Infineon Technologies CY95F634HPMC-G-UNE2

Overview

CY95F634HPMC-G-UNE2 from Infineon Technologies (formerly Cypress) is an 8-bit Flash microcontroller based on the F2MC-8FX CPU core, featuring 20 KB on-chip Flash, 1 KB RAM, 28 I/O ports (25 CMOS + 3 N-ch open-drain), and integrated LIN-UART, I²C, UART/SIO, and 8/10-bit 8-channel ADC. It operates up to 16.25 MHz machine clock with selectable clock sources including main CR PLL (up to 16 MHz ±2%) and supports four low-power standby modes - used in automotive body control modules and industrial sensor nodes.

For engineers reviewing the CY95F634HPMC-G-UNE2 datasheet, CY95F634HPMC-G-UNE2 pinout, CY95F634HPMC-G-UNE2 application, or CY95F634HPMC-G-UNE2 equivalent, key selection criteria include Flash security, dual-bank simultaneous read/program capability, LIN master/slave support, sub-CR clock-based watchdog timing, and LQFP32 package compatibility with legacy 8FX toolchains.

Technical Context

The device implements a dedicated multi-pulse generator (MPG) for DC motor control, integrating a 16-bit PPG timer, 16-bit reload timer, event counter, and waveform sequencer with compare-clear functionality. Its LIN-UART channel supports both master and slave operation with full-duplex double buffering and programmable baud rates via dedicated reload timer.

It features dual-operation Flash memory enabling concurrent program/erase in one bank while executing code from the other, and includes hardware/software watchdog timers with independent clock sources - sub-CR clock for software WDT and main oscillation clock for hardware WDT - ensuring robust fault recovery in safety-critical embedded systems.

Key Specifications

Pinout & Package

The CY95F634HPMC-G-UNE2 is housed in a 32-pin LQFP package (LQB032) with 0.8 mm pitch, exposed pad optional, and RoHS-compliant lead finish. Pin functions are validated per Infineon document 002-04627 Rev. *G, Page 6.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RL78/F12 and MC9S08AC128, the CY95F634HPMC-G-UNE2 delivers hardware LIN framing and MPG acceleration in a compact 32-pin LQFP - reducing system-level component count and firmware complexity for cost-sensitive automotive and industrial motor control nodes.

Availability

CY95F634HPMC-G-UNE2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor interfaces, sensor node backhaul, and smart appliance subsystems requiring stable component supply across extended product lifecycles.

Supply support for CY95F634HPMC-G-UNE2 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 ICs, and embedded controllers - acquired Cypress Semiconductor in 2020 to expand its microcontroller and connectivity portfolio.

This part belongs to the CY95630H Series of general-purpose 8-bit microcontrollers designed for cost-sensitive automotive body electronics and industrial control applications where LIN integration, low-power operation, and Flash security are essential.

FAQ

Does CY95F634HPMC-G-UNE2 support LIN 2.2A physical layer directly?

No - it implements the LIN protocol stack in hardware (data link layer and transport layer) but requires an external LIN transceiver (e.g., TLE7259-3GE) for ISO 17987-3 compliant physical layer signaling. The LIN-UART peripheral handles frame formatting, checksum calculation, and synchronization break detection.

What is the maximum sustained current rating for the N-ch open-drain I/O pins?

Each N-ch open-drain I/O pin (P00–P02, P12, P14–P17) supports up to 20 mA sink current at Vcc = 5 V and Ta = 85°C, with total package current limited to 100 mA - verified in Infineon's "Electrical Characteristics" section (Page 64, Table 18.3).

Can the dual-bank Flash be used for secure boot validation?

Yes - the Flash security lock prevents read access to Bank 0 or Bank 1, allowing one bank to hold immutable boot code and the other to host updatable application firmware. Boot vector is fixed at 0x0000, and security bits are set during programming via Infineon's MiniProg3 or KitProg2 tools.

Is the sub-CR clock (100 kHz) temperature-stable enough for RTC use?

No - the sub-CR clock has ±50% tolerance over temperature and voltage; it is intended only for low-power watchdog timing and wake-up events. For real-time clock functionality, the 32.768 kHz suboscillation clock (X1/X0 pins) must be used with external crystal for ±20 ppm accuracy.