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Microchip Technology MEC1322-LZY-C0-TR
- Part No.:
- MEC1322-LZY-C0-TR
- Manufacturer:
- Microchip Technology
- Category:
- Application Specific Microcontrollers
- Package:
- 132-VFQFN Dual Rows, Exposed Pad
- Datasheet:
-
MEC1322-LZY-C0-TR.pdf
- Description:
- KEYBOARD AND EMBEDDED CTRLR
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
MEC1322-LZY-C0-TR from Microchip Technology is an ARM® Cortex®-M4-based embedded controller IC designed for notebook PC keyboard and system power management. It integrates 128KB SRAM (96KB code + 32KB data), LPC interface (19–33 MHz), RTC with VCC0 backup, 5-channel 10-bit ADC (12 µs conversion, 0–3.3 V range), and hardware root-of-trust via RSA-2048/SHA-256 EC code validation.
For engineers reviewing the MEC1322-LZY-C0-TR datasheet, MEC1322-LZY-C0-TR pinout, MEC1322-LZY-C0-TR application, or MEC1322-LZY-C0-TR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases in notebook EC subsystems, and validated alternative parts for design continuity and supply resilience.
Technical Context
The MEC1322-LZY-C0-TR implements a full-featured embedded controller subsystem with dual SPI memory interfaces (private + shared), 8042-style host mailbox registers, ACPI-ECI support (1/4-byte transfers), and integrated power management including RSMRST# assertion, VCC1_RST# output, and hibernation timers. Its ARM Cortex-M4 core includes FPU, NVIC with 240 interrupt sources, and full debug trace (ETM/ITM/DWT/TPIU).
It supports concurrent low-power operation across multiple domains: PS/2 ports remain functional in suspend, SMBus controllers operate on standby power, RTC and VBAT-backed RAM retain state during deep sleep, and PWM/LED/tachometer blocks maintain breathing, fan control, and wake-capable scanning without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4 with hardware FPU, 32-bit v7-M ISA, bit-banding, and NVIC supporting 240 vectored interrupts |
| Memory | 128KB SRAM (96KB code-optimized + 32KB data-optimized) + 32KB boot ROM |
| LPC Interface | Intel Low Pin Count bus compliant, 19–33 MHz operation, supports SCI, SMI#, clock run, and ACPI PM1 |
| RTC & Backup | VCC0/VBAT-powered real-time clock with 32kHz crystal oscillator, calendar, alarms, leap year, and DST support |
| ADC | 5-channel 10-bit SAR ADC, 12 µs conversion time, 2.9 mV resolution, 0–3.3 V input range, internal 3.0 V ±1% reference |
| Security | Hardware-based root of trust: RSA-2048 signature verification of EC firmware loaded from SPI flash using SHA-256 hash |
| Fan Control | RPM-based algorithm with TACH input + PWM output; 3% accuracy from 500–16k RPM, spin-up routine, aging detection |
Pinout & Package
MEC1322-LZY-C0-TR is packaged in a 132-pin DQFN (6.0 × 6.0 mm, 0.4 mm pitch) with exposed thermal pad. All I/O pins are 3.3 V tolerant and support configurable drive modes (push-pull, open-drain, bi-directional). Power domains include VCC1 (main), VBAT (backup), and VCC_PWRGD (power-good monitoring).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC1 (Pins B7, A19, B31, A29, J5, N12, H6, A10, C9) | Main supply rail | Provides core logic and I/O power; enables full functionality including LPC, SPI, and CPU execution |
| VBAT (Pin A19 in DQFN) | Backup supply | Powers RTC, VBAT RAM (64 B), power-fail registers, and hibernation timers during host power-off |
| LAD[3:0] (Pins B26–B29, A25–A26) | LPC address/data bus | 4-bit multiplexed address/data lines for Intel LPC protocol communication with host south bridge |
| LFRAME# (Pin A27) | LPC frame signal | Active-low strobe indicating start of LPC transaction; synchronized to PCI_CLK |
| SER_IRQ (Pin B34) | Serial IRQ output | Open-drain interrupt signal to host for EC-generated events (e.g., keyboard press, thermal alert) |
| RSMRST# (Pin A49) | Resume reset output | Asserted during deep-sleep exit to coordinate south bridge SUSCLK/RSMRST# gating per ACPI spec |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot Validation | Hardware-accelerated RSA-2048/SHA-256 signature check on every EC firmware load from SPI flash prevents malicious or corrupted code execution |
| Dual SPI Memory Interface | Private SPI for dedicated EC firmware + shared SPI co-located with BIOS enables flexible firmware partitioning and update isolation |
| ACPI-Compliant Power Management | Full ACPI-ECI support (1/4-byte transfers), SCI event generation, SMI# output, and RSMRST# coordination enable seamless OS-directed sleep/wake transitions |
| Integrated Fan Control Subsystem | Hardware RPM-PWM engine with automatic tach feedback, spin-up ramp, aging detection, and 3% accuracy across 500–16k RPM eliminates need for external fan controller IC |
| Low-Power Peripheral Operation | PS/2 ports, SMBus controllers, LED PWM, and keyboard scan matrix remain fully operational in EC suspend states, enabling instant-on responsiveness |
Applications
| Ultra-Thin Notebook EC Subsystem | Convertible Tablet System Management |
|---|---|
|
Use Scenario: Real-time keyboard matrix scanning, lid-open detection, battery charge status reporting, and thermal throttling coordination in sub-15mm clamshell notebooks. IC Role / Device Role / Timing Role: Primary embedded controller managing host-EC communication via LPC, executing ACPI-defined power state transitions, and driving PS/2/keyboard scan peripherals. Use Value: Enables <100 ms resume-from-suspend latency, reduces BOM count by integrating RTC, ADC, PWM, and fan control, and ensures secure firmware boot via hardware root of trust. |
Use Scenario: Managing hinge-angle sensing, stylus proximity, display rotation, and adaptive fan speed in 2-in-1 devices with dynamic thermal profiles. IC Role / Device Role / Timing Role: System-level sensor aggregator and actuator driver, interfacing with I²C sensors, reading ADC channels for thermal zones, and modulating PWM outputs for fan and LED feedback. Use Value: Delivers deterministic response to orientation changes and thermal events using wake-capable GPIOs and hardware timers, eliminating host polling overhead and extending battery life. |
| Business-Class Laptop Instant-On Platform | Industrial Thin Client Power Controller |
|
Use Scenario: Supporting Windows Modern Standby with connected standby, fast wake-on-keypress, and background sensor monitoring while main CPU is powered down. IC Role / Device Role / Timing Role: Autonomous power manager handling S0ix residency, maintaining VBAT-backed RTC and memory, and generating SCI/SMI events without waking host CPU. Use Value: Achieves sub-50 µA EC standby current, guarantees accurate timekeeping during multi-day suspend, and provides tamper-resistant firmware validation before each boot cycle. |
Use Scenario: Controlling power sequencing, monitoring rail voltages, managing fan speed based on ambient temperature, and logging power-event history in fanless industrial thin clients. IC Role / Device Role / Timing Role: Standalone power supervisor interfacing with host via LPC or BC-Link, executing deterministic power-on reset sequences, and providing watchdog supervision for host processor. Use Value: Eliminates need for discrete supervisors and voltage monitors; integrates 5-channel ADC, programmable timers, and nonvolatile VBAT RAM for field-deployable fault logging and configuration retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MEC1322-LZY-C1-TR | Same die, identical pinout and feature set; differs only in factory-programmed OTP configuration (e.g., default SPI flash mapping, security key provisioning) | Targeted at designs requiring pre-provisioned secure boot keys or custom EC initialization sequences | Select when OEM requires factory-assigned cryptographic identities or pre-loaded firmware signatures. |
| IT8528E | 8051-based EC; lacks ARM Cortex-M4, FPU, hardware crypto acceleration, and modern debug infrastructure (no ETM/ITM) | Legacy platform migration where LPC timing margins, interrupt latency, or firmware size constraints prevent ARM adoption | Choose only for cost-sensitive legacy refreshes where software porting effort outweighs performance/security benefits of MEC1322-LZY-C0-TR. |
Compared with MEC1322-LZY-C0-TR, the -C1 variant offers identical hardware but different factory OTP settings-ideal for secure provisioning-while IT8528E trades ARM performance and hardware security for mature 8051 toolchains and lower unit cost in non-security-critical deployments.
Availability
MEC1322-LZY-C0-TR is available at Aetrix Electronics and suitable for ultra-thin notebook EC subsystems, convertible tablet system management, business-class laptop instant-on platforms, and industrial thin client power controllers requiring stable component supply, long-term lifecycle support, and secure firmware execution.
Supply support for MEC1322-LZY-C0-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 Inc. is a leading provider of microcontroller, analog, FPGA, and mixed-signal semiconductors, with global design, manufacturing, and sales operations focused on embedded control solutions.
The MEC1322 product line delivers highly integrated, secure, low-power embedded controllers optimized for notebook, tablet, and thin-client platforms requiring ACPI-compliant power management, hardware root-of-trust, and autonomous peripheral control.
FAQ
What is the primary function of the MEC1322-LZY-C0-TR in a notebook platform?
The MEC1322-LZY-C0-TR serves as the dedicated embedded controller managing keyboard/mouse input, thermal regulation, fan control, battery charging, lid switch detection, and ACPI power state transitions. It communicates with the host CPU via the LPC bus and executes firmware independently to enable instant-on responsiveness and secure boot validation before host processor initialization.
Does the MEC1322-LZY-C0-TR support secure firmware updates?
Yes, the MEC1322-LZY-C0-TR performs hardware-accelerated RSA-2048 signature verification using SHA-256 hashing on every EC firmware image loaded from SPI flash. This occurs prior to execution and ensures only cryptographically signed, uncorrupted firmware runs-establishing a hardware root of trust that resists physical replacement attacks.
What package type is used for the MEC1322-LZY-C0-TR?
The MEC1322-LZY-C0-TR is supplied in a 132-pin DQFN package (6.0 × 6.0 mm, 0.4 mm pitch) with exposed thermal pad. This package supports high-density notebook PCB layouts and provides robust thermal performance for sustained EC operation under thermal stress conditions.
Can the MEC1322-LZY-C0-TR operate without host CPU intervention?
Yes, the MEC1322-LZY-C0-TR operates autonomously across all power states-including deep sleep (S5) and hibernate-using VBAT-supplied resources. Its RTC, hibernation timers, PS/2 ports, keyboard scan matrix, and fan control subsystem remain fully functional without host CPU power or software involvement.
How does the MEC1322-LZY-C0-TR handle fan speed control?
The MEC1322-LZY-C0-TR implements a dedicated RPM-PWM hardware engine that reads tachometer input, calculates target PWM duty cycle, applies ramp rate control, detects aging fans or invalid drive signals, and executes spin-up routines-all without CPU intervention. Accuracy is maintained at ±3% across 500–16,000 RPM.
MEC1322-LZY-C0-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 132-VFQFN Dual Rows, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Keyboard and Embedded Controller
- Core Processor:
- ARM® Cortex®-M4
- Program Memory Type:
- -
- Controller Series:
- -
- RAM Size:
- 128K x 8
- Interface:
- ACPI, BC-Link, I2C/SMBus, LPC, PECI, PS/2, SPI, UART
- Number of I/O:
- 116
- Voltage - Supply:
- 3.135V ~ 3.465V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 132-DQFN (11x11)
MEC1322-LZY-C0-TR FAQ
1.How can I place an order for MEC1322-LZY-C0-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MEC1322-LZY-C0-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 MEC1322-LZY-C0-TR reliable?
The price and inventory of MEC1322-LZY-C0-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MEC1322-LZY-C0-TR is usually 5 days.
3.What payment methods are accepted for MEC1322-LZY-C0-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MEC1322-LZY-C0-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MEC1322-LZY-C0-TR?
MEC1322-LZY-C0-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MEC1322-LZY-C0-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 MEC1322-LZY-C0-TR?
For technical support, including MEC1322-LZY-C0-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MEC1322-LZY-C0-TR requirements.
6.How does Aetrix verify that MEC1322-LZY-C0-TR is sourced from the original manufacturer or authorized distributors?
All MEC1322-LZY-C0-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 MEC1322-LZY-C0-TR meets industry standards.
7.What is the process for return or replacement of MEC1322-LZY-C0-TR?
All MEC1322-LZY-C0-TR units undergo pre-shipment inspection (PSI). If there is an issue with MEC1322-LZY-C0-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 MEC1322-LZY-C0-TR part is unused and in its original packaging.
Return procedure for MEC1322-LZY-C0-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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