FDC37C932APM View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37C932APM

Plug and Play Compatible Ultra I/O™ Controller with Soft Power Management

SMSC -> Microchip 

POWER SUPPLY OPERATIONAL MODES

Standard Operational Modes

Table 109 - Standard Operational Modes For The Power Supplies.

MODE

VBAT

VTR

VCC

RTC Only (1)

3.3V

0

0

Standby (2) (3)

3.3V

5V @ 2mA Max

0

Full Power (2)

3.3V

5V @ 2mA Max

5V

Note 1: RTC power supplied by Vbat

Note 2: RTC power supplied by VTR

Note 3: In standby mode, the following are operational: RTC, RTC Alarm 2, power control (wakeup)

logic (button input and power on) and soft power management logic.

When VCC goes away, certain registers will be powered by VTR. Similarly, when VTR goes away,

certain registers will be powered by Vbat. These registers are discussed in the Soft Power

Management and RTC Section.

Power Supply Non-Standard Modes

Table 110 - Non-Standard Operational Modes For The Power Supplies.

NON-STANDARD MODE

VBAT

VTR

VCC

NS1

0

5V @ 2mA Max

0

NS2

0

5V @ 2mA Max

5V

NS3

0

0

5V

NS4

3.3V

0

5V

242

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