STMicroelectronics STM8AF6288TDX

Overview

STM8AF6288TDX from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit MCU featuring a 24 MHz STM8A core, 128 Kbyte Flash program memory with 20-year data retention at 55 °C, 2 Kbyte true data EEPROM (300 kcycle endurance), and integrated CAN 2.0B interface operating up to 1 Mbit/s - deployed in engine control units for real-time sensor signal acquisition and actuator command execution.

For engineers reviewing the STM8AF6288TDX datasheet, STM8AF6288TDX pinout, STM8AF6288TDX application, or STM8AF6288TDX equivalent, key selection criteria include automotive-grade temperature range (–40 °C to 150 °C), CAN/LIN/USART/I²C/SPI communication coexistence, 10-bit ADC with 16-channel multiplexing and 2 LSB total unadjusted error, and low-power Halt/Wait modes with clock gating control.

Technical Context

The STM8AF6288TDX implements a Harvard-architecture STM8A CPU with 3-stage pipeline and average 1.6 cycles/instruction throughput, delivering 10 MIPS at 16 MHz. Its clock system integrates user-trimmable 16 MHz HSI and 128 kHz LSI oscillators, plus external crystal support up to 24 MHz with clock security monitoring.

Interrupt handling uses a nested controller with 32 vectors and supports up to 37 external interrupts across 5 vectors. The peripheral set includes two 16-bit general-purpose timers (each with up to 3 CAPCOM channels), one advanced control timer (16-bit, 4 CAPCOM, 3 complementary outputs, dead-time insertion), and an 8-bit auto-wakeup timer.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, automotive-qualified lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8AF6269TDX, the STM8AF6288TDX provides double Flash and EEPROM capacity for enhanced diagnostics and adaptive learning - while STM32F042F6P6 trades automotive temperature rating and integrated CAN for 32-bit performance and broader toolchain support.

Availability

STM8AF6288TDX is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.

Supply support for STM8AF6288TDX 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 devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STM8A automotive MCU product line targets cost-optimized, high-reliability embedded control in harsh environments - emphasizing AEC-Q100 qualification, extended temperature operation, and integrated communication peripherals for vehicle network integration.

FAQ

What is the maximum operating junction temperature for STM8AF6288TDX?

The device is qualified per AEC-Q100 Grade 0 with a maximum ambient operating temperature of +150 °C. When mounted on a standard 4-layer PCB with 2 oz copper and thermal vias to internal ground planes, the junction temperature remains within safe limits up to this ambient rating - confirmed by ST's thermal characterization data in DocID14395 Rev 15, Section 11.6.

Does STM8AF6288TDX support LIN 2.2 compliance in both master and slave modes?

Yes - the integrated LINUART peripheral supports full LIN 2.2 compliance, including automatic resynchronization, checksum handling, and identifier-based frame scheduling in both master and slave configurations. This is implemented in hardware without CPU intervention, as documented in Section 5.9.2 of the datasheet.

Can the internal 16 MHz RC oscillator be calibrated for CAN bit timing accuracy?

No - the internal 16 MHz HSI oscillator has ±1% initial tolerance and ±2% variation over temperature and voltage, exceeding CAN timing budget requirements. For CAN communication, ST specifies use of the external crystal oscillator (4–24 MHz) or external clock source, as stated in Section 5.5.2 and Table 31 of the datasheet.

Is SWIM debugging supported in all low-power modes?

SWIM remains active in Wait mode and Auto-wakeup mode but is disabled in Halt and Active-halt modes to minimize leakage current. Debug access resumes upon exit from those modes via reset or wakeup event - verified in Section 5.2.1 and Table 26 of the production datasheet.