參數(shù)資料
型號(hào): ST16C450CQ48TR-F
廠商: Exar Corporation
文件頁(yè)數(shù): 27/28頁(yè)
文件大?。?/td> 0K
描述: IC UART SINGLE 48TQFP
標(biāo)準(zhǔn)包裝: 1,500
特點(diǎn): *
通道數(shù): 1,UART
FIFO's: 1 字節(jié)
電源電壓: 2.97 V ~ 5.5 V
帶故障啟動(dòng)位檢測(cè)功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP
供應(yīng)商設(shè)備封裝: 48-TQFP(7x7)
包裝: 帶卷 (TR)
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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