Microchip Technology EEC1727-I/2GW

Overview

EEC1727-I/2GW from Microchip Technology is a 32-bit ARM® Cortex-M4F embedded controller with secure boot, hardware crypto acceleration (AES-256, ECDSA, SHA-512, RSA up to 4096-bit), 416KB SRAM, and support for ACPI S0–S5 power states - designed for security-critical storage enclosures and low-power PC platform management.

For engineers reviewing the EEC1727-I/2GW datasheet, EEC1727-I/2GW pinout, EEC1727-I/2GW application, or EEC1727-I/2GW equivalent, key selection considerations include its dual-voltage I/O (1.8 V / 3.3 V), 68-pin WFBGA package, integrated RTC and hibernation timers, 5 SMBus/I²C controllers, and hardware root of trust enabling authenticated firmware loading from external SPI flash.

Technical Context

The EEC1727-I/2GW implements a fixed-point ARM Cortex-M4F core running at up to 96 MHz with tightly coupled memory architecture (352KB code-optimized + 64KB data-optimized SRAM) and a dedicated Boot ROM containing secure bootloader APIs. Its interrupt subsystem includes an EC Interrupt Aggregator and NVIC with 8 priority levels, supporting maskable wake events across all sleep modes.

Power management is implemented via chip-level Light/Heavy Sleep modes, VBAT-backed 128-byte SRAM and RTC, and hardware-controlled wake sources including GPIO, RTC alarms, hibernation timer, week timer, and TACH inputs - all while maintaining full peripheral operability in standby power domains.

Key Specifications

Pinout & Package

EEC1727-I/2GW is housed in a 68-pin Wafer-Level Fine-Pitch Ball Grid Array (WFBGA) package with 0.4 mm ball pitch and 4.0 mm × 4.0 mm body size. The package supports dual supply rails (VTR1 = 3.3 V, VTR2 = 1.8 V/3.3 V, VTR3 = 1.8 V) and includes dedicated VBAT, VSS, VSS_ADC, and VREF_ADC balls for analog integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with EEC1727-I/2GW, IT5570E offers lower gate count and cost but no hardware root of trust, while NCT6798D provides x86 toolchain continuity at the expense of crypto performance and power efficiency - making EEC1727-I/2GW optimal for new designs requiring FIPS-aligned secure boot and mixed-signal integration.

Availability

EEC1727-I/2GW is available at Aetrix Electronics and suitable for storage enclosure management, server platform controller hub interface, and industrial PC power management requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for EEC1727-I/2GW 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, with global design centers and ISO 9001-certified manufacturing.

The EEC1727 product line delivers highly configurable, mixed-signal embedded controllers targeting security-first storage platforms and ACPI-compliant PC architectures - emphasizing hardware-enforced secure boot, low-power operation, and integrated sensor/peripheral management.

FAQ

What is the maximum operating frequency of the EEC1727-I/2GW CPU core?

The EEC1727-I/2GW integrates an ARM Cortex-M4F processor core with programmable clock frequency up to 96 MHz. This maximum frequency is achieved using the internal 96 MHz PLL and is supported across the full -40°C to +85°C operating temperature range under 3.3 V supply conditions. The EEC1727-I/2GW maintains deterministic timing at this rate due to its tightly coupled memory architecture and cache-enabled instruction fetch path.

Does the EEC1727-I/2GW support secure boot from external SPI flash?

Yes, the EEC1727-I/2GW supports secure boot from external SPI flash using its hardware root of trust. The Boot ROM verifies ECDSA signatures and decrypts AES-256 encrypted firmware images stored in external SPI flash (e.g., SST25PF040C) before loading into SRAM. The EEC1727-I/2GW also supports dual-image fallback and OTP-stored keys for key revocation and roll-back protection.

How many independent I²C/SMBus controllers does the EEC1727-I/2GW include?

The EEC1727-I/2GW includes five fully independent SMBus/I²C controllers, with six configurable I²C ports routed through a full crossbar switch. Each controller supports promiscuous mode, clock stretching, multi-master operation, and DMA-assisted transfers. All five controllers remain fully operational in standby power mode - a capability confirmed in the DS00003840A datasheet Section 12.0.

What are the GPIO voltage compatibility options for the EEC1727-I/2GW?

The EEC1727-I/2GW features three separate GPIO voltage domains: one bank (VTR1) operates at 3.3 V, one bank (VTR3) at 1.8 V, and one bank (VTR2) configurable for either 1.8 V or 3.3 V. This allows direct interfacing with both legacy 3.3 V platform controller hubs and modern 1.8 V silicon. All 55 GPIOs support programmable drive strength (2–12 mA), glitch protection, and under-voltage tolerance.

Is the EEC1727-I/2GW pin-compatible with other members of the EEC17xx family?

No, the EEC1727-I/2GW is not pin-compatible with other EEC17xx variants such as EEC1725 or EEC1726. While all share the same 68-pin WFBGA package footprint, the pin multiplexing, power rail assignments, and alternate function mappings differ significantly - as documented in Table 2-1 and Section 2.4 of DS00003840A. Board-level reuse requires verification against the specific variant's pinout table.