参数资料
型号: XR16L580IMTR-F
厂商: Exar Corporation
文件页数: 48/49页
文件大小: 0K
描述: IC UART FIFO 16B 48TQFP
标准包装: 1,500
特点: *
通道数: 1,UART
FIFO's: 16 字节
规程: RS232,RS422
电源电压: 2.25 V ~ 5.5 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 48-TQFP
供应商设备封装: 48-TQFP(7x7)
包装: 带卷 (TR)
XR16L580
8
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
REV. 1.4.2
2.0 FUNCTIONAL DESCRIPTIONS
2.1
CPU Interface
The CPU interface is 8 data bits wide with 3 address lines and control signals to execute data bus read and
write transactions. The L580 data interface supports the Intel compatible types of CPUs and it is compatible to
the industry standard 16C550 UART. No clock (oscillator nor external clock) is required to operate a data bus
transaction. Each bus cycle is asynchronous using CS#, IOR# and IOW# or R/W# inputs. A typical data bus
interconnection for Intel and Motorola mode is shown in Figure 3.
FIGURE 3. XR16L580 TYPICAL INTEL/MOTOROLA DATA BUS INTERCONNECTIONS
VCC
A0
A1
A2
UART_CS#
IOR#
IOW#
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
CS#
D0
D1
D2
D3
D4
D5
D6
D7
IOR#
IOW#
UART_INT
INT
Serial Interface of
RS-232 or RS-422
Intel Data Bus Interconnections
GND
UART_RESET
RESET
16/68#
RI#
CD#
DSR#
CTS#
RTS#
DTR#
RX
TX
PwrSave
VCC
A0
A1
A2
UART_CS#
R/W#
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
CS#
D0
D1
D2
D3
D4
D5
D6
D7
IOR#
IOW#
UART_IRQ#
INT
Serial Interface of
RS-232 or RS-422
Motorola Data Bus Interconnections
GND
UART_RESET#
RESET
RI#
CD#
DSR#
CTS#
RTS#
DTR#
RX
TX
PwrSave
VCC
16/68#
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