MAXQ2000-RBX datasheet(3/39 Pages) MAXIM

Part #	MAXQ2000-RBX

Description	Low-Power LCD Microcontroller

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Manufacturer	MAXIM [Maxim Integrated Products]

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Low-Power LCD Microcontroller

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3

ELECTRICAL CHARACTERISTICS (continued)

(VDD = VDD(MIN) to VDD(MAX), VDDIO = 2.7V to 3.6V, TA = -40°C to +85°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input High Voltage:

P6.4–P6.5 and P7.0–P7.1

VIH2

SVS on, VLCD = 3.3V

0.75 x

VDDIO

VLCD

V

Input High Voltage:

All Other Pins

VIH3

0.75 x

VDDIO

V

Input Low Voltage:

HFIN and 32KIN

VIL1

0

0.2 x

VDDIO

V

Input Low Voltage:

All Other Pins

VIL2

0

0.25 x

VDDIO

V

Output High Voltage:

P6.4–P6.5 and P7.0–P7.1

VOH1

SVS on; IOH(MAX) = 0.75mA; VLCD = 2.7V

VLCD -

0.2

V

Output High Voltage:

All Other Pins

VOH2

IOH(MAX) = 0.75mA; VDDIO =1.8V

VDDIO -

0.2

V

Output Low Voltage for

All Other Pins

VOL1

IOL = 1.0mA; VDDIO = 1.8V

GND

0.2

V

Output Low Voltage for

P6.4–P6.5 and P7.0–P7.1

VOL2

IOL = 1.4mA; VDDIO = 2.7V

GND

0.2

V

Input Leakage Current

IL

Internal pullup disabled

-100

+100

nA

Input Pullup Current

IIP

Internal pullup enabled

-20

-5

µA

LCD INTERFACE

LCD Reference Voltage

VLCD

2.7

3.3

3.6

V

LCD Bias Voltage 1

VLCD1

1/3 bias

VADJ + 2/3 (VLCD - VADJ)V

LCD Bias Voltage 2

VLCD2

1/3 bias

VADJ + 1/3 (VLCD - VADJ)V

LCD Adjustment Voltage

VADJ

Guaranteed by design

0

0.4 x

V

LCD Bias Resistor

RLCD

100

kΩ

LCD Adjustment Resistor

RLADJ

LRA4:LRA0 = 0

200

kΩ

When segment is driven at VLCD level;

VLCD = 3V; ISEGxx = -3µA;

guaranteed by design

VLCD -

0.02

VLCD

When segment is driven at VLCD1 level;

VLCD1 = 2V; ISEGxx = -3µA;

guaranteed by design

VLCD1 -

0.02

VLCD1

When segment is driven at VLCD2 level;

VLCD2 = 1V; ISEGxx = -3µA;

guaranteed by design

VLCD2 -

0.02

VLCD2

LCD Segment Voltage

VSEGxx

When segment is driven at VADJ level;

VADJ = 0V; ISEGxx = -3µA;

guaranteed by design

-0.1

VADJ

V

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