Infineon Technologies MB95F203KPF-G-SNE2

Overview

MB95F203KPF-G-SNE2 from Cypress Semiconductor is an 8-bit F2MC-8FX microcontroller in 20-pin SOP package, featuring 8 KB Flash, 496 B RAM, 17 I/O (15 CMOS + 2 N-ch open-drain), 6-channel 8/10-bit A/D converter, LIN-UART interface, and dual 8/16-bit composite timers - deployed in automotive body control modules for sensor signal acquisition and actuator drive.

For engineers reviewing the MB95F203KPF-G-SNE2 datasheet, MB95F203KPF-G-SNE2 pinout, MB95F203KPF-G-SNE2 application, or MB95F203KPF-G-SNE2 equivalent, key selection criteria include LIN-UART master/slave capability, sub-OSC clock support (32.768 kHz), hardware watchdog with sub-CR clock source, and flash security protection against unauthorized read/write.

Technical Context

This MCU implements the F2MC-8FX CPU core with 136-instruction set, 1–3 byte instruction length, and 61.5 ns minimum execution time at 16.25 MHz machine clock. It supports three standby modes (stop, sleep, watch) and integrates a clock supervisor counter to monitor main oscillator stability.

The LIN-UART provides full-duplex double-buffered communication with selectable baud rates via reload timer, enabling both clock-synchronized and asynchronous serial transfer. The 8/16-bit composite timer includes PWM, input capture, and PWC functions with seven internal clock sources and external clock input options.

Key Specifications

Pinout & Package

MB95F203KPF-G-SNE2 uses a 20-pin plastic SOP (Small Outline Package) with 300-mil body width and standard JEDEC MS-013AC footprint. Pin assignments are validated per Document 002-07463 Rev. *B, Page 17–19.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB95F204KPF-G-SNE2, this part trades Flash capacity for lower cost while retaining full LIN-UART and A/D functionality; versus MB95F202KPF-G-SNE2, it delivers essential LIN and analog features missing in the entry-level variant.

Availability

MB95F203KPF-G-SNE2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial temperature controllers, smart appliance motor drives, and medical infusion pump controllers requiring stable component supply across long production lifecycles.

Supply support for MB95F203KPF-G-SNE2 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

Cypress Semiconductor is a global leader in embedded solutions, delivering differentiated microcontrollers, analog ICs, connectivity products, and high-performance memories for automotive, industrial, and medical markets.

This device belongs to the MB95200H/210H series - designed specifically for cost-optimized, low-power 8-bit control in automotive body electronics and industrial subsystems requiring LIN compliance and robust analog integration.

FAQ

Does MB95F203KPF-G-SNE2 support LIN 2.1 protocol?

No - the integrated LIN-UART supports LIN 2.0 specification only, including master/slave operation, checksum calculation, and automatic sync-break detection. LIN 2.1 enhancements such as event-triggered frames and improved error handling are not implemented in this silicon revision.

What is the maximum allowed external clock frequency on HCLK1/HCLK2 pins?

HCLK1 and HCLK2 accept external clock inputs up to 32.5 MHz, yielding a maximum machine clock frequency of 16.25 MHz. This is confirmed in Section 3.1 "Clock" of Document 002-07463 Rev. *B, and applies regardless of whether the main OSC or internal CR clock is selected as primary source.

Can the sub-internal CR clock be used as the watchdog timer source?

Yes - the hardware watchdog timer can be clocked by the sub-internal CR oscillator (50–200 kHz), enabling reliable timeout generation even when main clock fails. This configuration is explicitly supported and documented in the "Hardware/Software Watchdog Timer" section on page 3 of the datasheet.

Is RSTX/PF2 pin required for normal operation or only during programming?

RSTX/PF2 is a dedicated active-low reset input required for both normal operation and programming. It must be pulled high via external resistor during runtime; failure to do so causes continuous reset assertion. During on-chip debug or flash programming, it must be driven low by the evaluation tool to enter programming mode.