參數(shù)資料
型號(hào)： XR16C850CJ
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control
中文描述： 1 CHANNEL(S), 2.25M bps, SERIAL COMM CONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 15/55頁(yè)
文件大小： 331K
代理商： XR16C850CJ
XR16C850
15
Rev. 1.20
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
AEN*
IOR*
IOW*
RESET
D0
D1
D2
D3
D4
D5
D6
D7
-IOR
-IOW
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
RESET
-AEN
1
3
5
2
4
6
J1
HDR2X3
S1
S2
S3
IRQ4
IRQ3
IRQn
INTA
INTB
INTC
SEL
PC Mode Interface (available on 44/48/52 pin ver-
sions only)
The PC mode is selected by making the SEL pin a logic
0 (GND). When the PC mode is selected, the 850
eliminates the external address decode logic circuitry
that is required. The PC mode is accomplished by
decoding the PC ISA bus address bits, A3 through A9
inside the 850. These addresses select the standard
PC COM ports: COM-1 (3F8-3FF Hex), COM-2 (2F8-
2FF Hex), COM-3 (3E8-3EF Hex), and COM-4 (2E8-
2EF Hex). Three inputs (S1-S3) are generally exter-
nally jumpered (logic 1 or logic 0) for selecting the oper
ating port. The selection bits are also associated with
a given PC interrupt. Interrupts IRQA, IRQB, and IRQC
function as three state outputs. MCR bit-3 must be set
to a logic 1 to activate these interrupts. The mapping for
the COM port 1-4 and their associated interrupt selec-
tions, IRQx are listed in Table 2, below. Figure 5 shows
a typical connection to the PC ISA bus.
In addition to the COM port addresses, the 850 de-
codes two additional printer addresses. These address
decodes select LPT-1 (printer port-1, 378-37F Hex), or
LPT-2 (printer port-2, 278-27F Hex). These ports are
intended to be compatible with PC or PC compatible
computer printer ports.
Figure 5. PC MODE INTERFACE
相關(guān)PDF資料
PDF描述
XR16C850CM UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16C850CJ-F 功能描述:UART 接口集成電路 UARTW/128BYTE FIFO 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
XR16C850CJTR-F 制造商:Exar Corporation 功能描述:UART 1-CH 128Byte FIFO 3.3V/5V 44-Pin PLCC T/R 制造商:Exar Corporation 功能描述:XR16C850CJTR-F
XR16C850CM 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16C850CM-0A-EVB 功能描述:UART 接口集成電路 Supports C850 48 ld TQFP, 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
XR16C850CM-F 功能描述:UART 接口集成電路 UARTW/128BYTE FIFO 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
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