My Inquiry
My Account
STMicroelectronics STM32L151R8H6A
- Part No.:
- STM32L151R8H6A
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L151R8H6A.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,159
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L151R8H6A from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 32 KB SRAM, 4 KB EEPROM with ECC, 12-bit ADC (1 Msps, 24 channels), and dual 12-bit DACs - deployed in battery-powered IoT sensors, portable medical devices, and smart utility meters requiring sub-µA standby operation.
For engineers reviewing the STM32L151R8H6A datasheet, STM32L151R8H6A pinout, STM32L151R8H6A application, or STM32L151R8H6A equivalent, key selection criteria include verified ultra-low-power mode current (0.28 µA Standby), USB 2.0 full-speed interface with internal 48 MHz PLL, LCD driver exclusion (confirmed for R8-A variant), and LQFP64 package compatibility with 73 5V-tolerant I/Os.
Technical Context
The device implements dynamic voltage scaling across six low-power modes (Run, Sleep, Low-power Run, Low-power Sleep, Stop, Standby), with hardware-accelerated power state transitions and <8 µs wakeup from Stop mode. Its memory subsystem integrates ECC on both Flash and EEPROM, and includes 80-byte backup registers retained in Standby mode.
Clock architecture combines five independent sources: HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), LSI (37 kHz), and MSI (65 kHz–4.2 MHz), all feeding a programmable PLL supporting CPU and USB clock domains - enabling precise timing control for mixed-signal applications without external oscillators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3 @ up to 32 MHz; 1.25 DMIPS/MHz enables real-time sensor fusion in resource-constrained edge nodes. |
| Memory | 128 KB Flash with ECC + 32 KB SRAM + 4 KB true EEPROM with ECC - supports robust firmware updates and parameter retention over 100k cycles. |
| Power Modes | 0.28 µA Standby (3 wakeup pins), 0.44 µA Stop (16 wakeup lines), 10.9 µA Low-power Run - extends coin-cell battery life to >10 years in periodic sensing. |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2×12-bit DACs with buffers, 2×ultra-low-power comparators - enables closed-loop analog control without external signal chain ICs. |
| Communication | 1×USB 2.0 FS (48 MHz PLL), 3×USART (IrDA/ISO7816), 2×SPI (16 Mbit/s), 2×I²C (SMBus/PMBus) - supports secure wired connectivity and legacy protocol bridging. |
| I/O & Timers | 73 I/Os (5V tolerant), 10 timers including 6×16-bit GP timers (4 PWM/OC/IC each), 2×watchdogs - sufficient for multi-sensor actuation and safety-critical timing. |
| Package | LQFP64 (10 × 10 mm, 0.5 mm pitch) - compatible with standard PCB assembly processes and thermal management in compact industrial enclosures. |
Pinout & Package
LQFP64 package with 64 leads, 10 × 10 mm body, 0.5 mm pitch, and exposed thermal pad (not electrically connected). Pin numbering follows standard counter-clockwise sequence from top-left corner marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O power supply | 1.65–3.6 V input; powers CPU, memories, and all digital peripherals - requires local 100 nF + 4.7 µF decoupling per supply domain. |
| VSS | Digital ground reference | Common return path for all digital logic; must be low-impedance and separated from analog ground at single-point connection. |
| PA0–PA15 | General-purpose I/O bank A | 5V-tolerant inputs; configurable as GPIO, EXTI, ADC1_IN0–IN15, TIM2/3/9 CH1–CH4 - enables flexible sensor interface mapping. |
| PB0–PB15 | General-purpose I/O bank B | 5V-tolerant inputs; supports USART1/2/3, SPI1/2, I²C1/2, TIM3/4/10/11 - allows peripheral multiplexing without external glue logic. |
| PC13–PC15 | Low-power oscillator pins | Connect 32.768 kHz crystal for RTC; PC14/PC15 support calibration via RCC_BDCR register - ensures ±20 ppm timekeeping accuracy over -40°C to +105°C. |
| PA11/PA12 | USB D+/D− | Differential full-speed USB 2.0 interface; integrated transceivers eliminate external PHY - reduces BOM count and EMI footprint. |
| NRST | Active-low reset input | Asynchronous reset assertion; internal pull-up; accepts 1.2–VDD logic levels - simplifies reset circuit design with no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout thresholds (1.62–2.52 V) enable precise supply monitoring across battery discharge curves. |
| Capacitive sensing | 20-channel CSD supporting touchkey, linear, and rotary sensors - eliminates need for dedicated touch controller ICs. |
| True EEPROM | 4 KB on-chip data storage with ECC and 100k write/erase endurance - replaces external serial EEPROM in metering and calibration applications. |
| USB with internal PLL | 48 MHz USB clock generated internally from HSE or MSI - removes external crystal requirement for USB functionality. |
| Temperature sensor | Calibrated ±1.5°C accuracy (–40°C to 125°C); output routed to ADC1_IN16 - enables self-monitoring in thermal-critical deployments. |
Applications
| Smart Utility Metering | Portable Medical Sensors |
|---|---|
Use Scenario: Battery-operated gas/water meters logging consumption every 15 minutes with tamper detection and RF upload. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, EEPROM-based tariff storage, RTC-driven wakeups, and UART-to-LoRaWAN bridge. Use Value: 0.28 µA Standby current enables >15-year battery life on CR2477 cell; integrated DAC calibrates analog front-end offsets without trimming resistors. |
Use Scenario: Wearable ECG patch acquiring 250 SPS biopotential signals, performing real-time QRS detection, and transmitting alerts via BLE. IC Role / Device Role / Timing Role: Signal acquisition hub with 12-bit ADC (24-channel scan), DMA-driven buffer transfer, and low-latency interrupt handling for arrhythmia detection. Use Value: 10.9 µA Low-power Run mode sustains continuous sensing while preserving battery; 2×DACs generate precision bias voltages for instrumentation amplifiers. |
| Industrial Wireless Sensor Node | Asset Tracking Beacon |
Use Scenario: Vibration/temperature node in predictive maintenance system, sampling accelerometer and thermistor every 5 seconds, then sleeping. IC Role / Device Role / Timing Role: Edge processing unit executing FFT on sensor data, storing peak values in EEPROM, and waking radio only on anomaly detection. Use Value: Sub-µA Stop mode (0.44 µA) minimizes quiescent drain; 16 wakeup lines allow event-triggered resume from any GPIO or comparator output. |
Use Scenario: GPS-denied indoor asset tracker using RSSI triangulation from BLE beacons, logging location history to onboard memory. IC Role / Device Role / Timing Role: System manager coordinating BLE advertising, flash writes, RTC timestamping, and low-power timer-based beacon scanning intervals. Use Value: 8 µs wakeup time from Stop mode ensures rapid response to BLE events; 80-byte backup registers retain last known position during power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L431RCY6TR | ARM Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no EEPROM, higher active current (81 µA/MHz) | Requires external EEPROM for parameter storage; better suited for floating-point math but less optimal for pure low-power retention. | Select when DSP capability or larger code space outweighs EEPROM dependency and standby current penalty. |
| EFM32PG12B500F1024GL125 | ARM Cortex-M4, 1024 KB Flash, 256 KB RAM, 32 KB EEPROM, 0.17 µA Deep Sleep (but no USB) | Lacks native USB; uses proprietary energy-friendly peripherals instead of STM32-compatible HAL libraries. | Prefer for extreme battery life where USB is unnecessary and ecosystem lock-in is acceptable. |
Compared with STM32L151R8H6A, STM32L431RCY6TR trades EEPROM and ultra-low standby for enhanced compute and memory, while EFM32PG12B500F1024GL125 achieves lower deep-sleep current but sacrifices USB integration and STM32 software compatibility - making the R8H6A optimal for USB-enabled, EEPROM-dependent, long-life embedded designs.
Availability
STM32L151R8H6A is available at Aetrix Electronics and suitable for smart metering, portable diagnostics, industrial wireless sensor networks, and asset tracking applications requiring stable component supply across extended product lifecycles.
Supply support for STM32L151R8H6A 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors since 1987.
The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust memory integrity, and integrated analog peripherals - optimized for metering, healthcare, and environmental monitoring systems.
FAQ
Does STM32L151R8H6A include an LCD controller?
No. The STM32L151R8H6A explicitly excludes the LCD driver - confirmed in Section 2.1 and Table 2 of the datasheet (DocID024330 Rev 5). Only STM32L152x6/8/B-A variants integrate the 8×40 segment LCD controller. This omission reduces die size and power consumption for non-display applications.
What is the maximum operating temperature for STM32L151R8H6A?
The device is rated for –40°C to +105°C ambient operation, validated per Section 6.3.1 (General Operating Conditions) and Table 14 of the datasheet. This extended range supports deployment in industrial enclosures, outdoor metering housings, and automotive cabin environments without derating.
Is the internal 16 MHz RC oscillator factory-trimmed?
Yes. The HSI oscillator is factory-trimmed to ±1% accuracy across voltage and temperature, as specified in Section 6.3.7 (Internal clock source characteristics) and Table 31. This eliminates need for external crystal in cost-sensitive applications where USB is not used or sourced from alternate clock.
How many I/O pins are 5V tolerant on STM32L151R8H6A?
73 I/O pins are 5V tolerant, as stated in the "Features" section (page 1) and Section 3.6 (GPIOs). This applies to all GPIOs except those dedicated to USB (PA11/PA12), oscillator inputs (PC14/PC15), and BOOT0 - enabling direct interfacing with legacy 5V logic without level shifters.
STM32L151R8H6A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- Series:
- STM32L1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 20x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151R8H6A FAQ
1.How can I place an order for STM32L151R8H6A through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151R8H6A 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 STM32L151R8H6A reliable?
The price and inventory of STM32L151R8H6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151R8H6A is usually 5 days.
3.What payment methods are accepted for STM32L151R8H6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151R8H6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151R8H6A?
STM32L151R8H6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151R8H6A 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 STM32L151R8H6A?
For technical support, including STM32L151R8H6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151R8H6A requirements.
6.How does Aetrix verify that STM32L151R8H6A is sourced from the original manufacturer or authorized distributors?
All STM32L151R8H6A 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 STM32L151R8H6A meets industry standards.
7.What is the process for return or replacement of STM32L151R8H6A?
All STM32L151R8H6A units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151R8H6A, 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 STM32L151R8H6A part is unused and in its original packaging.
Return procedure for STM32L151R8H6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L151R8H6A Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
