F1956 Datasheet

© 2015-2023 Renesas Electronics Corporation

21

April 21, 2023

APPLICATIONS INFORMATION

Power Supplies

A common VDD power supply should be used for all pins requiring DC power. All supply pins should be

bypassed with external capacitors to minimize noise and fast transients. Supply noise can degrade noise figure

and fast transients can trigger ESD clamps and cause them to fail. Supply voltage change or transients should

have a slew rate smaller than 1V/20µs. In addition, all control pins should remain at 0V (±0.3V) while the

supply voltage ramps or while it returns to zero.

Digital Pin Voltage and Resistance Values

The following table provides open-circuit DC voltage referenced to ground and resistance values for each of

the control pins listed.

Pin

Name

Open Circuit DC

Voltage

Internal Connection

3

VMODE

2.5V

100kΩ pull-up resistor to

internally regulated 2.5V

4, 21, 22

A0, A2, A1

0V

100kΩ resistor to GND

23, 24, 25 LE, CLK, DATA

2.5V

100kΩ pull-up resistor to

internally regulated 2.5V

26 – 32

D6 – D0

2.5V

100kΩ pull-up resistor to

internally regulated 2.5V