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Renesas X5163S8IZ-4.5A
- Part No.:
- X5163S8IZ-4.5A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X5163S8IZ-4.5A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,747
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Product details
Overview
X5163S8IZ-4.5A from Intersil (now Renesas) is a CPU supervisor IC integrating power-on reset control, watchdog timer, supply voltage supervision, and 16Kbit SPI EEPROM in a single 8-lead SOIC package. It provides active-low reset assertion at 4.5V VTRIP with ±0.125V hysteresis, supports 2MHz SPI interface, and operates across –40°C to +85°C. Used in embedded microcontroller systems requiring reliable power sequencing and nonvolatile configuration storage.
For engineers reviewing the X5163S8IZ-4.5A datasheet, X5163S8IZ-4.5A pinout, X5163S8IZ-4.5A application, or X5163S8IZ-4.5A equivalent, key selection criteria include its programmable 4.5–4.75V reset threshold, 200ms power-up reset timeout, 200ms minimum reset hold time after VCC recovery, 16Kbit EEPROM with Block Lock™ protection, and watchdog timeout options of 200ms/600ms/1.4s.
Technical Context
The X5163S8IZ-4.5A implements a dual-function CS/WDI pin for chip select and watchdog input, with reset assertion triggered by either VCC falling below 4.5V or watchdog timeout. Its internal voltage reference enables precise low-VCC detection down to 1V operation, and the reset output remains valid through brownout conditions.
It features a self-timed EEPROM write cycle (5ms typical), 32-byte page write mode, and SPI Mode 0/3 compatibility. The Status Register includes volatile WIP and flag bits plus nonvolatile WD0/WD1, BL0/BL1, and WPEN bits-enabling configurable watchdog timing, block-level memory protection, and in-circuit programmable ROM mode via WP pin control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTRIP Threshold | 4.5V nominal, 4.5–4.75V range; ensures system reset before microcontroller enters unstable operating region under overvoltage drift. |
| Reset Timeout (tPURST) | 200ms typical; guarantees stable power and oscillator startup before processor release. |
| Watchdog Timeout Options | 200ms / 600ms / 1.4s (WD1/WD0 configurable); allows tuning to firmware execution cycles without hardware change. |
| EEPROM Capacity & Endurance | 16Kbit (2K × 8), 100,000 write cycles; sufficient for bootloader parameters, calibration data, and field-upgrade metadata. |
| Supply Range | 4.5V to 5.5V; matches standard 5V logic rails and avoids regulator headroom issues in industrial 5V systems. |
| Standby Current (WDT ON) | <50µA max at 5.5V; enables battery-backed operation for >10-year retention in always-on monitoring nodes. |
| SPI Clock Frequency | Up to 2MHz; compatible with mid-speed MCU peripherals without requiring clock dividers or timing constraints. |
Pinout & Package
Package: 8-lead SOIC (RoHS-compliant, MDP0027 footprint), –40°C to +85°C industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS/WDI | Chip Select Input / Watchdog Input | Active-low enable for SPI commands; falling edge resets watchdog timer; must toggle within timeout period to prevent reset assertion. |
| 2: SO | Serial Output | Push-pull data output; shifts out EEPROM or status register contents on SCK falling edge; high-impedance when CS high. |
| 3: WP | Write Protect | Hardware lock for Status Register writes when WPEN bit = 1; enables in-circuit programmable ROM mode for factory configuration lockdown. |
| 4: VSS | Ground | Reference return path for all analog and digital circuitry; requires low-impedance connection to minimize noise coupling into reset threshold comparator. |
| 5: SI | Serial Input | MSB-first data input for opcodes, addresses, and EEPROM data; latched on SCK rising edge; must meet 50ns setup/hold timing. |
| 6: SCK | Serial Clock | Master-generated clock controlling SPI timing; rising edge latches SI, falling edge drives SO; supports 0/3 modes up to 2MHz. |
| 7: RESET/RESET | Active-Low Reset Output | Open-drain output asserted when VCC < 4.5V or watchdog expires; holds low for 200ms after VCC recovery; valid down to VCC = 1V. |
| 8: VCC | Supply Voltage | 4.5–5.5V input powering all functions; supplies internal voltage reference, EEPROM charge pump, and reset comparator; decoupling capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Reprogrammable VTRIP threshold | Field-adjustable reset voltage (e.g., 4.5V → 4.6V) using VP programming sequence-enables precision brownout margin tuning without component change. |
| Block Lock™ EEPROM protection | Selective write-lock of 0%, 25%, 50%, or 100% of 16Kbit array via BL0/BL1 bits-prevents accidental corruption of critical boot code or calibration tables. |
| Volatile watchdog/reset flag | Flag bit distinguishes watchdog timeout reset from low-VCC reset-enables firmware diagnostics and targeted recovery routines. |
| Self-timed EEPROM write | 5ms typical internal write cycle with no external timing control-eliminates need for software delay loops or busy-wait polling. |
| Power-up reset at 1V | Asserts RESET/RESET as soon as VCC reaches 1V-ensures deterministic initialization even during slow-ramp or battery-depleted power-up scenarios. |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
|
Use Scenario: Microcontroller-based motion control with real-time safety monitoring and parameter persistence. IC Role / Device Role / Timing Role: Supervisor IC providing power-on reset, brownout detection, and watchdog supervision; EEPROM stores motor calibration coefficients and usage logs. Use Value: Prevents erratic actuator behavior during undervoltage events; enables field recalibration without reprogramming; 100-year data retention ensures audit trail integrity. |
Use Scenario: Battery-powered infusion device requiring fail-safe delivery control and regulatory-compliant event logging. IC Role / Device Role / Timing Role: Dual-role supervisor: resets MCU on power anomaly and safeguards EEPROM-stored dose history and error codes. Use Value: Meets IEC 62304 Class C requirements for reset reliability; Block Lock™ prevents tampering with therapy records; <50µA standby current extends battery life. |
| Automotive Body Control Module | Smart Energy Meter |
|
Use Scenario: CAN-connected BCM managing door locks, lighting, and diagnostics in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset if battery drops below 4.5V during cranking; EEPROM stores fault codes and configuration profiles. Use Value: Avoids MCU lockup during engine start; programmable VTRIP accommodates aging battery voltage sag; -40°C to +85°C rating ensures under-hood operation. |
Use Scenario: Revenue-grade meter with tamper detection, tariff scheduling, and firmware update storage. IC Role / Device Role / Timing Role: Supervisor ensuring clean MCU boot after power interruption; EEPROM retains billing data, cryptographic keys, and calibration offsets. Use Value: 100,000 write cycles support daily log updates for >27 years; reset valid to 1V prevents data loss during brief grid dips; RoHS-compliant packaging meets utility procurement specs. |
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 2.93V reset threshold; no VTRIP programmability; 16Kbit EEPROM; same 8-SOIC package. | Lacks field-adjustable reset voltage-requires BOM change for different VTRIP needs; suitable only for fixed 3V systems. | Choose when VTRIP stability is prioritized over flexibility and 5V operation is not required. |
| STM6315SW33DX | 3.3V fixed reset; no EEPROM; includes manual reset input; 8-SOIC; lower quiescent current (1µA). | No nonvolatile storage-requires external EEPROM or MCU flash for configuration; lacks watchdog timeout selection. | Choose when reset supervision alone suffices and external memory is already present in design. |
Compared with MAX6361KA29+T and STM6315SW33DX, the X5163S8IZ-4.5A uniquely combines field-programmable 4.5V reset threshold, selectable watchdog timeout, and integrated 16Kbit EEPROM in one industrial-grade 8-SOIC device-reducing BOM count and enabling adaptive brownout response without layout changes.
Availability
X5163S8IZ-4.5A is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive body control modules, smart energy meters, and battery-backed IoT gateways requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X5163S8IZ-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
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 interface applications.
The X5163 series was designed as an integrated CPU supervisor for cost-sensitive, space-constrained embedded systems needing combined reset, watchdog, voltage monitoring, and nonvolatile storage-targeting industrial, medical, and automotive control applications.
FAQ
What is the exact reset threshold voltage for X5163S8IZ-4.5A?
The X5163S8IZ-4.5A has a nominal reset threshold (VTRIP) of 4.5V, with a guaranteed range of 4.5V to 4.75V at 25°C. This value is factory-set but can be reprogrammed to higher voltages using the VP programming sequence described in the datasheet. Hysteresis is 20mV, ensuring clean release above the trip point.
Does X5163S8IZ-4.5A support both active-low and active-high reset outputs?
No. The X5163S8IZ-4.5A provides only an active-low open-drain RESET/RESET output. The "X5165" variant in the same family offers active-high reset, but X5163S8IZ-4.5A is strictly active-low. External pull-up is required for proper logic-level interfacing with the host microcontroller.
Can the watchdog timeout period of X5163S8IZ-4.5A be changed after soldering?
Yes. The watchdog timeout (200ms/600ms/1.4s/disabled) is controlled by nonvolatile WD0 and WD1 bits in the Status Register, which can be rewritten via the WRSR instruction at any time-even in-circuit-provided the Write Enable Latch is set and WP pin conditions allow Status Register modification.
What EEPROM protection modes does X5163S8IZ-4.5A support?
The X5163S8IZ-4.5A supports four Block Lock™ protection levels: none, 25% ($0600–$07FF), 50% ($0400–$07FF), or 100% ($0000–$07FF) of the 2K-byte EEPROM array. Protection is enabled via BL0/BL1 bits and can be locked permanently using the WP pin and WPEN bit to prevent accidental writes.
Is X5163S8IZ-4.5A compatible with 3.3V microcontrollers?
No. The X5163S8IZ-4.5A requires a 4.5V to 5.5V supply and is not rated for 3.3V operation. Its input thresholds (VIH ≥ 0.7×VCC) and output drive strength assume 5V logic levels. For 3.3V systems, consider the X5163S8IZ-2.7A variant, which supports 2.7–5.5V operation with a 2.85–3.0V VTRIP range.
X5163S8IZ-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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
X5163S8IZ-4.5A FAQ
1.How can I place an order for X5163S8IZ-4.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for X5163S8IZ-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 X5163S8IZ-4.5A reliable?
The price and inventory of X5163S8IZ-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 X5163S8IZ-4.5A is usually 5 days.
3.What payment methods are accepted for X5163S8IZ-4.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X5163S8IZ-4.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X5163S8IZ-4.5A?
X5163S8IZ-4.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X5163S8IZ-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 X5163S8IZ-4.5A?
For technical support, including X5163S8IZ-4.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X5163S8IZ-4.5A requirements.
6.How does Aetrix verify that X5163S8IZ-4.5A is sourced from the original manufacturer or authorized distributors?
All X5163S8IZ-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 X5163S8IZ-4.5A meets industry standards.
7.What is the process for return or replacement of X5163S8IZ-4.5A?
All X5163S8IZ-4.5A units undergo pre-shipment inspection (PSI). If there is an issue with X5163S8IZ-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 X5163S8IZ-4.5A part is unused and in its original packaging.
Return procedure for X5163S8IZ-4.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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