STMicroelectronics STM8AF5288TCY

Overview

STM8AF5288TCY from STMicroelectronics is an AEC-Q100 Grade 0 qualified automotive 8-bit microcontroller 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. It supports LIN 2.2-compliant communication, 10-bit ADC with 16 multiplexed channels, and operates across -40 °C to +150 °C for engine control and powertrain applications.

For engineers reviewing the STM8AF5288TCY datasheet, STM8AF5288TCY pinout, STM8AF5288TCY application, or STM8AF5288TCY equivalent, key selection criteria include automotive-grade temperature range, on-chip CAN/LIN support, Flash EEPROM coexistence, high sink I/O capability (11 pins), and embedded clock security system with watchdog timers.

Technical Context

The STM8AF5288TCY 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 RC and low-power 128 kHz RC oscillators, plus external crystal support up to 24 MHz with clock security monitoring.

Peripheral integration includes an advanced control timer with dead-time insertion and complementary outputs, two 16-bit general-purpose timers, auto-wakeup timer, and dual watchdogs (window + independent). Analog subsystem features a 10-bit ADC with ±2 LSB total unadjusted error and 1 LSB linearity over full temperature range.

Key Specifications

Pinout & Package

LQFP64 package: 64-pin, 10 × 10 mm low-profile quad flat package with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM8AF6288TCY, the STM8AF5288TCY adds essential CAN 2.0B for powertrain integration; versus STM32F072RBT6, it delivers guaranteed +150 °C operation and native LIN without external components-critical for cost-sensitive, thermally demanding automotive modules.

Availability

STM8AF5288TCY is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply across extended automotive product lifecycles.

Supply support for STM8AF5288TCY 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 ICs, sensors, and automotive-grade silicon for industrial and transportation markets.

The STM8AF series targets automotive applications demanding high reliability, extended temperature operation, and integrated communication peripherals-specifically engineered for powertrain, chassis, and body electronics where AEC-Q100 compliance is mandatory.

FAQ

Is STM8AF5288TCY pin-compatible with other STM8AF52xx variants?

Yes-STM8AF5288TCY uses the LQFP64 package and shares identical pinout with STM8AF5268, STM8AF5269, STM8AF5286, and STM8AF5289. Pin functions, power domains, and reset behavior are fully consistent across this package variant, enabling drop-in replacement within the same footprint.

Does STM8AF5288TCY support SWD or JTAG debugging?

No-it uses ST's proprietary Single Wire Interface Module (SWIM) for programming and debugging via a 4-pin connector (NRST, VDD, VSS, SWIM). SWIM enables full-speed debugging, flash erase/write, and option byte configuration without requiring JTAG/SWD hardware or additional debug probes beyond ST-LINK/V2.

What is the maximum allowed VDD ripple for stable CAN operation?

Per datasheet Section 10.3.2, VDD ripple must remain below ±100 mV peak-to-peak at 100 kHz bandwidth to ensure reliable CAN transceiver operation. This requires proper decoupling with ≥100 nF ceramic capacitors placed within 5 mm of each VDD pin and a bulk 4.7 µF tantalum capacitor near the VCAP terminal.

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

No-the internal 16 MHz RC oscillator has ±1% initial accuracy and ±2.5% variation over temperature, exceeding CAN bit timing tolerance (±1%). CAN bit rate generation requires the external crystal oscillator (HSE) or external clock input with ≤±0.5% stability, as specified in Section 5.5.4 and Table 31 of the datasheet.