SSD0858Z Ver la hoja de datos (PDF) - Solomon Systech

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SSD0858Z

LCD Segment / Common Driver with Controller

Solomon Systech  

6

PIN DESCRIPTION

6.1 RES

This pin is reset signal input. When the pin is low, initialization of the chip is executed.

6.2 SDA, SCL & SA0

These pins are bi-directional data bus to be connected to the MCU in I2C-bus interface. Please refer to

the section: I2C Communication interface on page 22 for detail pin descriptions.

6.3 VDD

Power supply pin.

6.4 RVSS

Ground reference of Vref.

6.5 CVSS

Ground reference of analog circuitry.

6.6 VSS

Ground reference of logic circuitry.

6.7 VCI

Reference voltage input for internal DC-DC converter. The voltage of generated VCC equals to the

multiple factor (2X, 3X, 4X or 5X) times VCI with respect to VSS.

Note: Voltage at this input pin must be larger than or equal to VDD.

6.8 VOUT

This is the most positive voltage supply pin of the chip. It can be supplied externally or generated by the

internal regulator.

6.9 VL5, VL4, VL3 and VL2

LCD driving voltages. They can be supplied externally or generated by the internal bias divider. They

have the following relationship:

VOUT > VL5 > VL4 > VL3 > VL2 > VSS

Table 3 - VOUT > VL5 > VL4 > VL3 > VL2 > VSS Relationship

1 : a bias

VL5

(a-1)/a * VOUT

VL4

(a-2)/a * VOUT

VL3

2/a * VOUT

VL2

1/a * VOUT

a is equals to 9 at POR.

9

SSD0858

Rev 1.0

11/2002

SOLOMON

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