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Microchip Technology EMC6D103S-CZC-TR
- Part No.:
- EMC6D103S-CZC-TR
- Manufacturer:
- Microchip Technology
- Category:
- Thermal Management
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
EMC6D103S-CZC-TR.pdf
- Description:
- IC FAN CTRLR 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
EMC6D103S-CZC-TR from SMSC is a 24-pin SSOP fan control IC with integrated hardware monitoring, supporting three high-frequency PWM outputs (up to 100 kHz), four fan tachometer inputs, dual remote thermal diode sensing (±3°C accuracy), internal ambient temperature measurement, and monitoring of VCC/VCCP voltages. It enables automatic fan speed regulation in server motherboard power delivery and thermal management subsystems.
For engineers reviewing the EMC6D103S-CZC-TR datasheet, EMC6D103S-CZC-TR pinout, EMC6D103S-CZC-TR application, or EMC6D103S-CZC-TR equivalent, this device delivers programmable fan ramp rate control, SMBus 2.0 interface with three fixed slave addresses, VID input support for CPU voltage identification, sleep/shutdown low-power modes, and interrupt-driven out-of-limit detection for thermal and voltage events.
Technical Context
The EMC6D103S-CZC-TR implements a dedicated hardware-based monitoring architecture with independent ADC channels for voltage, temperature, and fan tachometer signals-no host CPU intervention required for basic limit checking. Its SMBus 2.0 interface operates at 100 kHz with fixed address options (0x2C, 0x2D, 0x2E) and non-discoverable addressing.
Thermal control logic supports up to three configurable thermal zones, where one PWM output can be linked to multiple zones via register-mapped associations; temperature data is reported in 8-bit two's complement format with 1°C resolution, and fan RPM is calculated from tachometer edge counts over programmable sampling intervals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PWM Outputs | 3 independent outputs, programmable frequency (22–100 kHz), enabling precise acoustic noise control for 4-wire fans |
| Fan Tach Inputs | 4 inputs supporting 2- or 3-edge RPM detection; minimum detectable RPM = 300 (2-edge) or 450 (3-edge) |
| Temperature Sensing | Internal ambient sensor + 2 remote diode inputs; ±3°C accuracy across –40°C to +125°C range |
| Voltage Monitoring | VCC and VCCP inputs; 10-bit ADC with 12.5 mV LSB resolution; supports +2.5V, +5V, +12V, and processor rail monitoring |
| SMBus Interface | SMBus 2.0 compliant, 100 kHz max clock, fixed slave addresses (0x2C/0x2D/0x2E), no general call or ARP support |
| Power Modes | Continuous monitoring, cycling mode (power savings), Sleep (10 µA typical), Shutdown (1 µA typical) |
| VID Inputs | 5-bit VID bus for CPU core voltage identification; maps to standard Intel VRD specifications |
Pinout & Package
24-pin SSOP (0.150" wide body, 0.025" pitch), lead-free and RoHS compliant per JEDEC MO-153AC. Package dimensions: 7.5 mm × 4.4 mm × 1.75 mm (max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage input | 3.3 V nominal operation; 5 V tolerant on all digital inputs; powers internal analog and digital blocks |
| GND | Ground reference | Analog and digital ground shared; requires low-impedance PCB return path for ADC stability |
| SCL | SMBus clock input | Open-drain, pulled up externally; supports 100 kHz SMBus timing with internal slew-rate control |
| SDA | SMBus data I/O | Open-drain, bidirectional; complies with SMBus 2.0 electrical specs including timeout and alert response |
| INT# | Interrupt output | Active-low open-drain signal asserting on out-of-limit temperature/voltage/fan fault conditions |
| PWM1–PWM3 | PWM fan drive outputs | Push-pull, 3.3 V CMOS-compatible; each supports programmable frequency and ramp rate for acoustic optimization |
| TACH1–TACH4 | Fan tachometer inputs | Open-collector compatible; internal pull-up enables direct connection to fan tach lines without external resistors |
| DIODE1+, DIODE1− | Remote thermal diode channel 1 | Differential input pair for external CPU/GPU diode sensing; supports bias current generation internally |
| DIODE2+, DIODE2− | Remote thermal diode channel 2 | Independent differential input for second remote sensor; shares same ADC but separate calibration registers |
| VID0–VID4 | Voltage ID inputs | 5-bit parallel bus accepting standard VRD-compliant codes; used to determine target CPU core voltage |
| ADIN | Analog voltage input | Monitors VCCP (processor core voltage); 10-bit ADC channel with dedicated gain and offset calibration |
| VREF | ADC reference voltage | Internal 2.5 V reference; bypass capacitor required (0.1 µF ceramic) for stable conversion accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Programmable PWM ramp rate | Adjusts fan speed transition time (1–255 steps) to suppress acoustic noise during thermal transients |
| Multi-zone fan control | Single PWM output can be assigned to up to three thermal zones, enabling coordinated cooling across CPU, memory, and chipset |
| Hardware-accelerated monitoring | Continuous limit comparison in silicon-no host polling required for over-temperature or fan stall detection |
| Low-power operation modes | Sleep mode draws 10 µA; Shutdown mode draws 1 µA-enables always-on thermal supervision in standby states |
| Backward-compatible PWM drive | Configurable low-frequency mode (22 kHz) supports legacy 2-wire fans while high-frequency mode (100 kHz) eliminates audible whine |
| XOR tree test mode | Enables production-level functional testing of internal logic paths without external stimulus or software interaction |
Applications
| Server Motherboard Thermal Management | Embedded Industrial Controller Cooling |
|---|---|
Use Scenario: Real-time thermal regulation across CPU, memory DIMMs, and PCIe switch junctions in 1U/2U rack servers. IC Role / Device Role / Timing Role: Hardware monitor and fan controller executing autonomous PWM updates based on zone-specific temperature thresholds. Use Value: Eliminates host CPU polling overhead; ensures fan response within 100 ms of thermal excursion via hardware interrupt and preconfigured ramp profiles. |
Use Scenario: Fan-cooled DIN-rail PLCs operating in extended temperature environments (–40°C to +85°C). IC Role / Device Role / Timing Role: Ambient + remote diode sensing combined with VCCP monitoring for system-level power integrity assurance. Use Value: ±3°C remote diode accuracy enables reliable derating decisions; VID decoding confirms correct CPU voltage rail configuration before boot. |
| Network Switch Power Supply Monitoring | High-Density Storage Enclosure Fan Control |
Use Scenario: Monitoring +12 V, +5 V, and VCCP rails alongside thermal zones in modular L2/L3 switches with hot-swap PSUs. IC Role / Device Role / Timing Role: Voltage supervisor and multi-fan coordinator interfacing via SMBus to baseboard management controller (BMC). Use Value: Dual VCC/VCCP monitoring detects PSU imbalance; tachometer inputs validate fan redundancy status without BMC firmware involvement. |
Use Scenario: Acoustic-optimized cooling for JBOD enclosures housing 24+ 3.5" HDDs with variable workload heat profiles. IC Role / Device Role / Timing Role: Multi-zone PWM controller linking individual fans to localized thermal sensors near drive bays. Use Value: Programmable ramp rate prevents sudden fan surges during sequential drive spin-up; 4-tach input count supports per-bay speed verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fan control and hardware monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TMP451 | Single-zone thermal monitor only; no PWM outputs or fan tach inputs; SMBus address selectable (not fixed) | Limited to temperature-only supervision; requires external fan driver IC for closed-loop control | Select when only remote diode monitoring is needed and fan control is handled separately |
| Nuvoton NCT6776F | Integrated Super I/O with LPC interface; 6 PWMs, 8 tach inputs, but larger 128-pin LQFP package and higher BOM cost | Targets full-platform monitoring (including GPIO, keyboard controller); not optimized for compact fan-centric designs | Select for motherboards requiring comprehensive I/O integration beyond thermal/fan functions |
Compared with TMP451 and NCT6776F, the EMC6D103S-CZC-TR provides balanced integration-three PWMs and four tach inputs in a compact 24-pin SSOP-with deterministic SMBus addressing and minimal external component requirements for standalone fan control subsystems.
Availability
EMC6D103S-CZC-TR is available at Aetrix Electronics and suitable for server motherboard thermal management, embedded industrial controller cooling, network switch power supply monitoring, and high-density storage enclosure fan control requiring stable component supply and long-term lifecycle support.
Supply support for EMC6D103S-CZC-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
SMSC (Standard Microsystems Corporation), now part of Microchip Technology, specializes in connectivity, timing, and system management ICs for computing and communications infrastructure.
The EMC6D103S-CZC-TR belongs to SMSC's environmental monitoring product line, designed specifically for ACPI-compliant thermal and power supervision in x86 server and embedded platforms with minimal host intervention.
FAQ
What is the maximum PWM frequency supported by the EMC6D103S-CZC-TR?
The EMC6D103S-CZC-TR supports a maximum PWM frequency of 100 kHz, configurable via registers 5Fh–61h. This high-frequency capability eliminates audible noise in 4-wire fans while maintaining compatibility with legacy 2-wire fans through programmable lower-frequency modes down to 22 kHz. The EMC6D103S-CZC-TR uses internal timing dividers to achieve precise duty-cycle resolution across the full frequency range.
How many thermal diodes can the EMC6D103S-CZC-TR monitor simultaneously?
The EMC6D103S-CZC-TR monitors two remote thermal diodes (DIODE1 and DIODE2) plus its internal ambient temperature sensor-totaling three independent thermal zones. Each remote diode input is differential and includes internal bias current generation, supporting standard CPU/GPU thermal diodes with ±3°C accuracy from –40°C to +125°C. The EMC6D103S-CZC-TR stores temperature readings in registers 25h–27h with 1°C resolution.
Does the EMC6D103S-CZC-TR require external components for voltage monitoring?
No, the EMC6D103S-CZC-TR does not require external scaling resistors or op-amps for voltage monitoring. Its analog inputs accept +2.5 V, +5 V, +12 V, and VCCP directly, with internal 10-bit ADCs calibrated for 12.5 mV LSB resolution. Only a 0.1 µF ceramic bypass capacitor on VREF is required for stable conversions. The EMC6D103S-CZC-TR integrates all signal conditioning circuitry on-die.
What SMBus slave addresses does the EMC6D103S-CZC-TR support?
The EMC6D103S-CZC-TR supports three fixed SMBus slave addresses: 0x2C, 0x2D, and 0x2E. Address selection is implemented using the ADDR0 and ADDR1 pins per Figure 5.1 in the datasheet; these pins are hardwired at board level and cannot be changed dynamically. The EMC6D103S-CZC-TR is not SMBus discoverable and does not respond to general call or ARP commands.
Can the EMC6D103S-CZC-TR operate in low-power states while retaining monitoring functionality?
Yes, the EMC6D103S-CZC-TR supports Sleep mode (10 µA typical) and Shutdown mode (1 µA typical), both retaining full hardware monitoring capability-including limit comparisons and interrupt generation-without host CPU involvement. In Sleep mode, ADC conversions continue at reduced rate; in Shutdown mode, only critical comparators remain active. The EMC6D103S-CZC-TR exits either mode via SMBus command or INT# assertion.
EMC6D103S-CZC-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Fan Control, Temp Monitor
- Sensor Type:
- Internal and External
- Sensing Temperature:
- 0°C ~ 70°C, -40°C ~ 125°C
- Accuracy:
- ±3°C Local(Max), ±5°C Remote(Max)
- Topology:
- ADC (Sigma Delta), Multiplexer, Register Bank
- Output Type:
- SMBus
- Output Alarm:
- Yes
- Output Fan:
- Yes
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
EMC6D103S-CZC-TR FAQ
1.How can I place an order for EMC6D103S-CZC-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for EMC6D103S-CZC-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 EMC6D103S-CZC-TR reliable?
The price and inventory of EMC6D103S-CZC-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EMC6D103S-CZC-TR is usually 5 days.
3.What payment methods are accepted for EMC6D103S-CZC-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EMC6D103S-CZC-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EMC6D103S-CZC-TR?
EMC6D103S-CZC-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EMC6D103S-CZC-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 EMC6D103S-CZC-TR?
For technical support, including EMC6D103S-CZC-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EMC6D103S-CZC-TR requirements.
6.How does Aetrix verify that EMC6D103S-CZC-TR is sourced from the original manufacturer or authorized distributors?
All EMC6D103S-CZC-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 EMC6D103S-CZC-TR meets industry standards.
7.What is the process for return or replacement of EMC6D103S-CZC-TR?
All EMC6D103S-CZC-TR units undergo pre-shipment inspection (PSI). If there is an issue with EMC6D103S-CZC-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 EMC6D103S-CZC-TR part is unused and in its original packaging.
Return procedure for EMC6D103S-CZC-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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