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Renesas X5165S8IZ-2.7A
- Part No.:
- X5165S8IZ-2.7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5165S8IZ-2.7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,297
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Product details
Overview
X5165S8IZ-2.7A from Intersil (now Renesas) is a CPU supervisor IC integrating power-on reset control, watchdog timer, supply voltage supervision, and 16Kbit SPI EEPROM in an 8-lead SOIC package. It provides active-low RESET output, operates from 2.7V to 5.5V, features programmable VTRIP threshold of 2.85–3.0V, and supports -40°C to +85°C industrial temperature range - used in embedded microcontroller systems requiring reliable power sequencing and nonvolatile configuration storage.
For engineers reviewing the X5165S8IZ-2.7A datasheet, X5165S8IZ-2.7A pinout, X5165S8IZ-2.7A application, or X5165S8IZ-2.7A equivalent, key selection criteria include its dual-function CS/WDI pin, reprogrammable reset threshold, 200ms power-up reset timeout, 16Kbit Block Lock™ EEPROM with 32-byte page write, and low standby current (<1µA with watchdog off).
Technical Context
The X5165S8IZ-2.7A implements a dedicated analog voltage monitor for VTRIP detection with 20mV hysteresis and asserts RESET/RESET down to VCC = 1V. Its watchdog timer uses nonvolatile WD0/WD1 bits to select fixed timeout intervals (200ms, 600ms, or 1.4s), independent of power cycling.
The integrated SPI EEPROM operates at up to 2MHz (modes 0,0 and 1,1), supports MSB-first serial protocol, includes Write Enable Latch (WEL) and Status Register with volatile WIP bit, and enables in-circuit programmable ROM mode via WPEN bit and WP pin control for secure status register locking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - supports wide-input industrial and battery-backed systems without external regulators. |
| VTRIP Threshold | 2.85V to 3.0V - factory-set trip point for reliable brownout detection in 3.3V systems. |
| Reset Timeout (tPURST) | 200ms typical - ensures stable power and oscillator startup before processor release. |
| Watchdog Timeout Options | 200ms / 600ms / 1.4s - selectable via nonvolatile WD0/WD1 bits; persists across power cycles. |
| EEPROM Capacity | 16Kbit (2K × 8) - organized as four 4K-bit blocks with configurable Block Lock™ protection. |
| Standby Current (WDT off) | <1µA at VCC = 5.5V - enables ultra-low-power operation in always-on monitoring applications. |
| SPI Clock Frequency | Up to 2MHz - compatible with standard microcontroller SPI peripherals without clock division. |
Pinout & Package
Package: 8-lead SOIC (RoHS-compliant, MDP0027 footprint), surface-mount, 150 mil width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS/WDI | Chip Select / Watchdog Input | Dual-function pin: LOW enables SPI interface; HIGH-to-LOW transition resets watchdog timer. |
| 2: SO | Serial Output | Push-pull data output; shifts out EEPROM or status register contents on SCK falling edge. |
| 3: WP | Write Protect | Hardware lock for Status Register writes when WPEN bit is set; enables in-circuit programmable ROM mode. |
| 4: VSS | Ground | Reference return path for all internal circuitry and I/O pins. |
| 5: SI | Serial Input | Latches opcode, address, and data on SCK rising edge; MSB-first protocol. |
| 6: SCK | Serial Clock | Master-controlled clock input; defines timing for SPI read/write operations. |
| 7: RESET/RESET | Active-Low Reset Output | Open-drain output asserted during power-up, brownout, or watchdog timeout; valid down to VCC = 1V. |
| 8: VCC | Supply Voltage | Primary power input; powers supervisor logic, EEPROM, and reset generator. |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Threshold voltage can be adjusted in-system using VP programming sequence - enables precision brownout tuning without component change. |
| Block Lock™ EEPROM Protection | Nonvolatile BL0/BL1 bits allow hardware-level protection of 0%, 25%, 50%, or 100% of 16Kbit array - prevents accidental firmware/config corruption. |
| Volatile Watchdog/Reset Flag | FLB bit in Status Register indicates cause of last reset (watchdog vs. low-VCC) - simplifies field failure diagnostics without external logging. |
| Self-timed EEPROM Writes | 5ms typical write cycle time per 32-byte page - eliminates need for external timing control or polling overhead. |
| Power-Fail Safe Operation | RESET remains active until VCC rises above VTRIP for 200ms and stabilizes - prevents spurious restarts during marginal supply recovery. |
Applications
| Industrial PLC Controller | Medical Diagnostic Device |
|---|---|
Use Scenario: Microcontroller-based PLC module operating in harsh factory environments with fluctuating 3.3V rail. IC Role / Device Role / Timing Role: CPU supervisor ensuring clean power-up sequencing, detecting brownouts below 2.85V, and storing calibration data in protected EEPROM. Use Value: Prevents corrupted state machine execution during voltage sags; retains critical sensor offset values across 100-year data retention spec. |
Use Scenario: Portable ultrasound unit with battery backup and safety-critical boot integrity requirements. IC Role / Device Role / Timing Role: Dual-role device providing 200ms power-on reset hold-off and watchdog supervision of real-time image processing firmware. Use Value: Guarantees safe initialization before transducer activation; enables post-reset root-cause analysis via volatile FLB flag. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: ANSI C12.20-compliant meter with tamper-resistant configuration storage and long-term reliability demands. IC Role / Device Role / Timing Role: Supervisor + EEPROM managing tariff tables, billing counters, and cryptographic keys with Block Lock™ protection. Use Value: Meets 100,000 write-cycle endurance and 100-year data retention for regulatory audit logs; prevents unauthorized parameter modification. |
Use Scenario: CAN-connected BCM operating across automotive temperature range (-40°C to +85°C) with 3.3V supply. IC Role / Device Role / Timing Role: Power monitor asserting RESET during cold-crank brownout (2.85V threshold) and storing door lock actuation history in EEPROM. Use Value: Maintains functional safety during engine start; enables diagnostic traceability without adding discrete EEPROM or reset IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPU supervisor with EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6365ESA+ | Single 3.0V reset threshold (non-programmable); 8Kbit EEPROM; no watchdog timer. | Lacks reprogrammable VTRIP and watchdog - suitable only for fixed-threshold, non-safety-critical monitoring. | Select when VTRIP precision and watchdog independence are unnecessary and board space is constrained. |
| STM8AF6266TAY | 8-bit automotive MCU with integrated 16Kbit EEPROM and software-configurable reset logic; requires firmware development. | Offers programmable reset behavior and enhanced diagnostics but adds BOM complexity and validation effort. | Choose when system already uses STM8 platform and firmware flexibility outweighs added design risk. |
Compared with MAX6365ESA+ and STM8AF6266TAY, the X5165S8IZ-2.7A delivers unique value through factory-trimmed yet reprogrammable VTRIP, hardware-enforced watchdog persistence, and zero-software EEPROM protection - enabling drop-in reliability upgrades without MCU firmware changes or layout revision.
Availability
X5165S8IZ-2.7A is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, smart metering, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for X5165S8IZ-2.7A 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
Renesas Electronics (formerly Intersil) is a global semiconductor leader specializing in microcontrollers, analog, power, and mixed-signal solutions for industrial, automotive, and infrastructure markets.
The X5165S8IZ-2.7A belongs to Renesas' legacy CPU supervisor family designed to consolidate reset, watchdog, voltage monitoring, and nonvolatile storage into single-chip solutions for resource-constrained embedded systems.
FAQ
What is the factory-programmed VTRIP voltage for X5165S8IZ-2.7A?
The X5165S8IZ-2.7A is factory-programmed with a VTRIP threshold of 2.85V to 3.0V, optimized for 3.3V supply monitoring. This range is specified in the Ordering Information table on Page 3 of FN8128 Rev 4.00 and remains stable over temperature and time unless reprogrammed using the VP-based sequence described in Section "VTRIP PROGRAMMING".
Does X5165S8IZ-2.7A support both active-low and active-high reset outputs?
No - the X5165S8IZ-2.7A provides only an active-low RESET/RESET output (pin 7). The "X5165" designation explicitly denotes active-low reset functionality; the active-high variant is the X5163 series (e.g., X5163S8IZ-2.7A), which shares identical packaging and EEPROM features but differs in reset polarity.
Can the watchdog timer timeout interval be changed dynamically during system operation?
Yes - the watchdog timeout interval (200ms, 600ms, or 1.4s) is controlled by nonvolatile WD0/WD1 bits in the Status Register and can be rewritten via the WRSR instruction at any time. Once written, the new setting persists across power cycles and does not require reinitialization after reset.
What is the maximum write endurance and data retention of the EEPROM in X5165S8IZ-2.7A?
The EEPROM in X5165S8IZ-2.7A guarantees minimum 100,000 write/erase cycles and 100 years of data retention at +25°C, as specified in the "SPI Serial Memory" section (Page 7) and confirmed in the Absolute Maximum Ratings summary. These values are measured per cell and apply across the full 16Kbit array.
Is X5165S8IZ-2.7A RoHS compliant and compatible with lead-free reflow soldering?
Yes - the X5165S8IZ-2.7A is RoHS compliant (Pb-free plus anneal) and qualified for lead-free reflow soldering per IPC/JEDEC J-STD-020. Its MDP0027 SOIC package meets moisture sensitivity level (MSL) requirements for peak reflow temperatures ≥260°C, as documented in the "Ordering Information" footnote on Page 3 of FN8128 Rev 4.00.
X5165S8IZ-2.7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.92V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
X5165S8IZ-2.7A FAQ
1.How can I place an order for X5165S8IZ-2.7A through Aetrix?
Please submit a Request for Quotation (RFQ) for X5165S8IZ-2.7A 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 X5165S8IZ-2.7A reliable?
The price and inventory of X5165S8IZ-2.7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X5165S8IZ-2.7A is usually 5 days.
3.What payment methods are accepted for X5165S8IZ-2.7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5165S8IZ-2.7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5165S8IZ-2.7A?
X5165S8IZ-2.7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5165S8IZ-2.7A 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 X5165S8IZ-2.7A?
For technical support, including X5165S8IZ-2.7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5165S8IZ-2.7A requirements.
6.How does Aetrix verify that X5165S8IZ-2.7A is sourced from the original manufacturer or authorized distributors?
All X5165S8IZ-2.7A 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 X5165S8IZ-2.7A meets industry standards.
7.What is the process for return or replacement of X5165S8IZ-2.7A?
All X5165S8IZ-2.7A units undergo pre-shipment inspection (PSI). If there is an issue with X5165S8IZ-2.7A, 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 X5165S8IZ-2.7A part is unused and in its original packaging.
Return procedure for X5165S8IZ-2.7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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