STMicroelectronics F272-BAG-P

Overview

F272-BAG-P from STMicroelectronics is a 16-bit ST10F272B microcontroller featuring 256 Kbyte on-chip Flash memory, 12 Kbyte RAM, and dual CAN 2.0B interfaces. It integrates a 64 MHz CPU with MAC unit, 24-channel 10-bit ADC (3 μs conversion), two multi-functional timer units, and 111 GPIO lines. It targets automotive body control modules requiring deterministic real-time response and fail-safe operation.

For engineers reviewing the F272-BAG-P datasheet, F272-BAG-P pinout, F272-BAG-P application, or F272-BAG-P equivalent, key selection criteria include its 64 MHz instruction cycle time (31.25 ns), dual CAN bus support with 64-message object buffer, 256 Kbyte single-voltage Flash with 100K erase/program cycles, and integrated oscillator watchdog for ASIL-B–capable system monitoring.

Technical Context

The ST10F272B implements a 16-bit CISC CPU with DSP-enhanced instruction set, including dedicated multiply-accumulate (16×16 → 40-bit) and single-cycle context switching. Its memory architecture supports up to 16 Mbyte linear address space, with configurable external bus interface featuring five chip-select signals and hold-acknowledge arbitration.

Real-time capability is reinforced by an 16-level priority interrupt system with 56 sources and 15.6 ns sampling resolution, coupled with two capture/compare units (16 channels each), a 4-channel PWM + 4-channel XPWM subsystem, and dual CAN controllers compliant with ISO 11898-1 (2.0B).

Key Specifications

Pinout & Package

PQFP144 (28 × 28 × 3.4 mm) plastic quad flat package with 144 leads; RoHS-compliant, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.

Compared with ST10F272B, ST10F262 reduces Flash and removes one CAN channel-limiting network scalability-while C167CR-LM lacks reprogrammable Flash and oscillator fault detection, compromising functional safety compliance in evolving ECU designs.

Availability

F272-BAG-P is available at Aetrix Electronics and suitable for automotive body control units, industrial CAN gateways, motor drive controllers, and smart power distribution modules requiring stable component supply across extended product lifecycles.

Supply support for F272-BAG-P 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, specializing in automotive, industrial, and power management ICs with strong functional safety certification expertise.

The ST10 family was designed specifically for deterministic real-time automotive applications, emphasizing CAN integration, fail-safe peripherals, and robust Flash reliability under harsh environmental conditions.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time of the F272-BAG-P?

The F272-BAG-P operates at a maximum CPU clock frequency of 64 MHz, delivering a 31.25 ns instruction cycle time. This timing is achieved using the on-chip PLL with a 4–8 MHz crystal input, and is validated across the full industrial temperature range (–40°C to +85°C) per datasheet Section 24.8.7.

Does the F272-BAG-P support in-application programming (IAP) of its Flash memory?

Yes, the F272-BAG-P supports full in-application programming via its dedicated Flash control and data registers (FCR0/1, FDR0/1). The Flash module allows sector erase and byte/word programming while executing code from other memory regions, with hardware write-protection and error detection as specified in Sections 5.3–5.5 of the datasheet.

How many CAN message objects does the F272-BAG-P support, and how are they allocated?

The F272-BAG-P supports up to 64 CAN message objects total, configurable across its two independent CAN controllers. Allocation is flexible: users may assign all 64 to one CAN bus or split them (e.g., 32+32) for dual-bus operation. Message objects include full identifier masking, FIFO buffering, and timestamping, per Section 17.1.

Is the F272-BAG-P qualified for automotive applications, and what safety features does it include?

Yes, the F272-BAG-P is qualified to AEC-Q100 Grade 2 (–40°C to +105°C) and includes multiple ASIL-B–supporting features: oscillator watchdog (detects crystal failure within 2 ms), programmable windowed watchdog timer, Flash non-volatile protection registers, and fail-safe reset circuitry with asynchronous/synchronous/warm reset modes per Section 20.