参数资料
型号: SC16C554IB80,551
厂商: NXP Semiconductors
文件页数: 6/55页
文件大小: 0K
描述: IC UART QUAD W/FIFO 80-LQFP
标准包装: 119
通道数: 4,QUART
FIFO's: 16 字节
电源电压: 2.5V,3.3V,5V
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: 80-LQFP
供应商设备封装: 80-LQFP(12x12)
包装: 托盘
其它名称: 568-3271
935270075551
SC16C554IB80-S
Philips Semiconductors
SC16C554/554D
Quad UART with 16-byte FIFO and infrared (IrDA) encoder/decoder
Product data
Rev. 05 — 10 May 2004
14 of 55
9397 750 13132
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
6.1 Interface options
Two user interface modes are selectable for the PLCC68 package. These interface
modes are designated as the ‘16 mode’ and the ‘68 mode’. This nomenclature
corresponds to the early 16C454/554 and 68C454/554 package interfaces
respectively.
6.2 The 16 mode interface
The 16 mode congures the package interface pins for connection as a standard
16 series (Intel) device and operates similar to the standard CPU interface available
on the 16C454/554. In the 16 mode (pin 16/68 = logic 1), each UART is selected with
individual chip select (CSx) pins, as shown in Table 3.
6.3 The 68 mode interface
The 68 mode congures the package interface pins for connection with Motorola, and
other popular microprocessor bus types. The interface operates similar to the
68C454/554. In this mode, the SC16C554/554D decodes two additional addresses,
A3-A4, to select one of the four UART ports. The A3-A4 address decode function is
used only when in the 68 mode (16/68 = logic 0), and is shown in Table 4.
Table 3:
Serial port channel selection, 16 mode interface
CSA
CSB
CSC
CSD
UART channel
1111
none
0111A
1011B
1101C
1110D
Table 4:
Serial port channel selection, 68 mode interface
CS
A4
A3
UART channel
1
n/a
none
000A
001B
010C
011D
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