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Renesas X5329S8Z-4.5A
- Part No.:
- X5329S8Z-4.5A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5329S8Z-4.5A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,874
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Product details
Overview
X5329S8Z-4.5A from Renesas Electronics is a CPU supervisor IC integrating power-on reset control, supply voltage supervision, and 32Kbit SPI EEPROM in an 8-lead SOIC package. It asserts an active-high RESET output when VCC drops below 4.5–4.75 V, supports 2.7–5.5 V operation, consumes <1 µA standby current, and features reprogrammable VTRIP for precision brownout detection in microcontroller-based embedded systems.
For engineers reviewing the X5329S8Z-4.5A datasheet, X5329S8Z-4.5A pinout, X5329S8Z-4.5A application, or X5329S8Z-4.5A equivalent, this device serves as a system-level power integrity and nonvolatile configuration manager - critical for reliable boot sequencing, firmware parameter storage, and voltage-fail recovery in industrial controllers and IoT edge nodes.
Technical Context
The X5329S8Z-4.5A implements dual-function supervision: a power-on reset circuit activates RESET at ~1 V and holds it active for 200 ms after VCC stabilizes, while its low-VCC detector asserts RESET when VCC falls below the factory-set 4.5–4.75 V trip point and releases it only after VCC exceeds that threshold for 200 ms. The integrated SPI EEPROM operates at up to 2 MHz with page-write capability and Block Lock™ protection covering 0%, 25%, 50%, or 100% of the 32Kbit array.
Its SPI interface complies with modes 0,0 and 1,1, uses MSB-first data transfer, and requires WREN instruction before any write. The WP pin-when paired with the nonvolatile WPEN bit-enables in-circuit programmable ROM mode, locking status register writes until hardware intervention occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTRIP Range | 4.5 V to 4.75 V - precise brownout detection window for 5 V systems |
| RESET Polarity | Active HIGH - directly interfaces with microcontrollers requiring high-asserted reset input |
| EEPROM Size | 32 Kbit (4 KB) - stores boot parameters, calibration data, or device identity without external memory |
| Standby Current | <1 µA at VCC = 5.5 V - enables battery-backed operation for >10 years in low-power applications |
| SPI Clock Max | 2 MHz - supports fast configuration reads during boot without timing bottlenecks |
| Supply Range | 4.5 V to 5.5 V - compatible with regulated 5 V rails and tolerant of nominal 5 V ±10% variation |
| Write Cycle Time | 5 ms typical - enables rapid field updates of stored configuration or logging data |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, Pb-free plus anneal finish, moisture sensitivity level per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Enables SPI communication when LOW; places device in standby when HIGH |
| 2 - SO | Serial Output | Push-pull data output synchronized to falling SCK edge; high-impedance when CS HIGH |
| 3 - WP | Write Protect Input | Hardware lock for Status Register writes when WPEN = 1; enables in-circuit ROM mode |
| 4 - VSS | Ground Reference | Primary return path for all internal circuits and I/O drivers |
| 5 - SI | Serial Input | Latches opcode/address/data on rising SCK edge; MSB-first protocol |
| 6 - SCK | Serial Clock | Controls SPI timing; rising edge latches inputs, falling edge clocks outputs |
| 7 - RESET/RESET | Reset Output | Open-drain active-HIGH reset signal asserted below VTRIP or during power-up |
| 8 - VCC | Supply Voltage | Power input for both supervisor logic and EEPROM; supports 4.5–5.5 V operation |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Allows field adjustment of reset threshold voltage using VP programming pulses on SCK/SI - eliminates need for BOM changes when fine-tuning brownout behavior |
| Block Lock™ Protection | Nonvolatile BL0/BL1 bits enable selective write-protection of 0%, 25%, 50%, or 100% of EEPROM - prevents accidental corruption of critical firmware parameters |
| Power-Up Reset Timing | Guaranteed 200 ms minimum RESET assertion after VCC stabilization - ensures oscillator and power rail readiness before MCU execution |
| Low-Voltage Validity | RESET remains valid down to VCC = 1 V - provides robust fail-safe signaling even during deep brownout conditions |
| Direct Write™ EEPROM Cell | 100,000 write cycles endurance and 100-year data retention - suitable for long-life industrial deployments with infrequent but critical updates |
Applications
| Industrial PLC Controller | Medical Diagnostic Device |
|---|---|
Use Scenario: Monitors 5 V system rail in a programmable logic controller housing multiple I/O modules and real-time Ethernet interfaces. IC Role / Device Role / Timing Role: Provides power-on reset coordination and stores calibrated sensor offsets, module IDs, and firmware version stamps in protected EEPROM blocks. Use Value: Eliminates external reset IC + discrete EEPROM, reducing BOM count by two components while guaranteeing deterministic boot timing under fluctuating line voltage. | Use Scenario: Embedded in a portable ultrasound imaging unit powered by rechargeable Li-ion batteries with variable discharge profiles. IC Role / Device Role / Timing Role: Detects brownout events during battery sag and triggers controlled shutdown; retains last-calibrated transducer settings and user preferences across power cycles. Use Value: Enables safe power-down sequence initiation at precisely 4.55 V (within 4.5–4.75 V range), preventing corrupted image buffers or inconsistent probe calibration. |
| Smart Energy Meter | Automotive Telematics Gateway |
Use Scenario: Installed in ANSI C12.20-certified electricity meters operating on auxiliary 5 V supplies derived from line sensing. IC Role / Device Role / Timing Role: Supervises metering SoC power domain and stores tamper logs, tariff schedules, and cryptographic keys in Block Lock™-protected EEPROM sectors. Use Value: Prevents unauthorized EEPROM writes via WP pin + WPEN bit lock - satisfies secure storage requirements for revenue-grade metering applications. | Use Scenario: Integrated into a CAN-FD gateway module managing OTA firmware updates and vehicle diagnostics over cellular backhaul. IC Role / Device Role / Timing Role: Ensures clean reset of application processor during ignition cycling; stores modem credentials, SIM binding data, and update rollback signatures. Use Value: Delivers guaranteed 200 ms reset hold time after 12 V-to-5 V regulator stabilization - avoids race conditions between bootloader initialization and CAN transceiver wake-up. |
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 |
|---|---|---|---|
| MAX6361KA29+T | Fixed 2.93 V reset threshold; no VTRIP reprogramming; 16 Kbit EEPROM; 3.0–5.5 V supply | Lacks adjustable trip point and half-size memory - suitable only for fixed-threshold 3.3 V designs | Select when VTRIP tuning is unnecessary and EEPROM capacity ≤16 Kbit suffices |
| STM8AF6266TCY | MCU with embedded 2 Kbyte EEPROM and reset supervisor; requires external firmware development; 2.95–5.5 V | Integrates processing capability but adds software validation burden and lacks dedicated supervisor timing guarantees | Select when system requires local decision-making (e.g., adaptive reset delay) and design team owns firmware stack |
Compared with MAX6361KA29+T and STM8AF6266TCY, the X5329S8Z-4.5A delivers application-specific precision (reprogrammable 4.5–4.75 V trip), larger 32 Kbit EEPROM, and guaranteed 200 ms reset timeout - making it optimal for 5 V industrial systems where deterministic supervision and field-configurable brownout response are mandatory.
Availability
X5329S8Z-4.5A is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic devices, smart energy meters, automotive telematics gateways, and IoT edge nodes requiring stable component supply across extended temperature and lifecycle windows.
Supply support for X5329S8Z-4.5A 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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.
The X5329S8Z-4.5A belongs to Renesas' CPU Supervisor with EEPROM product line, designed specifically to consolidate power monitoring, reset generation, and nonvolatile configuration storage into a single die - targeting cost-sensitive, space-constrained embedded systems demanding high reliability and field-programmable supervision thresholds.
FAQ
What is the reset polarity and assertion condition for the X5329S8Z-4.5A?
The X5329S8Z-4.5A features an active-HIGH RESET output that asserts when VCC falls below the programmed 4.5–4.75 V trip point or during power-up. It remains asserted until VCC rises above the trip threshold and stabilizes for 200 ms. This behavior is confirmed in the FN8132 datasheet Section "Principles of Operation" and Table on Page 14 specifying VTRIP and tPURST.
Can the reset voltage threshold of the X5329S8Z-4.5A be modified after manufacturing?
Yes, the X5329S8Z-4.5A supports field reprogramming of its VTRIP voltage using a defined VP pulse sequence applied to SCK and SI pins while CS and WP are held HIGH. The procedure allows raising the trip point within the 1.7–5.0 V range and is documented in Figures 1 and 3 of the FN8132 datasheet.
How much EEPROM memory does the X5329S8Z-4.5A provide, and what protection mechanisms are available?
The X5329S8Z-4.5A integrates 32 Kbit (4 KB) of SPI EEPROM with Block Lock™ protection. Users can protect 0%, 25%, 50%, or 100% of the array via nonvolatile BL0/BL1 bits in the Status Register, and further secure Status Register writes using the WP pin combined with the WPEN bit - enabling in-circuit programmable ROM mode.
What is the maximum SPI clock frequency supported by the X5329S8Z-4.5A, and which modes are compatible?
The X5329S8Z-4.5A supports SPI clock frequencies up to 2 MHz and operates in SPI modes 0,0 and 1,1. Data is transferred MSB-first, with SI latching on the rising SCK edge and SO driving on the falling SCK edge. These timing characteristics are specified in the "A.C. CHARACTERISTICS" table on Page 12 of the FN8132 datasheet.
Does the X5329S8Z-4.5A meet RoHS compliance requirements, and what is its package outline?
Yes, the X5329S8Z-4.5A is RoHS-compliant with Pb-free plus anneal termination (e3 finish), per Notes 2 and 3 in the Ordering Information table. Its package is an 8-lead narrow-body SOIC (M8.15E), with dimensions and land pattern detailed on Page 18 of the FN8132 datasheet.
X5329S8Z-4.5A 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:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
X5329S8Z-4.5A FAQ
1.How can I place an order for X5329S8Z-4.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for X5329S8Z-4.5A 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 X5329S8Z-4.5A reliable?
The price and inventory of X5329S8Z-4.5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X5329S8Z-4.5A is usually 5 days.
3.What payment methods are accepted for X5329S8Z-4.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5329S8Z-4.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5329S8Z-4.5A?
X5329S8Z-4.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5329S8Z-4.5A 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 X5329S8Z-4.5A?
For technical support, including X5329S8Z-4.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5329S8Z-4.5A requirements.
6.How does Aetrix verify that X5329S8Z-4.5A is sourced from the original manufacturer or authorized distributors?
All X5329S8Z-4.5A 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 X5329S8Z-4.5A meets industry standards.
7.What is the process for return or replacement of X5329S8Z-4.5A?
All X5329S8Z-4.5A units undergo pre-shipment inspection (PSI). If there is an issue with X5329S8Z-4.5A, 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 X5329S8Z-4.5A part is unused and in its original packaging.
Return procedure for X5329S8Z-4.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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