STE2001 datasheet(4/36 Pages) STMICROELECTRONICS

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STE2001

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Notes: 1. The maximum possible VLCD voltage that can be generated is dependent on voltage, temperature and (display) load.

2. Internal clock

3. When fsclk = 0 there is no interface clock.

4. Power-down mode. During power-down all static currents are switched-off.

5. If external VLCD, the display load current is not transmitted to IDD

6. Tolerance depends on the temperature; (typically zero at Tamb =27°C), maximum tolerance values are measured at the temper-

ature range limit.

7. For TC0 to TC3

AC OPERATION

(VDD1 = 1.9 to VDD2,3 + 0.5V; VDD2,3 = 2.4 to 4.5 V; Vss1,2= 0V; VLCD = 4.5 to 9V; Tamb =-40 to 85°C; unless otherwise

specified)

I(VDD1,2,3)

Total Supply Current

VLCD = 7.6V; VDD =2.8V;

4x charge pump; fsclk =0; Tamb

=25

°C; no display load; note 3,6

Fosc =0

125

µA

I(VLDCIN) External LCD Supply Voltage

Current

VDD =2.8V; VLCD =7.6V;no

display load; fsclk =0;

Tamb =25°C; note 3. Fosc =0

µA

Logic Inputs

VIL

Logic LOW voltage level

VIN =Vih (tp <10µs)

VSS

0.3

VDD

VIH

Logic HIGH Voltage Level

VIN =Vil (tp <10µs)

0.7

VDD

VDD2,3

+0.5

Iin

Input Current

Vin =VSS1 or VDD1

-1

µA

Column and Row Driver

Rrow

ROW Output Resistance

kohm

Rcol

Column Output resistance

kohm

Vcol

Column Bias voltage accuracy

No load

-100

100

Vrow

Row Bias voltage accuracy

-100

100

LCD Supply Voltage

VLCD

LCD Supply Voltage accuracy;

Internally generated

VDD = 2.8V; VLCD = 7.6V;

fsclk=0; Tamb=25 C;

no display load; note 2, 3, 6 & 7

-300

300

Temperature coefficient

-550

PPM/

°C

-1350

PPM/

°C

-1650

PPM/

°C

-2650

PPM/

°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INTERNAL OSCILLATOR

FOSC

Internal Oscillator frequency

VDD = 2.8V;

kHz

FEXT

External Oscillator frequency

100

kHz

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

ELECTRICAL CHARACTERISTICS (continued)

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