PCA5010 datasheet(70/112 Pages) PHILIPS

номер детали	PCA5010

подробное описание детали	Pager baseband controller

PDF	112 Pages

Scroll/Zoom	100%

производитель	PHILIPS [NXP Semiconductors]

домашняя страница	http://www.nxp.com

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70 / 112 page

1998 Nov 02

Philips Semiconductors

Product speciﬁcation

Pager baseband controller

PCA5010

Fig.45 VDD as a function of load current.

VBAT = 1.2 V; L = 470 µH; SRL = 5 Ω; Co = 4.7 µF; ESR = 0.5 Ω.

handbook, full pagewidth

MGR141

2.25

2.20

2.15

2.10

VDD (IL) mean

IL (mA)

VDD

(V)

ripple

6.22.7

VDD ADJUSTMENT

VDD can be shifted in four steps by adjusting the band gap

voltage. The band gap voltage is set with the two bits

VBG1 and VBG0 in DCCON1 according to Table 55.

Table 55 VDD adjustment

VBG1

VBG0

OUTPUT VOLTAGE

VDD

VDD − 50 mV

VDD +50mV

VDD + 100 mV

6.22.8

BATTERY LOW MEASUREMENT

Battery low measurement is enabled by setting the SBLI

bit in DCCON0. 0.5 ms after setting SBLI to logic 1 the BLI

bit in DCCON0 contains the measurement result. When

BLI = 0 the battery voltage is below 1.1 V. When BLI = 1

VBAT is above 1.1 V. When SBLI = 1 VBAT is measured

continuously. Setting SBLI to logic 0 disables the VBAT

comparator and BLI is set to logic 1. After a reset pulse at

RESETIN, SBLI is reset to logic 0.

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