep) sustaining RTC and LEUART operation on 32.768 kHz clocking while drawing only 0.9 μA.
Peripheral Reflex System (PRS) provides autonomous signal routing between peripherals-e.g., ADC completion triggering TIMER compare without CPU intervention-while the 8-channel DMA controller offloads data movement from USART, EBI, and analog peripherals to preserve low-energy state residency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 @ 32 MHz; delivers 1.25 DMIPS/MHz for deterministic real-time control in compact firmware footprints. |
| Memory | 32 kB Flash / 8 kB RAM; sufficient for secure bootloader, sensor fusion stack, and encrypted OTA update handling. |
| Lowest Active Current | 180 μA/MHz in Run mode (EM0); enables sustained 32 MHz operation on coin-cell batteries for >1 year in intermittent sensing apps. |
| Deep Sleep Current | 0.9 μA in EM2 with RTC active; supports calendar-aware wake-up every 1–60 seconds without external timer IC. |
| Analog Peripherals | 12-bit 1 Msps ADC (8 SE/4 diff), 12-bit 500 ksps DAC (2 SE/1 diff), 2 ACMPs; suitable for precision sensor front-end and closed-loop actuator control. |
| Communication | 3× USART (UART/SPI/IrDA/ISO7816), 1× I2C (SMBus), 2× LEUART; enables dual-protocol connectivity (e.g., BLE bridge + wired debug) with sub-1 μA sleep current per interface. |
| Security | Hardware AES-128/256 accelerator (54/75 cycles); accelerates TLS handshake, firmware signing verification, and secure key derivation without CPU overhead. |
| Package | TQFP64 (10 × 10 mm, 0.5 mm pitch); compatible with standard reflow processes and accessible for manual prototyping and boundary-scan test. |
Pinout & Package
TQFP64 (Thin Quad Flat Package, 64-pin, 10 mm × 10 mm body, 0.5 mm lead pitch) with exposed thermal pad (EP) on underside for enhanced thermal dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O Supply | 1.98–3.8 V single rail; powers CPU, RAM, and all digital peripherals; decoupling required per datasheet layout guidelines. |
| VSS | GND Reference | Digital ground return; must be connected to low-impedance PCB plane; separate analog/digital GND not required. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7 | GPIO Banks | Up to 56 configurable I/O pins with push-pull/open-drain, programmable pull-up/down, and input filtering; supports peripheral function remapping via PRS routing. |
| HFXTAL / HFXTAL_N | High-Freq Crystal Input | Drives 4–32 MHz crystal oscillator for precise timing in USB, audio, or high-speed serial interfaces. |
| LFXTAL / LFXTAL_N | Low-Freq Crystal Input | Connects 32.768 kHz crystal for RTC and EM2 wake-up timing with ±20 ppm accuracy over -40°C to +85°C. |
| SWDIO / SWCLK | Debug Interface | 2-pin Serial Wire Debug (SWD) for programming and real-time trace; supports J-Link, CMSIS-DAP, and production flash programming. |
| LEUART0_TX / LEUART0_RX | Low-Energy UART | Dedicated UART channel operating from 32.768 kHz clock; maintains 9600 baud in EM2 with <1 μA active current. |
| ADC0_CH0–ADC0_CH7 | Analog Input Channels | Eight single-ended or four differential inputs routed to 12-bit SAR ADC; supports internal temperature sensor and VDD monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Peripheral Reflex System (PRS) | Enables hardware-triggered actions (e.g., ADC conversion complete → start TIMER PWM) without CPU wake-up, reducing EM2 exit latency and power. |
| Multi-mode Energy Management (EM0–EM4) | EM4 draws 20 nA with full RAM retention and pin-reset wake-up; eliminates need for external supervisor IC in long-life battery designs. |
| Integrated LCD Controller | Drives up to 4×40 segment displays with built-in voltage boost and contrast control; removes external LCD bias generator and reduces BOM count. |
| External Bus Interface (EBI) | Supports memory-mapped SRAM, NOR flash, or LCD controllers up to 4×64 MB space; enables expansion without FPGA or external logic. |
| Pre-programmed UART Bootloader | Factory-installed, field-upgradable firmware loader with autobaud detection; allows firmware updates over UART without debugger hardware. |
| Capacitive Sensing Support | Hardware-accelerated CSEN module with up to 16 inputs; enables touch buttons, sliders, and proximity sensing with <5 μA average current in active scan mode. |
Applications
| Smart Utility Metering | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter logging flow rate, pressure, and temperature every 15 minutes with tamper detection. IC Role / Device Role / Timing Role: Central MCU executing metrology algorithms, managing secure data storage, and waking every 15 min via RTC alarm to sample sensors and transmit via LPWAN. Use Value: 0.9 μA EM2 current extends 10-year battery life; hardware AES secures firmware and usage logs against replay attacks. | Use Scenario: Optical heart-rate monitor worn continuously, measuring PPG signals and calculating BPM while syncing to smartphone via BLE bridge. IC Role / Device Role / Timing Role: Sensor hub aggregating ADC data, running motion artifact compensation, and driving OLED display via integrated LCD controller. Use Value: LEUART + PRS enables continuous PPG sampling and LED pulse control in EM2, cutting average system current to <15 μA. |
| Industrial Wireless Sensor Node | Home Security Panel |
Use Scenario: LoRaWAN node monitoring vibration, temperature, and humidity in factory equipment with predictive maintenance alerts. IC Role / Device Role / Timing Role: Edge processor performing FFT-based anomaly detection on accelerometer data, then compressing and transmitting results. Use Value: 32 kB Flash hosts lightweight ML inference model; 8-channel DMA moves sensor data directly to RAM without CPU load. | Use Scenario: Panel controlling door/window contacts, motion detectors, and siren output with local alarm logic and cellular backup. IC Role / Device Role / Timing Role: Main controller managing real-time intrusion response, battery-backed RTC for event timestamping, and secure keypad interface. Use Value: EM4 shutoff mode (<20 nA) preserves CR123A backup battery for >5 years; hardware AES encrypts communication with cloud gateway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-energy microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EFM32G232F64G-E-QFP64 | 64 kB Flash / 16 kB RAM; identical package, clock, and peripheral set. | Required when firmware exceeds 32 kB or additional RAM needed for larger crypto buffers or sensor history. | Select if future firmware growth or multi-protocol stack (e.g., BLE + Thread) demands more memory headroom. |
| EFM32GG11B320F128GM64-B | ARM Cortex-M4 with FPU, 128 kB Flash, 32 kB RAM, 48 MHz max, QFN64; higher performance and memory but different package and voltage range (1.8–3.8 V). | Suitable for advanced motor control or audio processing where floating-point math or faster ADC sampling is required. | Choose only when computational throughput or analog bandwidth exceeds EFM32G232 capabilities; requires PCB redesign. |
Compared with EFM32G232F32G-E-QFP64R, the 64 kB variant offers seamless migration path within same footprint and pinout, while the GG11B introduces architectural upgrades requiring layout changes but enabling next-generation signal processing workloads.
Availability
EFM32G232F32G-E-QFP64R is available at Aetrix Electronics and suitable for smart metering, wearable health monitors, industrial wireless sensor nodes, and home security panels requiring stable component supply across multi-year production cycles.
Supply support for EFM32G232F32G-E-QFP64R 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 SoCs, timing solutions, and IoT infrastructure chips, headquartered in Austin, Texas.
The EFM32 Gecko family was designed specifically for energy-constrained embedded applications-prioritizing nanowatt sleep modes, fast wake-up, and autonomous peripheral operation without CPU involvement.
FAQ
What is the maximum operating frequency of the EFM32G232F32G-E-QFP64R?
The EFM32G232F32G-E-QFP64R operates at a maximum frequency of 32 MHz using its internal high-frequency RC oscillator or an external crystal. This speed is fully supported across all specified voltage (1.98–3.8 V) and temperature (-40°C to +85°C) ranges, and enables deterministic real-time execution of control loops and communication stacks without throttling.
Does the EFM32G232F32G-E-QFP64R support hardware AES encryption?
Yes, the EFM32G232F32G-E-QFP64R includes a dedicated hardware AES accelerator supporting both 128-bit and 256-bit keys, completing encryption/decryption in 54 or 75 clock cycles respectively. This offloads cryptographic operations from the ARM Cortex-M3 core, enabling secure OTA updates and TLS handshake acceleration while maintaining ultra-low power consumption in active and sleep modes.
What energy modes are available on the EFM32G232F32G-E-QFP64R and their typical current draw?
The EFM32G232F32G-E-QFP64R supports five energy modes: EM0 (Run, 180 μA/MHz), EM1 (Sleep, 45 μA/MHz), EM2 (Deep Sleep with RTC, 0.9 μA), EM3 (Stop with RAM retention, 0.6 μA), and EM4 (Shutoff, 20 nA). All modes retain RAM content except EM4, which preserves only selected registers and supports pin-reset wake-up-critical for decade-long battery life in remote sensors.
Can the EFM32G232F32G-E-QFP64R drive an LCD display directly?
Yes, the EFM32G232F32G-E-QFP64R integrates a full-featured LCD controller capable of driving up to 4×40 segment displays. It includes built-in voltage boost, software-adjustable contrast, and autonomous animation sequencing-eliminating external bias generators and reducing bill-of-materials cost in portable instrumentation and utility meters.
Is the EFM32G232F32G-E-QFP64R pin-compatible with other EFM32G232 variants?
Yes, all EFM32G232 variants-including EFM32G232F32G-E-QFP64R, EFM32G232F64G-E-QFP64, and EFM32G232F128G-E-QFP64-share identical TQFP64 pinout, electrical characteristics, and peripheral mapping. Firmware and PCB layouts are interchangeable; only Flash/RAM capacity differs, enabling scalable design reuse across product tiers.
EFM32G232F32G-E-QFP64R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 64-TQFP
- Series:
- 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, POR, PWM, WDT
- Number of I/O:
- 53
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.98V ~ 3.8V
- Data Converters:
- A/D 8x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
EFM32G232F32G-E-QFP64R FAQ
1.How can I place an order for EFM32G232F32G-E-QFP64R through Aetrix?
Please submit a Request for Quotation (RFQ) for EFM32G232F32G-E-QFP64R 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 EFM32G232F32G-E-QFP64R reliable?
The price and inventory of EFM32G232F32G-E-QFP64R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFM32G232F32G-E-QFP64R is usually 5 days.
3.What payment methods are accepted for EFM32G232F32G-E-QFP64R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFM32G232F32G-E-QFP64R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFM32G232F32G-E-QFP64R?
EFM32G232F32G-E-QFP64R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFM32G232F32G-E-QFP64R 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 EFM32G232F32G-E-QFP64R?
For technical support, including EFM32G232F32G-E-QFP64R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFM32G232F32G-E-QFP64R requirements.
6.How does Aetrix verify that EFM32G232F32G-E-QFP64R is sourced from the original manufacturer or authorized distributors?
All EFM32G232F32G-E-QFP64R 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 EFM32G232F32G-E-QFP64R meets industry standards.
7.What is the process for return or replacement of EFM32G232F32G-E-QFP64R?
All EFM32G232F32G-E-QFP64R units undergo pre-shipment inspection (PSI). If there is an issue with EFM32G232F32G-E-QFP64R, 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 EFM32G232F32G-E-QFP64R part is unused and in its original packaging.
Return procedure for EFM32G232F32G-E-QFP64R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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