参数资料
型号: ST16C450IJ44-F
厂商: Exar Corporation
文件页数: 27/28页
文件大小: 0K
描述: IC UART SINGLE 44PLCC
标准包装: 27
特点: *
通道数: 1,UART
FIFO's: 1 字节
电源电压: 2.97 V ~ 5.5 V
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: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 管件
ST16C450
8
Rev. 4.20
FUNCTIONAL DESCRIPTIONS
Internal Registers
The ST16C450 provides 11 internal registers for
monitoring and control. These registers are shown in
Table 2 below. These registers function as data holding
registers (THR/RHR), interrupt
status and control
registers (IER/ISR), line status and control registers,
(LCR/LSR), modem status and control registers (MCR/
MSR), programmable data rate (clock) control registers
(DLL/DLM), and a user assessable scratchpad register
(SPR).
Table 2, INTERNAL REGISTER DECODE
A2
A1
A0
READ MODE
WRITE MODE
General Register Set (THR/RHR, IER/ISR, MCR/MSR, LCR/LSR, SPR):
0
Receive Holding Register
Transmit Holding Register
0
1
Interrupt Enable Register
0
1
0
Interrupt Status Register
0
1
Line Control Register
1
0
Modem Control Register
1
0
1
Line Status Register
1
0
Modem Status Register
1
Scratchpad Register
Baud Rate Register Set (DLL/DLM): Note *3
0
LSB of Divisor Latch
0
1
MSB of Divisor Latch
Note *3: These registers are accessible only when LCR bit-7 is set to a logic 1.
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