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| 型号： | XR16C850CJ-F |
| 厂商： | Exar Corporation |
| 文件页数： | 45/56页 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 128B 44PLCC |
| 标准包装： | 27 |
| 特点： | * |
| 通道数： | 1，UART |
| FIFO's： | 128 字节 |
| 规程： | RS485 |
| 电源电压： | 2.97 V ~ 5.5 V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 管件 |
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xr
XR16C850
REV. 2.3.1
2.97V TO 5.5V UART WITH 128-BYTE FIFO
5
BAUD-
OUT#
17
12
O
Baud Rate Generator Output (active low). This pin provides the 16X clock of the
selected data rate from the baud rate generator. The RCLK pin must be connected
externally to BAUDOUT# when the receiver is operating at the same data rate.
When the PC mode is selected, the baud rate generator clock output is internally
connected to the RCLK input. This pin then functions as the printer port decode
logic output (LPT1#), see
DDIS#
26
22
O
Drive Disable Output. This pin goes to a logic 0 whenever the host CPU is reading
data from the 850. It can control the direction of a data bus transceiver between the
CPU and 850 or other logic functions. If 16 bit bus mode is selected, this pin
becomes D12. During PC Mode, this pin becomes LPT2#.
OP2#
35
31
O
Output Port 2. General purpose output. During PC Mode, this pin becomes S3.
PC MODE INTERFACE SIGNALS. CONNECT SEL PIN TO GND TO SELECT PC MODE.
A3
25
20
I
Address-3 Select Bit. This pin is used as the 4th address line to decode the
COM1-4 and LPT ports. See
Table 1 for details. During Intel Bus Mode, this pin
becomes IOR.
A4
12
6
I
Address-4 Select Bit. This pin is used as the 5th address line to decode the
COM1-4 and LPT ports. This pin has an internal 100k
pull-up resistor. This pin is
not available on the 40-Pin PDIP package which operates in the Intel Bus Mode
Only. See
Table 1 for details. During Intel Bus Mode, this pin is inactive.
A5
A6
A7
A8
14
15
16
21
9
10
11
17
I
Address-5 thru Address-8 Select Bit. These pins are used as the 6th thru 9th
address lines to decode the COM1-4 and LPT ports. See
Table 1 for details. Dur-
ing Intel Bus Mode, A5 becomes CS0, A6 becomes CS1, A7 becomes CS2#, and
A8 becomes IOW.
A9
1
37
I
Address-9 Select Bit. This pin is used as the 10th address line to decode the
COM1-4 and LPT ports. This pin has an internal 100k
pull-up resistor. This pin is
not available on the 40-Pin PDIP package which operates in the Intel Bus Mode
Only. See
Table 1 for details. During Intel Bus Mode, this pin is inactive.
AEN#
28
24
I
Address Enable input (active low). When AEN# transitions to logic 0, it decodes
and validates COM 1-4 ports address per S1, S2 and S3 inputs. During Intel Bus
Mode, this pin becomes AS#.
S1
S2
S3
23
10
35
21
5
31
I
Select 1 to 3. These are the standard PC COM 1-4 ports and IRQ selection inputs.
See
resistor. This pin is not available on the 40 pin PDIP packages which operates in
the Intel Bus Mode Only. During Intel Bus Mode, S1 is inactive, S2 becomes
RCLK, and S3 becomes OP2#.
IRQA
IRQB
IRQC
33
32
27
30
29
23
O
Interrupt Request A, B and C Outputs (active high, three-state). These are the
interrupt outputs associated with COM 1-4 to be connected to the host data bus.
See interrupt section for details. The Interrupt Requests A, B or C functions as
IRQx to the PC bus. IRQx is enabled by setting MCR bit-3 to logic 1 and the
desired interrupt(s) in the interrupt enable register (IER). During Intel Bus Mode,
IRQA becomes INT, IRQB becomes RXRDY#, and IRQC becomes TXRDY#.
LPT1#
17
12
O
Line Printer Port-1 Decode Logic Output (active low). This pin functions as the PC
standard LPT-1 printer port address decode logic output, see
Table 1. The baud
rate generator clock output, BAUDOUT#, is internally connected to the RCLK input
in the PC mode. During Intel Bus Mode, LPT1# becomes BAUDOUT#.
NAME
44-PIN
PLCC
48-PIN
TQFP
TYPE
DESCRIPTION
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 接口集成电路 Supports C850 48 ld TQFP, ISA Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR16C850CM-F | 功能描述:UART 接口集成电路 UARTW/128BYTE FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR16C850CMTR-F | 功能描述:UART 接口集成电路 UART w/128 Bytes FIFO & IrDA RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
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