SC26C92: Dual universal asynchronous receiver/transmitter (DUART)
The SC26C92 is a pin and function replacement for the SCC2692 and SCN2681 with added features and deeper FIFOs. Its configuration on power up is that of the 2692. Its differences from the 2692 are: 8 character receiver, 8 character transmit FIFOs, watch dog timer for each receiver, mode register 0 is added, extended baud rate and overall faster speeds, programmable receiver and transmitter interrupts. (The SCC2692 is not being discontinued.)
The Philips Semiconductors SC26C92 Dual Universal Asynchronous Receiver/Transmitter (DUART) is a single-chip CMOS-LSI communications device that provides two full-duplex asynchronous receiver/transmitter channels in a single package. It interfaces directly with microprocessors and may be used in a polled or interrupt driven system and provides modem and DMA interface.
The operating mode and data format of each channel can be programmed independently. Additionally, each receiver and transmitter can select its operating speed as one of 27 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 DUART particularly attractive for dual-speed channel applications such as clustered terminal systems.
Each receiver and transmitter is buffered by eight character FIFOs to minimize the potential of receiver overrun, transmitter underrun and to reduce interrupt overhead in interrupt driven systems. In addition, a flow control capability is provided via RTS/CTS signaling to disable a remote transmitter when the receiver buffer is full.
Also provided on the SC26C92 are a multipurpose 7-bit input port and a multipurpose 8-bit output port. These can be used as general purpose I/O ports or can be assigned specific functions (such as clock inputs or status/interrupt outputs) under program control.
The SC26C92 is available in three package versions: 40-pin 0.6" wide DIP, a 44-pin PLCC and 44-pin plastic quad flat pack (PQFP).
sot307-2_3d
Data Sheets (1)
Application Notes (4)
Brochures (1)
Package Information (2)
Supporting Information (2)
Ordering Information
| Product | Status |
|---|
| SC26C92C1B | Active |
| SC26C92C1A | Active |
| SC26C92A1A | Active |
| SC26C92A1B | Active |
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 |
|---|
| SC26C92A1A |  | SOT187-2 | PLCC-WAVE | Tube in Drypack | Active | SC26C92A1A,512
(9351 939 90512) | SC26C92A1A | SC26C92A1A |    | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| Tube in Drypack | Active | SC26C92A1A,529
(9351 939 90529) | SC26C92A1A | SC26C92A1A | | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| Reel 13" Q1/T1 in Drypack | Active | SC26C92A1A,518
(9351 939 90518) | SC26C92A1A | SC26C92A1A | | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| SC26C92C1A | | SOT187-2 | PLCC-WAVE | Tube in Drypack | Active | SC26C92C1A,512
(9350 515 10512) | SC26C92C1A | SC26C92C1A | | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| Tube in Drypack | Active | SC26C92C1A,529
(9350 515 10529) | SC26C92C1A | SC26C92C1A | | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| Reel 13" Q1/T1 in Drypack | Active | SC26C92C1A,518
(9350 515 10518) | SC26C92C1A | SC26C92C1A | | week 12, 2005 | 0.0 | 6.0 | 1.67E8 | 3 | 3 |
| SC26C92C1B | | SOT307-2 | QFP-SQFP-TQFP-WAVE | Reel 13" Q2/T3 in Drypack | Active | SC26C92C1B,528
(9352 487 90528) | SC26C92C1B | SC26C92C1B |  | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
| Tray, Bakeable, Multiple in Drypack | Active | SC26C92C1B,557
(9352 487 90557) | SC26C92C1B | SC26C92C1B | | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
| Tray, Bakeable, Single in Drypack | Active | SC26C92C1B,551
(9352 487 90551) | SC26C92C1B | SC26C92C1B | | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
| SC26C92A1B | | SOT307-2 | QFP-SQFP-TQFP-WAVE | Reel 13" Q2/T3 in Drypack | Active | SC26C92A1B,528
(9352 630 28528) | SC26C92A1B | SC26C92A1B | | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
| Tray, Bakeable, Multiple in Drypack | Active | SC26C92A1B,557
(9352 630 28557) | SC26C92A1B | SC26C92A1B | | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
| Tray, Bakeable, Single in Drypack | Active | SC26C92A1B,551
(9352 630 28551) | SC26C92A1B | SC26C92A1B | | week 13, 2005 | 0.0 | 6.0 | 1.67E8 | 2 | 3 |
