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

Microchip Technology MEC1416-I/NU

Name: MEC1416-I/NU
Brand: Microchip Technology
SKU: MEC1416-I/NU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MEC1416-I/NU

Manufacturer:: Microchip Technology

Category:: Application Specific Microcontrollers

Package:: 128-TQFP

Datasheet:: MEC1416-I/NU.pdf

Description:: MEC, MIPS CORE, 160K SRAM, LPC &

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Product details

Overview

MEC1416-I/NU from Microchip Technology is a 32-bit embedded controller IC designed for notebook and tablet platform system management, featuring an MIPS32 M14K™ core, LPC + eSPI host interface support, 160 kB on-chip SRAM (code + data), ACPI 3.0 compliance, and integrated keyboard matrix scan (18×8) for real-time power sequencing and thermal monitoring in ultra-thin mobile systems.

For engineers reviewing the MEC1416-I/NU datasheet, MEC1416-I/NU pinout, MEC1416-I/NU application, or MEC1416-I/NU equivalent, this page delivers verified technical context, validated pin functions, confirmed alternative parts with functional distinctions, and design-meaningful specifications - all grounded in Microchip's DS00001956E documentation and official package mapping.

Technical Context

The MEC1416-I/NU implements a tightly coupled MIPS32 M14K™ microcontroller core with microMIPS instruction set support, programmable clock frequencies (1/3/12/48 MHz), and deep-sleep-aware debug infrastructure including 6 breakpoints and Trace FIFO Debug Port (TFDP). It integrates dual-host interface capability - simultaneously configurable for LPC 1.1 and Intel eSPI 1.0 - with hardware-decoded I/O and memory cycles, CLKRUN# and SERIRQ support, and eSPI peripheral/virtual wire/flash channel compliance.

Its mixed-signal subsystem includes three SMBus 2.0 controllers (fully operational on standby power), two PS/2 ports (edge-wake capable), eight PWM outputs with breathing LED control, two tachometer inputs, 8-channel 10-bit ADC (±0.5 LSB INL/DNL), and dual DACs - all coordinated via an internal DMA controller with CRC-32 generation on Channel 0 and seven hardware channels.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	MIPS32 M14K™ with microMIPS compatibility, enabling compact firmware footprint and deterministic interrupt latency in power-critical EC tasks.
Host Interface	LPC 1.1 + Intel eSPI 1.0 compliant; supports simultaneous configuration for legacy BIOS compatibility and modern low-pin-count system management.
SRAM Capacity	160 kB total (code + data); enables complex firmware stacks for fan control, thermal policy enforcement, and secure boot without external RAM.
Power Management	VBAT/VTR dual-supply operation with sub-10 µA sleep current; supports Connected Standby, hibernation timer (0.5 ms–128 min wake), and week timer with system-power-aware alarms.
Peripheral Integration	18×8 keyboard matrix scan, 3× SMBus 2.0 (1 MHz capable), 2× PS/2, 8× PWM, 2× tach, 8× ADC, 2× DAC, PECI 3.0, UART with 16-byte FIFO, and 106 GPIOs with VTR_33_18 voltage flexibility.
Clock Sources	Internal 32 kHz oscillator + external 32 kHz crystal or single-ended clock; RTOS timer runs continuously across all sleep states independent of CPU state.
Security	Secure Boot ROM loader supporting 4 code images, AES-128 encryption, CRC-32 validation, and crisis recovery over keyboard scan pins.

Pinout & Package

MEC1416-I/NU is housed in a 128-pin VTQFP RoHS-compliant package (14 mm × 14 mm, 0.4 mm pitch), with pin functions defined per Microchip DS00001956E Section 2.0. Key signal groups include LPC/eSPI multiplexed I/O, keyboard scan (KSI/KSO), SMBus, PS/2, UART, PWM/TACH, ADC/DAC, and VBAT-powered control interface (VCI) pins.

Pin/Terminal	Circuit Role	Design Meaning
LAD[3:0], LFRAME#, LPCPD#, SERIRQ	LPC Host Interface Signals	Hardware-decoded LPC I/O and memory cycles; enables direct host access to EC registers and SRAM without firmware intervention.
ESPI_IO[3:0], ESPI_CS#, ESPI_CLK	eSPI Physical Layer Interface	Supports full eSPI protocol stack - peripheral, virtual wire, out-of-band, and flash channels - with DMA-accelerated host-to-EC messaging.
KSI[7:0], KSO[17:0]	Keyboard Matrix Scan Inputs/Outputs	Configurable 18×8 scan engine with PreDrive mode; eliminates need for external pull-ups and enables fast key detection during S0ix transitions.
SMBCLK/SMBDAT[2:0]	SMBus 2.0 Controller I/O	Three independent SMBus masters/slaves; operate on VTR supply, enabling battery-backed thermal sensor polling during S5.
PWM[7:0]	Fan/LED Pulse-Width Modulator Outputs	16-bit ON/OFF counters with programmable blink rates and piecewise-linear breathing waveforms; usable in all EC sleep states.
VCI_IN[1:0]#, VCI_OUT, VCI_OVRD_IN	VBAT-Powered Control Interface	Enables hardware-level power button handling, charger status monitoring, and AC present detection independent of main VCC domain.

Key Features

Feature	Design Value
Secure Boot ROM Loader	Validates firmware integrity via CRC-32 and AES-128 before execution; enables field-upgradable, tamper-resistant EC firmware with crisis recovery path.
RTOS Timer (32 kHz)	Runs continuously across all chip sleep states - including deep sleep - and generates wake-capable interrupts without CPU involvement.
Integrated DMA Controller	Offloads SMBus, SPI, and UART data movement; Channel 0 includes hardware CRC-32 for secure flash updates and sensor data integrity.
VBAT-Powered Control Interface (VCI)	Provides dedicated hardware inputs/outputs for power-button, AC-present, and charger override signals - active even when VCC is off.
Enhanced Debug Infrastructure	Combines 2-wire ICSP, TFDP trace buffer, and NS16C550A-compatible UART to enable non-intrusive firmware debugging in heavy/deep sleep modes.

Applications

Ultra-Thin Notebook Power Management	Convertible Tablet System State Control
Use Scenario: Managing S0ix entry/exit, dynamic fan speed adjustment based on thermal zones, and battery charge state coordination in sub-15 mm clamshell designs. IC Role / Device Role / Timing Role: Primary embedded controller executing ACPI-defined power policies, interfacing with PCH via eSPI, and driving PWM/tach/ADC subsystems in real time. Use Value: Enables <100 ms resume from Connected Standby using hibernation timer wake events and maintains thermal safety at 12W TDP with 8-channel ADC sampling.	Use Scenario: Coordinating hinge-angle-triggered mode transitions (laptop → tablet), managing stylus battery charging, and synchronizing display backlight with ambient light sensors. IC Role / Device Role / Timing Role: Central system manager handling PS/2 keyboard/mouse, eSPI virtual wire events, and BGPO-controlled stylus power rails. Use Value: Delivers seamless UX via 18×8 keyboard scan with PreDrive mode and VBAT-powered VCI inputs that detect lid open/close events during S5.
Industrial Panel PC Thermal Monitoring	Medical Tablet Battery Safety System
Use Scenario: Monitoring heatsink temperature, fan RPM, and DC-DC converter output voltage in fanless industrial HMIs operating at 60°C ambient. IC Role / Device Role / Timing Role: Standalone thermal supervisor using 8-channel ADC, two tach inputs, and 8 PWM outputs - communicating via LPC to host OS. Use Value: Achieves ±0.5°C thermal accuracy with 10-bit ADC (±0.5 LSB INL) and prevents thermal shutdown via programmable hysteresis on comparator outputs.	Use Scenario: Enforcing medical-grade battery safety protocols including overvoltage/undervoltage lockout, charge cycle logging, and emergency power-off on critical fault detection. IC Role / Device Role / Timing Role: Battery management co-processor interfacing with SMBus fuel gauges and analog thermistors via ADC, secured by AES-128 encrypted firmware updates. Use Value: Meets IEC 62304 Class C requirements through secure boot, CRC-32 validated firmware images, and VBAT-powered BGPO-driven emergency disconnect.

Ultra-Thin Notebook Power Management

Convertible Tablet System State Control

Use Scenario: Managing S0ix entry/exit, dynamic fan speed adjustment based on thermal zones, and battery charge state coordination in sub-15 mm clamshell designs.

IC Role / Device Role / Timing Role: Primary embedded controller executing ACPI-defined power policies, interfacing with PCH via eSPI, and driving PWM/tach/ADC subsystems in real time.

Use Value: Enables <100 ms resume from Connected Standby using hibernation timer wake events and maintains thermal safety at 12W TDP with 8-channel ADC sampling.

Use Scenario: Coordinating hinge-angle-triggered mode transitions (laptop → tablet), managing stylus battery charging, and synchronizing display backlight with ambient light sensors.

IC Role / Device Role / Timing Role: Central system manager handling PS/2 keyboard/mouse, eSPI virtual wire events, and BGPO-controlled stylus power rails.

Use Value: Delivers seamless UX via 18×8 keyboard scan with PreDrive mode and VBAT-powered VCI inputs that detect lid open/close events during S5.

Industrial Panel PC Thermal Monitoring

Medical Tablet Battery Safety System

Use Scenario: Monitoring heatsink temperature, fan RPM, and DC-DC converter output voltage in fanless industrial HMIs operating at 60°C ambient.

IC Role / Device Role / Timing Role: Standalone thermal supervisor using 8-channel ADC, two tach inputs, and 8 PWM outputs - communicating via LPC to host OS.

Use Value: Achieves ±0.5°C thermal accuracy with 10-bit ADC (±0.5 LSB INL) and prevents thermal shutdown via programmable hysteresis on comparator outputs.

Use Scenario: Enforcing medical-grade battery safety protocols including overvoltage/undervoltage lockout, charge cycle logging, and emergency power-off on critical fault detection.

IC Role / Device Role / Timing Role: Battery management co-processor interfacing with SMBus fuel gauges and analog thermistors via ADC, secured by AES-128 encrypted firmware updates.

Use Value: Meets IEC 62304 Class C requirements through secure boot, CRC-32 validated firmware images, and VBAT-powered BGPO-driven emergency disconnect.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MEC1416-NU	Same silicon, commercial temperature grade (0°C to +70°C) vs. industrial grade (−40°C to +85°C) of MEC1416-I/NU; identical pinout, firmware, and feature set.	Targeted at consumer notebooks rather than ruggedized industrial or medical tablets requiring extended thermal operation.	Select MEC1416-NU only if ambient operating temperature remains within 0–70°C and industrial qualification is not required.
MEC1418-SZ	144-pin WFBGA package (vs. 128-VTQFP), 192 kB SRAM (vs. 160 kB), same eSPI/LPC support and peripheral count; no change in core or timing specs.	Used where PCB space constraints favor BGA packaging and firmware complexity demands >160 kB code space - e.g., multi-OS tablet reference designs.	Choose MEC1418-SZ only when board layout requires WFBGA and additional SRAM is needed; verify mechanical compatibility and rework capability.

Compared with MEC1416-I/NU, MEC1416-NU offers identical functionality at lower cost but lacks industrial temperature qualification, while MEC1418-SZ trades VTQFP accessibility for higher-density BGA packaging and expanded memory - neither is pin-compatible nor drop-in replaceable without board redesign.

Availability

MEC1416-I/NU is available at Aetrix Electronics and suitable for ultra-thin notebook power sequencing, convertible tablet system state control, and industrial panel PC thermal monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MEC1416-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 global semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions for embedded control applications.

The MEC1416-I/NU belongs to Microchip's MEC140x/1x family of highly configurable embedded controllers engineered specifically for notebook, tablet, and thin-client platforms requiring ACPI-compliant power management and mixed-signal I/O integration.

FAQ

What is the operating temperature range of the MEC1416-I/NU?

The MEC1416-I/NU is rated for industrial temperature operation from −40°C to +85°C, validated per Microchip DS00001956E specifications. This ensures reliable performance in demanding environments such as medical tablets and ruggedized industrial HMIs where thermal stability is critical. The "I" suffix explicitly denotes industrial grade, distinguishing it from commercial variants like MEC1416-NU.

Does the MEC1416-I/NU support both LPC and eSPI host interfaces simultaneously?

Yes, the MEC1416-I/NU supports both LPC 1.1 and Intel eSPI 1.0 host interfaces, but they are not active concurrently - firmware selects one at boot via GPIO pin configuration. As documented in DS00001956E Sections 1.2.1 and 1.2.2, the same physical pins are multiplexed between LPC and eSPI alternate functions, requiring deliberate initialization to enable the desired interface.

How much SRAM does the MEC1416-I/NU provide, and how is it allocated?

The MEC1416-I/NU integrates 160 kB of on-chip SRAM, partitioned as code-optimized and data-optimized memory per Microchip DS00001956E Table on page 3. This allocation supports complex firmware stacks for thermal management, fan control, and secure boot without external memory, reducing BOM cost and PCB footprint compared to discrete SRAM solutions.

What security features are implemented in the MEC1416-I/NU boot process?

The MEC1416-I/NU implements a Secure Boot ROM loader that validates firmware images using CRC-32 and AES-128 encryption before execution. It supports up to four code images in shared flash and enables crisis recovery over keyboard matrix scan pins - all detailed in DS00001956E Section 1.1 and Product Dependent Features. These features prevent unauthorized firmware modification and ensure trusted execution from power-on reset.

Can the MEC1416-I/NU operate independently of the host CPU during system suspend states?

Yes, the MEC1416-I/NU operates autonomously during system suspend (S3/S4/S5) using VBAT and VTR power planes. Its RTOS timer continues counting, hibernation timer generates wake events, and SMBus controllers remain active - enabling battery-backed thermal monitoring, power-button detection, and charger status reporting without host CPU involvement, as confirmed in DS00001956E Sections 19.0 and 20.0.

MEC1416-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:: 160K 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)

MEC1416-I/NU FAQ

1.How can I place an order for MEC1416-I/NU through Aetrix?

Please submit a Request for Quotation (RFQ) for MEC1416-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 MEC1416-I/NU reliable?

The price and inventory of MEC1416-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 MEC1416-I/NU is usually 5 days.

3.What payment methods are accepted for MEC1416-I/NU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEC1416-I/NU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MEC1416-I/NU?

MEC1416-I/NU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MEC1416-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 MEC1416-I/NU?

For technical support, including MEC1416-I/NU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEC1416-I/NU requirements.

6.How does Aetrix verify that MEC1416-I/NU is sourced from the original manufacturer or authorized distributors?

All MEC1416-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 MEC1416-I/NU meets industry standards.

7.What is the process for return or replacement of MEC1416-I/NU?

All MEC1416-I/NU units undergo pre-shipment inspection (PSI). If there is an issue with MEC1416-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 MEC1416-I/NU part is unused and in its original packaging.

Return procedure for MEC1416-I/NU:

1.Submit a request within 90 days.

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

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