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Part: EI16C450
Category:
Communication
-> UARTs
Description: Universal Asynchronous Receiver Transmitter (UART)
Company: IMP, Inc.
Datasheet: Download EI16C450 datasheet File size : 74 kB
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Datasheet text preview:
Ei16C450 UART
Semiconductor, Inc.
FEATURES
· · · · 5V Operation Full duplex asynchronous receiver and transmitter E a s i l y interfaces to most popular microprocessors Adds or deletes standard asynchronous communication bits (start, stop, and parity ) to or from a serial data stream Independently controlled transmitter, receiver, line status, and data set interrupts Programmable baud rate generator allows division of any input clock by 1 to (216-1) and generates the internal 16 x clock Independent receiver clock input MODEM control functions (CTS, RTS, DSR, DTR, RI, and DCD) Fully programmable serial interface characteris tics: - 5, 6, 7, or 8 bit characters - Even, odd, or no-parity bit generation and detection - 1, 1.5, or 2 stop bit generation - Baud generation (DC to 56k baud) · False start bit detection
· · · ·
Complete status reporting capabilities Tri-State® TTL drive capabilities for bi-direc tional data bus and control bus Line break generation and detection Internal diagnostic capabilities: - Loopback controls for communications link fault isolation - Break, parity overrun, and framing error simulation
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Fully prioritized interrupt systems controls
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DESCRIPTION
The Epic Ei16C450 Universal Asynchronous Receiver Transmitter (UART) is a CMOS-VLSI communication device in a single package. T h e UART p e r f o r m s serial to parallel conversion o n data characters received from a peripheral device or a MODEM, and parallel-to-serial conversions on data characters received from the CPU. The CPU can read the complete status of the UART at any time during the functional operation. Status information reported includes the type and condition of the transfer operation being performed by the UART, as well as any error conditions (parity, overrun, framing, or break detect).
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Part Numbers May Be Marked With "IMP" or "Ei."
PIN CONFIGURATION
DCD · DSR · CTS · 38 VCC N.C.
CSOUT
IOW ·
IOW ·
GND
IOR ·
N.C.
DDIS ·
XTAL1
40-PIN DIP
44-PIN PLCC
48-PIN TQFP
5 For additional information, contact IMP, Inc. at 408.432.9100 or visit www.impweb.com
IMP, Inc. acquired Epic products on January 26, 2001. (see press release at http://www.impweb.com/PRESS/PR012601.htm)
XTAL2
AS ·
N.C.
D0 D1 D2 D3 D4 D5 D6 D7 RCLK SIN SOUT CS0 CS1 CS2· BAUDOUT· XTAL1 XTAL2 DOSTR· DOSTR VSS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
E i 1 6 C 4 5 0
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
VCC RI· DCD· DSR· CTS· MR OUT1· DTR· RTS· OUT2· INTRPT NC A0 A1 A2 ADS· CSOUT DDIS DISTR DISTR·
48
47
46
45
44
43
42
41
40
39
D4 D3 D2 D1 D0 NC VCC RI· DCD· CDSR· CTS·
37 36 35 34 33 32
N.C.
D4
D3
D2
D1
D0
RI
N.C. D5
1 2 3 4 5 6 7 8 9 10 11 12 16 17 19 22 20 21 13 14 15 18 23 24
N.C. RESET OP1 · DTR · RTS · OP2 · INT N.C. A0 A1 A2 N.C.
6 5 4 3 2 1 44 43 42 41 40
D5 D6 D7 RCLK SIN NC SOUT CS0 CS1 CS2· BAUDOUT·
7 8 9 10 11 12 13 14 15 16 17
Ei16C450
39 38 37 36 35 34 33 32 31 30 29
MR OUT1· DTR· RTS· OUT2· NC INTRPT NC A0 A1 A2
D6 D7 RCLK N.C. RX TX CS0 CS1 CS2 ·
Ei16C450
31 30 29 28 27 26 25
18 19 20 21 22 23 24 25 26 27 28
BAUDOUT ·
XTAL1 XTAL2 DOSTR· DOSTR VSS NC DISTR· DISTR DDIS CSOUT ADS·
IOR
Others parts begin by ei
EI-1
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