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onsemi CAT1163LI-30-G
- Part No.:
- CAT1163LI-30-G
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
CAT1163LI-30-G.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,603
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Product details
Overview
CAT1163LI-30-G from onsemi is a supervisory IC integrating 16 Kb I²C EEPROM, precision reset controller with 3.00–3.15 V threshold, 1.6 s watchdog timer, and manual reset I/O capability in an 8-pin PDIP package. It serves as a system-level power integrity and memory backup solution for microcontroller-based embedded systems operating at 3.3 V.
For engineers reviewing the CAT1163LI-30-G datasheet, pinout, applications, or equivalent options, key selection criteria include brownout detection accuracy, EEPROM write protection behavior (WP/VCC lockout), I²C timing compliance at 400 kHz, and dual active-high/low reset output drive capability.
Technical Context
The CAT1163LI-30-G implements a precision voltage monitor with 15 mV hysteresis and 200 ms power-up reset timeout (tPURST), ensuring deterministic reset assertion during 3.3 V supply ramp-up and dropout. Its watchdog circuit clears on any WDI transition and times out after exactly 1.6 s of inactivity, triggering both RESET outputs.
EEPROM operation uses I²C protocol with 400 kHz max clock frequency, 16-byte page write buffer, and hardware write protection via dedicated WP pin and VCC-sense lockout below 3.00 V. Reset outputs are open-drain and support manual reset edge-triggered input on either RESET or RESET pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00–3.15 V - precisely matches 3.3 V system brownout detection requirements |
| Watchdog Timeout | 1.6 s - provides reliable recovery window for firmware hangs without false triggers |
| I²C Clock Frequency | Up to 400 kHz - supports standard/fast-mode I²C buses without timing margin violation |
| EEPROM Capacity | 16 Kb (2048 × 8) - sufficient for bootloader configuration, calibration data, and event logs |
| Write Endurance | 1,000,000 cycles - enables frequent parameter updates in industrial logging applications |
| Data Retention | 100 years - guarantees long-term storage integrity without refresh in unpowered states |
| Supply Range | 2.7–6.0 V - operates across 3.3 V and 5 V logic domains without external regulation |
Pinout & Package
Package: 8-pin PDIP (Case 646AA), 300-mil width, RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (WDI) | Watchdog Input | Edge-triggered input; any transition resets 1.6 s timeout counter - no internal pullup/pulldown required |
| 2 (RESET) | Active-Low Reset Output/Input | Open-drain output; also accepts manual reset pulses - requires external pulldown resistor for proper logic level |
| 3 (WP) | Write Protect Control | High = full EEPROM read-only mode; low/floating = normal read/write - enables hardware-level memory lockdown |
| 4 (GND) | Ground Reference | Primary return path for reset outputs, I²C interface, and internal voltage monitor - must be low-impedance |
| 5 (VCC) | Power Supply Input | 2.7–6.0 V operation; powers all functions including EEPROM programming - VCC sense enables automatic write lockout |
| 6 (RESET) | Active-High Reset Output/Input | Open-drain output; also accepts manual reset pulses - requires external pullup resistor for active-high signaling |
| 7 (SCL) | I²C Clock Input | Master-generated clock up to 400 kHz; internally synchronized - supports standard I²C bus arbitration |
| 8 (SDA) | I²C Data I/O | Bidirectional open-drain line - requires external pullup; ACK/NACK signaling confirms EEPROM address/data validity |
Key Features
| Feature | Design Value |
|---|---|
| Dual reset polarity | Simultaneous active-high and active-low open-drain outputs eliminate need for external inverters when interfacing diverse MCUs |
| VCC-sense write protection | Automatically disables EEPROM writes whenever VCC drops below 3.00 V or has not yet risen above 3.15 V - prevents corruption during power transitions |
| 16-byte page write buffer | Reduces I²C transaction overhead by enabling burst writes of up to 16 bytes per STOP condition - improves firmware update efficiency |
| Manual reset debouncing | Internal 200 ms timeout ensures clean reset assertion from mechanical pushbuttons without external RC filtering |
| Glitch rejection | 100 ns pulse rejection on SCL/SDA inputs prevents spurious I²C bus errors from EMI or contact bounce |
Applications
| Industrial PLC Controller | Medical Diagnostic Device |
|---|---|
|
Use Scenario: Maintaining calibrated sensor offsets and fault history across power cycles in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: CAT1163LI-30-G acts as nonvolatile configuration manager and brownout guardian - storing calibration tables while asserting reset if 3.3 V rail dips below 3.00 V. Use Value: Prevents execution of corrupted control logic during undervoltage events and preserves critical calibration data for regulatory traceability. |
Use Scenario: Storing patient-specific therapy parameters and last-known operational state in a portable ultrasound unit with battery backup. IC Role / Device Role / Timing Role: CAT1163LI-30-G serves as fail-safe memory and watchdog supervisor - retaining therapy settings during battery swaps and forcing safe shutdown on firmware hang. Use Value: Ensures continuity of care by preserving treatment data and enforcing deterministic recovery from software faults without user intervention. |
| Smart Energy Meter | Automotive Body Control Module |
|
Use Scenario: Recording cumulative kWh consumption and tamper events in a utility-grade electricity meter exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: CAT1163LI-30-G functions as secure event logger and power supervisor - writing metering logs to EEPROM and asserting reset during grid sags below 3.00 V. Use Value: Guarantees 100-year data retention for billing records and meets IEC 62053 accuracy requirements under brownout conditions. |
Use Scenario: Managing door lock actuator calibration and error codes in a 12 V automotive body control module with local 3.3 V LDO supply. IC Role / Device Role / Timing Role: CAT1163LI-30-G operates as system health monitor and configuration store - detecting LDO dropout and preserving actuator position data across ignition cycles. Use Value: Enables seamless reinitialization after cold cranking voltage dips and maintains functional safety compliance via deterministic reset behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6361KA30+T | 3.00 V fixed reset threshold; no integrated EEPROM; separate reset/watchdog IC | Requires external serial EEPROM and additional board space - suitable only when memory size or I²C integration is not required | Select when strict reset accuracy tolerance (<±1%) is needed over integrated memory functionality |
| MCP120-300I/P | 3.00 V reset only; no watchdog, no EEPROM, no manual reset input - basic voltage supervisor | Lacks memory, supervision features, and reset flexibility - limited to simple power-on reset generation | Choose only for cost-sensitive designs where EEPROM, watchdog, and dual-reset outputs are unnecessary |
Compared with MAX6361KA30+T and MCP120-300I/P, the CAT1163LI-30-G uniquely consolidates EEPROM, precision reset, watchdog, and manual reset into one PDIP-8 device - reducing BOM count, PCB area, and qualification effort for 3.3 V embedded systems requiring persistent configuration storage.
Availability
CAT1163LI-30-G is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic devices, smart energy meters, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for CAT1163LI-30-G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The CAT1163LI-30-G belongs to onsemi's supervisory IC product line, engineered to simplify system reliability design by merging memory, reset, and watchdog functions into single-chip solutions for microcontroller-based equipment.
FAQ
What is the exact reset threshold voltage range for CAT1163LI-30-G?
The CAT1163LI-30-G has a guaranteed reset threshold range of 3.00 V to 3.15 V at VCC = 3.3 V, with 15 mV hysteresis. This specification ensures reliable brownout detection for 3.3 V systems without false triggering during nominal supply ripple. The threshold is factory-trimmed and does not require external calibration.
Does CAT1163LI-30-G support manual reset functionality, and how is it implemented?
Yes, CAT1163LI-30-G supports manual reset via either the RESET (active-low) or RESET (active-high) pins. Each pin is edge-triggered: RESET responds to low-to-high transitions, RESET to high-to-low transitions. An internal 200 ms timer ensures clean, debounced reset assertion - no external RC network is needed for pushbutton interfaces.
How does hardware write protection work on CAT1163LI-30-G?
CAT1163LI-30-G implements dual hardware write protection: (1) WP pin tied to VCC disables all EEPROM writes, and (2) VCC-sense circuit blocks writes whenever supply voltage falls below 3.00 V or has not yet risen above 3.15 V during power-up. Both mechanisms prevent accidental or incomplete writes during power transitions.
What is the maximum I²C clock frequency supported by CAT1163LI-30-G?
CAT1163LI-30-G supports I²C clock frequencies up to 400 kHz, compliant with Fast-mode I²C specifications. Timing parameters including tLOW (1.2 μs min), tHIGH (0.6 μs min), and tR/tF (0.3 μs/300 ns max) are fully characterized across 2.7–6.0 V supply and −40°C to +85°C temperature ranges.
Is CAT1163LI-30-G pin-compatible with other CAT1163 variants?
Yes, all CAT1163 variants - including CAT1163LI-45-G, CAT1163LI-42-G, CAT1163LI-30-G, CAT1163LI-28-G, and CAT1163LI-25-G - share identical 8-pin PDIP pinout and electrical interface. Only the reset threshold voltage differs between part numbers; no PCB layout change is required when selecting among them.
CAT1163LI-30-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High/Active Low
- Reset Timeout:
- 130ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
CAT1163LI-30-G FAQ
1.How can I place an order for CAT1163LI-30-G through Aetrix?
Please submit a Request for Quotation (RFQ) for CAT1163LI-30-G 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 CAT1163LI-30-G reliable?
The price and inventory of CAT1163LI-30-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CAT1163LI-30-G is usually 5 days.
3.What payment methods are accepted for CAT1163LI-30-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CAT1163LI-30-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CAT1163LI-30-G?
CAT1163LI-30-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CAT1163LI-30-G 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 CAT1163LI-30-G?
For technical support, including CAT1163LI-30-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CAT1163LI-30-G requirements.
6.How does Aetrix verify that CAT1163LI-30-G is sourced from the original manufacturer or authorized distributors?
All CAT1163LI-30-G 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 CAT1163LI-30-G meets industry standards.
7.What is the process for return or replacement of CAT1163LI-30-G?
All CAT1163LI-30-G units undergo pre-shipment inspection (PSI). If there is an issue with CAT1163LI-30-G, 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 CAT1163LI-30-G part is unused and in its original packaging.
Return procedure for CAT1163LI-30-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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