Microchip Technology CEC1702Q-C2-I/SX

Overview

CEC1702Q-C2-I/SX 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 supports 3.3V/1.8V I/O, ACPI compliance, VBAT/VTR dual power planes, and operates in deep sleep with sub-30μs RTC wake-up-designed for secure firmware management in IoT platform baseboard management units.

For engineers reviewing the CEC1702Q-C2-I/SX datasheet, CEC1702Q-C2-I/SX pinout, CEC1702Q-C2-I/SX application, or CEC1702Q-C2-I/SX equivalent, key selection criteria include secure boot capability, VBAT-backed RTC and 128-byte RAM, dual I2C/SMBus controllers with standby operation, 65 GPIOs with programmable drive strength, and hardware-accelerated SHA-512/AES-256 for trusted execution environments.

Technical Context

The CEC1702Q-C2-I/SX implements a Von Neumann architecture with single 4GB address space, bit-banding, NVIC supporting 240 interrupt sources at 8 priority levels, and chip-level interrupt aggregator to extend vector capacity. Its debug infrastructure includes JTAG/SWD-DAP, DWT with 4 data watchpoints, FPB with 6 execution breakpoints, and full ITM/TPIU trace support.

Cryptographic subsystem comprises three dedicated engines: AES (ECB/CTR/CBC/OFB, 128–256-bit keys), SHA-1/256/512 hash engine, and public-key engine supporting RSA up to 4096-bit and ECC up to 640-bit-each with DMA access to shared SRAM and integrated TRNG with 1K-bit FIFO.

Key Specifications

Pinout & Package

CEC1702Q-C2-I/SX uses an 84-pin Wafer-Level Fine-Pitch Ball Grid Array (WFBGA) package measuring 4.0 × 4.0 mm with 0.4 mm ball pitch, optimized for compact IoT and server baseboard designs requiring low-profile mounting and thermal efficiency.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CEC1702Q-C2-I/SX, the CEC1702Q-C2-I/MX sacrifices VCI interface pins and GPIO count for QFN manufacturability, while the STM32L4P5VGT6 lacks hardware-accelerated cryptography, VBAT retention, and secure boot ROM-making it unsuitable for regulated IoT or medical platforms requiring NIST/FIPS-aligned trust anchors.

Availability

CEC1702Q-C2-I/SX is available at Aetrix Electronics and suitable for server BMCs, IoT edge gateways, smart building controllers, and medical device power supervisors requiring stable component supply across extended product lifecycles.

Supply support for CEC1702Q-C2-I/SX 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and security ICs for industrial, automotive, and communications markets.

The CEC1702 product line delivers cryptographic embedded controllers optimized for secure firmware management, battery-backed real-time control, and low-power IoT platform subsystems-targeting applications where hardware-rooted trust and power resilience are mandatory.

FAQ

What is the operating voltage range for CEC1702Q-C2-I/SX I/O pins?

CEC1702Q-C2-I/SX supports dual I/O voltage operation: GPIOs are configurable for either 1.8V or 3.3V logic levels, with all pins rated for 1.8V operation and select pins offering over-voltage tolerance up to 5.5V when powered by 3.3V VTR rails. This enables direct interfacing with mixed-voltage peripherals without level-shifting circuitry.

Does CEC1702Q-C2-I/SX support secure boot from external SPI flash?

Yes, CEC1702Q-C2-I/SX implements a hardware root of trust with immutable boot ROM that authenticates external SPI flash images prior to loading. It supports both primary and fallback firmware images, AES-256 encryption of stored firmware, and validates digital signatures using its integrated RSA/ECC engine-ensuring only authorized, unmodified code executes.

How does the VBAT power plane function in CEC1702Q-C2-I/SX?

The VBAT power plane in CEC1702Q-C2-I/SX maintains operation of critical resources during main power loss, including the 32.768 kHz RTC, week timer, 128-byte battery-backed SRAM, VCI_IN# control inputs, and BGPO0 output. It enables wake-up events, time-stamped logging, and secure state retention without external backup circuitry.

What debugging interfaces are available on CEC1702Q-C2-I/SX?

CEC1702Q-C2-I/SX provides dual debug paths: a JTAG/SWD debug port compliant with ARM CoreSight standards-including SWJ-DP, AHB-AP, DWT, FPB, ITM, and TPIU-and a dedicated Trace FIFO Debug Port (TFDP) for non-intrusive real-time firmware tracing without halting CPU execution.

Can CEC1702Q-C2-I/SX generate PWM waveforms while in deep sleep mode?

Yes, CEC1702Q-C2-I/SX supports blinking and breathing LED PWM generation in its deepest system sleep state using the 32.768 kHz standby clock. Two dedicated LED interfaces operate on VTR/VBAT power, delivering programmable blink rates, piecewise-linear brightness curves, and 8-bit PWM resolution without waking the ARM core.