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參數(shù)資料
| 型號： | ST16C2552CJ44 |
| 廠商： | EXAR CORP |
| 元件分類： | Serial IO/Communication Controller |
| 英文描述： | 2 CHANNEL(S), 4M bps, SERIAL COMM CONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 19/38頁 |
| 文件大?。?/td> | 447K |
| 代理商： | ST16C2552CJ44 |
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ST16C2552
24
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
REV. 4.2.1
MSR[7]: CD Input Status
Normally this bit is the compliment of the CD# input. In the loopback mode this bit is equivalent to bit-3 in the
MCR register. The CD# input may be used as a general purpose input when the modem interface is not used.
4.11
Scratch Pad Register (SPR) - Read/Write
This is a 8-bit general purpose register for the user to store temporary data. The content of this register is
preserved during sleep mode but becomes 0xFF (default) after a reset or a power off-on cycle.
4.12
Baud Rate Generator Registers (DLL and DLM) - Read/Write
The concatenation of the contents of DLM and DLL gives the 16-bit divisor value which is used to calculate the
baud rate:
Baud Rate = (Clock Frequency / 16) / Divisor
See MCR bit-7 and the baud rate table also.
4.13
Alternate Function Register (AFR) - Read/Write
This register is used to select specific modes of MF# operation and to allow both UART register sets to be
written concurrently.
AFR[0]: Concurrent Write Mode
When this bit is set, the CPU can write concurrently to the same register in both UARTs. This function is
intended to reduce the dual UART initialization time. It can be used by the CPU when both channels are
initialized to the same state. The external CPU can set or clear this bit by accessing either register set. When
this bit is set, the channel select pin still selects the channel to be accessed during read operations. The user
should ensure that LCR Bit-7 of both channels are in the same state before executing a concurrent write to the
registers at address 0, 1, or 2.
Logic 0 = No concurrent write (default).
Logic 1 = Register set A and B are written concurrently with a single external CPU I/O write operation.
AFR[2:1]: MF# Output Select
These bits select a signal function for output on the MF# A/B pins. These signal function are described as:
OP2#, BAUDOUT#, or RXRDY#. Only one signal function can be selected at a time.
AFR[7:3]: Reserved
All are initialized to logic 0.
BIT-2
BIT-1
MF# FUNCTION
0
OP2# (default)
0
1
BAUDOUT#
1
0
RXRDY#
1
Reserved
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C2552CJ44-F | 功能描述:UART 接口集成電路 2.97V-5.5V 16B FIFO temp 0C to 70C; UART 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 |
| ST16C2552CJ44TR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C2552CJ44TR-F | 功能描述:UART 接口集成電路 DUAL UART W/16BYTE 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 |
| ST16C2552CQ48 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| ST16C2552IJ | 制造商:Exar Corporation 功能描述:2 CHANNEL(S), 4M bps, SERIAL COMM CONTROLLER, PQCC44 |
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