S1K50000 Epson Electronics America, Inc., S1K50000 Datasheet - Page 126

• Manufacturer Part Number: S1K50000
• Description: Design Guide S1k50000 Series
• Manufacturer: Epson Electronics America, Inc.

9.6 Estimating the Number of Power-Supply Pins in a Dual-
STANDARD CELL S1K50000 SERIES
DESIGN GUIDE
Even during operation of a dual-power-supply system, the amount of current that can flow
through each pair of power-supply pins (for both HV
the case of a single-power-supply system. Find the necessary number of power-supply-pin
pairs separately for the HV
When calculating the number of power-supply pins here, make sure the HV
systems each have at least two power-supply-pin pairs.
Note: If the output buffers have a DC load connected and have a steadily flowing current, one or more power-supply
Power-Supply System
* Letting the current consumption in the HV
* Letting the current consumption in the LV
power-supply-pin pairs NI
follows:
power-supply-pin pairs NI
follows:
pins must be added. For more information, contact Seiko Epson or its distributor.
When adding power-supply pins due to simultaneously changing outputs, do so separately for the HV
LV
For the number of power-supply pins to add, see Tables 8-1-1 through 8-2-2 for the 3.3-V or 2.0-V system, and
Tables 9-12 and 9-13 for the 5.0-V system.
NI
NI
DD
DD
DD
-system output buffers by adding power-supply pins for each power-supply system.
(HV
(LV
DD
DD
)
)
I
I
DD
DD
(LV
(HV
DD
DD
DD
and LV
DD
DD
) / 50 (pair)
) / 50 (pair)
(HV
(LV
DD
DD
DD
) needed for the current consumption I
) needed for the current consumption I
systems.
EPSON
Chapter 9: Precautions on the Use of Dual Power Supplies
:
:
DD
DD
50 mA per pair can be supplied
50 mA per pair can be supplied
system be I
system be I
DD
and LV
DD
DD
DD
(LV
(HV
systems) is the same as in
DD
DD
) [mA], the number of
) [mA], the number of
DD
DD
DD
and LV
(LV
(HV
DD
DD
DD
DD
) is as
) is as
- and
121