xr16l2550im Exar Corporation, xr16l2550im Datasheet - Page 46

• Manufacturer Part Number: xr16l2550im
• Description: Industry Smallest Package Uart With 2.25v To 5.5v Operation
• Manufacturer: Exar Corporation

XR16L2550
REV. 1.1.2
ABSOLUTE MAXIMUM RATINGS...................................................................................34
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%) 34
ELECTRICAL CHARACTERISTICS ................................................................................34
PACKAGE DIMENSIONS (48 PIN TQFP - 7 X 7 X 1 MM)...............................................41
PACKAGE DIMENSIONS (44 PIN PLCC) .......................................................................42
PACKAGE DIMENSIONS (32 PIN QFN - 5 X 5 X 0.9 MM)..............................................43
T
ABLE OF
DC E
AC E
R
4.5 FIFO CONTROL REGISTER (FCR) - WRITE-ONLY ...................................................................................... 25
4.6 LINE CONTROL REGISTER (LCR) - READ/WRITE ...................................................................................... 26
4.7 MODEM CONTROL REGISTER (MCR) OR GENERAL PURPOSE OUTPUTS CONTROL - READ/WRITE 27
4.8 LINE STATUS REGISTER (LSR) - READ ONLY ........................................................................................... 28
4.9 MODEM STATUS REGISTER (MSR) - READ ONLY .................................................................................... 29
4.10 SCRATCH PAD REGISTER (SPR) - READ/WRITE .................................................................................... 30
4.11 BAUD RATE GENERATOR REGISTERS (DLL AND DLM) - READ/WRITE .............................................. 30
4.12 DEVICE IDENTIFICATION REGISTER (DVID) - READ ONLY .................................................................... 30
4.13 DEVICE REVISION REGISTER (DREV) - READ ONLY .............................................................................. 31
4.14 ENHANCED FEATURE REGISTER (EFR) .................................................................................................. 31
4.15 SOFTWARE FLOW CONTROL REGISTERS (XOFF1, XOFF2, XON1, XON2) - READ/WRITE ................ 32
Unless otherwise noted: TA=-40o to +85oC, Vcc is 2.25V to 5.5V, .......................................................................... 35
70 pF load where applicable...................................................................................................................................... 35
EVISION
T
T
T
T
T
F
F
F
F
F
F
F
F
F
F
ABLE
ABLE
ABLE
ABLE
ABLE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
LECTRICAL
LECTRICAL
4.4.1 INTERRUPT GENERATION: ...................................................................................................................................... 24
4.4.2 INTERRUPT CLEARING: ........................................................................................................................................... 24
9: I
10: R
11: P
12: S
13: UART RESET CONDITIONS FOR CHANNEL A AND B............................................................................................ 33
14. C
15. M
17. D
16. D
18. R
19. T
20. R
21. R
22. T
23. T
H
C
ISTORY
NTERRUPT
ONTENTS
ECEIVE
ARITY SELECTION
OFTWARE
RANSMIT
RANSMIT
RANSMIT
LOCK
ATA
ATA
ECEIVE
ECEIVE
ECEIVE
ODEM
C
C
HARACTERISTICS
HARACTERISTICS
B
B
.......................................................................................................................................44
T
US
US
FIFO T
I
IMING
NPUT
S
R
R
R
F
R
R
R
OURCE AND
W
R
EADY
EADY
EADY
LOW
EADY
EADY
EADY
EAD
RITE
............................................................................................................
/O
............................................................................................................................................................. 36
RIGGER
UTPUT
& I
& I
& I
C
T
........................................................................................................................................................ 27
T
& I
& I
& I
ONTROL
IMING
IMING
NTERRUPT
NTERRUPT
NTERRUPT
NTERRUPT
NTERRUPT
NTERRUPT
P
T
L
.............................................................................................................................................. 37
RIORITY
EVEL
IMING
............................................................................................................................................. 37
F
..............................................................................................................34
..............................................................................................................35
UNCTIONS
S
T
T
T
F
IMING
T
IMING
IMING
T
T
ELECTION
OR
L
IMING
IMING
IMING
EVEL
C
HANNELS
[N
[FIFO M
[FIFO M
........................................................................................................................ 31
....................................................................................................................... 24
[N
[FIFO M
[FIFO M
ON
ON
................................................................................................................... 26
-FIFO M
-FIFO M
ODE
ODE
A & B ................................................................................................. 36
ODE
ODE
II
, DMA D
, DMA E
ODE
, DMA M
, DMA M
ODE
]
FOR
]
FOR
NABLED
ISABLED
LOW VOLTAGE DUART WITH 16-BYTE FIFO
ODE
ODE
C
C
HANNELS
HANNELS
D
E
]
NABLED
]
ISABLED
FOR
FOR
C
A & B ......................................................... 38
C
A & B ....................................................... 38
HANNELS
]
HANNELS
]
FOR
FOR
C
C
HANNELS
HANNELS
A & B......................................... 39
A & B........................................ 39
A & B ............................ 40
A & B............................ 40
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