ST16C2550CQ48 EXAR [Exar Corporation], ST16C2550CQ48 Datasheet - Page 33

• Manufacturer Part Number: ST16C2550CQ48
• Description: 2.97V TO 5.5V DUART WITH 16-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

xr
REV. 4.4.0
F
IGURE
(Unloading)
(Loading data
*INT is cleared when the ISR is read or when there is at least one character in the FIFO.
22. T
into FIFO)
TX
INT*
TXRDY#
IOW#
RANSMIT
TX FIFO
Empty
enabled
IER[1]
R
EADY
Start
& I
Bit
ISR is read
S
D0:D7
NTERRUPT
T
WRI
Stop
Bit
T
longer empty
TX FIFO no
T
S
IMING
D0:D7
[FIFO M
T
S
33
TX FIFO
Full
D0:D7
ODE
T
, DMA M
T
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
SRT
T
S
D0:D7
ODE
T
WT
T
E
S
NABLED
D0:D7
T
]
empty location
FOR
At least 1
T
in FIFO
SI
C
S
HANNELS
Last Data Byte
Transmitted
D0:D7
TXDMA
TX FIFO
ST16C2550
Empty
T
A & B