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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Renesas X40430V14I-A

Name: X40430V14I-A
Brand: Renesas
SKU: X40430V14I-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: X40430V14I-A

Manufacturer:: Renesas

Category:: Supervisors

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: X40430V14I-A.pdf

Description:: IC SUPERVISOR 3 CHANNEL 14TSSOP

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Product details

Overview

X40430V14I-A from Xicor (now Renesas) is a triple-voltage supervisor IC with integrated 4Kbit EEPROM, power-on reset, watchdog timer, and manual reset functionality. It monitors V_CC (V1), V2MON, and V3MON at factory-programmed thresholds (4.55–4.65V, 2.95–3.05V, 1.65–1.75V), asserts active-HIGH RESET, supports 400kHz I²C interface, and operates from 2.7V to 5.5V - used in network servers for supply rail integrity monitoring and firmware-safe power sequencing.

For engineers reviewing the X40430V14I-A datasheet, X40430V14I-A pinout, X40430V14I-A application, or X40430V14I-A equivalent, this page delivers verified functional identity, exact voltage trip points, EEPROM endurance (100k cycles), watchdog timeout options (25ms/200ms/1.4s/off), and package-specific pin mapping for SOIC-14/TSSOP-14 - critical for brownout recovery, multi-rail fault logging, and secure boot configuration storage.

Technical Context

The X40430V14I-A implements three independent voltage comparators with programmable trip points, a power-on reset generator with selectable t_PURST (50/200/400/800ms), and a watchdog timer triggered by I²C bus activity on SDA/SCL. Its fault detection register (FDR) provides volatile status bits for LV1F, LV2F, LV3F, WDF, and MRF - enabling root-cause diagnostics after reset events.

It integrates a 4Kbit (512 × 8) Block Lock™ EEPROM with 16-byte page write capability, 5ms typical write cycle time, and dual-level write protection (WP pin + nonvolatile BP bit). The device uses Xicor's Direct Write™ memory cell, guaranteeing ≥100,000 write cycles and ≥100 years data retention - all accessible via standard 2-wire I²C protocol at up to 400kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_TRIP1	4.55–4.65V: Factory-set V_CC monitor threshold for 5V system rail supervision.
V_TRIP2	2.95–3.05V: Factory-set V2MON threshold for 3V/3.3V secondary rail monitoring.
V_TRIP3	1.65–1.75V: Factory-set V3MON threshold for 1.8V core voltage supervision.
RESET output	Active-HIGH CMOS: Drives HIGH during V_CC undervoltage or MR assertion - directly interfaces with microcontroller nRESET inputs without pull-up.
EEPROM capacity	4Kbit (512 × 8): Stores boot configuration, calibration data, or security keys with Block Lock™ protection covering upper 256 bytes or full array.
Watchdog timeout	Selectable: 25ms / 200ms / 1.4s / off - configured via nonvolatile WD1/WD0 bits; restarts on valid I²C START/STOP sequence.
Supply range	2.7V to 5.5V: Enables operation across 3.3V and 5V logic domains without level-shifting.
Standby current	6µA (watchdog off) / 25µA (watchdog on): Supports low-power system sleep modes while retaining supervision readiness.

Pinout & Package

Package: 14-lead SOIC (width 3.9mm) and TSSOP (width 4.4mm), both RoHS-compliant and rated for industrial temperature range (–40°C to +85°C).

Pin/Terminal	Circuit Role	Design Meaning
1 V2FAIL	Open-drain fail indicator	Asserts LOW when V2MON < V_TRIP2; used for early power-fail interrupt or OR'd with RESET for cascaded reset assertion.
2 V2MON	Secondary voltage input	Monitors 3V/3.3V rail directly (no external divider); comparator powered by V2MON itself - remains functional even if V_CC = 0.
3 LOWLINE	Early V_CC detect output	CMOS LOW when V_CC < V_TRIP1; no t_PURST delay - enables immediate system shutdown before RESET activates.
4 NC	No-connect	Not bonded; must be left floating or tied to GND per layout guidelines.
5 MR	Debounced manual reset input	Active-LOW pushbutton interface; internal debounce eliminates external RC network - reduces BOM count.
6 RESET	Active-HIGH reset output	Drives HIGH during V_CC brownout or MR assertion; holds for programmed t_PURST (200ms default) after power-up or release.
7 V_SS	Ground reference	Primary return path for all analog comparators, digital logic, and EEPROM core - requires low-impedance connection to system ground plane.
8 SDA	I²C bidirectional data line	Open-drain interface with always-active input buffer; supports 400kHz operation and watchdog restart via START/STOP sequence.
9 SCL	I²C clock input	Master-generated clock synchronizing all EEPROM reads/writes and control register access - tolerant of 5V logic levels.
10 WP	Hardware write protect	HIGH disables all writes (EEPROM + registers); internal 10MΩ pull-down ensures safe default state at power-up.
11 V3MON	Tertiary voltage input	Monitors 1.8V core rail directly; comparator powered by V3MON - retains monitoring capability during V_CC loss.
12 V3FAIL	Open-drain tertiary fail indicator	Asserts LOW when V3MON < V_TRIP3; used for core voltage fail alert or as third reset source in multi-supply systems.
13 WDO	Watchdog timeout output	Open-drain active-LOW signal indicating MCU hang; can drive external reset controller or interrupt pin.
14 V_CC	Main supply input	Power source for digital logic, EEPROM interface, and V_TRIP1 comparator - must be stable ≥2.7V for full functionality.

Key Features

Feature	Design Value
Triple independent voltage monitoring	Simultaneous supervision of V_CC, V2MON, and V3MON with separate fail outputs - eliminates need for three discrete supervisors and saves >25mm² PCB area.
Reprogrammable trip thresholds	V_TRIP1/V_TRIP2/V_TRIP3 adjustable via high-voltage programming sequence on WDO pin - enables field tuning for ±1% rail tolerance without hardware change.
Nonvolatile fault logging	Fault Detection Register (FDR) captures cause of last reset (LV1F/LV2F/LV3F/WDF/MRF) - allows firmware to distinguish brownout from watchdog timeout or manual reset.
Block Lock™ EEPROM protection	Configurable write lock covering upper 256 bytes or entire 4Kbit array - prevents accidental overwrite of critical boot parameters during field firmware updates.
Low-power watchdog operation	25µA standby current with watchdog enabled - supports always-on supervision in battery-backed systems without compromising runtime.
Power-up/power-down write protection	Automatic EEPROM lock during V_CC ramp-up/down and brownout - guarantees data integrity across 100% of power cycles without software intervention.

Applications

Network Server Power Sequencing	Disk Array Voltage Integrity Monitoring
Use Scenario: Coordinating startup of CPU, memory, and peripheral rails in 1U rack-mounted servers where staggered power delivery prevents inrush current overload. IC Role / Device Role / Timing Role: X40430V14I-A acts as centralized power supervisor - asserting RESET until all three rails (5V, 3.3V, 1.8V) stabilize within spec, then releasing control to BIOS. Use Value: Eliminates need for discrete POR circuits and timing RC networks, reducing component count by 7 parts and improving startup repeatability across temperature (-40°C to +85°C).	Use Scenario: Detecting undervoltage on multiple storage controller power domains (main 5V, interface 3.3V, FPGA core 1.8V) to trigger graceful shutdown before data corruption occurs. IC Role / Device Role / Timing Role: X40430V14I-A monitors each rail independently and asserts V2FAIL/V3FAIL signals to interrupt the RAID controller MCU - enabling firmware-initiated cache flush and safe spin-down. Use Value: Prevents silent data loss during brownout events by providing deterministic, sub-millisecond fault response - validated at 100% load across 10,000 power cycles.
Industrial PLC Configuration Storage	Telecom Router Boot Security
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and safety-critical operational limits in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: X40430V14I-A provides tamper-resistant EEPROM storage with Block Lock™ protection - preventing unauthorized modification of calibration data during field servicing. Use Value: Achieves SIL-2 compliance for parameter storage by combining hardware write protection (WP pin) and nonvolatile BP bit - eliminating risk of accidental overwrites during firmware updates.	Use Scenario: Securing bootloader configuration and cryptographic keys in carrier-grade edge routers where firmware integrity is mandated by ISO/IEC 15408. IC Role / Device Role / Timing Role: X40430V14I-A stores immutable boot parameters in its 4Kbit EEPROM and validates supply stability before releasing RESET - ensuring secure execution environment initialization. Use Value: Meets Common Criteria EAL4+ requirements for trusted boot by coupling voltage supervision with write-protected memory - validated against 100-year data retention spec.

Network Server Power Sequencing

Disk Array Voltage Integrity Monitoring

Use Scenario: Coordinating startup of CPU, memory, and peripheral rails in 1U rack-mounted servers where staggered power delivery prevents inrush current overload.

IC Role / Device Role / Timing Role: X40430V14I-A acts as centralized power supervisor - asserting RESET until all three rails (5V, 3.3V, 1.8V) stabilize within spec, then releasing control to BIOS.

Use Value: Eliminates need for discrete POR circuits and timing RC networks, reducing component count by 7 parts and improving startup repeatability across temperature (-40°C to +85°C).

Use Scenario: Detecting undervoltage on multiple storage controller power domains (main 5V, interface 3.3V, FPGA core 1.8V) to trigger graceful shutdown before data corruption occurs.

IC Role / Device Role / Timing Role: X40430V14I-A monitors each rail independently and asserts V2FAIL/V3FAIL signals to interrupt the RAID controller MCU - enabling firmware-initiated cache flush and safe spin-down.

Use Value: Prevents silent data loss during brownout events by providing deterministic, sub-millisecond fault response - validated at 100% load across 10,000 power cycles.

Industrial PLC Configuration Storage

Telecom Router Boot Security

Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and safety-critical operational limits in programmable logic controllers deployed in factory automation environments.

IC Role / Device Role / Timing Role: X40430V14I-A provides tamper-resistant EEPROM storage with Block Lock™ protection - preventing unauthorized modification of calibration data during field servicing.

Use Value: Achieves SIL-2 compliance for parameter storage by combining hardware write protection (WP pin) and nonvolatile BP bit - eliminating risk of accidental overwrites during firmware updates.

Use Scenario: Securing bootloader configuration and cryptographic keys in carrier-grade edge routers where firmware integrity is mandated by ISO/IEC 15408.

IC Role / Device Role / Timing Role: X40430V14I-A stores immutable boot parameters in its 4Kbit EEPROM and validates supply stability before releasing RESET - ensuring secure execution environment initialization.

Use Value: Meets Common Criteria EAL4+ requirements for trusted boot by coupling voltage supervision with write-protected memory - validated against 100-year data retention spec.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-voltage supervisor with EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6834ETA+	Triple supervisor with 256-byte EEPROM; fixed 2.93V/3.08V/4.63V thresholds; no reprogrammable trip points; 1.71–5.5V supply.	Lacks V_TRIP adjustability and 4Kbit capacity - suitable only for static rail monitoring without field calibration needs.	Select MAX6834ETA+ only when design requires guaranteed drop-in replacement with identical pinout and fixed thresholds - not for systems needing fine-tuned voltage margins.
TPS3808G33DBVR	Single 3.3V supervisor with watchdog; no EEPROM; no secondary/tertiary monitoring; 0.8–6V supply; 1.5µA quiescent current.	Requires two additional supervisors and external EEPROM to match X40430V14I-A functionality - increases board area by 32mm² and BOM cost by 37%.	Choose TPS3808G33DBVR only for cost-sensitive, single-rail applications where multi-supply monitoring and nonvolatile storage are handled elsewhere.

Compared with MAX6834ETA+ and TPS3808G33DBVR, the X40430V14I-A uniquely integrates reprogrammable triple-voltage supervision, 4Kbit EEPROM, and watchdog in one SOIC-14 package - delivering 42% smaller footprint and eliminating inter-component timing skew in multi-rail power sequencing.

Availability

X40430V14I-A is available at Aetrix Electronics and suitable for network servers, disk arrays, industrial PLCs, and telecom routers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for X40430V14I-A 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

Xicor was a fabless semiconductor company specializing in nonvolatile memory and power management ICs, acquired by Renesas Electronics in 2008. Its legacy products emphasize reliability, low power, and integration for industrial and communications infrastructure.

The X40430 family was designed to consolidate power supervision, reset control, and configuration storage into a single IC for space-constrained, high-reliability systems - targeting applications where supply rail integrity and firmware persistence are mission-critical.

FAQ

What is the factory-default power-on reset timeout for X40430V14I-A?

The X40430V14I-A ships with t_PURST set to 200ms (PUP1=0, PUP0=1). This delay ensures sufficient time for 5V/3.3V/1.8V rails and system oscillator to stabilize before releasing the active-HIGH RESET signal. The timeout is nonvolatile and can be reconfigured via the Control Register using the documented 3-step write sequence.

Does X40430V14I-A support reprogramming of its voltage trip thresholds in-circuit?

Yes, X40430V14I-A supports in-system reprogramming of V_TRIP1, V_TRIP2, and V_TRIP3 using a high-voltage pulse (V_P) applied to the WDO pin during an I²C write sequence. The procedure requires applying the target voltage to the respective MON pin (V_CC, V2MON, or V3MON) and issuing specific slave address/byte commands - fully detailed in the "VTRIPX Set/Reset Procedure" section of the datasheet.

How does the Fault Detection Register (FDR) in X40430V14I-A assist in failure analysis?

The FDR in X40430V14I-A provides volatile status bits (LV1F, LV2F, LV3F, WDF, MRF) that record the cause of the most recent reset event. After a reset, firmware reads address 0xFF to determine whether the event originated from V_CC brownout, secondary rail failure, watchdog timeout, or manual reset - enabling targeted diagnostics without external logic analyzers or oscilloscopes.

What is the maximum write endurance and data retention specification for the EEPROM in X40430V14I-A?

The EEPROM in X40430V14I-A is specified for ≥100,000 write/erase cycles and ≥100 years of data retention at +25°C, based on Xicor's Direct Write™ memory cell technology. These values are guaranteed across the full industrial temperature range (–40°C to +85°C) and do not degrade with extended operation - confirmed in accelerated life testing per JEDEC JESD22-A117.

Can X40430V14I-A monitor voltages below 1.8V, such as a 1.2V core rail?

No - the X40430V14I-A variant is factory-configured for 5V/3.3V/1.8V rails (V_TRIP1=4.55–4.65V, V_TRIP2=2.95–3.05V, V_TRIP3=1.65–1.75V). While V_TRIP3 can be reprogrammed downward, the datasheet does not validate operation below 1.65V. For 1.2V monitoring, X40435V14I-A (with V_TRIP3=0.95–1.05V) is the appropriate variant.

X40430V14I-A Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Multi-Voltage Supervisor

Number of Voltages Monitored:: 3

Voltage - Threshold:: 1.7V, 2.9V, 4.6V

Output:: Open Drain, Push-Pull

Reset:: Active High/Active Low

Reset Timeout:: Adjustable/Selectable

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

X40430V14I-A FAQ

1.How can I place an order for X40430V14I-A through Aetrix?

Please submit a Request for Quotation (RFQ) for X40430V14I-A 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 X40430V14I-A reliable?

The price and inventory of X40430V14I-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X40430V14I-A is usually 5 days.

3.What payment methods are accepted for X40430V14I-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X40430V14I-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for X40430V14I-A?

X40430V14I-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your X40430V14I-A 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 X40430V14I-A?

For technical support, including X40430V14I-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X40430V14I-A requirements.

6.How does Aetrix verify that X40430V14I-A is sourced from the original manufacturer or authorized distributors?

All X40430V14I-A 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 X40430V14I-A meets industry standards.

7.What is the process for return or replacement of X40430V14I-A?

All X40430V14I-A units undergo pre-shipment inspection (PSI). If there is an issue with X40430V14I-A, 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 X40430V14I-A part is unused and in its original packaging.

Return procedure for X40430V14I-A:

1.Submit a request within 90 days.

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

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