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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Microchip Technology MEC1414-I/NU

Name: MEC1414-I/NU
Brand: Microchip Technology
SKU: MEC1414-I/NU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MEC1414-I/NU

Manufacturer:: Microchip Technology

Category:: Application Specific Microcontrollers

Package:: 128-TQFP

Datasheet:: MEC1414-I/NU.pdf

Description:: MEC, MIPS CORE, 128K SRAM, LPC &

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MEC1414-I/NU from Microchip Technology is a 32-bit embedded controller IC designed for notebook and tablet platform power management and I/O control. It integrates a MIPS32 M14K™ core, 128 kB SRAM (code + data), LPC and eSPI host interfaces, 106 GPIOs, and supports ACPI 3.0, Connected Standby, and secure boot with AES-128 encryption - deployed in system firmware for EC-based thermal, battery, and keyboard subsystem coordination.

For engineers reviewing the MEC1414-I/NU datasheet, MEC1414-I/NU pinout, MEC1414-I/NU application, or MEC1414-I/NU equivalent, key selection criteria include eSPI/LPC dual-host interface flexibility, VBAT-powered real-time timers (RTOS/Hibernation/Week), integrated SMBus/PS/2/UART peripherals, and 32 kHz crystal-supported low-power sleep state retention.

Technical Context

The MEC1414-I/NU implements a tightly coupled MIPS32 M14K™ microcontroller core with microMIPS instruction set support, programmable clock frequencies (48/12/3/1 MHz), and deep-sleep debug capability via 2-wire ICSP and Trace FIFO Debug Port (TFDP). Its interrupt architecture includes a vectored controller with maskable wake-up events and per-status-bit vector generation.

Host communication is handled through dual-mode configurable interfaces: Intel eSPI-compliant (Peripheral/VW/OOB/Flash channels) and LPC 1.1-compatible (with CLKRUN#, SERIRQ, SMI#, EC_SCI# support), both operating at 19.2–33 MHz bus speeds and sharing pin resources with GPIOs on the 128-VTQFP package.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	MIPS32 M14K™ with microMIPS compatibility and hardware multiply/divide unit
SRAM Capacity	128 kB total (code + data), plus 64 B battery-backed SRAM for persistent state
Host Interfaces	LPC 1.1 and Intel eSPI v1.0 compliant; pin-multiplexed, firmware-configurable at boot
Real-Time Timers	RTOS Timer (32 kHz, runs in all sleep states), Hibernation Timer (0.5 ms–128 min wakeup), Week Timer (1 s–8.5 yr alarm)
Power Management	ACPI 3.0 & PC2001 compliant; VTR/VBAT dual standby planes; <10 µA sleep current typical
Secure Boot	ROM loader supporting 4 flash images, CRC-32 validation, and AES-128 encrypted firmware loading
Peripherals	3x SMBus 2.0 controllers, 2x PS/2 ports, 8x PWM outputs, 2x tachometer inputs, 8x ADC channels (10-bit, 10 µs), 2x DACs (8-bit)

Pinout & Package

MEC1414-I/NU is housed in a 128-pin VTQFP (14 × 14 mm, 0.4 mm pitch), RoHS-compliant package with exposed thermal pad. Pin functions are dynamically configurable via firmware-controlled GPIO registers; primary interface pins (eSPI/LPC) share physical terminals with general-purpose I/O.

Pin/Terminal	Circuit Role	Design Meaning
GPIO034	eSPI_CLK / PCI_CLK	Configurable as eSPI clock input or LPC PCI clock; requires firmware ALT FUNC2 or FUNC1 setting
GPIO040–043	eSPI_IO0–IO3 / LAD0–LAD3	Quad bidirectional data lines shared between eSPI and LPC; mode selected at boot via pin control register
GPIO044	eSPI_CS# / LFRAME_N	Chip select (eSPI) or frame signal (LPC); active-low, critical for host interface initialization sequence
GPIO061	eSPI_RESET# / LPC_PD#	Resets eSPI peripheral or asserts LPC power-down; not electrically compatible across modes
GPIO063	eSPI_ALERT# / SERIRQ	Interrupt request signaling: eSPI alert or LPC serial IRQ; routed to PCH via dedicated trace
VTR_33_18	Standby Power Supply	Selectable 3.3 V or 1.8 V rail; enables 10 GPIOs to operate at lower voltage when using eSPI/I2C host interface

Key Features

Feature	Design Value
Secure Firmware Loading	AES-128 decryption and CRC-32 validation of SPI flash images during boot, enabling trusted execution and crisis recovery over keyboard scan pins
Multi-Mode Host Interface	Firmware-selectable LPC or eSPI operation on shared pins - eliminates need for board-level interface redesign across platform generations
Battery-Powered Timing	RTOS, Hibernation, and Week Timers all driven by 32 kHz source and retain counting during VCC power loss - enables accurate wake scheduling without host involvement
Integrated Power Fail Detection	Dedicated hardware register reports VCC power-good status and triggers immediate firmware response to brown-out or shutdown events
Debug in Deep Sleep	2-wire ICSP and TFDP maintain full visibility into CPU state and memory even during heavy/deep sleep - no wake required for breakpoint inspection

Applications

Thermal Management System	Battery Health Monitoring
Use Scenario: Real-time fan speed control and thermistor-based temperature sampling in ultrabook chassis. IC Role / Device Role / Timing Role: Embedded controller executing closed-loop PWM regulation using 8-channel ADC inputs and 8x PWM outputs, synchronized to RTOS Timer for consistent 100 ms sampling intervals. Use Value: Enables precise thermal throttling without OS intervention, reducing latency by >15 ms versus host-driven polling and maintaining sub-1°C sensor accuracy across S0–S5 states.	Use Scenario: Accurate battery charge/discharge cycle logging and state-of-charge estimation in detachable tablets. IC Role / Device Role / Timing Role: BGPO and VCI interfaces monitor battery pack presence and charger status; Week Timer maintains calendar-corrected charge history in 64 B VBAT-SRAM across full power cycles. Use Value: Preserves battery analytics across cold reboots and multi-week storage, eliminating reliance on host OS timekeeping and preventing SOC drift beyond ±0.5% per month.
Keyboard & Touchpad Subsystem	Connected Standby Power Orchestration
Use Scenario: Low-latency matrix scanning and PS/2 translation for keyboard and touchpad in clamshell notebooks. IC Role / Device Role / Timing Role: Dedicated 18×8 keyboard scan controller with PreDrive Mode; dual PS/2 controllers handle independent keyboard/mouse protocols while remaining active in S3/S4 suspend. Use Value: Achieves <20 ms keypress-to-interrupt latency and supports edge-triggered wake from PS/2 activity - meeting Intel's CS requirements for instant-resume UX.	Use Scenario: Coordinating platform-wide low-power transitions during Windows Connected Standby (S0ix). IC Role / Device Role / Timing Role: ACPI-ECI and PM1 block interfaces manage RSMRST# assertion, SCI event generation, and VTR/VBAT power plane sequencing under firmware control. Use Value: Reduces S0ix exit latency to <50 ms and ensures reliable wake from USB/keyboard events without PCH assistance - critical for sub-2W idle power targets.

Thermal Management System

Battery Health Monitoring

Use Scenario: Real-time fan speed control and thermistor-based temperature sampling in ultrabook chassis.

IC Role / Device Role / Timing Role: Embedded controller executing closed-loop PWM regulation using 8-channel ADC inputs and 8x PWM outputs, synchronized to RTOS Timer for consistent 100 ms sampling intervals.

Use Value: Enables precise thermal throttling without OS intervention, reducing latency by >15 ms versus host-driven polling and maintaining sub-1°C sensor accuracy across S0–S5 states.

Use Scenario: Accurate battery charge/discharge cycle logging and state-of-charge estimation in detachable tablets.

IC Role / Device Role / Timing Role: BGPO and VCI interfaces monitor battery pack presence and charger status; Week Timer maintains calendar-corrected charge history in 64 B VBAT-SRAM across full power cycles.

Use Value: Preserves battery analytics across cold reboots and multi-week storage, eliminating reliance on host OS timekeeping and preventing SOC drift beyond ±0.5% per month.

Keyboard & Touchpad Subsystem

Connected Standby Power Orchestration

Use Scenario: Low-latency matrix scanning and PS/2 translation for keyboard and touchpad in clamshell notebooks.

IC Role / Device Role / Timing Role: Dedicated 18×8 keyboard scan controller with PreDrive Mode; dual PS/2 controllers handle independent keyboard/mouse protocols while remaining active in S3/S4 suspend.

Use Value: Achieves <20 ms keypress-to-interrupt latency and supports edge-triggered wake from PS/2 activity - meeting Intel's CS requirements for instant-resume UX.

Use Scenario: Coordinating platform-wide low-power transitions during Windows Connected Standby (S0ix).

IC Role / Device Role / Timing Role: ACPI-ECI and PM1 block interfaces manage RSMRST# assertion, SCI event generation, and VTR/VBAT power plane sequencing under firmware control.

Use Value: Reduces S0ix exit latency to <50 ms and ensures reliable wake from USB/keyboard events without PCH assistance - critical for sub-2W idle power targets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MEC1414-NU	Same silicon, industrial-grade (-40°C to +85°C) vs. extended industrial (-40°C to +105°C) for MEC1414-I/NU; identical pinout, firmware, and feature set	Targeting commercial notebooks instead of ruggedized 2-in-1s or automotive-adjacent tablets requiring higher thermal margin	Select MEC1414-I/NU when operating ambient exceeds 85°C or sustained junction temperature must remain below 125°C under full peripheral load.
MEC1416-I/NU	Same package and temperature grade, but 160 kB SRAM (vs. 128 kB) and additional eSPI channel support; pin-compatible with shared footprint	Suitable for platforms adding BIOS-level diagnostics, larger firmware stacks, or dual eSPI peripheral channel requirements (e.g., separate flash + out-of-band)	Choose MEC1416-I/NU only if firmware size exceeds 120 kB or eSPI OOB channel usage is confirmed - no benefit for standard LPC/eSPI dual-mode designs.

Compared with MEC1414-NU, the MEC1414-I/NU offers extended thermal reliability without firmware or layout changes, while MEC1416-I/NU provides scalable memory and eSPI bandwidth - making MEC1414-I/NU optimal for thermally constrained, cost-sensitive Connected Standby platforms where 128 kB SRAM suffices.

Availability

MEC1414-I/NU is available at Aetrix Electronics and suitable for notebook thermal management, battery health monitoring, keyboard subsystem control, and Connected Standby power orchestration requiring stable component supply across long-life industrial and consumer programs.

Supply support for MEC1414-I/NU 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 company specializing in microcontrollers, analog devices, and security solutions for embedded systems.

The MEC140x/1x product line delivers highly configurable, mixed-signal embedded controllers optimized for PC-class power management, I/O consolidation, and firmware-defined system control in notebooks and tablets.

FAQ

What host interface modes does the MEC1414-I/NU support, and how are they configured?

The MEC1414-I/NU supports LPC 1.1 and Intel eSPI v1.0 host interfaces, both implemented on shared GPIO pins. Configuration occurs at boot via firmware writing to GPIO Pin Control Registers (e.g., 0x1000 for LPC, 0x2000 for eSPI) and activating the corresponding interface block. The MEC1414-I/NU does not support I2C as a host interface - that option is limited to MEC140x-SZ variants per the DS00001956E product table.

Does the MEC1414-I/NU include battery-backed memory, and what is its purpose?

Yes, the MEC1414-I/NU integrates 64 bytes of VBAT-powered SRAM. This memory retains critical state - such as RTC calendar data, Week Timer alarms, and firmware configuration flags - during complete system power loss. It operates independently of VCC and remains functional as long as VBAT is present, enabling accurate wake scheduling and persistent device identity across cold boots.

How does the MEC1414-I/NU implement secure boot, and what encryption standards are supported?

The MEC1414-I/NU uses a ROM-based Secure Boot Loader that validates and decrypts firmware images from external SPI flash. It supports CRC-32 integrity checking and AES-128 symmetric encryption for image confidentiality. The loader permits up to four code images in shared flash and enables crisis recovery via keyboard matrix scan pins - ensuring authenticated, tamper-resistant firmware execution from power-on reset.

What real-time timer capabilities does the MEC1414-I/NU provide for low-power system wake events?

The MEC1414-I/NU provides three independent 32 kHz–driven timers: the RTOS Timer (continues counting in all sleep states), Hibernation Timer (programmable 0.5 ms–128 min wake interval), and Week Timer (calendar-aware alarms from 1 second to 8.5 years). All timers generate wake-capable interrupts and halt only when the EC core is halted (e.g., during JTAG debug), ensuring deterministic low-power scheduling.

Is the MEC1414-I/NU pin-compatible with other members of the MEC140x/1x family, and which variants share the same 128-VTQFP package?

Yes, the MEC1414-I/NU is pin-compatible with all 128-VTQFP variants in the MEC140x/1x family, including MEC1404-NU, MEC1406-NU, MEC1408-NU, MEC1414-NU, MEC1416-NU, and MEC1418-NU. Differences are limited to firmware-configurable features (eSPI support), SRAM size (128/160/192 kB), and temperature grade - no PCB redesign is needed when upgrading within the 128-VTQFP footprint.

MEC1414-I/NU Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 128-TQFP

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Applications:: Keyboard and Embedded Controller

Core Processor:: MIPS32® M14K™

Program Memory Type:: External Program Memory

Controller Series:: -

RAM Size:: 128K x 8

Interface:: I2C, LPC, SMBus, SPI, UART

Number of I/O:: 106

Voltage - Supply:: 1.71V ~ 3.465V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 128-VTQFP (14x14)

MEC1414-I/NU FAQ

1.How can I place an order for MEC1414-I/NU through Aetrix?

Please submit a Request for Quotation (RFQ) for MEC1414-I/NU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MEC1414-I/NU reliable?

The price and inventory of MEC1414-I/NU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEC1414-I/NU is usually 5 days.

3.What payment methods are accepted for MEC1414-I/NU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEC1414-I/NU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MEC1414-I/NU?

MEC1414-I/NU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MEC1414-I/NU order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MEC1414-I/NU?

For technical support, including MEC1414-I/NU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEC1414-I/NU requirements.

6.How does Aetrix verify that MEC1414-I/NU is sourced from the original manufacturer or authorized distributors?

All MEC1414-I/NU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MEC1414-I/NU meets industry standards.

7.What is the process for return or replacement of MEC1414-I/NU?

All MEC1414-I/NU units undergo pre-shipment inspection (PSI). If there is an issue with MEC1414-I/NU, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MEC1414-I/NU part is unused and in its original packaging.

Return procedure for MEC1414-I/NU:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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