Infineon Technologies CY9AF154NBBGL-GK9E1

Overview

CY9AF154NBBGL-GK9E1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB dual-bank Flash (496 KB upper + 16 KB lower), 64 KB on-chip SRAM (32 KB SRAM0 + 32 KB SRAM1), and operation up to 40 MHz. It integrates UART/CSIO/I²C serial interfaces, 24-channel 12-bit ADC (2.0 μs conversion), 16-channel base timer, RTC, QPRC, HDMI-CEC, and six low-power modes - deployed in industrial motor control and embedded HMI systems.

For engineers reviewing the CY9AF154NBBGL-GK9E1 datasheet, CY9AF154NBBGL-GK9E1 pinout, CY9AF154NBBGL-GK9E1 application, or CY9AF154NBBGL-GK9E1 equivalent, key selection criteria include dual-bank Flash execution capability, 5 V-tolerant GPIO count (up to 103 pins in LQM120), SRAM partitioning for real-time task isolation, and hardware-accelerated CRC16/CRC32 support for firmware integrity verification.

Technical Context

This MCU implements a tightly coupled Arm Cortex-M3 r2p1 core with integrated NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features independent I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent instruction fetch and data access without contention.

The peripheral architecture includes an 8-channel DMA controller with 32-bit addressing, multi-function serial interface configurable per channel as UART/CSIO/I²C, and dedicated motor-control blocks including PWM, dead-time insertion, and A/D activation compare - all synchronized via shared clock domains derived from Main PLL, sub-clock (32.768 kHz), or internal CR oscillators.

Key Specifications

Pinout & Package

This device is packaged in a 120-pin LQFP (LQM120) with exposed thermal pad, RoHS-compliant, moisture sensitivity level 3. Pin functions are fully relocatable via port relocation registers, enabling flexible PCB layout and peripheral remapping without hardware changes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, CY9AF154NBBGL-GK9E1 uniquely combines dual-bank Flash, QPRC, HDMI-CEC, and sub-clock RTC retention - making it optimal for cost-sensitive, mixed-signal embedded systems requiring concurrent real-time control and low-power communication.

Availability

CY9AF154NBBGL-GK9E1 is available at Aetrix Electronics and suitable for industrial motor control, smart home HMI, and factory automation I/O modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for CY9AF154NBBGL-GK9E1 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 German semiconductor leader specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.

The CY9AF154NBBGL-GK9E1 belongs to the FM3 family - a line of cost-optimized, low-power 32-bit Arm Cortex-M3 microcontrollers designed specifically for industrial motor drives, building automation, and consumer electronics with stringent real-time and power-efficiency requirements.

FAQ

What package type and pin count does CY9AF154NBBGL-GK9E1 use?

CY9AF154NBBGL-GK9E1 uses a 120-pin LQFP package (LQM120) with exposed thermal pad. This package supports up to 103 general-purpose I/O pins, including 5 V-tolerant options, and is rated for industrial temperature range (−40°C to +85°C). Pin assignments are documented in Section 3.1 of the official datasheet (Document No. 002-05646 Rev. *F).

Does this MCU support true background Flash programming during runtime?

Yes - CY9AF154NBBGL-GK9E1 implements dual-operation Flash memory with physically separate upper and lower banks. Code can execute from the upper bank while the lower bank undergoes erase/write operations, enabling safe firmware updates without halting real-time tasks or resetting the system.

Is the RTC retained in Deep Standby Stop mode?

No - RTC operation and timekeeping are suspended in Deep Standby Stop mode. However, the RTC remains fully functional and retains time/date values in Deep Standby RTC mode, where only the 32.768 kHz sub-clock and RTC circuitry remain active, drawing less than 1 μA typical current.

Can the QPRC interface directly drive standard incremental encoders?

Yes - the Quadrature Position/Revolution Counter (QPRC) accepts standard A/B/Z phase signals from industry-standard incremental encoders. Its programmable edge detection on AIN, BIN, and ZIN pins supports both rising/falling edge configurations, and the 16-bit position counter automatically handles direction and overflow without CPU intervention.