参数资料
型号: SC28C94A1A,512
厂商: NXP Semiconductors
文件页数: 24/39页
文件大小: 0K
描述: IC UART QUAD W/FIFO 52-PLCC
产品培训模块: Stand-Alone UARTs
标准包装: 23
特点: 故障启动位检测
通道数: 4,QUART
FIFO's: 8 字节
电源电压: 5V
带自动流量控制功能:
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: 52-LCC(J 形引线)
供应商设备封装: 52-PLCC(19.2x19.2)
包装: 管件
产品目录页面: 828 (CN2011-ZH PDF)
其它名称: 568-3993-5
935262534512
SC28C94A1A
SC28C94A1A-ND
Philips Semiconductors
Product data sheet
SC28C94
Quad universal asynchronous receiver/transmitter (QUART)
2006 Aug 09
30
RESET
tRES
SD00169
Figure 10. Reset Timing
RDN
CEN
I/O as Output
I/O as Input
tPS
tPH
tPD
WRN
OLD DATA
NEW DATA
I/O PINS MUST BE STABLE FOR NON-CHANGING BUS DATA DURING THE READ.
NOTE: I/O PIN DATA IS NOT LATCHED
SD00170
Figure 11. I/O Port Timing
WRN
INTERRUPT1
OUTPUT
RDN
INTERRUPT1
OUTPUT
VM
tIR
VOL +0.5V
VOL
NOTES:
1. INCLUDES I/O WHEN USED AS TxRDY or RxDY/FFULL OUTPUTS AS WELL AS IRQN.
2. THE TEST FOR OPEN DRAIN OUTPUTS IS INTENDED TO GUARANTEE SWITCHING OF THE OUTPUT TRANSISTOR. MEASUREMENT OF THIS RESPONSE IS
REFERENCED FROM THE MIDPOINT OF THE SWITCHING SIGNAL, VM, TO A POINT 0.5V ABOVE VOL. THIS POINT REPRESENTS NOISE MARGIN THAT AS-
SURES TRUE SWITCHING HAS OCCURRED. BEYOND THIS LEVEL, THE EFFECTS OF EXTERNAL CIRCUITRY AND TEST ENVIRONMENT ARE PRONOUNCED
AND CAN GREATLY AFFECT THE RESULTANT MEASUREMENT.
SD00171
Figure 12. Interrupt Timing
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