Overview
The SC28L92A1BS,551 is a 3.3 V/5.0 V Dual Universal Asynchronous Receiver/Transmitter (DUART) produced by NXP USA Inc. This component is designed as a pin and function replacement for the SCC2692 and SC26C92, offering enhanced features and deeper FIFOs. It operates within a temperature range of −40 °C to +85 °C and supports both 68xxx and 80xxx bus interfaces. Although the SC28L92 is no longer in manufacture, it remains a significant component in legacy systems and applications requiring dual asynchronous communication channels.
Key Specifications
| Parameter | Description |
|---|---|
| Voltage Supply | 3.3 V ± 10% or 5.0 V ± 10% |
| Temperature Range | −40 °C to +85 °C |
| Package Type | 48HVQFN (SC28L92A1BS) |
| FIFO Depth | 16 characters for each receiver and transmitter |
| Bus Interface | Pin programming selects 68xxx or 80xxx bus interface |
| Data Format | 5 to 8 data bits plus parity; odd, even, no parity, or force parity |
| Stop Bits | 1 stop bit |
| Oscillator | On-chip crystal oscillator |
| Power Mode | Power-down mode |
| Receiver Mode | Receiver time-out mode |
Key Features
- Dual full-duplex independent asynchronous receiver/transmitters
- 16 character FIFOs for each receiver and transmitter
- Programmable data format: 5 to 8 data bits plus parity; odd, even, no parity, or force parity
- On-chip crystal oscillator
- Power-down mode and receiver time-out mode
- Single 3.3 V or 5 V power supply
- Watchdog timer for each receiver
- Programmable receiver and transmitter interrupts
- Extended baud rate and overall faster speeds
Applications
The SC28L92A1BS,551 is suitable for various applications requiring dual asynchronous communication channels, such as:
- Industrial automation systems
- Embedded systems
- Communication networks
- Legacy system upgrades or maintenance
- Any application needing robust and flexible serial communication capabilities
Q & A
- What is the voltage supply range for the SC28L92A1BS,551? The voltage supply range is 3.3 V ± 10% or 5.0 V ± 10%.
- What are the supported bus interfaces for this component? The SC28L92A1BS,551 supports both 68xxx and 80xxx bus interfaces through pin programming.
- What is the depth of the FIFOs in the SC28L92A1BS,551? Each receiver and transmitter has a 16 character FIFO.
- Does the SC28L92A1BS,551 have an on-chip oscillator? Yes, it features an on-chip crystal oscillator.
- What are the power modes available for this component? The SC28L92A1BS,551 has a power-down mode and a receiver time-out mode.
- Is the SC28L92A1BS,551 still in production? No, the SC28L92 is no longer manufactured.
- What are the key differences between the SC28L92 and its predecessors (SCC2692 and SC26C92)? The SC28L92 has deeper FIFOs, a watchdog timer for each receiver, mode register 0, extended baud rate, and overall faster speeds.
- What types of parity are supported by the SC28L92A1BS,551? It supports odd, even, no parity, or force parity.
- Can the SC28L92A1BS,551 operate in different data formats? Yes, it can operate with 5 to 8 data bits plus parity.
- What is the package type for the SC28L92A1BS,551? The package type is 48HVQFN.
