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NXP Semiconductors SC18IS602BIPW/S8HP
- Part No.:
- SC18IS602BIPW/S8HP
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SC18IS602BIPW/S8HP.pdf
- Description:
- IC BRIDGE SPI/I2C 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,165
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Product details
Overview
SC18IS602BIPW/S8HP from NXP Semiconductors is an I²C-to-SPI bridge IC operating as an I²C-bus slave (up to 400 kHz) and SPI master (up to 1.843 MHz), featuring a 200-byte data buffer, four configurable slave select outputs/GPIOs, and internal oscillator-based timing. It enables microcontrollers with only I²C interfaces to directly control SPI peripherals such as EEPROMs, ADCs, and sensors in industrial embedded systems.
For engineers reviewing the SC18IS602BIPW/S8HP datasheet, SC18IS602BIPW/S8HP pinout, SC18IS602BIPW/S8HP application, or SC18IS602BIPW/S8HP equivalent, key selection criteria include its TSSOP16 package, 2.4–3.6 V supply range, interrupt-driven or polling-based SPI transaction handling, and software-configurable SPI modes (0–3) and clock rates (58–1843 kHz).
Technical Context
The SC18IS602BIPW/S8HP implements a dedicated hardware bridge architecture: its I²C interface accepts commands and data from a host microcontroller, then autonomously executes full SPI transactions-including clock generation, mode configuration (CPOL/CPHA), and multi-slave selection-without host intervention during transfer. It uses an internal 7.3728 MHz RC oscillator trimmed to ±1% at 25 °C for precise SPI timing.
Its functional partitioning separates I²C command parsing (addressed via A2/A1/A0 pins for up to eight devices on one bus) from SPI execution logic, with all protocol sequencing, buffering, and GPIO multiplexing handled internally. The device supports both interrupt-driven operation (via open-drain INT pin) and polling, and enters low-power idle mode upon command (F2h) while retaining I²C address detection capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | Up to 400 kHz - supports Fast-mode I²C, enabling high-throughput command/data transfer from host MCU without bit-banging. |
| SPI Master Speed | Up to 1.843 MHz - matches common SPI peripheral timing requirements (e.g., serial flash, ADCs) with minimal latency. |
| Data Buffer Size | 200 bytes - accommodates multi-byte SPI reads/writes (e.g., 128-byte EEPROM pages) in single I²C transactions. |
| Supply Voltage | 2.4 V to 3.6 V - compatible with 3.3 V system rails and tolerant of brown-out conditions down to 2.4 V. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial environments including factory automation and motor control systems. |
| ESD Protection | HBM >2000 V, MM >200 V, CDM >1000 V - ensures robustness against handling and board-level ESD events. |
| Internal Oscillator | 7.3728 MHz ±1% (25 °C) - eliminates need for external crystal, reducing BOM count and PCB footprint. |
Pinout & Package
SC18IS602BIPW/S8HP is housed in a plastic thin shrink small outline package (TSSOP16) with 4.4 mm body width (SOT403-1), optimized for space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS0/GPIO0 (Pin 1) | Configurable I/O | Active-low SPI slave select output or general-purpose input/output; programmable direction and drive strength (quasi-bidirectional/push-pull/open-drain). |
| SS1/GPIO1 (Pin 2) | Configurable I/O | Second SPI slave select or GPIO; independently configurable via F6h/F7h commands for mixed peripheral control. |
| RESET (Pin 3) | Asynchronous Input | Active-low reset with internal 10–30 kΩ pull-up; initiates hardware initialization and clears internal state/buffer. |
| VSS (Pin 4) | Ground | Digital ground reference for all I/O and core logic; requires low-impedance connection to system GND plane. |
| MISO (Pin 5) | SPI Input | Master In, Slave Out - receives serial data from selected SPI slave device during read operations. |
| MOSI (Pin 6) | SPI Output | Master Out, Slave In - transmits serial data to selected SPI slave during write operations. |
| SDA (Pin 7) | I²C Bidirectional Data | Open-drain I²C data line; requires external pull-up resistor (typically 2.2–4.7 kΩ to VDD). |
| SCL (Pin 8) | I²C Clock Input | Open-drain I²C clock line; synchronized with host controller; supports clock stretching by SC18IS602BIPW/S8HP. |
| INT (Pin 9) | Interrupt Output | Open-drain active-low signal asserted after SPI transaction completion; enables event-driven host firmware design. |
| SS2/GPIO2 (Pin 10) | Configurable I/O | Third SPI slave select or GPIO; supports independent enable/disable per transaction via Function ID bits. |
| SPICLK (Pin 11) | SPI Clock Output | Generated SPI clock signal (programmable 58–1843 kHz); drives all connected SPI slaves synchronously. |
| VDD (Pin 12) | Power Supply | Primary 2.4–3.6 V supply; decoupling capacitor (100 nF ceramic) required near pin for stable operation. |
| SS3/GPIO3 (Pin 13) | Configurable I/O | Fourth SPI slave select or GPIO; extends multi-peripheral control without external logic or muxes. |
| A0 (Pin 14) | I²C Address Input | LSB of 3-bit programmable I²C slave address; latched at RESET, enabling up to eight devices on one bus. |
| A1 (Pin 15) | I²C Address Input | Mid-bit of I²C slave address; combined with A0/A2 to set unique 7-bit address (e.g., 0x50–0x57). |
| A2 (Pin 16) | I²C Address Input | MSB of I²C slave address; determines device identity during I²C arbitration and addressing. |
Key Features
| Feature | Design Value |
|---|---|
| Four SPI slave select outputs | Enables direct control of up to four independent SPI peripherals (e.g., sensor array + flash + DAC) without external demuxers or GPIO expanders. |
| Software-configurable GPIO | All SSn pins double as programmable I/Os with four drive modes (quasi-bidirectional, push-pull, open-drain, input-only), supporting status signaling or control functions. |
| 200-byte FIFO buffer | Allows burst I²C writes of full SPI messages (command + address + data), eliminating host MCU overhead during SPI transfers. |
| Configurable SPI modes (0–3) | Supports CPOL/CPHA combinations via F0h command, ensuring compatibility with legacy and modern SPI peripherals regardless of clock polarity/phase. |
| Low-power idle mode | Reduces supply current from 6.7 mA (active) to 3.9 mA (idle) - extends runtime in battery-powered I²C-to-SPI gateway applications. |
| Interrupt-driven operation | Active-low INT pin signals SPI transaction completion, enabling efficient host firmware that avoids polling and conserves CPU cycles. |
Applications
| Industrial Sensor Hub | Legacy MCU SPI Expansion |
|---|---|
Use Scenario: A PLC controller with I²C-only interface must read temperature, pressure, and humidity data from three separate SPI sensors. IC Role / Device Role / Timing Role: SC18IS602BIPW/S8HP acts as protocol translator and timing master, generating SPICLK and selecting each sensor via SS0–SS2 while buffering responses for I²C retrieval. Use Value: Eliminates need for MCU firmware SPI bit-banging or external level-shifting logic, reducing development time and improving deterministic timing across sensor reads. |
Use Scenario: An aging 8-bit microcontroller lacks native SPI hardware but must interface with a new SPI-based secure element for firmware authentication. IC Role / Device Role / Timing Role: SC18IS602BIPW/S8HP serves as offloaded SPI master, executing secure element challenge-response sequences under I²C command from the MCU. Use Value: Enables security upgrade without MCU replacement or PCB redesign - leverages existing I²C infrastructure while meeting secure element timing requirements. |
| Multi-Device EEPROM Management | Modular Industrial I/O Module |
Use Scenario: A programmable logic controller uses four SPI EEPROMs for configuration storage, calibration data, and firmware patches. IC Role / Device Role / Timing Role: SC18IS602BIPW/S8HP manages all four EEPROMs via dedicated SS0–SS3 lines, handling write-enable sequences, page writes, and verify reads autonomously. Use Value: Provides atomic, error-resilient EEPROM access through single I²C commands - prevents partial writes and simplifies host firmware error handling. |
Use Scenario: A modular I/O base unit accepts hot-swappable SPI fieldbus modules (e.g., CAN, RS-485, analog input) controlled via a central I²C backplane. IC Role / Device Role / Timing Role: SC18IS602BIPW/S8HP bridges the I²C backplane to each module's SPI interface, using GPIOs for module presence detection and reset control. Use Value: Enables flexible, scalable I/O expansion with standardized I²C control - reduces inter-module crosstalk and supports plug-and-play module discovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C-to-SPI bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7320ATL+T | 8-bit I²C port expander with SPI passthrough; no integrated SPI master logic or 200-byte buffer - requires host MCU to manage SPI timing and framing. | Limited to simple GPIO extension with basic SPI relay; unsuitable for autonomous multi-byte SPI transactions or mode configuration. | Select only if system already implements SPI bit-banging and needs minimal glue logic - not a functional substitute for SC18IS602BIPW/S8HP's full bridge capability. |
| TI TCA9548A | I²C switch with eight bidirectional channels; no SPI interface, no buffer, no clock generation - purely routes I²C traffic to multiple downstream buses. | Cannot translate protocols or drive SPI peripherals; only resolves I²C address conflicts among multiple I²C slaves. | Choose only for I²C bus multiplexing - fundamentally different function; no SPI bridging capability whatsoever. |
Compared with MAX7320ATL+T and TCA9548A, SC18IS602BIPW/S8HP uniquely integrates full SPI master functionality, autonomous transaction execution, and protocol-aware buffering - making it the only option capable of offloading complex SPI peripheral control from resource-constrained I²C-only hosts.
Availability
SC18IS602BIPW/S8HP is available at Aetrix Electronics and suitable for industrial automation, sensor fusion gateways, and legacy MCU upgrade programs requiring stable component supply and long-term manufacturability assurance.
Supply support for SC18IS602BIPW/S8HP 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, power, and security ICs.
The SC18IS602BIPW/S8HP belongs to NXP's interface bridge product line, designed specifically to simplify communication between heterogeneous buses in resource-constrained embedded systems where protocol translation and timing autonomy are critical.
FAQ
What is the primary function of the SC18IS602BIPW/S8HP?
The SC18IS602BIPW/S8HP is an I²C-to-SPI bridge IC that operates as an I²C-bus slave and SPI master. It allows an I²C-capable microcontroller to communicate with SPI peripherals without requiring native SPI hardware. The SC18IS602BIPW/S8HP handles all SPI protocol details-including clock generation, mode selection (CPOL/CPHA), slave selection, and data buffering-autonomously.
Does the SC18IS602BIPW/S8HP require an external crystal or clock source?
No, the SC18IS602BIPW/S8HP includes an internal 7.3728 MHz RC oscillator trimmed to ±1% at 25 °C, which generates the SPICLK signal. This eliminates the need for an external crystal or clock source, reducing BOM cost and PCB area. The oscillator frequency is used to derive all SPI clock rates (58–1843 kHz) via internal division.
How many SPI devices can the SC18IS602BIPW/S8HP control simultaneously?
The SC18IS602BIPW/S8HP provides four dedicated slave select outputs (SS0–SS3), allowing it to directly control up to four independent SPI peripherals. Each SS pin can be individually enabled per transaction via the Function ID byte (01h–0Fh), and unused SS pins may be reconfigured as general-purpose I/Os using F6h/F7h commands.
What is the role of the INT pin on the SC18IS602BIPW/S8HP?
The INT pin on the SC18IS602BIPW/S8HP is an open-drain active-low interrupt output that asserts after completion of any SPI transaction (read or write). It enables event-driven firmware design, allowing the host microcontroller to perform other tasks instead of polling. The interrupt is cleared either automatically upon I²C address detection or explicitly via the F1h "Clear Interrupt" command.
Can the SC18IS602BIPW/S8HP operate with a 5 V I²C bus?
No - the SC18IS602BIPW/S8HP is a 2.4–3.6 V device. While several pins (e.g., SDA, SCL, SSn) are 5 V tolerant when configured in quasi-bidirectional mode, applying 5 V to those pins increases power consumption due to leakage current into VDD. For reliable operation, the I²C bus must be level-shifted to 3.3 V or operated within the specified supply range; direct 5 V I²C connection is not recommended.
SC18IS602BIPW/S8HP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- 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:
- 16-TSSOP
- Grade:
- -
- Qualification:
- -
SC18IS602BIPW/S8HP FAQ
1.How can I place an order for SC18IS602BIPW/S8HP through Aetrix?
Please submit a Request for Quotation (RFQ) for SC18IS602BIPW/S8HP 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 SC18IS602BIPW/S8HP reliable?
The price and inventory of SC18IS602BIPW/S8HP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC18IS602BIPW/S8HP is usually 5 days.
3.What payment methods are accepted for SC18IS602BIPW/S8HP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC18IS602BIPW/S8HP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC18IS602BIPW/S8HP?
SC18IS602BIPW/S8HP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC18IS602BIPW/S8HP 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 SC18IS602BIPW/S8HP?
For technical support, including SC18IS602BIPW/S8HP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC18IS602BIPW/S8HP requirements.
6.How does Aetrix verify that SC18IS602BIPW/S8HP is sourced from the original manufacturer or authorized distributors?
All SC18IS602BIPW/S8HP 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 SC18IS602BIPW/S8HP meets industry standards.
7.What is the process for return or replacement of SC18IS602BIPW/S8HP?
All SC18IS602BIPW/S8HP units undergo pre-shipment inspection (PSI). If there is an issue with SC18IS602BIPW/S8HP, 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 SC18IS602BIPW/S8HP part is unused and in its original packaging.
Return procedure for SC18IS602BIPW/S8HP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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