Infineon Technologies CY9BF122LPMC1-G-MNE2

Overview

CY9BF122LPMC1-G-MNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), and operation up to 72 MHz. It integrates UART/CSIO/I²C/LIN serial interfaces, dual 12-bit ADCs (0.8 µs conversion), two 10-bit DACs, eight base timers, RTC, watchdog timers, CRC accelerator, and supports six low-power modes including Deep Standby RTC. Used in industrial motor control and embedded sensor nodes requiring deterministic real-time response.

For engineers reviewing the CY9BF122LPMC1-G-MNE2 datasheet, CY9BF122LPMC1-G-MNE2 pinout, CY9BF122LPMC1-G-MNE2 application, or CY9BF122LPMC1-G-MNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 5 V-tolerant GPIOs on selected pins, LIN 2.1 compliance, hardware CRC32 acceleration, and sub-32.768 kHz wake-up capability from Deep Standby Stop mode.

Technical Context

This MCU implements the Arm Cortex-M3 r2p1 core with tightly coupled I-code/D-code buses feeding SRAM0 and a system bus for SRAM1, enabling concurrent instruction fetch and data access. Its dual-operation Flash allows simultaneous read-erase-write across upper (240 KB) and lower (16 KB main + 32 KB work) banks - critical for robust over-the-air updates without halting execution.

The peripheral set is optimized for real-time embedded control: LIN 2.1 support includes configurable break field (13–16 bit) and delimiter (1–4 bit); QPRC units provide 16-bit position/revolution counting with AIN/BIN/ZIN edge configuration; and the multi-function timer delivers PWM, dead-time insertion, and A/D activation triggers for motor drive applications.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VET6 and RL78/F13, CY9BF122LPMC1-G-MNE2 uniquely combines dual-bank Flash for zero-downtime updates, integrated LIN 2.1 PHY, and hardware-accelerated CRC32 - delivering lower system-level BOM count and faster certification for industrial and automotive control nodes.

Availability

CY9BF122LPMC1-G-MNE2 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart sensor node designs requiring stable component supply, long-term lifecycle assurance, and qualified production traceability.

Supply support for CY9BF122LPMC1-G-MNE2 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, industrial, and security solutions.

This device belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded control applications demanding real-time responsiveness, functional safety readiness, and mixed-signal integration.

FAQ

What is the maximum operating frequency and core revision of CY9BF122LPMC1-G-MNE2?

The CY9BF122LPMC1-G-MNE2 operates at up to 72 MHz and implements the Arm Cortex-M3 processor version r2p1. This revision includes full NVIC support with 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for OS task scheduling - confirmed in the official Infineon FM3 Peripheral Manual and datasheet revision *K.

Does this MCU support true dual-bank Flash operation with concurrent read/erase/write?

Yes. The 256 KB Flash is physically divided into upper (240 KB) and lower (16 KB main + 32 KB work) banks. Each bank operates independently: one can execute code while the other is erased or programmed. This enables atomic firmware updates without halting application execution - verified in Section 2.2 "On-chip Memories" of datasheet 002-05655 Rev. *K.

Which pins are 5 V tolerant, and how is this configured?

Specific GPIO pins (e.g., PA0–PA7, PB0–PB7, PC0–PC7 per "I/O Circuit Type" table in datasheet page 31) are 5 V tolerant when VCC ≥ 2.7 V. Tolerance is hardwired - no register configuration required. Pin-by-pin tolerance status is defined in the "List of Pin Functions" and "I/O Circuit Type" sections (pages 15 and 31), not enabled via software.

What low-power modes retain RAM content, and what is the minimum current draw?

Deep Standby RTC and Deep Standby Stop modes both support optional RAM retention. In Deep Standby Stop with RAM retained, typical current draw is 1.5 µA at 25°C (VCC = 3.3 V, sub-clock active). This value is measured under specified conditions in Section 12.3.1 "Current Rating" of datasheet 002-05655 Rev. *K - not extrapolated or estimated.