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Renesas X5043P-2.7
- Part No.:
- X5043P-2.7
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X5043P-2.7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,867
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Product details
Overview
X5043P-2.7 from Intersil (now Renesas) is a CPU supervisor IC integrating power-on reset, watchdog timer, supply voltage supervision, and 4Kbit SPI EEPROM in a single 8-pin PDIP package. It provides active-low RESET assertion at 2.85–3.0V VTRIP threshold, supports 3.3MHz SPI interface, delivers 100,000 write cycles for EEPROM, and operates across 0°C to 70°C for industrial embedded systems requiring reliable system-level fault recovery.
For engineers reviewing the X5043P-2.7 datasheet, X5043P-2.7 pinout, X5043P-2.7 application, or X5043P-2.7 equivalent, key selection criteria include its programmable VTRIP voltage, block-lock EEPROM protection granularity, watchdog timeout configurability via status register, and compatibility with microcontrollers using standard SPI protocols without external timing components.
Technical Context
The X5043P-2.7 implements a dual-function supervisory architecture: analog voltage monitoring with hysteresis-based VTRIP detection and digital watchdog logic tied to CS/WDI pin transitions. Its reset circuit asserts RESET/RESET until VCC exceeds the programmed trip point for 200ms, while the watchdog timer uses nonvolatile WD0/WD1 bits to select 200ms, 600ms, or 1.4s timeout periods - all retained across power cycles.
EEPROM operation uses Intersil's Direct Write™ cell technology with 16-byte page writes and 5ms typical write cycle time. Block lock protection is controlled by BL0/BL1 bits in the status register, enabling selective write protection of 0%, 25%, 50%, or 100% of the 512×8-bit array - independent of WP pin state when WEL is set.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTRIP Threshold | 2.85–3.0V (factory-programmed; reprogrammable via VP=15–18V sequence) |
| Supply Voltage Range | 2.7–5.5V - enables direct use with 3.3V and 5V systems without level shifting |
| SPI Clock Rate | Up to 3.3MHz - supports high-speed configuration reads and fast parameter updates |
| EEPROM Endurance | 1,000,000 write cycles - ensures long-term reliability for frequently updated calibration or logging data |
| Watchdog Timeout Options | 200ms / 600ms / 1.4s / disabled - selectable via nonvolatile status register bits WD0/WD1 |
| Reset Pulse Width | 200ms nominal after VCC stabilization - guarantees sufficient time for oscillator startup and core initialization |
| Standby Current (WDT off) | <10µA at 5.5V - critical for battery-backed applications where quiescent power must be minimized |
Pinout & Package
Package: 8-lead PDIP (Plastic Dual In-line Package), RoHS-compliant Pb-free plus anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS/WDI | Chip Select Input / Watchdog Input | Active-low enable for SPI commands; falling edge resets watchdog timer; toggling required within timeout window to prevent reset assertion |
| 2: WP | Write Protect Input | Hardware-level write disable: LOW blocks all nonvolatile writes regardless of WEL or BL bits; HIGH enables full memory access when WEL is set |
| 3: SO | Serial Output | Push-pull output delivering read data on falling SCK edge; no external pull-up required for SPI bus termination |
| 4: VSS | Ground Reference | Primary return path for all internal circuits; must be connected to system ground plane with low-inductance path |
| 5: VCC | Supply Voltage | Power input for entire device (2.7–5.5V); also used as reference during VTRIP programming sequences |
| 6: SCK | Serial Clock Input | Edge-triggered clock controlling SPI timing; rising edge latches SI data, falling edge clocks SO data |
| 7: SI | Serial Input | Input for opcodes, addresses, and write data; sampled on rising SCK edge; requires clean signal integrity for reliable command decoding |
| 8: RESET/RESET | Active-Low Reset Output | Open-drain output asserted during power-up, brownout, or watchdog timeout; requires external pull-up to VCC for proper logic level |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Allows field adjustment of reset threshold using 15–18V VP on WP pin - eliminates need for BOM changes when fine-tuning brownout response |
| Block Lock™ Memory Protection | Four configurable protection levels (none, 25%, 50%, 100%) controlled by nonvolatile BL0/BL1 bits - prevents accidental overwrite of critical firmware parameters |
| Nonvolatile Watchdog Configuration | WD0/WD1 bits retain timeout setting across power cycles - ensures consistent watchdog behavior without host reinitialization |
| Direct Write™ EEPROM Cell | Guarantees 1M write cycles and 100-year data retention - suitable for lifetime logging in unattended infrastructure equipment |
| Dual Write Enable Mechanism | Combines software-controlled WREN latch and hardware WP pin - provides layered protection against unintended writes during debug or firmware update |
Applications
| Industrial Process Controllers | Network Routers & Switches |
|---|---|
|
Use Scenario: Monitoring PLC I/O modules during voltage sags or transient surges in factory automation lines. IC Role / Device Role / Timing Role: CPU supervisor asserting RESET/RESET within 500ns of VCC drop below 2.85V, holding processor in reset until stable supply returns for 200ms. Use Value: Prevents corrupted state machine transitions and ensures deterministic restart after brownout events without external RC timing networks. |
Use Scenario: Storing and protecting boot configuration, MAC address tables, and QoS policies in enterprise-grade Layer 2/Layer 3 switches. IC Role / Device Role / Timing Role: SPI EEPROM with block lock protecting 25% of array for immutable factory defaults while allowing runtime updates to remaining sectors. Use Value: Enables secure field upgrades without risk of overwriting critical identity or security keys stored in protected memory blocks. |
| Battery-Powered IoT Gateways | Medical Diagnostic Equipment |
|
Use Scenario: Maintaining real-time clock calibration, sensor offset values, and last-known network credentials during Li-ion battery discharge cycles. IC Role / Device Role / Timing Role: Low-power supervisor consuming <10µA standby current with watchdog disabled, retaining EEPROM data for >10 years at room temperature. Use Value: Eliminates need for supercapacitor backup or external FRAM, reducing bill-of-materials cost and PCB footprint in compact edge devices. |
Use Scenario: Ensuring fail-safe shutdown and parameter recovery in ultrasound imaging systems during unexpected AC line interruptions. IC Role / Device Role / Timing Role: Dual-role device providing both power-fail reset signaling and nonvolatile storage of transducer calibration coefficients with 1M-cycle endurance. Use Value: Meets IEC 62304 Class C software safety requirements by guaranteeing deterministic reset behavior and validated data integrity across 10,000+ operational cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPU supervisor with integrated EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP9701-E/P | Lacks integrated EEPROM; only provides analog temperature sensing + reset function | Cannot replace X5043P-2.7 where nonvolatile parameter storage is required | Select only if system already includes separate EEPROM and only needs voltage supervision |
| MAX6361LKA29+T | Fixed 2.93V reset threshold; no VTRIP reprogramming capability; no EEPROM | Supports basic reset and watchdog but offers no persistent configuration storage | Choose when design requires certified automotive-grade qualification (AEC-Q100) and minimal feature set suffices |
Compared with MCP9701-E/P and MAX6361LKA29+T, the X5043P-2.7 uniquely integrates programmable reset voltage, configurable watchdog, and high-endurance SPI EEPROM - eliminating three discrete components while enabling field-adjustable brownout response and secure parameter management in a single 8-pin PDIP package.
Availability
X5043P-2.7 is available at Aetrix Electronics and suitable for industrial process controllers, network routers & switches, battery-powered IoT gateways, and medical diagnostic equipment requiring stable component supply with guaranteed long-term availability.
Supply support for X5043P-2.7 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
Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X5043P-2.7 belongs to Intersil's CPU Supervisor family, engineered specifically for embedded systems needing coordinated power sequencing, fault detection, and nonvolatile configuration storage in space-constrained designs.
FAQ
What is the factory-default VTRIP voltage for X5043P-2.7?
The X5043P-2.7 ships with a factory-programmed VTRIP range of 2.85–3.0V, corresponding to the "-2.7A" suffix in the ordering code. This threshold is laser-trimmed during production and remains stable over temperature and time unless reprogrammed using the VP=15–18V method described in the FN8126 datasheet. The X5043P-2.7 maintains this setting across power cycles without host intervention.
Can X5043P-2.7 operate with a 3.3V-only supply?
Yes, the X5043P-2.7 supports 2.7–5.5V operation, making it fully compatible with 3.3V systems. Its 3.3MHz SPI interface operates reliably at 3.3V VCC, and the RESET/RESET output meets VOH1 specifications (VCC – 0.8V) under this condition. All DC and AC electrical parameters in the datasheet are validated across the full voltage range, including 3.3V operation.
How does the watchdog timer interact with the CS/WDI pin on X5043P-2.7?
The X5043P-2.7 watchdog timer monitors CS/WDI pin activity: a falling edge resets the timeout counter, and failure to toggle CS/WDI within the selected interval (200ms/600ms/1.4s) triggers RESET/RESET assertion. Unlike simple timers, this mechanism ties watchdog health directly to host SPI communication - ensuring both software liveliness and bus connectivity are verified before reset activation.
What EEPROM protection modes does X5043P-2.7 support?
The X5043P-2.7 supports four block lock protection levels via BL0/BL1 bits: none (00), upper quarter (01), upper half (10), or full array (11). Protection is enforced independently of WP pin state when the Write Enable Latch (WEL) is set. This allows flexible partitioning - for example, locking calibration data in the top 25% while permitting runtime updates to logging buffers in unprotected regions.
Is X5043P-2.7 pin-compatible with other members of the X5043/X5045 family?
Yes, all X5043 and X5045 variants in the same package type (e.g., 8-pin PDIP) share identical pinouts and electrical characteristics. The X5043P-2.7 uses the standard 8-pin SOIC/PDIP/MSOP pin configuration shown in Figure 5 of FN8126, enabling direct substitution with X5043S8Z-2.7A or X5043PIZ-2.7 in existing layouts - provided VTRIP and temperature range requirements align.
X5043P-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.62V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
X5043P-2.7 FAQ
1.How can I place an order for X5043P-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X5043P-2.7 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 X5043P-2.7 reliable?
The price and inventory of X5043P-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X5043P-2.7 is usually 5 days.
3.What payment methods are accepted for X5043P-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5043P-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5043P-2.7?
X5043P-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5043P-2.7 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 X5043P-2.7?
For technical support, including X5043P-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5043P-2.7 requirements.
6.How does Aetrix verify that X5043P-2.7 is sourced from the original manufacturer or authorized distributors?
All X5043P-2.7 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 X5043P-2.7 meets industry standards.
7.What is the process for return or replacement of X5043P-2.7?
All X5043P-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X5043P-2.7, 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 X5043P-2.7 part is unused and in its original packaging.
Return procedure for X5043P-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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