Microchip Technology CEC1702Q-C1-SX-TR

Overview

CEC1702Q-C1-SX-TR from Microchip Technology is a cryptographic embedded controller featuring an ARM Cortex-M4F core with hardware FPU, 480KB SRAM (416KB + 64KB), 64KB boot ROM, and integrated AES/SHA/RSA cryptographic engines. It operates at 3.3V and 1.8V, supports ACPI-compliant power management with VTR/VBAT planes, and delivers secure boot from external SPI Flash for IoT platform firmware integrity.

For engineers reviewing the CEC1702Q-C1-SX-TR datasheet, CEC1702Q-C1-SX-TR pinout, CEC1702Q-C1-SX-TR application, or CEC1702Q-C1-SX-TR equivalent, key selection criteria include VBAT-backed RTC and alarm timers, dual I2C/SMBus controllers with standby operation, 65 GPIOs with programmable drive strength, hardware cryptographic acceleration, and 84-pin WFBGA packaging for space-constrained embedded security subsystems.

Technical Context

The CEC1702Q-C1-SX-TR implements a Von Neumann architecture with single 4GB address space and little-endian byte ordering, supporting bit-banding and NVIC with 240 interrupt sources and 8 priority levels. Its debug infrastructure includes JTAG/SWD DAP, DWT with 4 data watchpoints, FPB with 6 execution breakpoints, and full ITM/TPIU trace support.

Power management integrates two standby power planes (VTR and VBAT), enabling low-current sleep mode operation with VBAT-powered resources including RTC, week timer, 128-byte SRAM, and wake-up inputs. Cryptographic subsystems feature dedicated DMA-shared AES (128/192/256-bit), SHA-1/256/512, and RSA/ECC engines with immutable secure boot loader verifying SPI Flash images.

Key Specifications

Pinout & Package

CEC1702Q-C1-SX-TR uses an 84-pin WFBGA package with 0.5mm pitch, supporting VTR and VBAT power domains, glitch-protected GPIOs, and over-voltage tolerant pins (5.5V on 3.3V rails, 3.6V on 1.8V rails).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CEC1702Q-C1-SX-TR, the CEC1702Q-C2-SX-TR offers identical hardware functionality but distinct eFUSE boot configuration, while the CEC1302-I/ML provides reduced cryptographic capability and core performance in a smaller package-making it suitable only for less demanding security use cases.

Availability

CEC1702Q-C1-SX-TR is available at Aetrix Electronics and suitable for server platform management, industrial IoT gateways, and smart building controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for CEC1702Q-C1-SX-TR 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

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and security solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The CEC1702Q-C1-SX-TR belongs to Microchip's Cryptographic Embedded Controller family, designed specifically for secure, low-power, ACPI-compliant platform management in IoT edge devices and enterprise infrastructure.

FAQ

What is the primary function of the CEC1702Q-C1-SX-TR in system architecture?

The CEC1702Q-C1-SX-TR serves as a dedicated cryptographic embedded controller for platform management, executing secure boot, hardware-accelerated encryption/decryption, real-time sensor interfacing, and low-power system supervision. Its ARM Cortex-M4F core, VBAT-backed RTC, and integrated AES/SHA/RSA engines make it ideal for trusted firmware execution and out-of-band control in servers and IoT gateways-distinct from general-purpose MCUs due to its hardened security peripherals and ACPI compliance.

Does the CEC1702Q-C1-SX-TR support secure boot from external flash memory?

Yes, the CEC1702Q-C1-SX-TR implements a hardware root of trust with immutable boot ROM that authenticates and loads firmware from external SPI Flash. It verifies digital signatures using its integrated RSA engine and supports AES-256 encryption of stored images, ensuring only cryptographically signed and encrypted code executes-critical for preventing unauthorized firmware modification in CEC1702Q-C1-SX-TR deployments.

How does the CEC1702Q-C1-SX-TR manage power during system sleep states?

The CEC1702Q-C1-SX-TR uses dual power planes-VTR (standby) and VBAT (backup)-to maintain critical functions during deep sleep. VBAT powers the RTC, week timer, 128-byte SRAM, and wake-up inputs independently of main power, while VTR supplies I2C, LED, and keyboard interfaces operating on the 32.768kHz standby clock. This architecture enables sub-microamp standby current and reliable wake-up event handling in CEC1702Q-C1-SX-TR systems.

Can the CEC1702Q-C1-SX-TR interface directly with I2C sensors while in low-power mode?

Yes, all four I2C host controllers in the CEC1702Q-C1-SX-TR remain fully operational on VTR standby power, supporting clock stretching, multi-master arbitration, and programmable bus speeds up to 1MHz-even in the system's deepest sleep state. This allows continuous sensor polling or event-driven wake-up without waking the host processor, making CEC1702Q-C1-SX-TR suitable for always-on environmental monitoring in battery-constrained applications.

What debugging interfaces are available on the CEC1702Q-C1-SX-TR?

The CEC1702Q-C1-SX-TR provides JTAG/SWD debug access via dedicated pins (TMS, TDO, TDI, TCK) and a Trace FIFO Debug Port (TFDP) for real-time instruction tracing. It supports full ARM-standard debug features including DWT watchpoints, FPB breakpoints, ITM instrumentation, and TPIU trace output-enabling comprehensive firmware validation and performance profiling during CEC1702Q-C1-SX-TR development without requiring external debug probes beyond standard SWD adapters.