Specifications

Wireless CPU

Q24 Series

Interfaces

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WM_PGM_Q24NG_PTS_001-005

November 20, 2007

3. 9

This ome external functions. This power supply is

1 VCC Output

output may be used to power s

ailable when the Wireless CPU

is ON.

Pin description

Signal Pin number I/O I/O type Description

VCC 40 O Supply Digital supply

Operating conditions

Parameter Condition Min Max Unit

I = 0 2.86 V Output voltage

I = 100 mA 2.74 V

Output Current 100 mA

3.20

The VCC_ a back-up power supply for the internal Real

Tim

The RTC is supported by the Wireless CPU

power

save date and time information, when VDD is removed or the

Wireless CPU

If the RTC is not used, this pin may be left open.

If VDD<2.6V, the RTC regulator is disabled, a back-up battery is then necessary to

save date and time information.

Real Time Clock Supply (VCC_RTC)

RTC input is used to provide

e Clock (RTC).

when power-ON, but a back-up

supply is necessary to

is switched off.

Equivalent circuit

Q24 Series

RTC

block

RTC regulato

BAT-RTC

VDD>2.6V