My Inquiry
My Account
STMicroelectronics STM8AL3136TCY
- Part No.:
- STM8AL3136TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM8AL3136TCY.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,604
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM8AL3136TCY from STMicroelectronics is an AEC-Q100 qualified automotive-grade 8-bit ultra-low-power MCU featuring 32 Kbyte Flash, 2 Kbyte RAM, 1 Kbyte data EEPROM, 12-bit ADC (25 channels, up to 1 Mbps), 12-bit DAC with output buffer, two ultra-low-power comparators, RTC with BCD calendar and auto-wakeup, and integrated SPI/I²C/USART interfaces. It operates from 1.8 V to 3.6 V across –40 °C to 125 °C and targets battery-powered automotive body electronics such as smart sensors and dashboard sub-systems.
For engineers reviewing the STM8AL3136TCY datasheet, STM8AL3136TCY pinout, STM8AL3136TCY application, or STM8AL3136TCY equivalent, key selection criteria include its 400 nA halt mode current, 4.7 µs wakeup time, 1.3 μA active-halt with RTC, 41 mappable I/Os, and LQFP32 package compatibility for space-constrained automotive modules.
Technical Context
The STM8AL3136TCY implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates dual crystal oscillators (1–16 MHz HSE and 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC, all managed by a clock security system to prevent run-time failure.
Power management includes five distinct low-power modes: Wait, low-power run (5.1 μA), low-power wait (3 μA), active-halt with full RTC (1.3 μA), and halt with PDR (400 nA). The device supports fast wakeup (4.7 µs) and ultra-low I/O leakage (50 nA per pin), enabling long-term operation in always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard, 3-stage pipeline, 16 MIPS peak @ 16 MHz - enables deterministic real-time control in resource-constrained automotive nodes. |
| Operating Voltage | 1.8 V to 3.6 V (down to 1.65 V in power-down) - supports direct connection to 2-cell Li-ion or regulated 3.3 V automotive rails without external LDO overhead. |
| Halt Mode Current | 400 nA with PDR enabled - allows multi-year battery life in parking-mode sensors or telematics wake-on-event applications. |
| ADC Performance | 12-bit, 25-channel, up to 1 MSPS with internal temp sensor and reference - delivers high-resolution analog monitoring for cabin climate or battery health sensing. |
| RTC Accuracy | 0.95 ppm resolution with auto-wakeup from Halt - provides precise timekeeping for periodic diagnostics or scheduled CAN bus wakeups without external timing components. |
| I/O Count & Mapping | Up to 41 I/Os, all mappable to interrupt vectors - simplifies PCB routing and firmware flexibility in multi-sensor integration scenarios. |
| Package | LQFP32, 7 × 7 mm, 0.8 mm pitch - industry-standard footprint compatible with automated SMT assembly and thermal performance suitable for under-dash environments. |
Pinout & Package
LQFP32 package: 32-pin, 7 × 7 mm low-profile quad flat package with exposed pad (mechanical drawing per DS7106 Rev 9, Table 66).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support separate analog/digital supply filtering; VDDA pin enables clean ADC/DAC reference path. |
| NRST | Active-low reset input | Configurable reset threshold via BOR; supports both external push-button and watchdog-initiated recovery. |
| SWIM | Single-wire interface for debug/programming | Enables non-intrusive in-circuit debugging and field firmware updates without dedicated JTAG header. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | All pins support interrupt mapping, alternate functions (SPI/I²C/USART), and high-sink LED drive on PA0 - reduces external driver count. |
| OSC_IN / OSC_OUT | HSE crystal oscillator terminals | Supports 1–16 MHz external crystal for precise timing; internal trimming eliminates need for external load capacitors in many configurations. |
| LSE_IN / LSE_OUT | LSE crystal oscillator terminals | 32 kHz crystal connection for RTC; enables calendar functionality and ultra-low-power wake-from-Halt timing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C ambient, ensuring reliability in engine bay and cabin control units. |
| Ultra-low-power RTC with BCD calendar | Retains accurate timekeeping and alarm interrupts during 400 nA Halt mode - eliminates need for external RTC IC in cost-sensitive modules. |
| Two rail-to-rail ultra-low-power comparators | One comparator has fixed threshold; both support wakeup from Halt - enables battery voltage monitoring or windowed sensor threshold detection without CPU wake. |
| Integrated 12-bit DAC with output buffer | Drives analog actuators (e.g., valve positioners or backlight dimmers) directly from PB4–PB6 pins - removes external DAC and op-amp stages. |
| Memory with 20-year data retention | 32 Kbyte Flash (20 yr @ 55 °C), 1 Kbyte EEPROM (300 kcycle endurance) - supports long-life calibration storage and firmware update rollback in safety-critical systems. |
Applications
| Automotive Door Module | Smart Rearview Mirror Control |
|---|---|
Use Scenario: Monitoring window position, lock status, and ambient light for automatic dimming and anti-pinch logic. IC Role / Device Role / Timing Role: Central MCU managing GPIO, ADC (light sensor), DAC (mirror heater control), and LIN 2.0 communication to body controller. Use Value: 41 mappable I/Os consolidate discrete logic; 1.3 μA active-halt with RTC enables periodic self-test without draining vehicle battery. |
Use Scenario: Real-time adjustment of mirror reflectivity based on glare detection and vehicle speed. IC Role / Device Role / Timing Role: Sensor fusion node processing photodiode ADC inputs, driving electrochromic DAC output, and communicating via I²C to display MCU. Use Value: 12-bit ADC accuracy (±1 LSB INL) ensures precise glare quantification; ultra-low 50 nA I/O leakage prevents false triggers in high-impedance sensor paths. |
| Engine Bay Temperature Monitor | Seat Occupancy Detection Interface |
Use Scenario: Continuous temperature logging near exhaust manifold using embedded temp sensor and external thermistor. IC Role / Device Role / Timing Role: Standalone sensor node with RTC timestamping, low-power wait mode between 10 s readings, and USART-based diagnostic upload. Use Value: 3 μA low-power wait mode extends battery life; internal 1.22 V reference enables ratiometric thermistor measurement without external precision voltage source. |
Use Scenario: Interfacing capacitive seat sensors to detect occupant presence/weight for airbag deployment logic. IC Role / Device Role / Timing Role: Signal conditioner acquiring raw capacitance via ADC, applying digital filtering, and transmitting status over LIN 1.3. Use Value: Two comparators with wakeup capability detect rapid capacitance shifts (e.g., child seat placement); 96-bit unique ID enables per-seat calibration traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AL3166TCY | 32 Kbyte Flash, same core/peripherals, but adds LCD controller (4×28 segments) and step-up converter | Required only when driving segmented automotive displays; adds ~0.5 mm height and extra LCD bias pins | Select if display interface is needed; otherwise STM8AL3136TCY offers lower BOM cost and identical low-power performance. |
| RL78/F13-GB | Renesas RL78 core, 24 MHz max, 32 Kbyte Flash, 2.7–5.5 V operation, no AEC-Q100 Grade 1 rating | Targeted at industrial or consumer-grade automotive accessories; lacks 125 °C qualification and 400 nA Halt mode | Choose only for non-safety-critical cabin accessories where extended temperature range and lowest power are not required. |
Compared with STM8AL3136TCY, STM8AL3166TCY adds display capability at identical power and package, while RL78/F13-GB trades AEC-Q100 Grade 1 and ultra-low-power modes for higher clock speed and broader voltage range - making STM8AL3136TCY optimal for certified, battery-sensitive automotive nodes.
Availability
STM8AL3136TCY is available at Aetrix Electronics and suitable for automotive body electronics, battery-powered sensor modules, and dashboard sub-systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM8AL3136TCY 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, specializing in automotive, industrial, and power management solutions with vertical manufacturing and AEC-Q100 validation expertise.
The STM8AL3x series is designed specifically for ultra-low-power automotive applications demanding extended temperature operation, robust EMC immunity, and long-term data retention - targeting body control, sensor fusion, and always-on subsystems.
FAQ
What is the maximum operating temperature for STM8AL3136TCY?
The STM8AL3136TCY is rated for operation from –40 °C to +125 °C ambient, meeting AEC-Q100 Grade 1 requirements. This specification is validated per DS7106 Rev 9 Section 9.3.1, with thermal derating applied above 85 °C for sustained operation in engine compartment proximity.
Does STM8AL3136TCY support in-circuit programming after soldering?
Yes, STM8AL3136TCY supports single-wire in-circuit programming and debugging via the SWIM interface using standard ST-LINK/V2 or compatible tools. No bootloader is required - flash memory can be reprogrammed directly through SWIM with minimal pin count (SWIM, VDD, VSS, NRST).
How does the RTC maintain accuracy during ultra-low-power Halt mode?
The RTC remains fully functional in active-halt mode (1.3 μA) when clocked by the 32 kHz LSE crystal oscillator. Its 0.95 ppm resolution is achieved via hardware-calibrated prescaler division and BCD calendar logic, enabling precise wake-up intervals and timestamping without CPU intervention.
Can the 12-bit DAC drive external loads directly?
Yes, the integrated 12-bit DAC includes an output buffer capable of sourcing/sinking ±5 mA, allowing direct connection to resistive loads (e.g., heater elements) or op-amp inputs. Output pins PB4–PB6 are dedicated DAC channels; output impedance is <1 Ω, supporting stable operation up to 100 kHz bandwidth.
STM8AL3136TCY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8A
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 22x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3136TCY FAQ
1.How can I place an order for STM8AL3136TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3136TCY 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 STM8AL3136TCY reliable?
The price and inventory of STM8AL3136TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3136TCY is usually 5 days.
3.What payment methods are accepted for STM8AL3136TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3136TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3136TCY?
STM8AL3136TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3136TCY 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 STM8AL3136TCY?
For technical support, including STM8AL3136TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3136TCY requirements.
6.How does Aetrix verify that STM8AL3136TCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3136TCY 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 STM8AL3136TCY meets industry standards.
7.What is the process for return or replacement of STM8AL3136TCY?
All STM8AL3136TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3136TCY, 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 STM8AL3136TCY part is unused and in its original packaging.
Return procedure for STM8AL3136TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8AL3136TCY 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
