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Renesas X5323S8Z-2.7A
- Part No.:
- X5323S8Z-2.7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5323S8Z-2.7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,229
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Product details
Overview
X5323S8Z-2.7A from Intersil is a CPU supervisor IC integrating power-on reset control, watchdog timer, supply voltage supervision, and 32kbit SPI EEPROM in an 8-lead SOIC package. It operates from 2.7V to 5.5V, features a factory-programmed 2.85–3.0V VTRIP threshold, supports 2MHz SPI communication, and delivers <50µA standby current with watchdog enabled - used in embedded microcontroller systems requiring reliable brown-out protection and nonvolatile configuration storage.
For engineers reviewing the X5323S8Z-2.7A datasheet, X5323S8Z-2.7A pinout, X5323S8Z-2.7A application, or X5323S8Z-2.7A equivalent, this device serves as a drop-in replacement for legacy X5323PZ-2.7A in commercial-temperature industrial control, medical instrumentation, and smart sensor modules where low-voltage reset accuracy and integrated memory are critical.
Technical Context
The X5323S8Z-2.7A implements a dual-function CS/WDI pin for chip select and watchdog input, with a volatile flag bit distinguishing watchdog-triggered vs. low-voltage resets. Its reset logic asserts RESET/RESET active-low down to VCC = 1V and holds for 200ms after VCC stabilizes above the 2.92V typical trip point.
Internally, it combines a 32kbit (4k × 8) SPI EEPROM with Block Lock™ protection (0%, 25%, 50%, or 100% array lockable), self-timed 10ms write cycles, and programmable VTRIP via external 15–18V VP pulses on SCK/SI - all controlled through a standard SPI interface supporting modes 0,0 and 1,1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - supports single-supply operation across wide-input industrial and battery-powered systems. |
| VTRIP Threshold | 2.85V to 3.0V (typ. 2.92V) - factory-set low-voltage detection point enabling precise brown-out reset at 3V nominal rails. |
| Reset Output | Active-low open-drain RESET/RESET - valid down to VCC = 1V, held for 200ms after VCC stabilization. |
| Watchdog Timeout | Selectable: 200ms / 600ms / 1.4s - configured via nonvolatile WD0/WD1 bits; disabled by default (WD1=1, WD0=1). |
| SPI Interface | 2MHz max clock rate, modes 0,0 and 1,1 - compatible with standard microcontroller SPI peripherals without custom timing. |
| EEPROM Capacity | 32kbit (4096 × 8) - organized for byte/page writes; 32-byte page mode minimizes programming time per block. |
| Standby Current | <50µA (WDT on), <1µA (WDT off) - enables ultra-low-power operation in sleep-mode sensor nodes. |
Pinout & Package
Package: 8-lead SOIC (Pb-free, RoHS compliant), commercial temperature range (0°C to +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS/WDI | Chip Select / Watchdog Input | Active-low enable for SPI commands; falling edge restarts watchdog timer - dual-role pin reduces board routing complexity. |
| 2 - SO | Serial Output | Push-pull data output synchronized to SCK falling edge - eliminates need for external pull-up in most host interfaces. |
| 3 - WP | Write Protect | Hardware lock for status register writes when WPEN bit is set - prevents accidental corruption of watchdog or block-lock settings. |
| 4 - VSS | Ground | Reference return path for all digital and analog circuitry - must be low-impedance connection to minimize noise coupling. |
| 5 - VCC | Supply Voltage | Primary power input (2.7–5.5V); powers reset generator, watchdog, EEPROM, and SPI logic - decoupling capacitor required. |
| 6 - SCK | Serial Clock | Master-generated clock controlling SPI timing; rising edge latches SI data, falling edge drives SO data - defines maximum 2MHz throughput. |
| 7 - SI | Serial Input | Data/address/instruction input latched on SCK rising edge - MSB-first protocol ensures compatibility with common MCU SPI drivers. |
| 8 - RESET/RESET | Reset Output | Open-drain active-low reset signal asserted during power-up, brown-out, or watchdog timeout - requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Voltage threshold adjustable via 15–18V VP pulses on SCK/SI - enables field calibration for tighter tolerance than factory defaults. |
| Block Lock™ Protection | Nonvolatile BL0/BL1 bits allow locking 0%, 25%, 50%, or 100% of EEPROM - secures boot code, calibration data, or serial numbers against overwrite. |
| Volatile Reset Flag | Flag bit distinguishes watchdog timeout vs. low-voltage reset - allows firmware to initiate appropriate recovery routines without external monitoring. |
| Power-Up Reset Validity | RESET/RESET asserted down to VCC = 1V and held ≥200ms - guarantees processor remains held until stable clock and supply conditions are met. |
| Low-Power Watchdog Mode | <50µA standby current with watchdog enabled - supports always-on monitoring in energy-constrained IoT endpoints without compromising battery life. |
Applications
| Industrial PLC I/O Module | Medical Infusion Pump Controller |
|---|---|
|
Use Scenario: Real-time monitoring of motor driver faults and power rail integrity in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: CPU supervisor providing power-on reset, brown-out detection at 2.92V, and watchdog supervision of main MCU - ensures deterministic startup and fault containment. Use Value: Prevents erratic behavior during AC line sags by asserting RESET/RESET before VCC drops below 2.85V, while storing calibration coefficients in protected EEPROM pages. |
Use Scenario: Safety-critical delivery control in battery-operated infusion pumps requiring fail-safe shutdown on low battery or MCU hang. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors 3.3V system rail and provides 200ms watchdog timeout to detect firmware lockups - triggers immediate motor disable via RESET/RESET. Use Value: Factory-programmed 2.92V VTRIP aligns precisely with Li-ion battery discharge curve, enabling graceful shutdown before undervoltage damage occurs. |
| Smart Energy Meter | Automotive Body Control Module |
|
Use Scenario: Tamper-resistant metering in residential electricity meters with secure firmware update storage and power-fail logging. IC Role / Device Role / Timing Role: Integrates reset supervision and 32kbit EEPROM for storing tariff tables, event logs, and cryptographic keys - Block Lock™ protects critical sectors from malicious writes. Use Value: Self-timed 10ms EEPROM writes ensure data integrity during brief AC interruptions, while <1µA watchdog-off standby extends supercapacitor hold-up time. |
Use Scenario: Centralized lighting and window control in entry-level automotive platforms with cost-sensitive PCB space constraints. IC Role / Device Role / Timing Role: Combines reset generation, watchdog oversight, and nonvolatile parameter storage (e.g., user preferences, error counters) in one 8-pin SOIC - replaces discrete supervisor + EEPROM solution. Use Value: Reduces BOM count by two components and saves >15mm² PCB area versus separate ICs, while maintaining AEC-Q100-compliant reliability via Intersil's Pb-free process. |
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 |
|---|---|---|---|
| MAX6361KA29+T | Fixed 2.93V reset threshold; no VTRIP reprogramming; 16kbit EEPROM; 1.8–5.5V supply. | Lacks field-adjustable VTRIP and smaller memory - suitable only where calibration flexibility and storage depth are secondary. | Choose when absolute lowest cost and proven qualification history outweigh programmability needs. |
| STM8AF6266TCY | MCU-based solution with integrated supervisor and 64kbyte Flash; requires firmware development; no dedicated watchdog flag bit. | Provides full programmability but increases design complexity, validation effort, and BOM cost - not a drop-in hardware replacement. | Choose only for new designs needing custom reset sequencing or firmware-defined supervision logic. |
Compared with MAX6361KA29+T and STM8AF6266TCY, the X5323S8Z-2.7A uniquely balances factory-set precision (2.92V VTRIP), field-reprogrammability, and 32kbit protected EEPROM in a pin-compatible 8-SOIC footprint - making it optimal for cost-sensitive, high-volume replacements where reliability and configurability must coexist.
Availability
X5323S8Z-2.7A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical infusion pump controllers, smart energy meters, and automotive body control modules requiring stable component supply across multi-year production cycles.
Supply support for X5323S8Z-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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog and power management ICs for industrial, computing, and communications markets.
The X5323 family was designed to consolidate power supervision, watchdog safety, and nonvolatile storage into a single chip for microcontroller-based systems - targeting cost reduction, board space savings, and enhanced system reliability in commercial-temperature applications.
FAQ
What is the factory-default VTRIP voltage for X5323S8Z-2.7A?
The X5323S8Z-2.7A ships with a factory-programmed VTRIP range of 2.85V to 3.0V, with a typical value of 2.92V. This threshold is optimized for 3V nominal supply rails and is guaranteed over the commercial temperature range (0°C to +70°C). The value is stored in nonvolatile circuitry and remains stable across power cycles unless explicitly reprogrammed using the VP pulse sequence.
Does X5323S8Z-2.7A support both active-low and active-high reset outputs?
No, the X5323S8Z-2.7A provides only an active-low open-drain RESET/RESET output. It belongs to the X5323 series (not X5325), which is designated for active-low reset functionality. For active-high reset, the pin-compatible X5325S8Z-2.7A variant must be selected - it shares identical electrical specs and package but differs in reset polarity and internal logic mapping.
How is the watchdog timer enabled and configured on X5323S8Z-2.7A?
The watchdog timer on X5323S8Z-2.7A is disabled by default (WD1=1, WD0=1). To enable it, the system must issue a WRSR instruction to write WD0 and WD1 bits in the status register. Timeouts are fixed at 200ms (WD1=1, WD0=0), 600ms (WD1=0, WD0=1), or 1.4s (WD1=0, WD0=0). Once set, the timeout persists across power cycles unless rewritten - and can be locked using the WP pin and WPEN bit.
Can the EEPROM in X5323S8Z-2.7A be written during normal operation without halting the MCU?
Yes, the X5323S8Z-2.7A supports concurrent operation: the MCU can execute code while issuing SPI write commands to the EEPROM. However, during the self-timed 10ms internal write cycle, the WIP bit in the status register reads "1", and no further writes are accepted until completion. Reads remain fully functional throughout - enabling real-time status logging without system interruption.
What package and lead finish does X5323S8Z-2.7A use?
X5323S8Z-2.7A is supplied in an 8-lead SOIC package with 100% matte tin (e3) lead finish, RoHS compliant and qualified for Pb-free reflow soldering per IPC/JEDEC J-STD-020. It is rated for commercial temperature operation (0°C to +70°C) and carries the marking "X5323 ZAN" on the top surface - confirming its 2.7–5.5V VCC range and 2.85–3.0V VTRIP specification.
X5323S8Z-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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
X5323S8Z-2.7A FAQ
1.How can I place an order for X5323S8Z-2.7A through Aetrix?
Please submit a Request for Quotation (RFQ) for X5323S8Z-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 X5323S8Z-2.7A reliable?
The price and inventory of X5323S8Z-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 X5323S8Z-2.7A is usually 5 days.
3.What payment methods are accepted for X5323S8Z-2.7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5323S8Z-2.7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5323S8Z-2.7A?
X5323S8Z-2.7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5323S8Z-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 X5323S8Z-2.7A?
For technical support, including X5323S8Z-2.7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5323S8Z-2.7A requirements.
6.How does Aetrix verify that X5323S8Z-2.7A is sourced from the original manufacturer or authorized distributors?
All X5323S8Z-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 X5323S8Z-2.7A meets industry standards.
7.What is the process for return or replacement of X5323S8Z-2.7A?
All X5323S8Z-2.7A units undergo pre-shipment inspection (PSI). If there is an issue with X5323S8Z-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 X5323S8Z-2.7A part is unused and in its original packaging.
Return procedure for X5323S8Z-2.7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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