SCC2698B: Enhanced octal universal asynchronous receiver/transmitter (Octal UART)
The SCC2698B Enhanced Octal Universal Asynchronous Receiver/Transmitter (Octal UART) is a single chip MOS-LSI communications device that provides eight full-duplex asynchronous receiver/transmitter channels in a single package. It is fabricated with CMOS technology which combines the benefits of high density and low power consumption.
The operating speed of each receiver and transmitter can be selected independently as one of 26 fixed baud rates, a 16X clock derived from a programmable counter/timer, or an external 1X or 16X clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock inputs. The ability to independently program the operating speed of the receiver and transmitter make the Octal UART particularly attractive for dual-speed channel applications such as clustered terminal systems.
The receiver is quadruple buffered to minimize the potential of receiver overrun or to reduce interrupt overhead in interrupt driven systems. In addition, a handshaking (RTS/CTS) capability is provided to disable a remote UART transmitter when the receiver buffer is full.
The UART provides a power-down mode in which the oscillator is frozen but the register contents are stored. This results in reduced power consumption on the order of several magnitudes. The Octal UART is fully TTL compatible and operates from a single +5V power supply.
The SCC2698B is an upwardly compatible version of the 2698A Octal UART. In PLCC packaging, it is enhanced by the addition of receiver ready or FIFO full status outputs, and transmitter empty status outputs for each channel on 16 multipurpose I/O pins. The multipurpose pins of the 2698B RIO pins, thus DMA and modem control is provided.
SCC2698B: Product Block Diagram
sot189-2_3d
26 fixed rates: 50 to 38.4K baud
Non-standard rates to 115.2K baud
User-defined rates from the programmable counter/timer
associated with each of four blocks
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Enhanced octal universal asynchronous receiver/transmitter (Octal UART) (REV 4.0) PDF (198.0 kB) SCC2698B | 07 Aug 2006 |
Application Notes (5)
| Name/Description | Modified Date |
|---|---|
| Application of UART in GPS navigation system (REV 1.0) PDF (84.0 kB) AN10353 | 01 Mar 2005 |
| UART to Bluetooth interfacing (REV 2.0) PDF (205.0 kB) AN10307 | 11 Aug 2004 |
| AN10251 (REV 2.0) PDF (38.0 kB) AN10251 | 27 Oct 2003 |
| SCC2698B Octal Universal Asynchronous Receiver/Transmitter (OC) (REV 1.0) PDF (59.0 kB) AN410B | 27 Apr 1994 |
| SCC2698A Differences From The SCC2698B (REV 1.0) PDF (19.0 kB) AN421 | 27 Apr 1994 |
Brochures (1)
| Name/Description | Modified Date |
|---|---|
| NXP® High-speed UARTs and Bridge ICs (REV 1.0) PDF (5.7 MB) 75017552 | 03 Apr 2014 |
Package Information (1)
| Name/Description | Modified Date |
|---|---|
| plastic leaded chip carrier; 84 leads (REV 1.0) PDF (605.0 kB) SOT189-2 | 08 Feb 2016 |
Supporting Information (1)
| Name/Description | Modified Date |
|---|---|
| Footprint for wave soldering (REV 1.0) PDF (10.0 kB) PLCC-WAVE | 08 Oct 2009 |
Ordering Information
| Product | Status | Package version | Application | Operating Temperature (Cel) | Number of pins | Receiver/Transmitter type | Function |
|---|---|---|---|---|---|---|---|
| SCC2698BE1A84 | Active | SOT189-2 | Data Communication | -40~85 | 84 | Octal UARTs | Receivers/Transmitters |
| SCC2698BC1A84 | Active | SOT189-2 | Data Communication | 0~70 | 84 | Octal UARTs | Receivers/Transmitters |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCC2698BE1A84 | | SOT189-2 | PLCC-WAVE | Reel 13" Q1/T1 in Drypack | Active | SCC2698BE1A84,518 (9350 563 80518) | SCC2698BE1A84 | SCC2698BE1A84 |    | week 12, 2005 | 0.0 | 3.0 | 3.33E8 | 3 | 3 |
| Tube in Drypack | Active | SCC2698BE1A84,512 (9350 563 80512) | SCC2698BE1A84 | SCC2698BE1A84 | | week 12, 2005 | 0.0 | 3.0 | 3.33E8 | 3 | 3 | ||||
| SCC2698BC1A84 | | SOT189-2 | PLCC-WAVE | Reel 13" Q1/T1 in Drypack | Active | SCC2698BC1A84,518 (9339 762 50518) | SCC2698BC1A84 | SCC2698BC1A84 | | week 12, 2005 | 0.0 | 3.0 | 3.33E8 | 3 | 3 |
| Tube in Drypack | Active | SCC2698BC1A84,512 (9339 762 50512) | SCC2698BC1A84 | SCC2698BC1A84 | | week 12, 2005 | 0.0 | 3.0 | 3.33E8 | 3 | 3 |
- Application of UART in GPS navigation system SC28L92
- UART to Bluetooth interfacing SC28L92
- AN10251 SC28L92
- SCC2698B Octal Universal Asynchronous Receiver/Transmitter (OC) SCC2698B
- SCC2698A Differences From The SCC2698B SCC2698B
- NXP® High-speed UARTs and Bridge ICs SC28L92
- plastic leaded chip carrier; 84 leads SCC2698B
- Footprint for wave soldering SC28L92
- SCC2698B
- SCC2698B
