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Renesas X5043S8-2.7T1
- Part No.:
- X5043S8-2.7T1
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5043S8-2.7T1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
X5043S8-2.7T1 from Intersil (now Renesas) is a CPU supervisor IC integrating power-on reset, watchdog timer, supply voltage supervision, and 4Kbit SPI EEPROM in an 8-lead SOIC package. It features 2.85V VTRIP threshold, active-low RESET output, 3.3MHz SPI interface, and block-lock EEPROM protection - deployed in industrial process controllers requiring reliable brownout recovery and nonvolatile configuration storage.
For engineers reviewing the X5043S8-2.7T1 datasheet, X5043S8-2.7T1 pinout, X5043S8-2.7T1 application, or X5043S8-2.7T1 equivalent, key selection criteria include VTRIP accuracy at 2.85V ±2.5%, watchdog timeout configurability (200ms/600ms/1.4s), EEPROM endurance (1M cycles), low standby current (<10µA with WDT off), and SOIC-8 compatibility with legacy board layouts.
Technical Context
The X5043S8-2.7T1 implements a dual-function CS/WDI pin for chip select and watchdog input, with internal reset timing governed by a 200ms release delay after VCC exceeds VTRIP. Its status register contains nonvolatile WD0/WD1 bits to configure watchdog timeout and BL0/BL1 bits to enable quarter/half/full EEPROM block lock protection.
Power-on reset activation occurs at VCC ≥ 1V, and RESET remains asserted until VCC stabilizes above 2.85V for 200ms. The SPI interface operates up to 3.3MHz with MSB-first protocol, supporting 16-byte page writes and automatic address increment during reads - all managed via WREN/WRSR/READ/WRITE opcodes without external address lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTRIP Threshold | 2.85V ±2.5% - precise brownout detection for 3.3V systems with guaranteed reset assertion below operating voltage |
| RESET Polarity | Active-low open-drain - compatible with standard microcontroller reset inputs and pull-up biasing |
| EEPROM Capacity | 4Kbit (512 × 8) - sufficient for bootloader parameters, calibration data, and device identity storage |
| Watchdog Timeout | Selectable: 200ms / 600ms / 1.4s - configurable via nonvolatile status register for varying firmware execution windows |
| SPI Clock Rate | 3.3MHz max - enables fast configuration read/write without burdening host MCU timing budgets |
| Standby Current | <10µA (WDT off) - extends battery life in portable instrumentation and remote sensors |
| Endurance | 1,000,000 write cycles - supports frequent field-updatable settings without wear-out risk |
Pinout & Package
Package: 8-lead SOIC (Small Outline Integrated Circuit), RoHS-compliant Pb-free plus anneal finish, JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS/WDI | Chip Select / Watchdog Input | Active-low enable for SPI commands; falling edge resets watchdog timer - dual-role pin reduces MCU GPIO count |
| 2: WP | Write Protect Input | Hardware-level EEPROM lock - LOW disables all nonvolatile writes, independent of software status register |
| 3: SO | Serial Output | Push-pull data output - eliminates need for external pull-up on SPI MISO line |
| 4: VSS | Ground Reference | Common return path for digital logic and reset circuitry - must be low-impedance for noise immunity |
| 5: VCC | Supply Voltage | 2.7–5.5V operation - supports both 3.3V and 5V systems without level-shifting |
| 6: SCK | Serial Clock Input | Edge-triggered SPI clock - rising edge latches SI, falling edge clocks SO |
| 7: SI | Serial Input | SPI MOSI input - receives opcodes, addresses, and write data with no external buffering |
| 8: RESET | Reset Output | Open-drain active-low signal - drives microcontroller reset with 200ms debounce and brownout hold |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP | Voltage threshold adjustable via SPI command sequence using VP = 15–18V on WP pin - enables field calibration without hardware change |
| Block Lock™ Protection | Configurable 1/4, 1/2, or full EEPROM array lock via status register - prevents accidental overwrite of critical firmware parameters |
| Direct Write™ EEPROM Cell | 1M write cycles and 100-year data retention - validated for industrial deployments with infrequent but mission-critical updates |
| Low-Voltage Reset Validity | RESET asserted down to VCC = 1V - ensures deterministic reset behavior even during deep brownout conditions |
| Write Enable Latch | WREN/WRDI opcodes required before memory writes - adds software-controlled write gating beyond hardware WP pin |
Applications
| Industrial Process Controller | Network Router |
|---|---|
Use Scenario: Embedded PLC managing sensor inputs, actuator outputs, and real-time control loops in factory automation. IC Role / Device Role / Timing Role: CPU supervisor providing power-on initialization, brownout recovery, and watchdog monitoring of main controller firmware. Use Value: Prevents erratic behavior during unstable mains voltage and ensures safe shutdown/restart when supply drops below 2.85V. | Use Scenario: Edge router storing MAC tables, routing configurations, and firmware update metadata across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration manager with integrated reset supervision for ARM-based network SoC. Use Value: Enables 1M-cycle EEPROM writes for dynamic QoS policy updates while guaranteeing system reset if boot code hangs. |
| Smart Energy Meter | Battery-Powered Sensor Node |
Use Scenario: ANSI C12.22-compliant meter logging kWh consumption, tariff schedules, and tamper events over 10+ years. IC Role / Device Role / Timing Role: Long-life data logger with voltage-monitored reset and protected EEPROM for regulatory compliance data. Use Value: Block-lock protection prevents unauthorized modification of billing registers; 100-year retention meets utility certification requirements. | Use Scenario: LoRaWAN node measuring temperature/humidity in remote agricultural sites powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-power supervisor maintaining RTC sync, storing calibration offsets, and triggering wake-on-event reset. Use Value: <10µA standby current with WDT disabled extends 10-year battery life; 2.85V VTRIP avoids false resets during cold-start voltage sag. |
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 |
|---|---|---|---|
| MAX6816EPA+ | Discrete supervisor + separate 25LC040 EEPROM; no integrated block lock or reprogrammable VTRIP | Requires two ICs and additional PCB area; lacks unified watchdog-EEPROM coordination | Choose only if existing design uses MAXIM analog supervisors and requires pin-compatible upgrade path |
| MCP9808-E/P | Temperature sensor with I²C interface - no reset, watchdog, or EEPROM functions | Not functionally comparable; serves entirely different sensing role | Not a valid alternative - excluded due to missing core supervisor functionality |
Compared with MAX6816EPA+, X5043S8-2.7T1 reduces BOM count by 1, eliminates inter-IC timing skew between reset and memory access, and provides field-adjustable VTRIP - critical for systems operating near voltage margins.
Availability
X5043S8-2.7T1 is available at Aetrix Electronics and suitable for industrial process control, network infrastructure, smart metering, and battery-powered IoT endpoints requiring stable component supply across extended product lifecycles.
Supply support for X5043S8-2.7T1 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 (acquired by Renesas Electronics in 2017) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, precision analog, and timing applications.
The X5043 family was designed specifically for embedded systems needing consolidated power supervision and nonvolatile storage - targeting cost-sensitive, space-constrained industrial and communications equipment where reliability under voltage stress is paramount.
FAQ
What is the VTRIP voltage for X5043S8-2.7T1 and how is it set?
The X5043S8-2.7T1 has a factory-programmed VTRIP of 2.85V ±2.5%. This threshold is set during manufacturing and remains stable over temperature and time. Unlike some variants, X5043S8-2.7T1 does not support in-field VTRIP reprogramming - its suffix "-2.7" denotes the 2.7–5.5V VCC range and fixed 2.85V trip point. For adjustable thresholds, consider X5043S8Z-2.7A variants with dedicated programming sequences.
Does X5043S8-2.7T1 support both active-low and active-high reset outputs?
No, X5043S8-2.7T1 provides only an active-low RESET output (open-drain). The "X5043" designation indicates active-low reset; "X5045" variants provide active-high RESET. The datasheet confirms RESET/RESET labeling for X5043 devices reflects the active-low signal, and no internal configuration changes the polarity. External inversion would require discrete components.
What is the maximum SPI clock frequency supported by X5043S8-2.7T1?
X5043S8-2.7T1 supports a maximum SPI clock frequency of 3.3MHz across its full 2.7–5.5V VCC range and 0°C to +70°C temperature grade. This is specified in the AC Electrical Characteristics table (Page 14) and verified under load with SO output drive capability. Exceeding 3.3MHz may cause setup/hold violations or incomplete opcode decoding.
How many watchdog timeout options does X5043S8-2.7T1 offer and how are they selected?
X5043S8-2.7T1 offers three watchdog timeout periods: 200ms, 600ms, and 1.4s - selected via nonvolatile WD0/WD1 bits in the status register. These bits are programmed using the WRSR instruction and persist across power cycles. Factory default is WD1=1, WD0=1 (watchdog disabled), but users can configure timeouts via SPI before deployment. No external components are needed.
Is X5043S8-2.7T1 RoHS compliant and what packaging format does "T1" indicate?
Yes, X5043S8-2.7T1 is RoHS compliant per Intersil's Pb-Free Plus Anneal specification, using 100% matte tin termination and lead-free molding compounds. The "T1" suffix denotes tape-and-reel packaging - standard for automated SMT assembly - with quantities typically supplied in 2,500-unit reels per JEDEC standard for SOIC-8 devices.
X5043S8-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
X5043S8-2.7T1 FAQ
1.How can I place an order for X5043S8-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X5043S8-2.7T1 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 X5043S8-2.7T1 reliable?
The price and inventory of X5043S8-2.7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X5043S8-2.7T1 is usually 5 days.
3.What payment methods are accepted for X5043S8-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5043S8-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5043S8-2.7T1?
X5043S8-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5043S8-2.7T1 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 X5043S8-2.7T1?
For technical support, including X5043S8-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5043S8-2.7T1 requirements.
6.How does Aetrix verify that X5043S8-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X5043S8-2.7T1 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 X5043S8-2.7T1 meets industry standards.
7.What is the process for return or replacement of X5043S8-2.7T1?
All X5043S8-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X5043S8-2.7T1, 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 X5043S8-2.7T1 part is unused and in its original packaging.
Return procedure for X5043S8-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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