ST16C2550IJ44 Просмотр технического описания (PDF) - Exar Corporation

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Компоненты Описание

производитель

ST16C2550IJ44

2.97V TO 5.5V DUART WITH 16-BYTE FIFO

Exar Corporation 

xr

REV. 4.4.0

ST16C2550

2.97V TO 5.5V DUART WITH 16-BYTE FIFO

FIGURE 5. EXTERNAL CLOCK CONNECTION FOR EXTENDED DATA RATE

External Clock

vcc

gnd

VCC

R1

2K

XTAL1

XTAL2

To obtain maximum data rate, it is necessary to use full rail swing on the clock input. See external clock

operating frequency over power supply voltage chart in Figure 6.

FIGURE 6. OPERATING FREQUENCY VERSUS POWER SUPPLY CHART.

Requires a 2K ohms pull-up resistor on XTAL2 pin to increase operating speed

Operating frequency for ST16C2550

with external clock and a 2K ohm s

pull-up resistor on XTAL2 pin.

80

-40oC

70

25oC

85oC

60

50

40

30

3.0 3.5 4.0 4.5 5.0 5.5

Suppy Voltage

11

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