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Microchip Technology MEC1414-NU
- Part No.:
- MEC1414-NU
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 128-TQFP
- Datasheet:
-
MEC1414-NU.pdf
- Description:
- MEC, MIPS CORE, 128K SRAM, LPC &
- Quantity:
- Payment:
- Shipping:
Inventory:714
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Product details
Overview
MEC1414-NU from Microchip Technology is a 32-bit embedded controller IC designed for notebook and tablet platform system management, integrating an MIPS32 M14K™ core, LPC + eSPI host interfaces, 128 kB SRAM (code + data), 106 GPIOs, and full ACPI 3.0/PC2001 compliance for power-aware firmware execution in S0–S5 states.
For engineers reviewing the MEC1414-NU datasheet, MEC1414-NU pinout, MEC1414-NU application, or MEC1414-NU equivalent, this page delivers verified technical context on eSPI/LPC dual-host operation, battery-backed RTC/week timer, secure boot ROM loader with AES-128, and integrated PS/2/SMBus/UART peripherals - all critical for EC firmware development and platform power architecture validation.
Technical Context
The MEC1414-NU implements a microMIPS-compatible MIPS32 M14K™ core with programmable clock frequencies (1/3/12/48 MHz), hardware debug support (ICSP, TFDP, 6 breakpoints), and deep-sleep wake capability via VTR/VBAT power planes. It integrates a vectored interrupt controller supporting maskable wake events and legacy aggregated mode.
Its dual-host interface supports either LPC 1.1 (19.2–33 MHz bus) or Intel eSPI (Peripheral/VW/OOB/Flash channels), with configuration determined at firmware load time. The device includes three SMBus 2.0 controllers (fully operational on standby power), two PS/2 ports, and a dedicated crisis-recovery SPI interface on keyboard scan pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | MIPS32 M14K™ with microMIPS instruction set, enabling compact firmware code density and deterministic real-time response. |
| Host Interfaces | LPC 1.1 and Intel eSPI compliant - firmware-selectable at boot; enables migration from legacy LPC to modern eSPI without hardware change. |
| SRAM Capacity | 128 kB total (code + data), tightly coupled to CPU for low-latency firmware execution and interrupt handling. |
| Power Planes | Dual suspend supplies: VTR (standby) and VBAT (battery-backed); supports Connected Standby and instant-on resume. |
| Real-Time Clock | 32-bit RTOS Timer driven by 32.768 kHz source, continues counting in all sleep states except JTAG-halted EC. |
| Secure Boot | ROM-based loader supporting CRC-32 and AES-128 encrypted firmware images from shared SPI Flash. |
| GPIO Count | 106 general-purpose I/O pins with edge-triggered wake, programmable pull-up/down, and power-well emulation. |
Pinout & Package
MEC1414-NU is housed in a 128-pin VTQFP RoHS-compliant package (14 × 14 mm, 0.4 mm pitch), with pin functions configurable via firmware-controlled GPIO registers. Key dedicated signals include LPC/eSPI bus lines, PS/2 clock/data, UART TX/RX, SMBus SCL/SDA, and VCI control inputs/outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LAD[0:3], LFRAME#, LPCPD# | LPC Host Interface Signals | Configurable as LPC data/address bus and control lines; default to GPIO after VTR POR until firmware configures ALT FUNC1. |
| ESPI_IO[0:3], ESPI_CS#, ESPI_CLK | eSPI Host Interface Signals | Support full eSPI protocol stack; mapped to GPIO pins 40–44 and 34; require ALT FUNC2 configuration in firmware. |
| KSI[0:17], KSO[0:7] | Keyboard Matrix Scan Interface | 18×8 matrix support; internal pull-ups usable only when PreDrive Mode enabled per Section 30.10.2 of datasheet. |
| VCI_IN[0:1]#, VCI_OUT, VCI_OVRD_IN | VBAT-Powered Control Interface | Enables wake-from-suspend via external power-button or charger status; latching/filtering configurable in VCI register bank. |
| SYSPWR_PRES, BGPO | System Power Presence & Battery-GPO | Direct monitoring of main power rail; BGPO remains functional during VBAT-only operation for low-power status signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Secure Firmware Loading | AES-128 encrypted image loading from shared SPI Flash with CRC-32 verification ensures tamper-resistant boot integrity. |
| Connected Standby Support | Full peripheral retention (SMBus, PS/2, GPIO wake) and 32kHz RTOS timer operation during S0ix states enable Windows Modern Standby compliance. |
| Week Timer with Sub-Second Alarm | Generates wake events from 0.5 seconds to 8.5 years; alarm valid only when SYSPWR_PRES is asserted - prevents spurious wake during battery-only operation. |
| Hardware DMA Network | 7-channel DMA controller with CRC-32 on Channel 0 accelerates SMBus/UART/SPI transfers and offloads CPU during high-throughput sensor or debug logging. |
| Triple-Interface Debug | Simultaneous access via ICSP (JTAG), TFDP (trace FIFO), and UART (NS16C550A-compatible) enables production debug, real-time trace, and BIOS-level diagnostics. |
Applications
| Smart Notebook Power Management | Windows Connected Standby Platform |
|---|---|
Use Scenario: Managing S0ix entry/exit, thermal throttling, battery charge state, and lid-open detection in ultrabook designs. IC Role / Device Role / Timing Role: Primary embedded controller executing ACPI-compliant firmware; provides real-time 32kHz RTOS timer and hibernation timer for precise wake scheduling. Use Value: Enables sub-100ms resume latency and <5 µA S5 current draw using VBAT/VTR power isolation and firmware-controlled peripheral gating. | Use Scenario: Maintaining network connectivity and background task execution while appearing "off" to user in Windows 10/11 Modern Standby. IC Role / Device Role / Timing Role: System-level power arbiter interfacing with PCH via eSPI; handles SERIRQ, SMI#, and EC_SCI# event routing during low-power residency. Use Value: Delivers continuous SMBus sensor polling and PS/2 keyboard wake without waking CPU core - validated per Intel eSPI v1.2 and PC2001 requirements. |
| Industrial Tablet System Controller | Multi-Function Peripheral Hub |
Use Scenario: Controlling display backlight, fan speed, battery fuel gauge, and USB-C port power delivery in ruggedized tablets. IC Role / Device Role / Timing Role: Mixed-signal I/O hub with 8-channel 10-bit ADC, 2-channel 8-bit DAC, and 8 PWM outputs - all operable from VTR supply. Use Value: Eliminates need for discrete analog front-end ICs; ADC achieves ±0.5 LSB INL/DNL for accurate thermistor-based thermal monitoring. | Use Scenario: Aggregating PS/2 keyboard/mouse, SMBus temperature sensors, UART debug console, and LED indicators in space-constrained mobile platforms. IC Role / Device Role / Timing Role: Consolidated peripheral interface controller with 3x SMBus masters, 2x PS/2 ports, full-duplex UART, and 3x breathing LED controllers. Use Value: Reduces BOM count by 7+ components; breathing LED controller operates in EC sleep states to maintain UI feedback without CPU involvement. |
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 | 160 kB SRAM (vs. 128 kB), identical pinout and feature set including eSPI/LPC dual-host support. | Suitable for firmware with larger code footprint or extended driver stacks requiring additional RAM. | Select MEC1416-NU when firmware size exceeds 128 kB allocation or when future-proofing for feature expansion. |
| MEC1404-NU | LPC-only host interface (no eSPI), same 128 kB SRAM and 106 GPIO count; shares 128-VTQFP package. | Targeted at cost-sensitive legacy platforms where eSPI migration is not required. | Choose MEC1404-NU only if eSPI functionality is unnecessary and LPC-only compatibility suffices for host communication. |
Compared with MEC1414-NU, MEC1416-NU offers headroom for larger firmware images without changing layout, while MEC1404-NU removes eSPI complexity but sacrifices forward compatibility with next-gen chipset interfaces.
Availability
MEC1414-NU is available at Aetrix Electronics and suitable for notebook platform design, Windows Modern Standby implementation, and industrial tablet system management requiring stable component supply across long-life production cycles.
Supply support for MEC1414-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 security ICs, with leadership in embedded control and power management solutions.
The MEC140x/1x product line delivers highly configurable, mixed-signal embedded controllers optimized for PC-class power management, ACPI-compliant firmware execution, and seamless integration into Intel/AMD platform reference designs.
FAQ
What host interface protocols does the MEC1414-NU support?
The MEC1414-NU supports both LPC 1.1 and Intel eSPI host interfaces - firmware-selectable at boot time. It does not support I2C as a host interface in this variant. Configuration requires setting GPIO pin control registers to ALT FUNC1 (LPC) or ALT FUNC2 (eSPI) before activating the respective block, as documented in Sections 1.2.1 and 1.2.2 of DS00001956E.
Does the MEC1414-NU include battery-backed memory?
Yes, the MEC1414-NU includes 64 bytes of battery-powered SRAM accessible via the VBAT register bank. This memory retains data during S5 and G3 states when only VBAT is present, and is used for RTC context, week timer state, and critical power-event flags - independent of main VCC or VTR supply.
How many SMBus controllers does the MEC1414-NU integrate?
The MEC1414-NU integrates up to three SMBus 2.0 host controllers, all fully operational on standby power (VTR). Each supports clock stretching, multi-master arbitration, and programmable bus speeds up to 1 MHz. They are multiplexed across GPIO pins and require firmware configuration of SMBus control registers and pinmux settings per Section 23.0 of the datasheet.
What is the maximum resolution and accuracy of the MEC1414-NU's ADC?
The MEC1414-NU features an 8-channel, 10-bit ADC with integral non-linearity (INL) of ±0.5 LSB and differential non-linearity (DNL) of ±0.5 LSB. Conversion time is 10 µs per sample, and it supports external analog voltage reference input for improved precision in thermistor or power-rail monitoring applications.
Can the MEC1414-NU generate wake events from deep sleep states?
Yes, the MEC1414-NU supports wake from all chip sleep states (including deep sleep) via multiple sources: GPIO edge detection, VCI inputs, week timer alarms, RTC interrupts, PS/2 activity, and SMBus address match. Wake-capable peripherals remain powered from VTR or VBAT, and the vectored interrupt controller routes events without CPU intervention.
MEC1414-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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 128-VTQFP (14x14)
MEC1414-NU FAQ
1.How can I place an order for MEC1414-NU through Aetrix?
Please submit a Request for Quotation (RFQ) for MEC1414-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-NU reliable?
The price and inventory of MEC1414-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-NU is usually 5 days.
3.What payment methods are accepted for MEC1414-NU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEC1414-NU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEC1414-NU?
MEC1414-NU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEC1414-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-NU?
For technical support, including MEC1414-NU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEC1414-NU requirements.
6.How does Aetrix verify that MEC1414-NU is sourced from the original manufacturer or authorized distributors?
All MEC1414-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-NU meets industry standards.
7.What is the process for return or replacement of MEC1414-NU?
All MEC1414-NU units undergo pre-shipment inspection (PSI). If there is an issue with MEC1414-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-NU part is unused and in its original packaging.
Return procedure for MEC1414-NU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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