參數(shù)資料
型號: XR16C2850IM
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL
中文描述: 2 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, EIAJ, TQFP-48
文件頁數(shù): 35/43頁
文件大小: 611K
代理商: XR16C2850IM
XR16C2850
REV. 2.0.0
3.3V AND 5V DUART WITH 128-BYTE FIFO
á
35
F
IGURE
18. R
ECEIVE
R
EADY
& I
NTERRUPT
T
IMING
[N
ON
-FIFO M
ODE
]
FOR
C
HANNELS
A & B
RX
RXRDY#
IOR#
(Reading data
out of RHR)
INT
D0:D7
Start
Bit
D0:D7
Stop
Bit
D0:D7
T
SSR
1 Byte
in RHR
Active
Data
Ready
Active
Data
Ready
Active
Data
Ready
1 Byte
in RHR
1 Byte
in RHR
T
SSR
T
SSR
RXNFM
T
RR
T
RR
T
RR
T
SSR
T
SSR
T
SSR
F
IGURE
19. T
RANSMIT
R
EADY
& I
NTERRUPT
T
IMING
[N
ON
-FIFO M
ODE
]
FOR
C
HANNELS
A & B
TX
(Unloading)
TXRDY#
IOW#
(Loading data
into THR)
INT*
D0:D7
Start
Bit
D0:D7
Stop
Bit
D0:D7
T
WT
TXNonFIFO
T
WT
T
WT
T
WRI
T
WRI
T
WRI
T
SRT
T
SRT
T
SRT
*INT is cleared when the ISR is read or when data is loaded into the THR.
ISR is read
ISR is read
ISR is read
IER[1]
enabled
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