SAA1501T Ver la hoja de datos (PDF) - Philips Electronics

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componentes Descripción

Fabricante

SAA1501T

Battery charge level indicator

Philips Electronics 

Philips Semiconductors

Battery charge level indicator

Objective specification

SAA1501T

Open battery protection

Open battery protection is active when VCC = 4.5 V (typ.).

The SAA1501T will then react as if the system is in the

standby mode. This means that the LEDs are turned off in

the LED mode, in the LCD mode the flickering is stopped

and the enable pin (EN) is switched to floating.

Testing

A user test facility is built-in for checking if the LCD and/or

LED displays are mounted correctly. Pin RCCC is used as

a test pin. Raising the voltage above 1 V during the set-up

time will activate the test. The test mode can only be

started in the standby mode. In the test mode all counters

are reset and will be active successively in the sequence

BLI, L20, L40, L60, L80, L100 and FULL with an interval

period determined by Tosc. The test mode can be exited via

the following methods:

Power-on; the Coulomb counter retains the latest data

displayed.

Automatically after the test cycle time; the Coulomb

counter is reset.

Fig.5 Legend for Fig.6.

December 1994

9

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