SSD1812 datasheet(8/28 Pages) ETC

8 / 28 page

SSD1812

REV 1.2

12/99

SOLOMON

MAXIMUM RATINGS* (Voltages Referenced to VSS, TA=25°C)

Symbol

Parameter

Value

Unit

VDD

Supply Voltage

-0.3 to +4.0

VEE

-4.0 to -12.0

Vin

Input Voltage

VSS-0.3 to VDD+0.3

Current Drain Per Pin Excluding VDD and

VSS

Operating Temperature

-30 to +85

°C

Tstg

Storage Temperature Range

-65 to +150

°C

* Maximum Ratings are those values beyond which damage to the device may occur. Functional

operation should be restricted to the limits in the Electrical Characteristics tables or Pin Descrip-

tion section.

This device contains circuitry to protect the inputs

against damage due to high static voltages or elec-

tric fields; however, it is advised that normal precau-

tions to be taken to avoid application of any voltage

higher than maximum rated voltages to this high

impedance circuit. For proper operation it is recom-

mended that Vin and Vout be constrained to the

range VSS < or = (Vin or Vout) < or = VDD. Reliability

of operation is enhanced if unused input are con-

nected to an appropriate logic voltage level (e.g.,

either VSS or VDD). Unused outputs must be left

open. This device may be light sensitive. Caution

should be taken to avoid exposure of this device to

any light source during normal operation. This

device is not radiation protected.

ELECTRICAL CHARACTERISTICS (Voltage Referenced to VSS, VDD=1.8 to 3.5V, TA=25°C; unless otherwise specified.)

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

VDD

Logic Circuit Supply Voltage Range

Voltage Generator Circuit Supply Voltage Range

Recommend Operating Voltage

Possible Operating Voltage

2.4

1.8

2.7

3.5

IAC

IDP1

IDP2

ISB

ISLEEP

Access Mode Supply Current Drain (VDD Pins)

Display Mode Supply Current Drain (VDD Pins)

Standby Mode Supply Current Drain (VDD Pins)

Sleep Mode Supply Current Drain (VDD Pins)

VDD = 2.7V, Voltage Generator On, 4X Converter

Enabled, Write accessing, Tcyc =3.3MHz, Osc.

Freq.=31kHz, Display On.

VDD = 2.7V, VEE = -8.1V, Voltage Generator Dis-

abled, R/W(WR) Halt, Osc. Freq. = 31kHz, Display

On, VL6 - VDD = -8.1V.

VDD = 2.7V, VEE = -8.1V, Voltage Generator On, 4x

DC-DC Converter Enabled, R/W(WR) Halt, Osc.

Freq. = 31kHz, Display On, VL6 - VDD = -8.1V.

VDD=2.7V, LCD Driving Waveform Off, Osc. Freq. =

31kHz, R/W(WR) halt.

VDD = 2.7V, LCD Driving Waveform Off, Oscillator

Off, R/W(WR) halt.

300

120

150

3.5

0.2

TBD

µA

VEE

VLCD

LCD Driving Voltage Generator Output

(VEE Pin)

LCD Driving Voltage Input (VEE Pin)

Display On, Voltage Generator Enabled,

DC/DC Converter Enabled, Osc. Freq.=31KHz,

Regulator Enabled, Divider Enabled.

Voltage Generator Disabled.

-12.0

-1.8

VOH1

VOL1

VL6

Output High Voltage

(D0-D7)

Output Low Voltage

(D0-D7)

LCD Driving Voltage Source (VL6 Pin)

Iout=100µA

Regulator Enabled (VL6 voltage depends on Int/Ext

Contrast Control)

Regulator Disable

0.9*VDD

VEE-0.5

Floating

VDD

0.1*VDD

VDD

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