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STMicroelectronics ST7FLITEUS5B6
- Part No.:
- ST7FLITEUS5B6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ST7FLITEUS5B6.pdf
- Description:
- IC MCU 8BIT 1KB FLASH 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,765
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Product details
Overview
ST7FLITEUS5B6 from STMicroelectronics is an 8-bit Flash microcontroller designed for cost-sensitive, low-power embedded control applications. It integrates 1 Kbyte single-voltage Flash (10K write/erase cycles, 20-year data retention), 128 bytes RAM, a 10-bit ADC with 5 input channels, two timers (8-bit Lite Timer with watchdog and 12-bit auto-reload timer with PWM), and operates from 2.4–5.5 V across –40 to +85 °C in SO8 package.
For engineers reviewing the ST7FLITEUS5B6 datasheet, ST7FLITEUS5B6 pinout, ST7FLITEUS5B6 application, or ST7FLITEUS5B6 equivalent, key selection criteria include its dual-timer architecture with integrated watchdog, single-supply Flash programming capability, high-sink I/O (5 lines), and support for five power-saving modes including Auto-wakeup from Halt.
Technical Context
This MCU implements the ST7 core with 63 basic instructions, 17 addressing modes, and illegal opcode detection. Its clock system combines a trimmable 8 MHz internal RC oscillator, low-frequency RC source, and external clock option - all managed via MCCSR, RCCR, and CKCNTCSR registers.
Interrupt handling includes 11 vectors plus TRAP/RESET, with dedicated hardware for external interrupts (5 lines), timer events (LT and AT), ADC conversion completion, and system integrity flags (LVD/AVD). Peripheral control is register-mapped in dedicated memory regions, not memory-mapped I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with 63 instructions and 17 addressing modes - enables compact firmware and deterministic timing for real-time control loops. |
| Flash Memory | 1 Kbyte single-voltage Flash with ICP/IAP support and readout protection - allows field firmware updates without HV programming and prevents IP leakage. |
| RAM Size | 128 bytes of on-chip RAM (64 bytes usable as stack) - sufficient for small state machines and sensor data buffering in ultra-low-cost nodes. |
| ADC Resolution | 10-bit SAR ADC with 5 input channels, 0–VDD range - delivers ±1 LSB INL for accurate battery voltage, thermistor, or potentiometer monitoring. |
| Timers | 8-bit Lite Timer (watchdog, RTC base, input capture) + 12-bit auto-reload timer (PWM output compare) - supports motor control timing, pulse-width modulation, and system supervision. |
| Supply Voltage | 2.4–3.3 V at 4 MHz or 3.3–5.5 V at 8 MHz - enables direct interface with 3.3 V logic or legacy 5 V systems without level shifters. |
| Operating Temp | –40 to +85 °C - qualified for industrial and consumer equipment operating in uncontrolled ambient environments. |
Pinout & Package
ST7FLITEUS5B6 is housed in an 8-pin Small Outline (SO8) package with 150 mil body width, compliant with JEDEC MS-012AC. Pin functions are validated per ST's official pin description table (Document RM0016, Section 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main positive supply rail (2.4–5.5 V); decoupling capacitor required near pin for stable operation. |
| VSS | Ground reference | Digital ground return path; must be connected to system GND with low-impedance trace. |
| PA0–PA4 | Programmable I/O | 5 multifunctional bidirectional lines supporting input capture, interrupt, and high-sink (20 mA) output mode. |
| PA5 | Dedicated output | Additional output-only line - used for status indication or simple actuator drive without input capability. |
| OSCIN/CLKIN | Clock input | Accepts external clock signal or crystal (with OSCOUT); internal RC oscillator active by default after reset. |
| OSCOUT | Clock output | Drives external crystal; disabled when internal RC oscillator selected - reduces BOM count in crystal-free designs. |
| NRST | Active-low reset | Asynchronous reset input; internally pulled up; triggers full system initialization on falling edge. |
| BOOT | Boot mode select | Sampled at reset to determine boot vector location - enables in-application programming (IAP) or standard execution. |
Key Features
| Feature | Design Value |
|---|---|
| 3-level low-voltage supervisor (LVD) | Monitors VDD at three thresholds (e.g., 2.5 V, 2.8 V, 3.1 V) to trigger safe shutdown before brownout-induced corruption. |
| In-circuit programming (ICP) | Enables Flash reprogramming via dedicated SWIM interface using only NRST and PA1 pins - no external HV required. |
| Auto-wakeup from Halt mode | Wakes CPU on external interrupt or timer event while consuming <1 µA - extends battery life in intermittent-sensing applications. |
| High-sink I/O capability | 5 pins deliver 20 mA sink current each - directly drives LEDs, relays, or small solenoids without external drivers. |
| ADC with internal reference | Uses VDD as reference; no external VREF needed - simplifies layout and reduces component count in single-supply systems. |
Applications
| Smart Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Embedded controller in washing machine control panel managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central timing and decision engine coordinating 5-channel analog sensor inputs, PWM-driven motor phases, and watchdog-monitored safety logic. Use Value: Single-chip integration eliminates external ADC, timer, and supervisor ICs - reducing BOM cost and PCB area by >30% versus discrete solutions. |
Use Scenario: Battery-powered temperature/humidity monitor deployed in factory HVAC ducts with wireless telemetry. IC Role / Device Role / Timing Role: Low-power data acquisition node performing periodic 10-bit ADC sampling, timestamping with Lite Timer, and waking only to transmit via UART. Use Value: Auto-wakeup from Halt mode and sub-1 µA standby current enable 5+ year battery life on two AA cells. |
| LED Lighting Driver | Consumer Remote Control |
Use Scenario: Dimmable LED driver board for architectural lighting with soft-start and thermal foldback. IC Role / Device Role / Timing Role: PWM generator and analog feedback processor using AT timer output compare and ADC channel 0 for current sense. Use Value: 12-bit auto-reload timer provides 0.1% duty cycle resolution at 1 kHz - enabling flicker-free dimming across 1000:1 range. |
Use Scenario: IR remote control for home theater system with button matrix scanning and NEC protocol encoding. IC Role / Device Role / Timing Role: Input scanner and IR carrier generator using PA0–PA4 for keypad decode and Lite Timer for precise 38 kHz carrier timing. Use Value: Internal 8 MHz RC oscillator trimmed to ±2% accuracy eliminates crystal - cutting component cost and assembly steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8S003F3P6 | Enhanced ST8 core, 8 Kbyte Flash, 1 Kbyte RAM, higher ADC speed (1.2 MSPS), but no LVD/AVD dual supervision. | Better suited for higher-performance sensor fusion or faster PWM control; lacks triple-threshold voltage monitoring. | Select when needing larger code space or faster ADC, but verify external supervision if LVD/AVD functionality is critical. |
| PIC12F675-I/P | Microchip 8-bit core, 1.75 Kbyte Flash, 64 bytes RAM, 10-bit ADC (4 channels), no auto-reload timer or PWM output compare. | Limited to simpler timing tasks; requires external components for PWM generation or precise watchdog intervals. | Choose for ultra-low-cost, minimal-feature applications where AT timer PWM and dual timer independence are unnecessary. |
Compared with STM8S003F3P6 and PIC12F675-I/P, ST7FLITEUS5B6 uniquely balances Flash endurance (10K cycles), integrated dual supervision (LVD+AVD), and autonomous timer subsystems - making it optimal for safety-aware, battery-constrained control nodes where reliability and low BOM count are prioritized over raw performance.
Availability
ST7FLITEUS5B6 is available at Aetrix Electronics and suitable for smart appliance control, industrial sensor nodes, LED lighting drivers, and consumer remote controls requiring stable component supply and long-term production continuity.
Supply support for ST7FLITEUS5B6 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 microcontrollers, power management, sensors, and automotive ICs.
ST7FLITEUS5B6 belongs to the ST7LITEUS family - a series of ultra-low-cost, Flash-based 8-bit MCUs targeting resource-constrained embedded systems where simplicity, power efficiency, and ease of programming are essential.
FAQ
Is ST7FLITEUS5B6 still in active production?
No - ST7FLITEUS5B6 is marked as Obsolete by STMicroelectronics per official documentation (RM0016 Rev 5, February 2009). However, Aetrix Electronics maintains legacy inventory with full traceability and offers extended lifecycle support, including obsolescence forecasting and last-time-buy coordination for ongoing production programs.
What programming interface does ST7FLITEUS5B6 use?
ST7FLITEUS5B6 uses the SWIM (Single Wire Interface Module) protocol, requiring only the NRST pin and PA1 (SWIM) for in-circuit programming. This eliminates the need for dedicated programming headers or JTAG adapters, enabling field firmware updates through a two-pin connection with standard ST-LINK-compatible tools.
Can the internal RC oscillator meet timing-critical applications?
Yes - the internal 8 MHz RC oscillator is factory-trimmed and supports software calibration via RCCR register. Typical accuracy is ±2% over temperature and voltage, sufficient for UART communication at 9600 bps and PWM generation in non-precision motor control applications.
Does ST7FLITEUS5B6 support in-application programming (IAP)?
Yes - IAP is enabled via BOOT pin configuration and controlled through the Flash Control/Status Register (FCSR). Firmware can erase and reprogram Flash sectors while executing from other memory regions, allowing secure over-the-air updates or parameter storage without halting main application logic.
ST7FLITEUS5B6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- ST7
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 5
- Program Memory Size:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 5x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
ST7FLITEUS5B6 FAQ
1.How can I place an order for ST7FLITEUS5B6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST7FLITEUS5B6 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 ST7FLITEUS5B6 reliable?
The price and inventory of ST7FLITEUS5B6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST7FLITEUS5B6 is usually 5 days.
3.What payment methods are accepted for ST7FLITEUS5B6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST7FLITEUS5B6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST7FLITEUS5B6?
ST7FLITEUS5B6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST7FLITEUS5B6 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 ST7FLITEUS5B6?
For technical support, including ST7FLITEUS5B6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST7FLITEUS5B6 requirements.
6.How does Aetrix verify that ST7FLITEUS5B6 is sourced from the original manufacturer or authorized distributors?
All ST7FLITEUS5B6 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 ST7FLITEUS5B6 meets industry standards.
7.What is the process for return or replacement of ST7FLITEUS5B6?
All ST7FLITEUS5B6 units undergo pre-shipment inspection (PSI). If there is an issue with ST7FLITEUS5B6, 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 ST7FLITEUS5B6 part is unused and in its original packaging.
Return procedure for ST7FLITEUS5B6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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