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STMicroelectronics STM8L001J3M3TR
- Part No.:
- STM8L001J3M3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
STM8L001J3M3TR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,131
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Product details
Overview
STM8L001J3M3TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 8 Kbytes Flash (with up to 2 Kbytes data EEPROM), 1.5 Kbytes SRAM, STM8 CISC core delivering up to 16 MIPS at 16 MHz, and operating across 1.8–3.6 V supply and –40 to +125 °C. It integrates UART, SPI, I²C, two 16-bit timers, one 8-bit timer, IR interface, two comparators, beeper, AWU, and IWDG - deployed in battery-powered sensor nodes and smart metering endpoints.
For engineers reviewing the STM8L001J3M3TR datasheet, STM8L001J3M3TR pinout, STM8L001J3M3TR application, or STM8L001J3M3TR equivalent, key selection criteria include sub-1 µA Halt-mode current (0.3 µA), 6 GPIOs with LED driver capability on PA0, SWIM debug interface, and SO8N package compatibility for space-constrained PCB layouts.
Technical Context
The STM8L001J3M3TR implements a CISC-based STM8 core with 21 registers, 20 addressing modes, and 80 instructions - optimized for code density and low-power execution. Its clock system combines a 16 MHz internal RC oscillator (4 µs wakeup) and a 38 kHz low-consumption RC for AWU/IWDG, enabling deterministic low-latency wakeups from Halt mode.
Peripheral integration follows ST's modular architecture: SPI supports master/slave modes with configurable phase/polarity; I²C operates up to 400 kHz multimaster; USART includes fractional baud rate generator; and two comparators each accept one dedicated analog input with programmable hysteresis per datasheet Table 30.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | STM8 8-bit CISC CPU, up to 16 MIPS @ 16 MHz - enables real-time control in resource-constrained firmware without external co-processors. |
| Flash / EEPROM | 8 Kbytes Flash with ECC + up to 2 Kbytes data EEPROM - supports field firmware updates and nonvolatile parameter storage with error resilience. |
| RAM | 1.5 Kbytes static RAM - sufficient for stack, heap, and peripheral buffers in sensor polling or UART echo applications. |
| Low-power modes | Halt: 0.3 µA, Active-halt: 0.8 µA, Run: 150 µA/MHz - extends coin-cell battery life to multi-year operation in wake-on-event designs. |
| I/O count | 6 GPIOs, all mappable to external interrupts, with high sink/source drive and PA0 supporting infrared LED drive - eliminates need for external driver transistors in IR remote modules. |
| Communication | UART (fractional baud), SPI (master/slave), I²C (400 kHz multimaster) - enables direct connection to sensors, displays, and host MCUs without protocol translation. |
| Timers | Two 16-bit timers (TIM2/TIM3) + one 8-bit timer (TIM4) - supports PWM generation, input capture, and precise timing for beeper (1/2/4 kHz) or IR carrier modulation. |
Pinout & Package
STM8L001J3M3TR is housed in an SO8N (8-lead plastic small outline, 4.9 × 6 mm, 150 mil body width) package compliant with JEDEC MS-012AC. The package supports standard reflow profiles and offers 1.27 mm pitch for reliable automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SWIM) | Single-wire interface module | Dedicated debug programming pin; must be held high during reset to enter SWIM mode; not multiplexed with GPIO. |
| 2 (VSS) | Ground reference | Primary digital ground return path; requires low-impedance PCB connection to minimize noise coupling into analog peripherals. |
| 3 (PA0) | GPIO / IR output / LED driver | High-sink capable port (up to 20 mA) configured as infrared carrier output or direct LED drive - no external transistor needed. |
| 4 (PA1) | GPIO / USART TX | Configurable as push-pull TX output or general-purpose I/O with programmable pull-up; supports 3.3 V logic levels. |
| 5 (PA2) | GPIO / USART RX | Input-capable pin with Schmitt trigger; accepts TTL/CMOS levels; used for asynchronous serial receive with noise immunity. |
| 6 (PA3) | GPIO / SPI MISO | Master-in-slave-out data line in SPI slave mode; also functions as interrupt-capable input for wake-on-event sensing. |
| 7 (VDD) | Power supply | Single 1.8–3.6 V supply rail; internal LDO regulates core voltage - decoupling capacitor (100 nF) required near pin. |
| 8 (PA4) | GPIO / SPI SCK / I²C SCL | Configurable clock line for synchronous interfaces or general-purpose I/O; supports open-drain mode for I²C bus compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power Halt mode | 0.3 µA typical current draw - enables decade-scale battery life in always-on environmental monitors using periodic AWU wakeups. |
| Integrated SWIM debug | Single-pin non-intrusive in-circuit debugging and flash programming - eliminates need for JTAG header or external debugger hardware. |
| Infrared (IR) interface | Dedicated IR_TIM peripheral driving PA0 with carrier frequency modulation - simplifies NEC/RC5 remote control transmitter implementation. |
| Data EEPROM | Up to 2 Kbytes embedded EEPROM with wear leveling support - stores calibration coefficients or device-specific settings without external memory. |
| Comparator inputs | Two independent comparators (COMP1_CH3, COMP2_CH2) with dedicated pins - enables zero-crossing detection or threshold-triggered wakeups without ADC overhead. |
Applications
| Smart Utility Meter Sensor Node | IR Remote Control Transmitter |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor reporting via UART to concentrator MCU every 5 minutes. IC Role / Device Role / Timing Role: Primary controller executing sensor polling, data formatting, and low-power UART transmission; AWU triggers periodic wakeups. Use Value: 0.3 µA Halt current and fast 4 µs wakeup from 16 MHz RC enable >10-year CR2032 battery life with minimal sleep/wake overhead. |
Use Scenario: Compact IR remote for HVAC control with NEC protocol encoding and 38 kHz carrier. IC Role / Device Role / Timing Role: IR signal generator using IR_TIM peripheral and PA0 high-sink LED driver; handles button scan and protocol timing. Use Value: Integrated IR_TIM and 20 mA PA0 sink eliminate external oscillator and driver transistor - reduces BOM to 3 passive components. |
| Industrial Pushbutton Interface | Low-Cost Beep Alert Module |
|
Use Scenario: DIN-rail mounted panel with 4 tactile buttons and status LEDs, powered by 3.3 V supply. IC Role / Device Role / Timing Role: Input scanner with debounce logic and LED driver; uses GPIO interrupts and PA0 for infrared feedback signaling. Use Value: 6 GPIOs with programmable pull-ups and interrupt mapping allow full button/LED control in SO8N footprint - no external logic IC required. |
Use Scenario: Audible alert circuit for smoke detector, triggered by external comparator output. IC Role / Device Role / Timing Role: Beeper timer generating precise 2 kHz tone; comparator (COMP1) detects smoke sensor voltage threshold. Use Value: On-chip beeper timer and comparator reduce component count versus discrete 555 + op-amp solution - improves reliability and board area efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8L051F3P6TR | 8 Kbytes Flash, 1 Kbyte RAM, 20 GPIOs in TSSOP20; lacks IR_TIM and beeper; adds ADC and DAC. | Requires larger footprint and external IR driver; better suited for analog-sensing over IR transmission. | Select when analog acquisition (ADC/DAC) is primary; avoid when IR carrier generation or minimal size is critical. |
| EFM8LB12F32ES1-B-QFP32 | Silicon Labs 8051 core, 32 Kbytes Flash, 2.25 Kbytes RAM, 25 GPIOs; 0.5 µA deep sleep; no integrated IR peripheral. | Higher memory and I/O count but needs external 38 kHz oscillator and MOSFET for IR drive - increases BOM cost and layout complexity. | Choose for mixed-signal applications needing more peripherals; not optimal for IR-only or space-constrained designs. |
Compared with STM8L001J3M3TR, STM8L051F3P6TR trades IR functionality for analog capability and pin count, while EFM8LB12F32ES1-B-QFP32 delivers deeper sleep but requires external components to replicate IR transmission - making STM8L001J3M3TR uniquely optimized for compact, battery-powered IR endpoint control.
Availability
STM8L001J3M3TR is available at Aetrix Electronics and suitable for smart metering endpoints, IR remote transmitters, industrial pushbutton interfaces, and low-power beep alert modules requiring stable component supply across extended product lifecycles.
Supply support for STM8L001J3M3TR 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, sensors, and automotive semiconductors since 1987.
The STM8L series targets ultra-low-power embedded applications - emphasizing sub-µA sleep currents, integrated oscillators, and compact packages for battery-operated and energy-harvesting systems.
FAQ
Does STM8L001J3M3TR support in-application programming (IAP) of Flash and EEPROM?
Yes. The device supports both in-application programming (IAP) and in-circuit programming (ICP) of Flash and data EEPROM via the SWIM interface. Firmware can reprogram non-active Flash sectors or update EEPROM contents during runtime without halting execution - subject to write protection settings and ECC verification per RM0013.
What is the maximum sink current capability of PA0, and is it safe for direct IR LED drive?
PA0 provides up to 20 mA sink current at VDD = 3.0 V (typical), verified in datasheet Table 27. It is rated for continuous IR LED drive at 38 kHz with appropriate current-limiting resistor - no external transistor required. Thermal derating applies above 85 °C ambient per SO8N thermal resistance (RθJA = 140 °C/W).
Can the STM8L001J3M3TR operate reliably at 1.8 V supply with all peripherals active?
Yes. All specified peripherals - including UART, SPI, I²C, timers, and comparators - function across the full 1.8–3.6 V range per datasheet Section 8.3.1. At 1.8 V, CPU frequency is limited to 12 MHz max (not 16 MHz), and I/O drive strength decreases proportionally - verified in Tables 24–27.
Is there a hardware reset pin, and how is device reset managed without NRST?
No hardware NRST pin exists on STM8L001J3M3TR. Reset is managed exclusively via Power-On Reset (POR)/Power-Down Reset (PDR) circuitry and the SWIM pin: holding SWIM low for >10 µs after power stabilization forces system reset. This is documented in Section 3.3 and Figure 28 of DS12153 Rev 4.
STM8L001J3M3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- STM8L EnergyLite
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- DMA, IR, POR, PWM, WDT
- Number of I/O:
- 6
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L001J3M3TR FAQ
1.How can I place an order for STM8L001J3M3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L001J3M3TR 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 STM8L001J3M3TR reliable?
The price and inventory of STM8L001J3M3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L001J3M3TR is usually 5 days.
3.What payment methods are accepted for STM8L001J3M3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L001J3M3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L001J3M3TR?
STM8L001J3M3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L001J3M3TR 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 STM8L001J3M3TR?
For technical support, including STM8L001J3M3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L001J3M3TR requirements.
6.How does Aetrix verify that STM8L001J3M3TR is sourced from the original manufacturer or authorized distributors?
All STM8L001J3M3TR 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 STM8L001J3M3TR meets industry standards.
7.What is the process for return or replacement of STM8L001J3M3TR?
All STM8L001J3M3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L001J3M3TR, 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 STM8L001J3M3TR part is unused and in its original packaging.
Return procedure for STM8L001J3M3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8L001J3M3TR Tags
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