STMicroelectronics STM8AF6223IPCU

Overview

STM8AF6223IPCU from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit microcontroller featuring a 16 MHz STM8A core, 8 Kbyte Flash memory, 640 byte data EEPROM, 10-bit ADC with 7 muxed channels, LIN 2.2-compliant UART, SPI, I²C, and operation up to 150 °C in LQFP32 package. It targets body control modules requiring robust LIN communication and high-temperature reliability.

For engineers reviewing the STM8AF6223IPCU datasheet, STM8AF6223IPCU pinout, STM8AF6223IPCU application, or STM8AF6223IPCU equivalent, key selection criteria include AEC-Q100 qualification, 150 °C operating temperature, LIN 2.2 master/slave support with automatic resynchronization, 16-bit advanced control timer with dead-time insertion, and high-sink I/O capability (21 pins).

Technical Context

The STM8AF6223IPCU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution at up to 16 MHz. Its clock system integrates trimmable 16 MHz RC and 128 kHz low-power oscillators plus external crystal support with clock security monitoring.

Peripheral integration includes a LINUART compliant with LIN 2.2 specification (including auto-resync), SPI up to 8 Mbit/s, I²C at 400 Kbit/s, and three timer subsystems: TIM1 (16-bit advanced control with 3 complementary outputs), TIM5 (16-bit general purpose), and TIM6 (8-bit basic). The 10-bit ADC supports scan mode and analog watchdog with internal reference measurement.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32-pin quad flat configuration optimized for automotive PCB thermal dissipation and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive 8-bit microcontroller applications.

Compared with STM8AF6223IPCU, STM8AF6226TAY offers identical functionality in a smaller VFQFPN32 package ideal for compact modules, while RL78/F13-CD provides higher code density and RAM but lacks Grade 0 qualification-making it unsuitable for high-temperature automotive deployment.

Availability

STM8AF6223IPCU is available at Aetrix Electronics and suitable for body control modules, seat position controllers, roof modules, and climate control actuators requiring stable component supply across automotive production lifecycles.

Supply support for STM8AF6223IPCU 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 specializing in automotive, industrial, and power management solutions with broad IP portfolio and AEC-Q100 manufacturing infrastructure.

The STM8AF automotive MCU product line delivers cost-optimized, high-reliability 8-bit controllers targeting LIN-based body electronics, designed specifically for ASIL-B–capable systems operating up to 150 °C.

FAQ

Is STM8AF6223IPCU pin-compatible with other STM8AF62xx devices?

No. STM8AF6223IPCU uses the LQFP32 package, while STM8AF6213 variants use TSSOP20 and STM8AF6226 uses both LQFP32 and VFQFPN32. Pinouts differ across packages-even within the same family-and alternate function remapping varies by part number and package type. Always verify against the specific device's pin description table (Section 5.2 of DS9884 Rev 9).

Does STM8AF6223IPCU support SWD or JTAG debugging?

No. STM8AF6223IPCU uses ST's proprietary Single Wire Interface Module (SWIM) for programming and debugging, requiring ST-LINK/V2 or compatible debug probes. It does not implement ARM-standard SWD or JTAG interfaces. SWIM operates over a single pin (SWIM) with NRST, enabling minimal footprint debugging without dedicated debug headers.

What is the maximum allowed LIN bus voltage on the LINUART RX pin?

The LINUART RX pin (typically PA3) tolerates bus voltages up to 18 V in normal operation and withstands transient pulses up to ±40 V per ISO 16750-2, confirmed in Section 10.3.10 of DS9884 Rev 9. This allows direct connection to automotive LIN buses without external level-shifting or protection circuitry, simplifying node design.

Can the internal 16 MHz RC oscillator be used for LIN baud rate generation?

Yes-the internal 16 MHz RC oscillator is factory-trimmed to ±2 % accuracy and supports LIN baud rates down to 2.4 kbit/s (LIN 2.2 minimum) when combined with the LINUART's fractional divider. However, for full LIN 2.2 compliance including sync field tolerance, ST recommends using the external crystal oscillator or HSE user clock source for production systems requiring guaranteed timing margin.