xr16l2550im Exar Corporation, xr16l2550im Datasheet - Page 14
xr16l2550im
Manufacturer Part Number
xr16l2550im
Description
Industry Smallest Package Uart With 2.25v To 5.5v Operation
Manufacturer
Exar Corporation
Datasheet
1.XR16L2550IM.pdf
(46 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XR16L2550IM
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
Company:
Part Number:
xr16l2550im-F
Manufacturer:
LT
Quantity:
350
Company:
Part Number:
xr16l2550im-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
xr16l2550im-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
Company:
Part Number:
xr16l2550imTR-F
Manufacturer:
Exar Corporation
Quantity:
10 000
XR16L2550
LOW VOLTAGE DUART WITH 16-BYTE FIFO
Automatic RTS hardware flow control is used to prevent data overrun to the local receiver FIFO. The RTS#
output is used to request remote unit to suspend/resume data transmission. The auto RTS flow control
features is enabled to fit specific application requirement (see
•
•
If using the Auto RTS interrupt:
•
Automatic CTS flow control is used to prevent data overrun to the remote receiver FIFO. The CTS# input is
monitored to suspend/restart the local transmitter. The auto CTS flow control feature is selected to fit specific
application requirement (see
•
If using the Auto CTS interrupt:
•
2.13
2.14
Enable auto RTS flow control using EFR bit-6.
The auto RTS function must be started by asserting RTS# output pin (MCR bit-1 to logic 1 after it is enabled).
Enable RTS interrupt through IER bit-6 (after setting EFR bit-4). The UART issues an interrupt when the
RTS# pin makes a transition from low to high: ISR bit-5 will be set to logic 1.
Enable auto CTS flow control using EFR bit-7.
Enable CTS interrupt through IER bit-7 (after setting EFR bit-4). The UART issues an interrupt when the
CTS# pin is de-asserted (HIGH): ISR bit-5 will be set to 1, and UART will suspend transmission as soon as
the stop bit of the character in process is shifted out. Transmission is resumed after the CTS# input is re-
asserted (LOW), indicating more data may be sent.
Auto RTS (Hardware) Flow Control
Auto CTS Flow Control
Figure
11):
14
Figure
11):
REV. 1.1.2