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SC28L201
General description
The SC28L201 is a high performance UART. Its functional and programming features closely match but greatly extend those of previous Philips UARTs. Its configuration on power-up is similar that of the SC26C92. Its differences from the previous Philips UARTs are: 256-character receiver, 256-character transmit FIFOs, 3.3 V and 5 V compatibility, 8 I/O ports for arbitrating interrupt system and overall faster bus and data speeds and is fabricated in an advanced 0.5 micron CMOS process.
It is a member of the IMPACT line of data communications parts.
Pin programming will allow the device to operate with either the Motorola or Intel bus interface by changing the function of some pins (reset is inverted, DACKN, and IACKN enabled, for example).
The Philips Semiconductors SC28L201 Universal Asynchronous Receiver/Transmitter (UART) is a single-chip CMOS-LSI communications device that provides a full-duplex asynchronous receiver/transmitter channel in a single package. It interfaces directly with microprocessors and may be used in a polled or interrupt driven system. The use of the Interrupt system provides intelligent interrupt vectors.
The operating mode and data format of the channel may be programmed independently. Additionally, the receiver and transmitter can select its operating speed as one of twenty-seven fixed baud rates; a 16x clock derived from one of two programmable counter/timers, 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 UART particularly attractive for dual-speed channel applications such as clustered terminal systems and bridges.
Each receiver and transmitter is buffered by 256-character FIFOs to nearly eliminate the potential of receiver overrun, transmitter underrun and to reduce interrupt overhead in interrupt driven systems. In addition, a flow control capability (Xon/Xoff and RTS/CTS) is provided to disable a remote transmitter when the receiver buffer is full.
Also provided on the SC28L201 is a multipurpose 8-bit I/O for the channel. These can be used as general-purpose I/O ports or can be assigned specific functions (such as clock inputs or status and interrupt outputs) under program control. Normally they will be used for modem control and DMA interface. All ports have change of state detectors and input sections are always active making output signals available to the internal circuits and the control processor.
The SC28L201 is available in a TSSOP48 package. For other package options, contact Philips.
Features
- Member of IMPACT family: 3.3 V or 5.0 V, -40 Cel to +85 Cel and 80xxx or 68000 bus interface (I/M modes)
- Bit-by-bit real time transmission error check for high data integrity systems
- Full-duplex independent asynchronous receiver/transmitter
- 256 character FIFOs for receiver and transmitter
- Powers up to 9600 baud, 8 bits, no parity, 1 stop bit, interrupt disabled, all I/O set to input
- Pin programming to 68000 or 80xxx bus interface
- Three character recognition system, used as:
- General purpose character recognition
- Xon/Xoff character recognition
- Address recognition Wake-up (multi-drop or 9-bit) mode
- System provides 4 levels of automation on a recognition event
- Programmable data format
- 5 to 8 data bits plus parity and 9-bit mode
- Odd, even, no parity, or force parity
- 9/16, 1, 1.5 or 2 stop bits
- 16-bit programmable Counter/Timer
- Programmable baud rate for receiver and transmitter selectable from:
- 27 fixed rates: 50 Bd to 2.0 MBd (includes MIDI rate)
- Other baud rates via external clocks and C/T
- Programmable user-defined rates derived from a programmable Counter/Timer
- External 1x or 16x clock
- Parity, framing, and overrun error detection
- Line break detection and generation; false start bit detection
- Programmable channel mode
- Normal (full-duplex)
- Automatic echo
- Local loopback
- Remote loopback
- Multi-drop mode (also called 'Wake-up' or '9-bit')
- Multifunction 13-bit I/O input port
- Can serve as clock or control inputs
- Change-of-state detection on eight inputs
- Inputs have typically > 100 M Ohm pull-up resistors
- Modem and DMA interface
- Versatile arbitrating interrupt system
- Interrupt system totally supports single query polling
- Output port can be configured to provide a total of up to six separate interrupt type outputs that may be wire-ORed (switched to open-drain)
- Each FIFO can be independently programmed for any of 256 interrupt levels
- Watchdog timer for receiver
- Maximum data transfer rates: 1x clock = 3 Mbit/s; 16x clock = 3.125 Mbit/s
- Automatic Wake-up mode for multi-drop applications
- Start-end break interrupt/status
- Detects break which originates in the middle of a character
- On-chip crystal oscillator
- Power-down mode at less than 10 uA
- Receiver Time-out mode
- Single +3.3 V +- 10 pct. or +5 V +- 10 pct. power supply
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SC28L201A1DGG | SC28L201A1DGG | 9352 778 24112 | Volume production | SOT362-1
(TSSOP48) | Tube | Standard Marking | SC28L201A1DGG
| Always Pb-free |
| SC28L201A1DGG | SC28L201A1DGG-T | 9352 778 24118 | Volume production | SOT362-1
(TSSOP48) | Reel Pack, SMD, 13" | Standard Marking | SC28L201A1DGG
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| SC28L201A1DGG | 9352 778 24112 | 5.5200 | NA | DIGI-KEY CORPORATION | 748 | 1/6/2009 | Buy online | not available | |
| SC28L201A1DGG | 9352 778 24118 | 5.5200 | not available |
Applications
Related applications
Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality
Design support
Application Notes
AN10307_2;
UART to Bluetooth interfacing (11-Aug-04)
Support Documents
75015765;
NXP Advanced UARTs SC28L201 and SC28L202 (2006-11-01)Disclaimer
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