EFM32ZG222F16-QFP48 - 24MHz 16KB MCU | Silicon Labs
MPN: EFM32ZG222F16-QFP48 ✗ End of LifeEFM32ZG222F16-QFP48 Overview
A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, working RAM, and peripherals into one compact package. The ARM Cortex-M0+ architecture belongs to the embedded processor hierarchy and is commonly used for control-oriented products requiring deterministic operation and efficient code execution. Within the EFM32 product family, the Zero Gecko platform emphasizes low-power sensing and control rather than high-performance compute.
The EFM32ZG222F16-QFP48 combines a 24 MHz Cortex-M0+ core with 16 kB Flash and 4 kB RAM. Its 37 digital I/O pins provide connections for sensors, indicators, actuators, and control signals. Two 16-bit timers support periodic timing, event counting, and basic control-loop tasks. The manufacturer describes the platform as incorporating low-energy techniques, fast wake-up times, and energy-saving modes for battery-powered and other energy-conscious equipment.
The device family also emphasizes autonomous peripherals, analog integration, and low power consumption. According to the Silicon Labs Zero Gecko datasheet, Zero Gecko devices can consume as little as 0.5 microamp in Stop mode and 114 microamps per megahertz in Run mode. These figures make the MCU suitable for systems that spend substantial time between infrequent user interactions or sensor events and must maintain a low average power budget.
Typical uses include connected utility meters, water and gas monitoring, industrial sensing nodes, compact environmental monitors, and low-power embedded controls. In these systems, the Cortex-M0+ processor handles local logic while the integrated timers and digital I/O manage periodic sampling, status indicators, and external interfaces. Battery operation benefits from the documented Stop and Run current characteristics, although the final battery life depends on the complete firmware duty cycle, sensor load, and supply circuitry.
Designers should verify the exact pin multiplexing, peripheral assignments, and board requirements against the manufacturer datasheet before layout. Decoupling, grounding, programming access, clock configuration, and unused-pin treatment are especially important in a 48-pin mixed-signal embedded design. The supplied web evidence does not include a complete 48-pin assignment, so this page does not reproduce an inferred pinout or fabricate individual signal names.
This page consolidates the verified manufacturer and distributor data into an application-oriented overview of the EFM32ZG222F16-QFP48. It also separates confirmed memory, speed, package, and low-power characteristics from unverified attributes and explains why fewer drop-in alternatives are listed than normally required. Engineers can use the comparison table, practical design notes, and sourcing questions to evaluate the MCU without mistaking incomplete public snippets for complete datasheet coverage.
Drop-in alternatives for EFM32ZG222F16-QFP48 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
EFM32ZG222F16-B-QFP48
✅ Drop-In📋 Reference alternative (not in catalog)
EFM32ZG222F32-QFP48T
✅ Drop-In📋 Reference alternative (not in catalog)
EFM32ZG222F16-QFP48 Maximum Ratings & Electrical Characteristics
| Product Type | ARM Cortex-M0+ 32-bit microcontroller |
| Series | EFM32 Zero Gecko |
| Maximum CPU Speed | 24 MHz |
| Flash Memory | 16 kB |
| Flash Organization | 16K x 8 |
| RAM | 4 kB |
| Digital I/O Pins | 37 |
| Timer Count | 2 |
| Timer Resolution | 16-bit |
| Supply Voltage | 1.98 V to 3.8 V |
| Supported Supply Configuration | 2.5 V / 3.3 V |
| Package | 48-pin TQFP (7 x 7 mm) |
| Mounting Type | Surface mount |
| Stop Mode Current | 0.5 microamp |
| Run Mode Current | 114 microamps/MHz |
| Low-Power Features | Fast wake-up and energy-saving modes |
| RoHS Status | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
EFM32ZG222F16-QFP48 48-pin tqfp (7 x 7 mm) Pin Configuration Guide
Pin configuration for EFM32ZG222F16-QFP48 (48-pin tqfp (7 x 7 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EFM32ZG222F16-QFP48.
Refer to the datasheet for full pin configuration.
Typical Applications
EFM32ZG222F16-QFP48 is suitable for 6 applications: Smart Water Metering, Gas and Energy Monitoring, Industrial Environmental Sensing, Battery-Powered IoT Node, Portable Medical Sensor Interface, Home Automation Controller.
Smart Water Metering
The EFM32ZG222F16-QFP48 fits compact water-metering controllers because it combines a 24 MHz ARM Cortex-M0+ core with 16 kB Flash, 4 kB RAM, and 37 digital I/O pins. Its two 16-bit timers can support periodic pulse counting, sampling intervals, and valve or alarm timing. The Zero Gecko family's documented Stop-mode current of 0.5 microamp and Run-mode figure of 114 microamps per megahertz are useful for duty-cycled designs. The MCU can execute metering logic while most peripherals remain idle, although the complete battery-life calculation must include the sensor, communications module, regulator, and wake frequency.
Recommended
Gas and Energy Monitoring
The EFM32ZG222F16-QFP48 is suitable for gas, energy, and compact utility-monitoring nodes where local control must coexist with a low average power budget. Its 16 kB Flash provides nonvolatile storage for application firmware and parameters, while 4 kB RAM supports acquisition buffers and communications state. The 37 digital I/O pins permit connection to sensor outputs, status flags, and actuators, and the two 16-bit timers help establish stable measurement windows. According to the Silicon Labs manufacturer datasheet, Zero Gecko devices can reach 0.5 microamp in Stop mode, making periodic measurement and long sleep intervals practical in meter-oriented equipment.
Recommended
Industrial Environmental Sensing
The EFM32ZG222F16-QFP48 can serve as the control core in industrial environmental sensors that periodically measure temperature, humidity, gas concentration, or equipment status. Its 24 MHz Cortex-M0+ core provides sufficient performance for filtering, threshold evaluation, event logging, and communications supervision, while 4 kB RAM accommodates bounded working buffers. Two 16-bit timers support sensor timing and periodic sampling, and the 37 digital I/O pins simplify connection to discrete sensors and indicators. The family's fast-wake-up and energy-saving features are valuable when the node wakes briefly and returns to a low-power state, though EMC and ingress-protection requirements remain board-level concerns.
Recommended
Battery-Powered IoT Node
The EFM32ZG222F16-QFP48 is appropriate for a small battery-powered IoT node that performs local sensing and occasionally communicates with a remote gateway. The 16 kB Flash and 4 kB RAM are adequate for compact firmware, while autonomous peripherals and fast wake-up behavior help reduce the time the processor remains active. The documented 0.5 microamp Stop current provides a useful foundation for an energy budget, but an engineer should add radio-current peaks, regulator quiescent current, and sensor consumption before claiming battery life. The 48-pin TQFP also offers ample digital connectivity for status LEDs, pushbuttons, and external sensor interfaces.
Recommended
Portable Medical Sensor Interface
The EFM32ZG222F16-QFP48 can support the control side of a portable medical sensing device when the design remains within the MCU's 16 kB Flash, 4 kB RAM, and 2.5 V or 3.3 V supply constraints. Its 37 digital I/O pins can be divided among sensors, indicators, user controls, and a serial communications interface, while the two 16-bit timers support measurement cadence. Low-power behavior is useful in wearables and handheld instruments that spend most of their time idle. Medical suitability cannot be inferred from the MCU alone: the final device must address applicable risk management, signal isolation, accuracy, and regulatory requirements beyond the electrical specifications of the microcontroller.
Recommended
Home Automation Controller
The EFM32ZG222F16-QFP48 can control a home-automation subassembly that coordinates switches, sensors, indicators, and low-power peripherals. Its 37 digital I/O pins provide broad connectivity for the 48-pin TQFP design, while 16 kB Flash is sufficient for compact state-machine firmware and 4 kB RAM for buffers and protocol state. The 24 MHz Cortex-M0+ core supports responsive control logic without requiring a higher-performance MCU. Its low-power operating modes are particularly useful in always-installed controllers that spend long periods waiting for user input or scheduled events. External relay drivers, isolation, and mains-safety design remain separate hardware responsibilities.
Recommended
Recommended Products Summary
Engineering reference data for EFM32ZG222F16-QFP48 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EFM32ZG222F16-B-QFP48 | EFM32ZG222F32-QFP48T |
|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Flash Memory | 16 kB | 16 kB | 32 kB |
Key Differentiators
- Exact memory configuration in the closest related suffix (vs EFM32ZG222F16-B-QFP48)
- Lower Flash demand for compact firmware (vs EFM32ZG222F32-QFP48T)
- Documented low-power platform (vs EFM32ZG222F32-QFP48T)
Design Notes
Calculate the energy budget using the documented 0.5 microamp Stop-mode current and 114 microamps per megahertz Run-mode current, then add the active current of every radio, sensor, and regulator. The microcontroller can spend most of its time stopped, but wake frequency and the duration of each processing burst often dominate the average load. Verify the selected 2.5 V or 3.3 V rail against the complete EFM32ZG electrical limits before adding external loads.
Place all required bypass capacitors close to their associated supply and ground pins, and provide a low-impedance return path for each switching or high-current peripheral. The 48-pin TQFP footprint has fine-pitch leads, so inspect assembly clearances and solderability under the board manufacturer's process rules. Because the supplied evidence does not provide a verified pin map, use the official package drawing and land pattern rather than relying on generic QFP examples.
Separate analog sensor inputs, sensitive timing signals, and high-speed communication routes from switching nodes and power-converter loops. Keep ground returns continuous and use the exposed board area for low-frequency return currents rather than routing sensitive signals beneath a noisy regulator. Confirm the alternate-function mux and peripheral pin assignments in the manufacturer datasheet before assigning the 37 digital I/O pins to external circuitry.
Do not treat a 48-pin TQFP package as proof of automatic software compatibility. The EFM32ZG222F16-B-QFP48 appears to match the target's 48-pin 7 x 7 mm package and core resources, but its ordering suffix must still be checked against the Silicon Labs ordering table. Likewise, EFM32ZG222F32-QFP48T has more Flash, so application code and resource allocation should be reviewed before substitution.
Compliance Information
The supplied verified snippets do not explicitly state the target part's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from the current manufacturer product documentation or distributor declaration.
