Overview
The STM8S903F3M6 is an 8-bit microcontroller from STMicroelectronics, part of the STM8S access line. This microcontroller is designed to offer a balance of performance, robustness, and reduced system cost. It features an advanced 16 MHz STM8 core with Harvard architecture and a 3-stage pipeline, along with an extended instruction set. The device includes 8 Kbyte of Flash program memory, 1 Kbyte of RAM, and 640 bytes of true data EEPROM, which supports up to 300,000 write/erase cycles. The STM8S903F3M6 is suitable for a variety of applications requiring low power consumption, robust I/Os, and advanced peripherals.
Key Specifications
| Parameter | Specification |
|---|---|
| Core Frequency | 16 MHz |
| Program Memory | 8 Kbyte Flash; data retention 20 years at 55 °C after 10 kcycle |
| Data Memory | 640 byte true data EEPROM; endurance 300 kcycle |
| RAM | 1 Kbyte |
| Operating Voltage | 2.95 to 5.5 V |
| Clock Sources | Flexible clock control, 4 master clock sources (low-power crystal resonator oscillator, external clock input, internal user-trimmable 16 MHz RC, internal low-power 128 kHz RC) |
| Power Management | Low-power modes (wait, active-halt, halt), switch-off peripheral clocks individually, permanently active low-consumption power-on and power-down reset |
| Interrupts | Nested interrupt controller with 32 interrupts, up to 28 external interrupts on 7 vectors |
| Timers | Advanced control timer (16-bit, 4 CAPCOM channels), 16-bit general purpose timer, 8-bit basic timer, auto wake-up timer, window and independent watchdog timers |
| Communication Interfaces | UART with clock output, SPI up to 8 Mbit/s, I2C up to 400 kbit/s |
| ADC | 10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel, scan mode and analog watchdog |
| I/Os | Up to 28 I/Os on a 32-pin package including 21 high sink outputs, highly robust I/O design |
| Unique ID | 96-bit unique key for each device |
| Package | SO-20, TSSOP-20, UFQFPN20 3X3X0.6 P0.5 NO EXP PAD |
| Operating Temperature | -40 °C to 125 °C |
Key Features
- Advanced Core: 16 MHz STM8 core with Harvard architecture and 3-stage pipeline, extended instruction set.
- Memories: 8 Kbyte Flash program memory, 1 Kbyte RAM, 640 bytes true data EEPROM with 300 kcycle endurance.
- Clock and Power Management: Flexible clock control with 4 master clock sources, low-power modes, and clock security system.
- Interrupt Management: Nested interrupt controller with 32 interrupts, up to 28 external interrupts on 7 vectors.
- Timers: Advanced control timer, 16-bit general purpose timer, 8-bit basic timer, auto wake-up timer, and watchdog timers.
- Communication Interfaces: UART with clock output, SPI up to 8 Mbit/s, I2C up to 400 kbit/s.
- ADC: 10-bit ADC with up to 7 multiplexed channels + 1 internal channel, scan mode, and analog watchdog.
- I/Os: Up to 28 I/Os on a 32-pin package including 21 high sink outputs, highly robust I/O design.
- Unique ID: 96-bit unique key for each device.
Applications
- Industrial Automation: Suitable for control systems, sensors, and actuators due to its robust I/Os and advanced peripherals.
- Consumer Electronics: Used in various consumer devices requiring low power consumption and reliable performance.
- Automotive Systems: Applicable in automotive control units, sensors, and other automotive electronics.
- Medical Devices: Can be used in medical devices that require precise control and low power consumption.
- IoT Devices: Ideal for Internet of Things (IoT) applications needing efficient power management and robust communication interfaces.
Q & A
- What is the core frequency of the STM8S903F3M6 microcontroller?
The core frequency of the STM8S903F3M6 is 16 MHz.
- How much program memory does the STM8S903F3M6 have?
The STM8S903F3M6 has 8 Kbyte of Flash program memory.
- What is the endurance of the EEPROM in the STM8S903F3M6?
The EEPROM in the STM8S903F3M6 has an endurance of 300,000 write/erase cycles.
- What are the operating voltage ranges for the STM8S903F3M6?
The operating voltage ranges for the STM8S903F3M6 are from 2.95 V to 5.5 V.
- What types of timers are available on the STM8S903F3M6?
The STM8S903F3M6 includes an advanced control timer, a 16-bit general purpose timer, an 8-bit basic timer, an auto wake-up timer, and watchdog timers.
- What communication interfaces does the STM8S903F3M6 support?
The STM8S903F3M6 supports UART with clock output, SPI up to 8 Mbit/s, and I2C up to 400 kbit/s.
- What is the resolution of the ADC on the STM8S903F3M6?
The ADC on the STM8S903F3M6 is a 10-bit ADC with ±1 LSB accuracy.
- How many I/Os are available on the STM8S903F3M6?
The STM8S903F3M6 has up to 28 I/Os on a 32-pin package, including 21 high sink outputs.
- Does the STM8S903F3M6 have a unique identifier?
Yes, the STM8S903F3M6 has a 96-bit unique key for each device.
- What are the typical applications of the STM8S903F3M6?
The STM8S903F3M6 is typically used in industrial automation, consumer electronics, automotive systems, medical devices, and IoT devices.
