XR16L580 Exar Corporation, XR16L580 Datasheet - Page 42

• Manufacturer Part Number: XR16L580
• Description: Smallest 2.25 to 5.5V Uart With 16-Byte Fifo And Power-save
• Manufacturer: Exar Corporation

XR16L580
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
F
IGURE
(Loading data
*INT is cleared when the ISR is read or when TX FIFO fills up to the trigger level.
into FIFO)
TX
INT*
IOW#
23. T
TX FIFO
Empty
enabled
RANSMIT
IER[1]
R
EADY
Start
Bit
ISR is read
S
I
NTERRUPT
D0:D7
TX FIFO fills up
to trigger level
Stop
Bit
T
T
IMING
S
D0:D7
[FIFO M
T
S
42
D0:D7
T
ODE
WRI
]
T
T
SI
T
S
D0:D7
below trigger level
TX FIFO drops
T
S
ISR is read
D0:D7
T
áç
áç
áç
áç
S
Last Data Byte
Transmitted
D0:D7
REV. 1.2.0
T
TX INT