STMicroelectronics STM8AF6213PDU

Overview

STM8AF6213PDU from STMicroelectronics is an AEC-Q100 qualified automotive-grade 8-bit microcontroller featuring a 16 MHz STM8A core, 4 Kbyte Flash memory, 640 byte data EEPROM, 10-bit ADC with 7 muxed channels, LIN 2.2-compliant UART, and operation up to 150 °C. It targets engine control units, body electronics, and LIN bus nodes in passenger vehicles.

For engineers reviewing the STM8AF6213PDU datasheet, STM8AF6213PDU pinout, STM8AF6213PDU application, or STM8AF6213PDU equivalent, key selection criteria include automotive temperature range (–40 to 150 °C), LIN master/slave capability with automatic resynchronization, high-sink I/O (21 pins), and dual RC oscillator trimming for clock stability across voltage and temperature.

Technical Context

The STM8AF6213PDU implements a Harvard-architecture STM8A core with 3-stage pipeline and extended instruction set, enabling deterministic real-time execution in safety-critical automotive subsystems. Its clock system integrates user-trimmable 16 MHz HSI and 128 kHz LSI oscillators plus external crystal support, all monitored by a dedicated clock security system.

Interrupt handling uses a nested controller supporting 32 vectors with up to 28 external interrupt sources on 7 priority levels. Memory subsystem includes 4 Kbyte Flash with 20-year data retention at 55 °C after 1 kcycle and 640 byte true EEPROM rated for 300 kwrite cycles-both protected by configurable read-out and write protection.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8AF6223PDU, the STM8AF6213PDU trades Flash capacity for lower unit cost in fixed-function nodes; versus RL78/F13, it delivers integrated LIN and higher temperature resilience without external components.

Availability

STM8AF6213PDU is available at Aetrix Electronics and suitable for engine control modules, body electronics systems, and climate control units requiring stable component supply across automotive production lifecycles.

Supply support for STM8AF6213PDU 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 ICs with vertical manufacturing and AEC-Q100 validation expertise.

The STM8AF product line delivers cost-optimized, high-reliability 8-bit MCUs specifically engineered for automotive body, powertrain, and chassis applications demanding extended temperature operation and functional safety readiness.

FAQ

Is STM8AF6213PDU pin-compatible with STM8AF6223PDU?

Yes, both devices share identical LQFP32 pinout, memory map, and peripheral register layout. The STM8AF6223PDU provides 8 Kbyte Flash versus 4 Kbyte in the STM8AF6213PDU, but all I/O, timer, ADC, and communication interfaces are functionally identical and software-compatible.

Does STM8AF6213PDU require an external LIN transceiver?

No. The integrated LINUART peripheral complies fully with LIN 2.2 and supports both master and slave modes with automatic resynchronization. An external transceiver is only needed for physical layer level-shifting in high-noise environments or when driving long bus segments beyond 40 m.

What is the maximum allowed junction temperature for continuous operation?

The device is rated for continuous operation at 150 °C junction temperature, validated per AEC-Q100 Grade 0. Thermal derating is not required below this limit, and the on-chip temperature sensor (accessible via ADC internal channel) enables closed-loop thermal monitoring in real time.

Can the internal 16 MHz RC oscillator meet LIN baud rate accuracy requirements?

Yes-after user trimming using the provided calibration procedure, the oscillator achieves ±1% accuracy across –40 to 150 °C and 3.3–5.5 V, satisfying LIN 2.2's ±1.5% baud rate tolerance. No external crystal is required for basic LIN node functionality.