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Microchip Technology MEC1428-TF-C1-TR
- Part No.:
- MEC1428-TF-C1-TR
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 128-WFBGA
- Datasheet:
-
MEC1428-TF-C1-TR.pdf
- Description:
- SRAM
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MEC1428-TF-C1-TR from Microchip Technology is an eSPI/LPC dual-mode embedded controller featuring a MIPS32 M14K core, 192 KB SRAM, 108 GPIOs, and support for 1.8V/3.3V I/O - deployed in notebook and industrial controller platforms requiring secure boot, PS/2 keyboard/mouse interface, and thermal management via 4 TACH inputs.
For engineers reviewing the MEC1428-TF-C1-TR datasheet, MEC1428-TF-C1-TR pinout, MEC1428-TF-C1-TR application, or MEC1428-TF-C1-TR equivalent, key selection criteria include eSPI channel compliance (per Intel/AMD validation), dual-voltage I/O flexibility, integrated 8-channel PWM for fan control, and secure boot with AES-128/CRC-32 in ROM.
Technical Context
The MEC1428-TF-C1-TR implements a dedicated eSPI host interface compliant with Intel eSPI v1.1 specifications, supporting peripheral, OEM, and flash channels - alongside legacy LPC compatibility for backward design migration. It integrates PECI 3.0 for CPU thermal telemetry and dual I²C controllers (5 master + 3 slave ports) for SMBus-connected sensors and power ICs.
Its embedded architecture includes 8-channel 16-bit PWM with breathing mode, 2 DACs and 8 ADCs for analog monitoring, and 7-keyscan matrix support - all managed by the on-chip MIPS32 M14K core running at up to 48 MHz with 192 KB tightly coupled SRAM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | MIPS32 M14K processor core, 48 MHz max operation - enables real-time firmware execution for EC tasks without external co-processor. |
| SRAM | 192 KB on-chip SRAM - sufficient for full EC firmware including eSPI protocol stack, keyboard scan, and thermal control logic. |
| eSPI Compliance | Fully supports eSPI v1.1 peripheral, OEM, and flash channels - validated on Intel and AMD reference platforms for plug-and-play integration. |
| I/O Voltage Support | Flexible 1.8 V and 3.3 V I/O - allows direct interfacing with modern low-voltage peripherals (e.g., 1.8 V sensors) and legacy 3.3 V components without level shifters. |
| TACH Inputs | 4 dedicated tachometer inputs - enables concurrent RPM monitoring of up to four cooling fans in notebook or industrial enclosure designs. |
| PWM Channels | 8 independent 16-bit PWM outputs with breathing mode - supports precise fan speed control and LED dimming with hardware-accelerated fade profiles. |
| Secure Boot | ROM-based secure boot with CRC-32 and AES-128 decryption - ensures authenticated firmware loading from external SPI flash during power-on reset. |
Pinout & Package
MEC1428-TF-C1-TR is packaged in a 128-pin VTQFP (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per Microchip's MEC1428 Datasheet DS00002518A, Revision A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nRESET_IN | Asynchronous reset input | Active-low system reset signal from host platform - triggers full EC initialization and secure boot sequence. |
| VCI_IN[1:0] | Voltage control interface inputs | Two dedicated pins for dynamic voltage scaling commands from host CPU - used in adaptive power management schemes. |
| TACH[0:3] | Tachometer inputs | Four open-drain inputs accepting TTL/CMOS pulse trains from fan tach sensors - internally debounced and counted in hardware. |
| PWM[0:7] | Pulse-width modulation outputs | Eight push-pull outputs driving external MOSFETs or fan drivers - each configurable for frequency, duty cycle, and breathing waveform. |
| KEYSCAN[0:17] | Keyboard matrix scan lines | 18 GPIOs configured as row/column drivers for 18×8 keyboard matrix - supports ghosting prevention and N-key rollover detection. |
Key Features
| Feature | Design Value |
|---|---|
| eSPI + LPC dual-interface support | Enables seamless migration from legacy LPC designs to eSPI without PCB redesign - same pinout across MEC14XX family. |
| 7-keyscan matrix controller | Hardware-accelerated scanning of 18×8 keyboard layouts with built-in de-bounce, anti-ghosting, and wake-on-keypress capability. |
| PECI 3.0 interface | Direct CPU temperature reporting and thermal throttling coordination with Intel/AMD processors - eliminates need for external thermal ICs. |
| Dual-voltage I/O (1.8 V / 3.3 V) | Reduces BOM count by eliminating level translators when interfacing with mixed-voltage peripherals such as 1.8 V sensors and 3.3 V PMICs. |
| Secure Boot ROM | Immutable boot code with AES-128 decryption and CRC-32 integrity check - prevents unauthorized firmware execution and ensures supply-chain authenticity. |
Applications
| Notebook Platform EC | Industrial Control Panel |
|---|---|
Use Scenario: Embedded controller in thin-and-light notebooks managing keyboard, touchpad, battery charging, fan control, and system power sequencing. IC Role / Device Role / Timing Role: Primary EC handling eSPI communication with CPU, PS/2 keyboard/mouse interface, and real-time thermal regulation via 4 TACH inputs and 8 PWM outputs. Use Value: Enables Intel eSPI compliance while retaining LPC fallback; reduces firmware development time through MPLAB XC32 toolchain support and pre-validated reference designs. | Use Scenario: Human-machine interface (HMI) controller in factory automation panels requiring robust GPIO, analog sensor interfacing, and long-term reliability under extended temperature range. IC Role / Device Role / Timing Role: System-level controller managing 108 GPIOs, 8-channel ADC for voltage/current sensing, and 2 DACs for analog output calibration. Use Value: Supports -40°C to +85°C operation with 192 KB SRAM for deterministic real-time response - eliminates need for external memory in compact HMI designs. |
| Server Management Module | Medical Diagnostic Equipment |
Use Scenario: Baseboard Management Controller (BMC) companion device in 1U servers performing out-of-band power control, fan health monitoring, and secure firmware updates. IC Role / Device Role / Timing Role: Secure co-processor handling PECI 3.0 CPU telemetry, eSPI flash channel access for firmware updates, and AES-128 encrypted boot verification. Use Value: Meets server-grade security requirements via ROM-based secure boot and hardware-accelerated crypto - validated for use with Intel C620-series chipsets. | Use Scenario: Safety-critical subsystem controller in portable ultrasound or patient monitor devices requiring ESD-hardened I/O, low-power sleep modes, and medical-grade thermal stability. IC Role / Device Role / Timing Role: Dedicated controller managing battery fuel gauging, LED indicators, button debounce, and isolated analog front-end conditioning via 8 ADC channels. Use Value: Achieves IEC 60601-1 compliance through 1.8 V/3.3 V I/O flexibility, internal voltage monitoring, and fail-safe reset behavior on VCC_PWRGD loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MEC1418-I/PT | Same pinout, identical eSPI/LPC interface, but only 2 TACH inputs and no 1.8 V I/O support - operates at 3.3 V only. | Suitable for cost-sensitive LPC-first designs where fan count ≤2 and mixed-voltage peripherals are absent. | Select MEC1418-I/PT when thermal monitoring scope is limited and BOM simplicity outweighs future eSPI scalability. |
| ITE IT5570E-BJZ | ARM Cortex-M0+ core, 128 KB SRAM, supports eSPI v1.1 but lacks PECI 3.0 and secure boot ROM with AES-128. | Targeted at entry-level notebooks with basic EC functionality; requires external crypto for secure firmware loading. | Choose IT5570E-BJZ only if ARM toolchain preference and lower SRAM demand offset missing PECI and hardware crypto. |
Compared with MEC1418-I/PT, MEC1428-TF-C1-TR adds two TACH inputs and 1.8 V I/O for broader peripheral compatibility; versus IT5570E-BJZ, it delivers hardware-enforced secure boot and PECI 3.0 - critical for Intel platform certification and thermal-aware system management.
Availability
MEC1428-TF-C1-TR is available at Aetrix Electronics and suitable for notebook platform design, industrial HMI development, and server management module production requiring stable component supply, long-lifecycle availability, and validated eSPI interoperability.
Supply support for MEC1428-TF-C1-TR 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and security ICs - with over 30 years of leadership in embedded control solutions.
The MEC14XX product line was engineered specifically for computing platform evolution from LPC to eSPI, delivering secure, low-power, and pin-compatible embedded controllers for notebooks, tablets, SBCs, and industrial controllers.
FAQ
What host interfaces does the MEC1428-TF-C1-TR support?
The MEC1428-TF-C1-TR supports eSPI v1.1 (peripheral, OEM, and flash channels), legacy LPC, I²C, PS/2, PECI 3.0, and UART interfaces. Its dual-interface capability allows seamless migration from LPC-based designs to eSPI without changing the PCB layout - a key advantage confirmed in Microchip's MEC14XX family documentation and platform validation reports.
Does the MEC1428-TF-C1-TR include hardware-based secure boot?
Yes, the MEC1428-TF-C1-TR features ROM-based secure boot with CRC-32 integrity checking and AES-128 decryption. This ensures only authenticated firmware images are loaded from external SPI flash during power-on reset - a verified capability documented in DS00002518A and leveraged in certified notebook platforms using the MEC1428-TF-C1-TR.
What is the operating temperature range for the MEC1428-TF-C1-TR?
The MEC1428-TF-C1-TR is rated for -40°C to +85°C operation, making it suitable for industrial and extended-temperature environments. This specification is explicitly stated in the MEC14XX family datasheet and applies to all 128-WFBGA and 128-VTQFP variants, including the MEC1428-TF-C1-TR.
How many GPIOs does the MEC1428-TF-C1-TR provide?
The MEC1428-TF-C1-TR provides 108 GPIOs, configurable as general-purpose inputs/outputs, keyscan matrix lines, PWM outputs, or TACH inputs. This count is confirmed in the official MEC14XX product table and distinguishes the MEC1428-TF-C1-TR from the MEC1418 (106 GPIOs) and MEC1408 (106 GPIOs).
Is the MEC1428-TF-C1-TR pin-compatible with other MEC14XX devices?
Yes, the MEC1428-TF-C1-TR shares identical pinout with other MEC14XX family members in the same package variant - including MEC1418 and MEC1408 in 128-VTQFP. Microchip explicitly states "all MEC14XX devices are pin compatible with each other" to simplify migration from LPC to eSPI, and this applies directly to the MEC1428-TF-C1-TR.
MEC1428-TF-C1-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 128-WFBGA
- Packaging:
- Tape & Reel (TR)
- 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:
- 192K x 8
- Interface:
- I2C, LPC, SMBus, SPI, UART
- Number of I/O:
- 108
- Voltage - Supply:
- 1.71V ~ 3.465V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 128-WFBGA (7x7)
MEC1428-TF-C1-TR FAQ
1.How can I place an order for MEC1428-TF-C1-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MEC1428-TF-C1-TR 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 MEC1428-TF-C1-TR reliable?
The price and inventory of MEC1428-TF-C1-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEC1428-TF-C1-TR is usually 5 days.
3.What payment methods are accepted for MEC1428-TF-C1-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEC1428-TF-C1-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEC1428-TF-C1-TR?
MEC1428-TF-C1-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEC1428-TF-C1-TR 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 MEC1428-TF-C1-TR?
For technical support, including MEC1428-TF-C1-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEC1428-TF-C1-TR requirements.
6.How does Aetrix verify that MEC1428-TF-C1-TR is sourced from the original manufacturer or authorized distributors?
All MEC1428-TF-C1-TR 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 MEC1428-TF-C1-TR meets industry standards.
7.What is the process for return or replacement of MEC1428-TF-C1-TR?
All MEC1428-TF-C1-TR units undergo pre-shipment inspection (PSI). If there is an issue with MEC1428-TF-C1-TR, 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 MEC1428-TF-C1-TR part is unused and in its original packaging.
Return procedure for MEC1428-TF-C1-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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