STMicroelectronics ST92F124V1QB

Overview

ST92F124V1QB from STMicroelectronics is an 8/16-bit single-voltage Flash microcontroller featuring 128 KB Flash, 8 KB RAM, 1 KB emulated EEPROM (E³™), dual CAN 2.0B interfaces, J1850 BLPD decoder, and a 10-bit 16-channel ADC - deployed in automotive body control modules for LIN/CAN gateway functions.

For engineers reviewing the ST92F124V1QB datasheet, ST92F124V1QB pinout, ST92F124V1QB application, or ST92F124V1QB equivalent, key selection criteria include CAN/LIN co-protocol timing support, in-application programming (IAP) capability, PLL-based clock generation (3–5 MHz crystal), 80 I/O pin count, and E³™ data retention under automotive thermal cycling.

Technical Context

This MCU implements a register-oriented 8/16-bit ST9 core with RUN, WFI, SLOW, HALT, and STOP power modes, enabling low-power wake-up via 16 programmable I/O pins. Its memory management unit (MMU) supports 64-Kbyte segment addressing and 16-Kbyte page mapping for flexible code/data partitioning across Flash, RAM, and E³™ spaces.

The peripheral set includes two multifunction timers (MFTs) with input capture/output compare, two extended function timers (EFTs), a watchdog timer (software/hardware-activated), and dual independent CAN 2.0B controllers - all synchronized to a PLL-derived system clock with minimum instruction time of 83 ns at 24 MHz internal operation.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 80 configurable I/O pins, including dedicated CANH/CANL, LIN-BUS, J1850+, J1850−, SPI, I²C, SCI-M, SCI-A, and EFT/MFT timer signal assignments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ST92F124V1QB, ST92F150CV1 offers expanded Flash without altering pinout or peripheral configuration, whereas SPC560B50L3 sacrifices J1850 and emulated EEPROM for raw performance - making it unsuitable for mixed-protocol automotive gateways requiring backward compatibility.

Availability

ST92F124V1QB is available at Aetrix Electronics and suitable for automotive body electronics, door module gateways, roof controllers, and seat control units requiring stable component supply across extended production lifecycles.

Supply support for ST92F124V1QB 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 broad manufacturing and quality certifications (AEC-Q100, ISO/TS 16949).

The ST92F family was designed specifically for cost-sensitive, high-reliability automotive body electronics requiring mixed-protocol connectivity (CAN, LIN, J1850), integrated nonvolatile storage, and robust operation across -40°C to +125°C.

FAQ

Does ST92F124V1QB support CAN FD?

No. ST92F124V1QB implements CAN 2.0B only, with bit rates up to 1 Mbps and standard 11-bit identifier support. It lacks CAN FD features such as variable data length, CRC enhancements, and bit rate switching. For CAN FD migration paths, ST recommends the SPC58x or STM32G4 series.

What is the endurance rating of the E³™ emulated EEPROM?

The E³™ block is rated for 100,000 write/erase cycles with data retention exceeding 10 years at +85°C ambient. Wear leveling is handled transparently by firmware routines included in ST's standard library, and no user intervention is required for longevity management.

Can ST92F124V1QB operate without an external crystal?

Yes. The device supports internal RC oscillator startup and can run from its internal clock source at reduced accuracy (±2% over temperature). However, CAN, LIN, and J1850 compliance require the PLL driven by a 3–5 MHz crystal for timing precision - making external crystal mandatory in production automotive implementations.

Is there hardware support for LIN 2.1 or later versions?

ST92F124V1QB supports LIN 1.3 and 2.0 via its asynchronous SCI-A interface with 13-bit LIN Synch Break generation. It does not implement LIN 2.1+ features like slave node position detection (SNPD) or auto baud rate detection in hardware - those require firmware-level implementation using timer capture and GPIO monitoring.