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Renesas X5329S8Z-2.7A
- Part No.:
- X5329S8Z-2.7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5329S8Z-2.7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,252
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Product details
Overview
X5329S8Z-2.7A from Renesas Electronics is an integrated CPU supervisor IC with 32Kbit SPI EEPROM, combining power-on reset control, supply voltage supervision, and block-lock protected nonvolatile memory in a single 8-lead SOIC package. It asserts an active-high RESET output when VCC drops below 2.85V, supports 2.7–5.5V operation, draws <1µA standby current, and features reprogrammable reset threshold for precision brownout detection in embedded microcontroller systems.
For engineers reviewing the X5329S8Z-2.7A datasheet, X5329S8Z-2.7A pinout, X5329S8Z-2.7A application, or X5329S8Z-2.7A equivalent, this device serves as a system-level power integrity and configuration storage solution-particularly where low-voltage operation, EEPROM write protection, and programmable VTRIP are required in space-constrained industrial or consumer designs.
Technical Context
The X5329S8Z-2.7A integrates a precision low-VCC detection circuit with 200ms reset timeout and 1V minimum valid reset assertion, enabling reliable boot sequencing across its 2.7–5.5V supply range. Its internal reset generator activates at ~1V during power-up and holds RESET high until VCC exceeds the factory-set 2.85–3.0V trip window and stabilizes for 200ms.
It implements a full SPI-0/1 interface (2MHz max) with MSB-first protocol, supporting page-write (32-byte), self-timed EEPROM writes (5ms typical), and volatile status register access-including WIP flag monitoring and block lock configuration (BL0/BL1) for protecting 0%, 25%, 50%, or 100% of the 32Kbit array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - enables direct compatibility with 3.3V and 5V logic rails without external regulation |
| VTRIP Threshold | 2.85V to 3.0V - factory-programmed reset activation point for brownout detection in low-voltage systems |
| RESET Polarity | Active HIGH - open-drain output asserted high during power-up and low-VCC conditions |
| EEPROM Size | 32Kbit (4K × 8) - sufficient for firmware versioning, calibration data, and user configuration storage |
| Standby Current | <1µA at VCC = 5.5V - minimizes battery drain in always-on or energy-sensitive applications |
| SPI Clock Max | 2MHz - supports fast read/write cycles while maintaining compatibility with legacy MCU SPI peripherals |
| Write Cycle Time | 5ms typical - enables rapid field updates without extended blocking of host processor resources |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, Pb-free with matte tin anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select Input | Active-low enable signal; must transition HIGH→LOW before any SPI command; places device in active mode |
| 2 SO | Serial Output | Push-pull data output; shifts out EEPROM or status register contents on SCK falling edge |
| 3 WP | Write Protect Input | Hardware lock for Status Register writes when WPEN bit is set; enables in-circuit programmable ROM mode |
| 4 VSS | Ground Reference | Primary return path for all internal circuits and I/O drivers; requires low-impedance PCB connection |
| 5 SI | Serial Input | MSB-first data input for opcodes, addresses, and EEPROM data; latched on SCK rising edge |
| 6 SCK | Serial Clock | Master-generated clock controlling timing of all SPI transfers; rising edge latches input, falling edge clocks output |
| 7 RESET/RESET | Reset Output | Open-drain active-HIGH reset signal; asserted during power-up and brownout; requires external pull-up |
| 8 VCC | Supply Voltage | Primary power input; powers supervisor logic, EEPROM core, and I/O buffers across 2.7–5.5V range |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Threshold voltage can be adjusted in-system using VP programming sequence-enables fine-tuning for board-specific voltage tolerances |
| Block Lock Protection | Nonvolatile BL0/BL1 bits allow hardware-enforced write protection of 0%, 25%, 50%, or 100% of EEPROM-prevents accidental corruption of critical configuration data |
| In-Circuit Programmable ROM Mode | WP pin + WPEN bit combination disables Status Register writes after manufacturing setup-supports secure OTP-like deployment |
| Low-Voltage Reset Validity | RESET remains valid down to VCC = 1V-ensures deterministic reset behavior even during deep brownout or battery sag |
| Direct Write™ EEPROM Cell | Guarantees ≥100,000 write cycles and ≥100-year data retention-suitable for long-life industrial and automotive applications |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data Retention |
|---|---|
|
Use Scenario: Storing sensor calibration coefficients, device serial numbers, and usage logs in a DIN-rail mounted programmable logic controller operating from 3.3V SMPS. IC Role / Device Role / Timing Role: CPU supervisor ensures clean boot under fluctuating 3.3V rail; EEPROM retains field-updated calibration values across power cycles. Use Value: Eliminates need for separate reset IC and serial EEPROM, reducing BOM count and PCB area while guaranteeing brownout-safe startup at 2.85V. |
Use Scenario: Maintaining patient-specific therapy parameters and regulatory audit logs in portable infusion pumps powered by Li-ion batteries (2.7–4.2V range). IC Role / Device Role / Timing Role: Active-HIGH RESET synchronizes microcontroller initialization with battery voltage stability; EEPROM stores tamper-proof calibration history. Use Value: Reprogrammable VTRIP allows precise match to battery discharge curve; Block Lock prevents overwrite of FDA-mandated calibration records. |
| Smart Meter Firmware Version Tracking | Automotive Body Control Module Settings |
|
Use Scenario: Recording firmware revision, meter ID, and tariff schedule updates in ANSI C12.22-compliant electricity meters with 3.3V auxiliary supply. IC Role / Device Role / Timing Role: Supervisor monitors 3.3V rail for grid-induced sags; EEPROM stores signed firmware metadata with write-protection enabled post-certification. Use Value: 32Kbit capacity accommodates cryptographic signatures and multi-version rollback data; <1µA ISB extends battery backup life beyond 10 years. |
Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in 12V automotive body control modules with local 3.3V LDO regulation. IC Role / Device Role / Timing Role: Resets microcontroller during ignition-on voltage ramp; EEPROM retains user preferences across vehicle shutdowns. Use Value: 2.7–5.5V operation covers cold-crank (≥2.7V) to load-dump (≤5.5V); WP pin hardwires protection during assembly to prevent field corruption. |
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 |
|---|---|---|---|
| MAX6369KA28+T | Fixed 2.83V reset threshold; no VTRIP reprogramming; 16Kbit EEPROM; 3.0–5.5V supply | Lacks in-system VTRIP adjustment and half the EEPROM capacity; suitable only where threshold tolerance is tight and storage needs are modest | Select when absolute threshold stability over temperature is prioritized over configurability and storage depth |
| STM8AF6266TCX | MCU-based solution with embedded 2Kbyte EEPROM and software-configurable reset logic; requires firmware development | Offers greater flexibility but adds design complexity, validation burden, and longer time-to-market | Choose only when system already uses STM8A platform and requires custom reset sequencing or additional GPIO resources |
Compared with MAX6369KA28+T and STM8AF6266TCX, the X5329S8Z-2.7A delivers unique value through field-adjustable brownout detection, larger 32Kbit EEPROM, and zero-software integration-making it optimal for cost-sensitive, high-reliability applications requiring guaranteed reset behavior and robust nonvolatile storage without MCU overhead.
Availability
X5329S8Z-2.7A is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, smart metering, and automotive body electronics requiring stable component supply across extended temperature and voltage ranges.
Supply support for X5329S8Z-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets-with emphasis on functional safety, reliability, and long-term product support.
The X5329S8Z-2.7A belongs to Renesas' CPU Supervisor with EEPROM family, designed specifically to consolidate power monitoring, reset generation, and secure configuration storage into a single chip for resource-constrained embedded systems.
FAQ
What is the reset polarity and output type of the X5329S8Z-2.7A?
The X5329S8Z-2.7A features an active-HIGH RESET output implemented as an open-drain driver. This means the RESET/RESET pin is pulled high externally via a pull-up resistor and actively driven LOW only during reset assertion-though the device itself asserts HIGH during power-up and brownout events. The X5329S8Z-2.7A's reset behavior is defined by its active-HIGH logic level, distinguishing it from the X5328 series which uses active-LOW reset.
Can the reset threshold voltage of the X5329S8Z-2.7A be modified after manufacturing?
Yes, the X5329S8Z-2.7A supports in-system reprogramming of its VTRIP threshold using a dedicated VP programming sequence applied to SCK and SI pins. This allows engineers to adjust the 2.85–3.0V factory setting to meet precise application requirements-such as matching a specific LDO dropout voltage or compensating for board-level tolerances-without requiring a new part number or redesign.
How does the X5329S8Z-2.7A protect EEPROM contents from unintended writes?
The X5329S8Z-2.7A employs three layered protections: (1) a volatile Write Enable Latch (WEL) that must be set via WREN instruction before any write; (2) nonvolatile Block Lock bits (BL0/BL1) to protect 25%, 50%, or 100% of the 32Kbit array; and (3) In-Circuit Programmable ROM mode activated by WP pin + WPEN bit, which permanently disables Status Register writes after manufacturing. All mechanisms operate independently and concurrently within the X5329S8Z-2.7A.
What is the maximum SPI clock frequency supported by the X5329S8Z-2.7A?
The X5329S8Z-2.7A supports SPI communication up to 2MHz across its full 2.7–5.5V operating range. It operates in SPI modes 0,0 and 1,1 (CPOL=0/1, CPHA=0/1), ensuring compatibility with most microcontroller SPI peripherals. Timing parameters-including tSU (50ns), tH (50ns), and tCYC (500ns)-are fully specified and tested per the FN8132 Rev 3.00 datasheet for the X5329S8Z-2.7A.
Does the X5329S8Z-2.7A include power-up reset functionality, and what is its timeout duration?
Yes, the X5329S8Z-2.7A incorporates a dedicated power-on reset circuit that asserts RESET/RESET at approximately 1V and holds it active for a nominal 200ms after VCC stabilizes above the VTRIP threshold. This tPURST parameter is guaranteed across 0°C to 70°C ambient and ensures the host microcontroller remains held in reset until both supply voltage and oscillator have settled-critical for deterministic boot behavior in the X5329S8Z-2.7A.
X5329S8Z-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:
- 2.93V
- 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-2.7A FAQ
1.How can I place an order for X5329S8Z-2.7A through Aetrix?
Please submit a Request for Quotation (RFQ) for X5329S8Z-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 X5329S8Z-2.7A reliable?
The price and inventory of X5329S8Z-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 X5329S8Z-2.7A is usually 5 days.
3.What payment methods are accepted for X5329S8Z-2.7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5329S8Z-2.7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5329S8Z-2.7A?
X5329S8Z-2.7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5329S8Z-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 X5329S8Z-2.7A?
For technical support, including X5329S8Z-2.7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5329S8Z-2.7A requirements.
6.How does Aetrix verify that X5329S8Z-2.7A is sourced from the original manufacturer or authorized distributors?
All X5329S8Z-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 X5329S8Z-2.7A meets industry standards.
7.What is the process for return or replacement of X5329S8Z-2.7A?
All X5329S8Z-2.7A units undergo pre-shipment inspection (PSI). If there is an issue with X5329S8Z-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 X5329S8Z-2.7A part is unused and in its original packaging.
Return procedure for X5329S8Z-2.7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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