EFM32TG11B120F128GM32-BR - 48MHz Cortex-M0+ 128KB Flash MCU | Silicon Labs
料号： EFM32TG11B120F128GM32-BR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.68 | $268.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $1.94 | $1,940.00 |
EFM32TG11B120F128GM32-BR 概述
A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, and a rich set of on-chip peripherals such as timers, ADC, communication controllers, and GPIO. The Cortex-M0+ is the most energy-efficient ARM core from Arm Holdings, optimized for deterministic real-time response and minimal gate count. The Tiny Gecko 1 family further layers Silicon Labs' LESENSE, low-energy timer, and EMU (Energy Management Unit) features on top of the Cortex-M0+ to deliver energy-sensitive IoT endpoints that wake, sense, transmit, and return to deep sleep within milliseconds.
Key features of this variant include 128 KB flash, 32 KB RAM, a 32-pin QFN package, supply voltage of 1.8 V to 3.8 V, and 24 digital I/O pins. The integrated DC-DC regulator and the broad peripheral mix (ADC, DAC, I2C, SPI, UART, USB, low-energy UART, and timers) make it well suited to battery-powered wireless sensor nodes, wearable health patches, and industrial HVAC controls.
Technically, the part is built around a 32-bit ARM Cortex-M0+ core with hardware single-cycle multiplier, supported by a peripheral reflex system that lets DMA, GPIO, and timers collaborate without CPU intervention. The energy-friendly design includes five energy modes (EM0-EM4) with sub-microamp deep-sleep current, hardware crypto (AES-128/256), and a true random number generator (TRNG).
Typical applications include IoT sensor endpoints, BLE-enabled beacons, wearable fitness bands, smart-home sensor hubs, industrial HVAC thermostats, battery-powered metering, and remote controls. The wide 1.8-3.8 V supply range simplifies single-cell Li-ion or 2x AA battery designs.
When designing with this part, pay attention to the DC-DC inductor selection (the on-chip DC-DC needs an external 10 uH inductor) and the QSPI loading for any external flash expansion. The 32-pin QFN footprint is compact but leaves only 24 GPIO; engineers needing more I/O should step up to the QFP-64 or QFN-64 variants in the same family.
This page synthesizes distributor pricing, drop-in alternatives within the same QFN-32 footprint, and practical low-energy design guidance not found in the manufacturer datasheet alone.
直接替换替代料： EFM32TG11B120F128GM32-BR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EFM32TG11B120F128GM32-BR （相同外形与封装尺寸） ——差异在于 Core, Operating Temperature, RAM Size, Supply Voltage (Vcc/Vdd).
快速对比工具——选择替代料号进行并排对比：
EFM32TG11B120F128GM32-B
✅ 直接替换📋 参考替代料（不在目录中）
EFM32TG11B120F128GM32
✅ 直接替换📋 参考替代料（不在目录中）
EFM32TG11B100F128GM32-BR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
EFM32TG11B200F128GM32-BR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
EFM32TG11B120F64GM32-BR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
EFM32G200F64G-E-QFN32R
✅ 直接替换✓ 有现货
$2.32 / 个
查看数据手册 →EFM32TG11B120F128GM32-BR 最大额定值与电气特性
| Core | ARM Cortex-M0+ |
| Core Size | 32-Bit Single-Core |
| Maximum Clock Speed | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| RAM Size | 32 KB |
| Supply Voltage (Vcc/Vdd) | 1.8 V to 3.8 V |
| 工作温度 | -40 C to +85 C (TA) |
| Digital I/O Pins | 24 |
| 封装 / 外壳 | 32-QFN (5x5 mm) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Connectivity | I2C, SPI, UART, USB, Low-Energy UART |
| Peripherals | DMA, PWM, WDT, Brown-out Detect, POR |
| Data Converters | 12-bit ADC, 12-bit DAC |
| Security | AES-128/256, True Random Number Generator (TRNG) |
| RoHS 状态 | Compliant |
EFM32TG11B120F128GM32-BR 引脚配置
| 引脚 1 | VDD — Digital supply voltage (1.8 V to 3.8 V) |
| 引脚 2 | PA0 — GPIO / I2C0 SDA |
| 引脚 3 | PA1 — GPIO / I2C0 SCL |
| 引脚 4 | PA2 — GPIO / USART0 TX |
| 引脚 5 | PA3 — GPIO / USART0 RX |
| 引脚 6 | PA4 — GPIO / TIMER0 CC0 |
| 引脚 7 | PA5 — GPIO / TIMER0 CC1 |
| 引脚 8 | VSS — Ground |
| 引脚 9 | PA6 — GPIO / LEUART0 TX |
| 引脚 10 | PA7 — GPIO / LEUART0 RX |
| 引脚 11 | PB0 — GPIO / ADC0 CH0 |
| 引脚 12 | PB1 — GPIO / ADC0 CH1 |
| 引脚 13 | PB2 — GPIO / ADC0 CH2 / DAC0 OUT |
| 引脚 14 | PB3 — GPIO / ADC0 CH3 |
| 引脚 15 | PB4 — GPIO / TIMER1 CC0 |
| 引脚 16 | PB5 — GPIO / TIMER1 CC1 |
| 引脚 17 | VSS — Ground |
| 引脚 18 | PB6 — GPIO / I2C1 SDA |
| 引脚 19 | PB7 — GPIO / I2C1 SCL |
| 引脚 20 | PC0 — GPIO / USART1 TX |
| 引脚 21 | PC1 — GPIO / USART1 RX |
| 引脚 22 | PC2 — GPIO / TIMER2 CC0 |
| 引脚 23 | PC3 — GPIO / TIMER2 CC1 |
| 引脚 24 | PC4 — GPIO / CMU CLK OUT |
| 引脚 25 | PC5 — GPIO |
| 引脚 26 | RESETn — Reset input, active low |
| 引脚 27 | SWDIO — Serial Wire Debug I/O |
| 引脚 28 | SWCLK — Serial Wire Debug Clock |
| 引脚 29 | VDD_DCDC — DC-DC converter supply |
| 引脚 30 | DCDC_INDUCTOR — DC-DC inductor connection |
| 引脚 31 | VSS — Ground |
| 引脚 32 | VSS — Ground (thermal pad) |
典型应用
EFM32TG11B120F128GM32-BR 适用于 6 应用s: Battery-Powered IoT Sensor Endpoints, Wearable Fitness and Health Patches, Smart Home Sensor Hubs, Industrial HVAC Thermostats, Remote Controls and BLE Beacons, Battery-Powered Metering and Data Loggers.
Battery-Powered IoT Sensor Endpoints
The EFM32TG11B120F128GM32-BR's sub-microamp deep-sleep current and 2 microsecond wake-up time allow wireless sensor nodes to run for years on a coin-cell battery. The 48 MHz Cortex-M0+ core delivers enough processing throughput for periodic sensor reads and BLE beacons, while 128 KB of flash holds a full IoT connectivity stack plus application code. The 1.8-3.8 V supply window directly accommodates 2x AA alkaline or regulated Li-ion rails without additional level shifters. Silicon Labs reference designs pair this MCU with the EFR32 radio family for complete wireless sensor nodes.
推荐
Wearable Fitness and Health Patches
The compact 32-QFN (5x5 mm) footprint and ultra-low energy modes make the EFM32TG11B120F128GM32-BR well suited to wearable fitness bands and disposable health patches. The integrated 12-bit ADC reads optical heart-rate and temperature sensors directly, while hardware AES-128/256 secures biometric data at rest and during BLE transmission. The 24 GPIO pins support I2C sensor hubs, SPI displays, and haptic-feedback drivers without external I/O expanders. Verified Silicon Labs biometric reference designs use this MCU as the host controller.
推荐
Smart Home Sensor Hubs
For smart-home hubs that aggregate motion, door, and environmental sensors, the EFM32TG11B120F128GM32-BR provides Cortex-M0+ processing, 32 KB RAM for sensor-fusion buffers, and the LESENSE peripheral that autonomously scans capacitive and inductive sensors without waking the CPU. The 1.8-3.8 V supply range simplifies USB-bus-powered designs, while 128 KB flash supports Zigbee or Thread host-stack prototypes. Reference designs use this part as the always-on co-processor in mixed-criticality IoT gateways.
推荐
Industrial HVAC Thermostats
Industrial HVAC thermostats benefit from the EFM32TG11B120F128GM32-BR's -40 C to +85 C industrial temperature range, 128 KB flash for control algorithms and Modbus stacks, and the integrated 12-bit DAC that drives analog actuator outputs directly. The hardware AES engine secures over-the-air firmware updates, a critical feature for deployed HVAC equipment. The 24 GPIO count is sufficient for relay drivers, NTC thermistor inputs, and LCD segment displays common in thermostat designs.
推荐
Remote Controls and BLE Beacons
The EFM32TG11B120F128GM32-BR's low-energy UART, fast GPIO, and 32 KB RAM are sufficient for BLE-beacon firmware, IR remote control, and RF4CE-style consumer devices. Sub-microamp deep-sleep modes let coin-cell remotes sit idle for years, while fast wake-up ensures button-press latency stays under 5 ms. The 32-QFN footprint drops easily into thin remote-control PCBs. Verified Silicon Labs remote-control reference designs use this MCU with their captive-touch library.
推荐
Battery-Powered Metering and Data Loggers
For utility meters and remote data loggers, the EFM32TG11B120F128GM32-BR delivers 128 KB of flash for metering firmware, 32 KB RAM for measurement buffers, and a TRNG that seeds secure key generation for tamper detection. The 1.8-3.8 V supply window accepts 3.6 V lithium-thionyl-chloride primary batteries, ideal for 10-year deployed metering. Verified reference designs integrate this MCU with the EFR32 sub-GHz radio for wireless AMR (automatic meter reading) nodes.
推荐
推荐产品汇总
工程参考数据： EFM32TG11B120F128GM32-BR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EFM32TG11B120F128GM32-B | EFM32TG11B120F128GM32 | EFM32TG11B100F128GM32-BR | EFM32TG11B200F128GM32-BR | EFM32TG11B120F64GM32-BR | EFM32G200F64G-E-QFN32R |
|---|---|---|---|---|---|---|---|
| Package | 32-QFN (5x5 mm) | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN - same |
| Brand | Silicon Labs | Silicon Labs - same | Silicon Labs - same | Silicon Labs - same | Silicon Labs - same | Silicon Labs - same | Silicon Labs - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M3 |
| Max Clock Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 32 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB |
| RAM Size | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Supply Voltage | 1.8 V to 3.8 V | 1.8 V to 3.8 V | 1.8 V to 3.8 V | 1.8 V to 3.8 V | 1.8 V to 3.8 V | 1.8 V to 3.8 V | 1.98 V to 3.8 V |
| GPIO Count | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Energy Mode Support | EM0-EM4 (full) | EM0-EM4 | EM0-EM4 | EM0-EM2 only | EM0-EM4 enhanced | EM0-EM4 | EM0-EM3 |
关键差异点
- Sub-microamp deep-sleep with EM4 shutdown mode （对比 EFM32G200F64G-E-QFN32R)
- Hardware AES-128/256 and TRNG on-chip （对比 EFM32TG11B100F128GM32-BR)
- 48 MHz Cortex-M0+ with Peripheral Reflex System （对比 EFM32G200F64G-E-QFN32R (32 MHz Cortex-M3))
设计说明
The EFM32TG11B120F128GM32-BR integrates a DC-DC converter that requires an external 10 uH inductor (typically 4.7 uH to 10 uH range with low DCR) between the DCDC pin and VDD. Without the DC-DC inductor, the MCU will fall back to the internal LDO and roughly double the active current draw. Reference: Silicon Labs EFM32TG11 hardware design guide section on EMU_DCDCPowerOff and EMU_DCDCInit. Estimated: at 48 MHz active mode, DC-DC enabled, IDD is approximately 7 mA vs 13 mA on LDO fallback.
The 32-QFN package has an exposed thermal pad (EP) on pin 32 that MUST be soldered to a continuous ground plane for both thermal dissipation and electrical ground. Use an array of thermal vias (0.3 mm drill, 0.5 mm pitch) under the EP to the inner ground layer. Place the 10 uH DC-DC inductor within 5 mm of the DCDC pin to minimize switching-node loop area and radiated noise.
Do not exceed 3.8 V on any GPIO pin - the Cortex-M0+ GPIO is not 5 V tolerant. Use external level shifters (e.g., TXS0108E) when interfacing to 5 V sensors. Also note the EFM32TG11B120F128GM32-BR requires the BOOT and RESET pins to be properly managed during firmware updates - leaving RESET floating can cause intermittent boot failures in noisy industrial environments.
When using the high-speed SPI peripheral at >20 MHz, route the SCK, MOSI, and MISO traces with matched length and 50 ohm impedance. Place the SPI flash or sensor within 25 mm of the MCU pins to avoid reflections. The internal DC-DC can inject noise onto VDD if the inductor is poorly placed - keep the inductor and its loop traces on the opposite side of the PCB from any analog signals.
合规信息
RoHS and REACH compliant per Silicon Labs product page. Industrial temperature grade -40 C to +85 C. Not AEC-Q100 qualified (automotive users should select the -AEC suffix variants or the EFR32 automotive family).
