Overview
The SC18IM704PWJ, produced by NXP USA Inc., is a UART to I²C-bus bridge IC designed to facilitate communication between a microcontroller or microprocessor's standard UART port and the serial I²C-bus. This bridge enables the integration of I²C-bus functionality in systems that lack native I²C support, enhancing the versatility and functionality of the host system.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TSSOP16 (plastic thin shrink small outline package; 16 leads; body width 4.4 mm with 0.65 mm pitch) |
| UART Interface | Full-functional advanced UART with TX and RX pins, default baud rate of 9600 bit/s, adjustable via Baud Rate Generator (BRG) registers |
| I²C-bus Interface | I²C-bus data pin (SDA) and I²C-bus clock output pin (SCL) |
| GPIO | Programmable I/O pins (GPIO0 to GPIO7) |
| Power Consumption | Low-power mode available, with internal oscillator stopped in power-down mode |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 |
| Latch-up Testing | Exceeds 100 mA per JEDEC Standard JESD78 |
Key Features
- Acts as a bridge between UART and I²C-bus, enabling I²C-bus controller support in systems without native I²C capabilities
- Full-functional advanced UART with adjustable baud rate
- Programmable GPIO pins for additional functionality
- Low-power mode with power-down character sequence (Z, 0x5A, 0xA5) to enter deep power-down mode
- ESD protection and latch-up testing compliance
- Supports I²C-bus instrumentation and control, industrial control, medical equipment, and more
Applications
- I²C-bus controller support in various systems
- I²C-bus instrumentation and control
- Industrial control systems
- Medical equipment
- Cellular telephones and handheld computers
Q & A
- What is the primary function of the SC18IM704PWJ?
The SC18IM704PWJ acts as a bridge between the standard UART port of a microcontroller or microprocessor and the serial I²C-bus.
- What is the default baud rate of the UART interface?
The default baud rate is 9600 bit/s, but it can be adjusted via the Baud Rate Generator (BRG) registers.
- How does the device enter power-down mode?
The device enters power-down mode by sending the power-down character sequence (Z, 0x5A, 0xA5) followed by the two defined bytes.
- What type of package is the SC18IM704PWJ available in?
The SC18IM704PWJ is available in a TSSOP16 package.
- What are some of the key applications of the SC18IM704PWJ?
Key applications include I²C-bus instrumentation and control, industrial control, medical equipment, cellular telephones, and handheld computers.
- Does the SC18IM704PWJ have programmable GPIO pins?
- What is the ESD protection level of the SC18IM704PWJ?
The ESD protection exceeds 2000 V HBM per JESD22-A114.
- How does the device exit deep power-down mode?
The device exits deep power-down mode when any character is sent to the UART Rx pin.
- What is the purpose of the reset pin on the SC18IM704PWJ?
The reset pin is used for hardware reset input.
- Are there any evaluation boards available for the SC18IM704PWJ?
