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NXP Semiconductors SC18IM700IPW/S8HP
- Part No.:
- SC18IM700IPW/S8HP
- Manufacturer:
- NXP Semiconductors
- Category:
- Controllers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SC18IM700IPW/S8HP.pdf
- Description:
- IC CTRL I2CW/UART 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,638
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Product details
Overview
SC18IM700IPW/S8HP from NXP Semiconductors is a UART-to-I²C bridge IC that functions as an I²C-bus master controller, enabling microcontrollers without native I²C hardware to communicate with I²C peripherals via ASCII command protocol. It operates at 2.4–3.6 V, supports 400 kbit/s I²C and 460.8 kbit/s UART, and integrates eight programmable GPIOs for system-level control in industrial instrumentation and medical devices.
For engineers reviewing the SC18IM700IPW/S8HP datasheet, SC18IM700IPW/S8HP pinout, SC18IM700IPW/S8HP application, or SC18IM700IPW/S8HP equivalent, key selection considerations include its TSSOP16 package, 16-byte TX/RX FIFOs, sleep-mode power-down capability (70 µA), 5 V-tolerant inputs, and ASCII-based command interface for simplified host integration.
Technical Context
The SC18IM700IPW/S8HP implements a full UART interface (8N1 format, programmable baud rate up to 460.8 kbit/s) paired with a dedicated I²C-bus master controller supporting Fast Mode (400 kbit/s), multi-master arbitration, and repeated START conditions. Its internal register set includes BRG0/BRG1 for baud rate configuration, PortConf1/PortConf2 for GPIO mode selection (quasi-bidirectional, push-pull, open-drain, input-only), and I2CAdr/I2CClkL/I2CClkH for bus address and clock timing control.
It features dual 16-byte FIFOs for UART data buffering, hardware reset (active-low RESET pin), wake-up from power-down via WAKEUP pin (with mandatory 1 kΩ pull-up to VDD), and status reporting through I2CStat register (e.g., I2C_OK, I2C_NACK_ON_ADDRESS). The device defaults to 9600 bit/s UART and sends "OK" (0x4F 0x4B) on power-up or reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Type | UART-to-I²C bridge with ASCII command protocol; eliminates need for I²C software stack on host MCU. |
| I²C Speed | Up to 400 kbit/s Fast Mode; supports multi-master arbitration and repeated START for read-after-write sequences. |
| UART Speed | Up to 460.8 kbit/s; fixed 8N1 format; baud rate programmable via BRG0/BRG1 registers. |
| GPIO Pins | Eight bidirectional I/O pins (GPIO0–GPIO7); configurable per pin as quasi-bidirectional, push-pull, open-drain, or input-only. |
| Power Supply | 2.4 V to 3.6 V operation; 5 V tolerant on all input pins except SCL/SDA (0.3VDD–0.7VDD logic thresholds). |
| Power Modes | Active (9–15 mA @ 3.6 V), idle (3.25–5 mA), and power-down (50–70 µA); entered via 'Z' + 0x5A + 0xA5 command sequence. |
| FIFO Depth | 16-byte transmit and 16-byte receive FIFOs; reduce host polling overhead and improve burst data handling. |
Pinout & Package
TSSOP16 package (SOT403-1), plastic thin shrink small outline, 16 leads, body width 4.4 mm, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GPIO0–GPIO7 | Programmable I/O | Configurable per-pin I/O modes; support system-level control, status indication, or peripheral interfacing without additional logic. |
| RESET | Hardware reset input | Active-low asynchronous reset; internal 10–30 kΩ pull-up ensures reliable startup after power-on. |
| VSS | Ground | Primary reference for all digital and analog circuitry; requires low-impedance PCB connection to minimize noise coupling. |
| VDD | Power supply | 2.4–3.6 V supply; decoupling capacitor (≥100 nF) required near pin for stable UART/I²C operation. |
| SDA | I²C data I/O | Open-drain bidirectional data line; requires external pull-up resistor (typically 2.2–10 kΩ) to VDD. |
| SCL | I²C clock output | Push-pull clock output; drives SCL line directly without external pull-up; compatible with standard I²C timing. |
| RX | UART receive input | CMOS-level input; accepts TTL/CMOS logic signals; no RS-232 level shifting required. |
| TX | UART transmit output | CMOS-level output; drives host UART RX pin directly; logic-high = VDD, logic-low = VSS. |
| WAKEUP | Power-down exit trigger | Pulled HIGH in sleep mode; host must drive LOW (via open-drain or push-pull) to resume operation; 1 kΩ pull-up to VDD mandatory. |
Key Features
| Feature | Design Value |
|---|---|
| ASCII command interface | Enables rapid host integration using simple text commands (e.g., 'S' + slave address + 'P') instead of complex I²C driver development. |
| Programmable GPIO configuration | Each of eight GPIOs independently set to quasi-bidirectional, push-pull, open-drain, or input-only-matching diverse peripheral signaling requirements. |
| Automatic time-out recovery | 655 ms command timeout clears incomplete sequences and resets receive buffer, preventing host lock-up during communication errors. |
| Startup handshake | Transmits ASCII "OK" (0x4F 0x4B) on power-up/reset, providing immediate host confirmation of functional readiness. |
| 5 V-tolerant inputs | Allows direct connection to 5 V logic systems (except SCL/SDA) without level-shifting components, reducing BOM count and board space. |
Applications
| Industrial Sensor Hub | Medical Device I/O Expansion |
|---|---|
Use Scenario: Central microcontroller connects to multiple I²C temperature, pressure, and humidity sensors in factory automation equipment. IC Role / Device Role / Timing Role: SC18IM700IPW/S8HP acts as I²C master bridge, translating UART commands into timed I²C transactions with precise SCL timing (400 kbit/s) and arbitration handling. Use Value: Eliminates need for firmware-based bit-banged I²C, reduces MCU resource load, and enables deterministic sensor polling intervals via ASCII command scheduling. | Use Scenario: Portable patient monitor uses a low-power MCU with UART only, requiring access to I²C-configured ECG front-end and SpO₂ sensor modules. IC Role / Device Role / Timing Role: SC18IM700IPW/S8HP serves as dedicated I²C controller, managing concurrent reads from multiple sensors while maintaining strict timing compliance per IEC 60601. Use Value: Provides certified, pre-validated I²C timing behavior and fault recovery (NACK/time-out detection), accelerating regulatory testing and reducing firmware validation scope. |
| Cellular Baseband Co-Processor Interface | Handheld Computer Peripheral Control |
Use Scenario: Baseband processor in cellular handset communicates with I²C audio codec, battery gauge, and touch controller via shared UART debug port. IC Role / Device Role / Timing Role: SC18IM700IPW/S8HP operates as transparent UART-to-I²C translator, executing 'S'/'P' framed commands with sub-millisecond latency and automatic repeated START for register read-modify-write. Use Value: Enables reuse of existing UART infrastructure for peripheral control, avoiding dedicated I²C pins and simplifying PCB routing in space-constrained RF modules. | Use Scenario: RISC-V-based handheld computer uses UART for bootloader and diagnostics, but requires I²C access to display backlight IC and SD card interface. IC Role / Device Role / Timing Role: SC18IM700IPW/S8HP functions as I²C master with GPIO-controlled power sequencing-driving enable lines for peripherals before initiating I²C transfers. Use Value: Integrates power management and bus bridging in one device, reducing discrete component count and enabling synchronized bring-up of display and storage subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UART-to-I²C bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9615DP,118 | Requires I²C host controller; lacks UART interface and ASCII command layer-needs full I²C stack on MCU. | Used where host already has I²C hardware and needs differential I²C extension (not UART bridging). | Select PCA9615DP only when extending I²C distance over twisted pair; not a functional substitute for SC18IM700IPW/S8HP's UART bridge role. |
| MAX31820+SC18IM700IPW/S8HP | MAX31820 is a 1-Wire temperature sensor-not a bridge IC; pairing implies system-level substitution, not device-level equivalence. | Applies only in single-sensor thermal monitoring where 1-Wire suffices and I²C is unnecessary. | Not a valid alternative: MAX31820 performs sensing, not protocol translation; no UART-to-I²C capability. |
Compared with PCA9615DP and MAX31820, the SC18IM700IPW/S8HP uniquely delivers integrated UART-to-I²C translation with ASCII command abstraction, eliminating MCU firmware complexity for I²C peripheral access-making it irreplaceable in resource-constrained or legacy-UART-only designs.
Availability
SC18IM700IPW/S8HP is available at Aetrix Electronics and suitable for industrial control, medical instrumentation, and cellular handset design requiring stable component supply and long-term lifecycle support.
Supply support for SC18IM700IPW/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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The SC18IM700IPW/S8HP belongs to NXP's interface bridge product line, designed specifically to simplify I²C integration for microcontrollers lacking native I²C hardware-targeting cost-sensitive, space-constrained embedded systems.
FAQ
What is the primary function of the SC18IM700IPW/S8HP?
The SC18IM700IPW/S8HP is a UART-to-I²C bridge IC that enables microcontrollers with only UART interfaces to communicate with I²C peripherals. It operates as an I²C-bus master, handles all I²C protocol details-including arbitration, timing, and START/STOP generation-and accepts ASCII commands (e.g., 'S', 'P', 'R') via UART for simplified host control. The SC18IM700IPW/S8HP eliminates the need for software-based I²C bit-banging on the host MCU.
Does the SC18IM700IPW/S8HP support both standard and fast-mode I²C speeds?
Yes, the SC18IM700IPW/S8HP supports Fast Mode I²C up to 400 kbit/s, as confirmed by its dynamic timing specifications and functional description. It complies with the NXP I²C-bus specification for multi-master arbitration and repeated START conditions. The SC18IM700IPW/S8HP does not support standard-mode (100 kbit/s) as a separate configuration-the 400 kbit/s capability inherently covers standard-mode timing margins, and no lower-speed mode selection is required or documented.
How does the SC18IM700IPW/S8HP enter and exit power-down mode?
The SC18IM700IPW/S8HP enters power-down mode by receiving the ASCII command sequence 'Z' followed by hexadecimal bytes 0x5A and 0xA5. Upon entry, the WAKEUP pin transitions HIGH. To exit, the host must drive the WAKEUP pin LOW (using open-drain or push-pull logic), with a mandatory 1 kΩ pull-up resistor between WAKEUP and VDD. The SC18IM700IPW/S8HP draws 50–70 µA in this state, and internal oscillator stops-halting all UART and I²C activity until wake-up occurs.
What GPIO configurations are supported by the SC18IM700IPW/S8HP?
The SC18IM700IPW/S8HP supports four programmable GPIO modes per pin (GPIO0–GPIO7): quasi-bidirectional, push-pull, open-drain, and input-only. Configuration is controlled via PortConf1 (GPIO3–GPIO0) and PortConf2 (GPIO7–GPIO4) registers, with two bits per pin selecting the mode. The SC18IM700IPW/S8HP includes Schmitt-triggered inputs with glitch suppression across all modes, and 5 V tolerance applies to all GPIO inputs except SCL/SDA.
Is the SC18IM700IPW/S8HP pin-compatible with other members of the SC18IM700 family?
Yes, the SC18IM700IPW/S8HP shares identical pinout and functionality with all SC18IM700 variants in TSSOP16 packaging (e.g., SC18IM700IPW, SC18IM700IPW/S8), as confirmed by the ordering information table and pin configuration diagram. The '/S8HP' suffix denotes tape-and-reel packaging (REEL 13" Q4/T2) and standard marking-no electrical or pinout differences exist. The SC18IM700IPW/S8HP is fully interchangeable at the PCB level with other TSSOP16 SC18IM700 variants.
SC18IM700IPW/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:
- UART
- Standards:
- -
- Voltage - Supply:
- 2.4V ~ 3.6V
- Current - Supply:
- 9mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Grade:
- -
- Qualification:
- -
SC18IM700IPW/S8HP FAQ
1.How can I place an order for SC18IM700IPW/S8HP through Aetrix?
Please submit a Request for Quotation (RFQ) for SC18IM700IPW/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 SC18IM700IPW/S8HP reliable?
The price and inventory of SC18IM700IPW/S8HP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC18IM700IPW/S8HP is usually 5 days.
3.What payment methods are accepted for SC18IM700IPW/S8HP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC18IM700IPW/S8HP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC18IM700IPW/S8HP?
SC18IM700IPW/S8HP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC18IM700IPW/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 SC18IM700IPW/S8HP?
For technical support, including SC18IM700IPW/S8HP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC18IM700IPW/S8HP requirements.
6.How does Aetrix verify that SC18IM700IPW/S8HP is sourced from the original manufacturer or authorized distributors?
All SC18IM700IPW/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 SC18IM700IPW/S8HP meets industry standards.
7.What is the process for return or replacement of SC18IM700IPW/S8HP?
All SC18IM700IPW/S8HP units undergo pre-shipment inspection (PSI). If there is an issue with SC18IM700IPW/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 SC18IM700IPW/S8HP part is unused and in its original packaging.
Return procedure for SC18IM700IPW/S8HP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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