- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376453 > XR16C2852 (Exar Corporation) 3.3V AND 5V DUART WITH 128-BYTE FIFO PDF資料下載
參數(shù)資料
| 型號： | XR16C2852 |
| 廠商： | Exar Corporation |
| 英文描述： | 3.3V AND 5V DUART WITH 128-BYTE FIFO |
| 中文描述： | 3.3V和5V杜阿爾特128字節(jié)FIFO |
| 文件頁數(shù)： | 16/42頁 |
| 文件大?。?/td> | 574K |
| 代理商： | XR16C2852 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁
á
3.3V AND 5V DUART WITH 128-BYTE FIFO
XR16C2852
REV. 2.0.0
16
2.20 S
LEEP
M
ODE
WITH
A
UTO
W
AKE
-U
P
The 2852 supports low voltage system designs,
hence, a sleep mode is included to reduce its power
consumption when the chip is not actively used. With
EFR bit-4 and IER bit-4 of both channels enabled (set
to a logic 1), the 2852 DUART enters sleep mode
when no interrupt is pending for both channels. The
2852 stops its crystal oscillator to further conserve
power in the sleep mode. User can check the XTAL2
pin for no clock output as an indication that the device
has entered the sleep mode. The 2852 resumes nor-
mal operation by any of the following: a receive data
start bit transition (logic 1 to 0), a change of logic
state on any of the modem or general purpose input
pins: CTS#, DSR#, CD#, RI# or a transmit data byte
is loaded to the THR/FIFO by the user. If the 2852 is
awakened by one of the above conditions, it will re-
turn to the sleep mode automatically after all inter-
rupting condition have been serviced and cleared. In
any case, the sleep mode will not be entered while an
interrupt is pending from channel A or B. The 2852
will stay in the sleep mode of operation until it is dis-
abled by setting IER bit-4 to a logic 0.
A word of caution: owing to the starting up delay of
the crystal oscillator after waking up from sleep
mode, the first few receive characters may be lost. Al-
so, make sure the RX A/B inputs are idling at logic 1
or “marking” condition during sleep mode to avoid re-
ceiving a “break” condition upon the restart. This may
occur when the extermal interface transceivers (RS-
232, RS-485 or another type) are also put to sleep
mode and can not maintain the “marking” condition.
To avoid this, the system design engineer can use a
47k ohm pull-up resistor on the RXA and RXB pins.
F
IGURE
12. I
NFRARED
T
RANSMIT
D
ATA
E
NCODING
AND
R
ECEIVE
D
ATA
D
ECODING
Character
Data Bits
S
S
0
0
0
0
0
1
1
1
1
1
Bit Time
1/16 Clock Delay
IRdecoder-1
RX Data
Receive
IR Pulse
(RX pin)
Character
Data Bits
S
S
0
0
0
0
0
1
1
1
1
1
TX Data
Transmit
IR Pulse
(TX Pin)
Bit Time
1/2 Bit Time
3/16 Bit Time
IrEncoder-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XR16C2852CJ | 3.3V AND 5V DUART WITH 128-BYTE FIFO |
| XR16C2852IJ | 3.3V AND 5V DUART WITH 128-BYTE FIFO |
| XR16C850CJ | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| XR16C850CM | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| XR16C850CP | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16C2852_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS |
| XR16C2852CJ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16C2852CJ-0A-EB | 功能描述:UART 接口集成電路 Supports C2852 44 ld PLCC, ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR16C2852CJ-F | 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR16C2852CJTR-F | 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。