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NXP Semiconductors SC18IS600IBS,151
- Part No.:
- SC18IS600IBS,151
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
SC18IS600IBS,151.pdf
- Description:
- IC SPI TO I2C BUS 24-HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,984
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Product details
Overview
SC18IS600IBS,151 from NXP Semiconductors is an SPI-to-I²C bridge IC that enables a microcontroller's SPI interface to control I²C-bus slave devices. It operates as an I²C master-transmitter or master-receiver, supports SPI Mode 3 up to 1.2 Mbit/s, delivers 400 kbit/s I²C-bus speed, and integrates 96-byte TX/RX buffers for reliable protocol translation in embedded sensor and peripheral interfacing applications.
For engineers reviewing the SC18IS600IBS,151 datasheet, SC18IS600IBS,151 pinout, SC18IS600IBS,151 application, or SC18IS600IBS,151 equivalent, this device serves as a deterministic, register-controlled bridge with power-down mode, GPIO flexibility, and interrupt-driven transaction status-critical for resource-constrained host systems requiring robust I²C bus access without native hardware support.
Technical Context
The SC18IS600IBS,151 implements a dedicated SPI slave interface (Mode 3) with internal RC oscillator (7.3728 MHz ±1%) and fully autonomous I²C-bus controller logic-including arbitration, START/STOP generation, clock stretching handling, and timeout detection. It uses a fixed 16-bit down counter for I²C time-out with programmable enable (TE bit) and 9-bit time-out value.
Its register map includes IOConfig (0x00), IOState (0x01), I2CClk (0x02), I2CTO (0x03), I2CStat (0x04), and I2CAdr (0x05), all accessible via SPI commands (0x20 write / 0x21 read). All I/O pins except RESET feature Schmitt-triggered inputs with glitch suppression, and quasi-bidirectional pins use three-stage pull-up architecture (very weak, weak, strong) for robust level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| SPI Interface | Slave-only, Mode 3, max 1.2 Mbit/s - eliminates need for host-side SPI master reconfiguration |
| I²C-Bus Speed | Up to 400 kbit/s - supports Fast-mode I²C peripherals without external clock scaling |
| Supply Voltage | 2.4 V to 3.6 V - compatible with 3.3 V logic domains and low-power MCU subsystems |
| GPIO Resources | Four programmable GPIOs (GPIO0–GPIO3) + two quasi-bidirectional I/Os (IO4/WAKEUP, IO5) - enables local control signaling and wake-up coordination |
| Buffer Depth | 96-byte transmit and 96-byte receive FIFOs - accommodates multi-byte I²C transactions without host polling overhead |
| Power-Down Current | < 0.1 µA at 3.6 V - enables ultra-low standby power in battery-operated edge nodes |
| Interrupt Output | Active LOW open-drain INT pin - signals transaction completion, error, or timeout to host CPU without level-shifting |
Pinout & Package
TSSOP16 package (SOT403-1), 4.4 mm body width, 0.65 mm pitch, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GPIO0 (Pin 1) | Programmable I/O | Software-configurable as quasi-bidirectional, push-pull, open-drain, or input-only; Schmitt-triggered with glitch suppression |
| CS (Pin 2) | Chip Select | Active LOW enable for SPI communication; deassertion halts all SPI transfers and resets internal state machine |
| RESET (Pin 3) | Master Reset | Active LOW signal that clears registers, resets SPI/I²C hardware, and forces default configuration |
| VSS (Pin 4) | Ground | Primary reference for all digital and analog circuitry; must be low-impedance connection to system GND plane |
| MISO (Pin 5) | SPI Data Output | Tri-state output delivering register reads, buffer data, and status responses; driven only when CS is LOW |
| MOSI (Pin 6) | SPI Data Input | Accepts command sequences (0x00–0x30), register writes, and I²C payload data; sampled on SCLK falling edge |
| SDA (Pin 7) | I²C Serial Data | Open-drain bidirectional line; internal pull-up disabled by default; requires external pull-up for I²C bus operation |
| SCL (Pin 8) | I²C Serial Clock | Push-pull output generating I²C clock; drives bus directly without external driver; supports clock stretching |
| GPIO1 (Pin 9) | Programmable I/O | Same configuration options and electrical behavior as GPIO0; usable for status indication or control handshaking |
| GPIO2 (Pin 10) | Programmable I/O | Independent software-controllable I/O; retains state across SPI transactions but not after RESET |
| SCLK (Pin 11) | SPI Clock Input | Asynchronous input driving internal SPI state machine; accepts up to 1.2 Mbit/s with defined setup/hold timing |
| VDD (Pin 12) | Supply Voltage | 2.4–3.6 V power rail; bypass capacitor (100 nF) required within 5 mm of pin for stable operation |
| GPIO3 (Pin 13) | Programmable I/O | Configurable I/O supporting same modes as GPIO0–GPIO2; usable for local peripheral enable/disable |
| INT (Pin 14) | Interrupt Output | Open-drain output asserting LOW on I²C transaction completion, error, or timeout; cleared by reading I2CStat register |
| WAKEUP/IO4 (Pin 15) | Wake-Up Input / I/O | Pulled LOW by host to exit power-down mode; functions as quasi-bidirectional I/O otherwise; not software-configurable |
| IO5 (Pin 16) | Quasi-Bidirectional I/O | Fixed quasi-bidirectional mode; no software configuration; supports 5 V tolerant operation with current limiting |
Key Features
| Feature | Design Value |
|---|---|
| Internal RC Oscillator | 7.3728 MHz ±1% trimmed at 25 °C - eliminates external crystal/capacitor, reducing BOM count and layout area |
| Power-Down Mode | Sub-µA quiescent current with WAKEUP/IO4-triggered exit - extends battery life in portable instrumentation and remote sensors |
| 5 V Tolerant I/O Pins | All GPIOs and IO4/IO5 accept 5 V inputs while powered from 3.3 V - simplifies level translation in mixed-voltage systems |
| Register-Based Control | Eight dedicated SPI-accessible registers (0x00–0x05, plus command space) - enables full runtime configuration without firmware changes |
| I²C Time-Out Protection | Configurable 9-bit timeout counter with 57.6 kHz clock source - prevents bus lockup during slave faults or clock stretching failures |
| Glitch-Suppressed Inputs | All pins except SCL/SDA include 15 ns (non-RESET) or 50 ns (RESET) glitch rejection - improves noise immunity in industrial environments |
Applications
| Industrial Sensor Hub | Smart Meter Peripheral Interface |
|---|---|
Use Scenario: A microcontroller with SPI but no native I²C hardware must communicate with multiple temperature, humidity, and pressure sensors on a shared I²C bus. IC Role / Device Role / Timing Role: SC18IS600IBS,151 acts as the sole I²C master, translating SPI commands into timed I²C START/STOP/ACK sequences and buffering sensor response data. Use Value: Enables use of cost-optimized MCUs lacking I²C peripherals while maintaining deterministic 400 kbit/s sensor polling intervals and error recovery via I2CStat register. | Use Scenario: A utility meter MCU interfaces with I²C EEPROM for tariff storage, RTC for timekeeping, and ADC for voltage/current sampling-all sharing one I²C bus. IC Role / Device Role / Timing Role: SC18IS600IBS,151 provides isolated, interrupt-driven access to each I²C device without bus arbitration conflicts or host CPU blocking. Use Value: Guarantees atomic EEPROM writes and RTC reads via 96-byte buffers, while INT pin alerts host only upon transaction completion or timeout-reducing firmware complexity. |
| IoT Edge Node Expansion | Automotive Diagnostic Module |
Use Scenario: An ESP32-based gateway adds I²C-connected environmental sensors and display drivers without modifying its existing SPI-based firmware stack. IC Role / Device Role / Timing Role: SC18IS600IBS,151 serves as transparent protocol translator, accepting standard SPI frame formats and generating compliant I²C traffic including clock stretching. Use Value: Eliminates need for custom I²C bit-banging or firmware abstraction layers; supports concurrent I²C reads/writes via separate command sequences (0x01, 0x02). | Use Scenario: A vehicle diagnostic tool connects to OBD-II port and communicates with I²C-based CAN transceivers, EEPROMs, and voltage monitors using a single SPI-capable microcontroller. IC Role / Device Role / Timing Role: SC18IS600IBS,151 isolates diagnostic host from I²C bus timing constraints, handles arbitration loss recovery, and reports errors via I2CStat bits F1/F2. Use Value: Ensures reliable diagnostics under noisy automotive EMI conditions via Schmitt-triggered inputs, glitch filtering, and timeout-driven fault containment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI-to-I²C bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9306DP,118 | Level-shifting I²C bus switch (no SPI interface, no internal logic); passive translation only | Requires host with native I²C master; cannot add I²C capability to SPI-only hosts | Select PCA9306DP,118 only when host already supports I²C and only voltage translation between 1.8 V/3.3 V/5 V domains is needed. |
| MAX7357ATL+ | Dedicated I²C I/O expander with integrated 8-bit port; no SPI-to-I²C bridging function | Extends I²C bus with GPIOs but does not enable SPI hosts to drive I²C slaves | Choose MAX7357ATL+ when expanding I²C peripheral count is required, not when adding I²C capability to an SPI-only host. |
Compared with PCA9306DP,118 and MAX7357ATL+, the SC18IS600IBS,151 uniquely provides full protocol translation-converting SPI command streams into timed, arbitrated, interrupt-signaled I²C transactions-making it the only viable option for enabling I²C connectivity on microcontrollers lacking native I²C hardware.
Availability
SC18IS600IBS,151 is available at Aetrix Electronics and suitable for industrial sensor hubs, smart meter peripheral interfaces, IoT edge node expansion, automotive diagnostic modules, and embedded control systems requiring stable component supply across extended product lifecycles.
Supply support for SC18IS600IBS,151 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, power management, and secure MCU technologies.
The SC18IS600IBS,151 belongs to NXP's interface bridge product line, designed specifically to extend communication capabilities of resource-constrained microcontrollers by offloading complex I²C protocol handling while minimizing host firmware overhead.
FAQ
What is the maximum SPI clock frequency supported by the SC18IS600IBS,151?
The SC18IS600IBS,151 supports SPI operation up to 1.2 Mbit/s in Mode 3. This limit is enforced by internal timing constraints and ensures reliable sampling of MOSI/MISO data relative to SCLK edges. Exceeding this rate may cause command misreads or buffer corruption, as verified in the dynamic characteristics table (fSPI = 1.2 MHz max at VDD = 3.6 V).
How does the SC18IS600IBS,151 handle I²C bus arbitration loss?
Upon arbitration loss, the SC18IS600IBS,151 automatically transmits a START condition when the bus becomes free-unless a time-out occurs first. If the time-out condition is reached (configured via I2CTO register), an interrupt is generated on the INT pin and 'I2C-bus time-out' status (0xF8) appears in the I2CStat register, allowing the host to initiate recovery without manual bus reset.
Can the SC18IS600IBS,151 operate with a 5 V I²C bus while powered at 3.3 V?
Yes-the SC18IS600IBS,151 features 5 V tolerant I/O pins, including SDA and SCL. However, when SDA/SCL are configured in quasi-bidirectional mode, applying 5 V causes current flow from pin to VDD, increasing power consumption. For reliable 5 V I²C operation, use external pull-ups to 5 V and configure SDA/SCL as open-drain outputs via IOConfig register.
What happens to GPIO states during SC18IS600IBS,151 power-down mode?
During power-down mode (entered via 0x30/0x5A/0xA5 sequence), all GPIOs except WAKEUP/IO4 enter high-impedance state and retain no output drive. WAKEUP/IO4 remains active as an input to detect the wake-up pulse. Upon wake-up, GPIO0–GPIO3 and IO5 restore their last programmed configuration and state, while internal registers reset to defaults except IOState.
Is the SC18IS600IBS,151 pin-compatible with other members of the SC18IS600 family?
Yes-the SC18IS600IBS,151 shares identical TSSOP16 pinout, register map, and command set with all SC18IS600 variants (e.g., SC18IS600IPW/S8). Differences are limited to marking, packaging tape specification, and minor thermal performance; no PCB redesign is required when substituting within the same family.
SC18IS600IBS,151 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- I2C
- Function:
- Controller
- Interface:
- SPI
- Standards:
- -
- Voltage - Supply:
- 2.4V ~ 3.6V
- Current - Supply:
- 11mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-HVQFN (4x4)
- Grade:
- -
- Qualification:
- -
SC18IS600IBS,151 FAQ
1.How can I place an order for SC18IS600IBS,151 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC18IS600IBS,151 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 SC18IS600IBS,151 reliable?
The price and inventory of SC18IS600IBS,151 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC18IS600IBS,151 is usually 5 days.
3.What payment methods are accepted for SC18IS600IBS,151?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC18IS600IBS,151 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC18IS600IBS,151?
SC18IS600IBS,151 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC18IS600IBS,151 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 SC18IS600IBS,151?
For technical support, including SC18IS600IBS,151 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC18IS600IBS,151 requirements.
6.How does Aetrix verify that SC18IS600IBS,151 is sourced from the original manufacturer or authorized distributors?
All SC18IS600IBS,151 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 SC18IS600IBS,151 meets industry standards.
7.What is the process for return or replacement of SC18IS600IBS,151?
All SC18IS600IBS,151 units undergo pre-shipment inspection (PSI). If there is an issue with SC18IS600IBS,151, 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 SC18IS600IBS,151 part is unused and in its original packaging.
Return procedure for SC18IS600IBS,151:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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