Infineon Technologies CYSHM35925I-M068LTIT

Overview

CYSHM35925I-M068LTIT from Infineon Technologies (formerly Cypress) is a full-programmable embedded system controller based on the ARM® Cortex™-M0 CPU, integrating programmable analog/digital blocks, 12-bit SAR ADC (806 ksps), four opamps with comparator mode, and four reconfigurable serial communication blocks (I²C/SPI/UART). It operates from 1.71–5.5 V and supports Deep Sleep mode at 20 nA with GPIO wakeup, targeting smart sensor hubs and industrial control edge nodes.

For engineers reviewing the CYSHM35925I-M068LTIT datasheet, CYSHM35925I-M068LTIT pinout, CYSHM35925I-M068LTIT application, or CYSHM35925I-M068LTIT equivalent, key selection criteria include its 68-pin QFN package, 55 programmable GPIOs with LCD drive capability, ARM Serial Wire Debug (SWD) interface, flash protection security model, and field-tunable analog/digital subsystems.

Technical Context

The device implements a multi-layer AHB-Lite interconnect architecture with dedicated analog clock domain leading digital clocks to minimize noise coupling during ADC sampling. Its programmable analog subsystem includes two CTBm blocks supporting opamp, comparator, and IDAC configurations with Deep Sleep retention.

System-level timing relies on three independent oscillators: IMO (3–48 MHz, ±2% calibrated), ILO (32 kHz, low-power Deep Sleep), and WCO (32 kHz crystal for RTC/WDT). The SWD debug interface provides full on-chip debugging without external pods, with four address breakpoints and two data watchpoints.

Key Specifications

Pinout & Package

68-pin QFN package (10 mm × 10 mm, 0.5 mm pitch), assembled with Ultra Low Alpha (ULA) mold compound to mitigate soft errors. Pinout validated per SHM35920-M Family Datasheet (002-13261 Rev. *B), Page 8.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable embedded controller applications.

Compared with CY8C4248LQI-BL583 and STM32L476RG, CYSHM35925I-M068LTIT uniquely combines field-reconfigurable analog/digital logic, ultra-low-power Deep Sleep with analog retention, and hardware-enforced security-enabling single-chip sensor hub and secure industrial edge designs without external components or compromise.

Availability

CYSHM35925I-M068LTIT is available at Aetrix Electronics and suitable for smart sensor hubs, industrial edge controllers, medical wearables, and energy meter front-ends requiring stable component supply, long lifecycle support, and qualified automotive/industrial grade sourcing.

Supply support for CYSHM35925I-M068LTIT 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 microcontrollers, and secure embedded solutions.

CYSHM35925I-M068LTIT belongs to the SHM 35-Series platform-a scalable, full-programmable embedded controller family designed for intelligent edge devices requiring adaptive analog/digital functionality, ultra-low-power operation, and hardware-rooted security.

FAQ

What debug interfaces does CYSHM35925I-M068LTIT support?

CYSHM35925I-M068LTIT supports only the ARM Serial Wire Debug (SWD) interface-two-wire, JTAG-compatible, with four address breakpoints and two data watchpoints. No JTAG TAP or SWO trace output is implemented. Debug is enabled by default and can be permanently disabled via firmware, requiring full device erase to re-enable.

Does CYSHM35925I-M068LTIT support external memory expansion?

No. CYSHM35925I-M068LTIT does not provide external memory bus interfaces (e.g., FSMC, SPI memory controller with XIP). All code and data execution occurs from on-chip 128 kB flash and 16 kB SRAM. Flash can emulate EEPROM via software routines, but no parallel or quad-SPI external memory interface is available.

Can the SAR ADC operate independently during Deep Sleep mode?

Yes-the 12-bit SAR ADC can perform autonomous conversions in Deep Sleep mode using the ILO or WCO clock source. Sequencer scan runs without CPU intervention, and conversion results are stored in dedicated SRAM locations retained during Deep Sleep. Wakeup from Deep Sleep occurs only upon completion or interrupt trigger, not per-sample.

Is the 68-pin QFN package RoHS and REACH compliant?

Yes. CYSHM35925I-M068LTIT uses lead-free, halogen-free packaging compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The Ultra Low Alpha (ULA) mold compound meets JEDEC JESD22-A119 standards for alpha particle emission rate (<0.001 α/cm²·hr), qualifying it for long-life industrial and medical applications.