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Renesas X5045M8IZ-2.7
- Part No.:
- X5045M8IZ-2.7
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X5045M8IZ-2.7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,038
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Product details
Overview
X5045M8IZ-2.7 from Intersil (now Renesas) is a CPU supervisor IC integrating power-on reset, watchdog timer, supply voltage supervision, and 4K-bit SPI EEPROM in an 8-lead MSOP package. It features a 2.63V reset threshold, 200ms reset timeout, and operates across –40°C to +85°C for industrial embedded systems requiring reliable brownout protection and nonvolatile configuration storage.
For engineers reviewing the X5045M8IZ-2.7 datasheet, X5045M8IZ-2.7 pinout, X5045M8IZ-2.7 application, or X5045M8IZ-2.7 equivalent, key selection considerations include its reprogrammable VTRIP voltage, block-lock EEPROM protection, active-low RESET output with 1V validity, and compatibility with 3.3MHz SPI interfaces in space-constrained industrial controllers.
Technical Context
The X5045M8IZ-2.7 implements a dual-function supervisory architecture: analog voltage monitoring with hysteresis-based VTRIP detection and digital watchdog timing controlled by nonvolatile WD0/WD1 bits in the status register. Its reset assertion logic combines power-on reset (tPURST = 200ms typ.) and low-VCC detection (VTRIP = 2.63V ±2.5%), both holding RESET active until VCC exceeds trip point for ≥200ms.
EEPROM operation uses Intersil's Direct Write™ cell technology with 1M write endurance and 100-year data retention. The SPI interface supports 16-byte page writes at up to 3.3MHz, with WREN/WRSR/READ/READ instructions enabling full control of block lock (BL0/BL1), watchdog timeout (1.4s/600ms/200ms/off), and status reporting via RDSR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTRIP Threshold | 2.63V ±2.5% - ensures system reset during brownout below nominal 2.7V supply |
| Reset Timeout (tPURST) | 200ms typical - guarantees stable power and oscillator startup before processor release |
| Watchdog Timeout | Selectable 200ms/600ms/1.4s or disabled - provides configurable firmware fault recovery |
| EEPROM Capacity | 4K-bit (512 × 8) - stores critical calibration, configuration, or event-log data with block-lock protection |
| SPI Clock Rate | 3.3MHz max - enables fast parameter updates without slowing host microcontroller bus |
| Standby Current | <10µA (WDT off) or <50µA (WDT on) - extends battery life in portable or energy-sensitive designs |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including process control and remote telemetry |
Pinout & Package
Package: 8-lead MSOP (3.0mm × 3.0mm × 1.0mm height), RoHS-compliant Pb-free plus anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS/WDI | Chip Select / Watchdog Input | Active-low enable for SPI commands; falling edge resets watchdog timer |
| 2 WP | Write Protect Input | Hardware lock: LOW disables all nonvolatile writes regardless of WREN state |
| 3 SO | Serial Output | Push-pull data output; shifts read data on SCK falling edge |
| 4 VSS | Ground | Reference return path for all internal circuits and I/O |
| 5 VCC | Supply Voltage | 2.7V–5.5V input powering supervisor logic and EEPROM array |
| 6 SCK | Serial Clock Input | Controls SPI timing; latches SI on rising edge, drives SO on falling edge |
| 7 SI | Serial Input | Receives opcodes, addresses, and write data on SCK rising edge |
| 8 RESET/RESET | Active-Low Reset Output | Open-drain output asserted during power-up, brownout, or watchdog timeout; valid down to VCC = 1V |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Voltage threshold adjustable via SPI command sequence using VP = 15–18V on WP pin - enables precise brownout tuning without hardware change |
| Block Lock™ Protection | Nonvolatile BL0/BL1 bits allow selective write-protection of 0%, 25%, 50%, or 100% of EEPROM - prevents accidental corruption of critical firmware parameters |
| Direct Write™ EEPROM | 1M write cycles minimum endurance and 100-year data retention - suitable for long-life industrial deployments with frequent logging |
| Dual-Mode Reset Output | RESET/RESET asserts on both power-up (tPURST) and VCC drop below VTRIP - eliminates need for external reset IC in compact designs |
| Inadvertent Write Prevention | Four-layer protection: WREN latch, CS high-to-low transition requirement, WP pin, and status register lock - reduces field failure risk from noise or software glitches |
Applications
| Industrial Process Controller | Smart Energy Meter |
|---|---|
Use Scenario: Embedded PLC monitors sensor inputs and controls actuators in factory automation. IC Role / Device Role / Timing Role: X5045M8IZ-2.7 provides brownout reset, watchdog supervision, and stores calibration coefficients and fault logs in EEPROM. Use Value: Ensures deterministic restart after voltage sag and preserves operational history even during extended power loss. | Use Scenario: Utility-grade meter records kWh consumption, tariff schedules, and tamper events over 10+ years. IC Role / Device Role / Timing Role: X5045M8IZ-2.7 acts as secure configuration store and power-fail supervisor, with block-lock protecting tariff tables. Use Value: 1M write endurance and 100-year retention guarantee accurate billing data integrity across product lifetime. |
| Medical Diagnostic Handheld | Remote Telemetry Gateway |
Use Scenario: Portable ultrasound or ECG device operates from rechargeable Li-ion battery with variable voltage discharge profile. IC Role / Device Role / Timing Role: X5045M8IZ-2.7 monitors 2.7–4.2V battery range, triggers reset at 2.63V, and stores patient session metadata. Use Value: Prevents corrupted measurements during low-battery operation while maintaining HIPAA-compliant audit trail. | Use Scenario: Cellular-connected gateway collects sensor data from oil-field equipment in harsh outdoor environments. IC Role / Device Role / Timing Role: X5045M8IZ-2.7 supervises 3.3V rail, detects brownouts caused by solar charging fluctuations, and logs communication failures. Use Value: –40°C to +85°C rating and robust EEPROM ensure reliable operation in uncontrolled enclosures with wide thermal swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPU supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361KA29+T | Fixed 2.93V reset threshold; no EEPROM; only watchdog and POR | Lacks nonvolatile memory - requires external SPI EEPROM for configuration storage | Choose when memory integration is unnecessary and cost reduction is prioritized over board space savings |
| STM802LSD-26F | 2.63V reset, -40°C to +85°C, but no watchdog timer or EEPROM | Supervisory-only function - cannot replace X5045M8IZ-2.7's combined reset/watchdog/EEPROM capability | Select only if system already implements separate watchdog and EEPROM, and only basic reset supervision is needed |
Compared with MAX6361KA29+T and STM802LSD-26F, the X5045M8IZ-2.7 uniquely integrates three functions in one die - reducing BOM count, PCB area, and qualification effort - while offering field-programmable VTRIP and block-lock EEPROM essential for industrial firmware resilience.
Availability
X5045M8IZ-2.7 is available at Aetrix Electronics and suitable for industrial process controllers, smart energy meters, medical handhelds, and remote telemetry gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X5045M8IZ-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
Renesas Electronics (formerly Intersil) is a global semiconductor leader specializing in microcontrollers, analog, power management, and timing solutions for industrial, automotive, and infrastructure markets.
The X5045 family was designed to consolidate power supervision, watchdog safety, and nonvolatile storage into a single IC - targeting space-constrained, reliability-critical embedded systems where board real estate and firmware robustness are paramount.
FAQ
What is the exact reset threshold voltage for X5045M8IZ-2.7?
The X5045M8IZ-2.7 has a factory-set VTRIP of 2.63V ±2.5%, corresponding to the "-2.7" suffix per the ordering table. This threshold is reprogrammable via SPI using a 15–18V pulse on the WP pin, allowing field adjustment for tighter voltage margin requirements in the target application.
Does X5045M8IZ-2.7 support both active-high and active-low reset outputs?
No - X5045M8IZ-2.7 provides only an active-low open-drain RESET output. The "X5045" designation indicates active-low reset; the "X5043" variant offers active-high. Both share identical supervision, watchdog, and EEPROM functionality, but reset polarity is fixed per part number.
Can the EEPROM in X5045M8IZ-2.7 be used independently of the supervisor functions?
Yes - the 4K-bit SPI EEPROM in X5045M8IZ-2.7 operates fully independently. It can be read/written using standard SPI READ/WRITE commands regardless of reset or watchdog state, provided CS is asserted and the WREN latch is set. Block lock protection applies only to write operations.
What is the maximum clock frequency supported by X5045M8IZ-2.7's SPI interface?
The X5045M8IZ-2.7 supports SPI clock frequencies up to 3.3MHz across its full 2.7V–5.5V VCC range. This allows high-speed parameter updates without constraining host MCU SPI peripheral configuration, and is validated per AC Electrical Specifications on page 14 of FN8126 Rev 3.00.
Is X5045M8IZ-2.7 pin-compatible with other packages in the X5045 family?
Yes - the 8-lead MSOP (X5045M8IZ-2.7), 8-lead SOIC (X5045S8IZ-2.7), and 8-lead PDIP (X5045PIZ-2.7) variants share identical pinout and electrical behavior. Only mechanical footprint differs; no schematic or layout changes are required when migrating between these packages for the same -2.7 VTRIP version.
X5045M8IZ-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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 High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
X5045M8IZ-2.7 FAQ
1.How can I place an order for X5045M8IZ-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X5045M8IZ-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 X5045M8IZ-2.7 reliable?
The price and inventory of X5045M8IZ-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 X5045M8IZ-2.7 is usually 5 days.
3.What payment methods are accepted for X5045M8IZ-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5045M8IZ-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5045M8IZ-2.7?
X5045M8IZ-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5045M8IZ-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 X5045M8IZ-2.7?
For technical support, including X5045M8IZ-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5045M8IZ-2.7 requirements.
6.How does Aetrix verify that X5045M8IZ-2.7 is sourced from the original manufacturer or authorized distributors?
All X5045M8IZ-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 X5045M8IZ-2.7 meets industry standards.
7.What is the process for return or replacement of X5045M8IZ-2.7?
All X5045M8IZ-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X5045M8IZ-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 X5045M8IZ-2.7 part is unused and in its original packaging.
Return procedure for X5045M8IZ-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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