STE2001

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- Display blank (E = D = 0)

- Address counter X[6: 0] = 0 and Y[3 : 0] = 0

- Temperature coefficient (TC[1 : 0] = 0)

- Bias system (BS[2 : 0] = 0)

- Power Down (PD = 1)

To clear the RAM content a MEMORY BLANK instruction should be executed.

Power Down (PD = 1)

off state. An external clock can be provided. The RAM contents is not cleared.

Charge Pump Factor

The desired Charge Pump Multiplication Factor can be programmed though the S1 and S0 bits, as follows:

At Reset the X2 factor is selected.

Bias Levels

To properly drive the LCD, six (Including VLCD and VSS) different voltage (Bias) levels are generated. The ra-

tios among these levels and VLCD, should be selected according to the MUX ratio (m). They are established to

be (Fig. 14):

Figure 13. Bias level Generator

S1

S0

Multi plication Factor

00

2X

01

3X

10

4X

11

5X

V

LCD

n3

+

n4

+

------------- V

n2

+

n4

+

------------- V

2

n4

+

------------- V

1

n4

+

------------- V

,

R

n+ 3

n+ 4

R

nR

R

R

n+ 2

n+ 4

2

n+ 4

1

n+ 4

D00IN1150