ML9042 datasheet(6/58 Pages) OKI

6 / 58 page

FEDL9042-01

OKI Semiconductor

ML9042-xx

6/58

ABSOLUTE MAXIMUM RATINGS

(GND = 0 V)

Parameter

Symbol

Condition

Rating

Unit

Applicable pins

Supply Voltage

VDD

Ta = 25

°C

–0.3 to +6.5

VDD

LCD Driving Voltage

V0, V1, V2,

V3, V4,

Ta = 25

°C

–0.3 to +6.5

VOUT, V0, V1, V2, V3A, V3B, V4,

GND

Input Voltage

Ta = 25

°C

–0.3 to VDD+0.3

RW/SI, E/SHTB, SP,

RS0/CSB, RS1, BE,

ROM1S, T1 to T3, DB0(SO)

to DB7, VIN

Storage Temperature

TSTG

—

–55 to +150

°C

—

RECOMMENDED OPERATING CONDITIONS

(GND = 0 V)

Parameter

Symbol

Condition

Range

Unit

Applicable pins

Supply Voltage

VDD

—

2.7 to 5.5

VDD

LCD Driving Voltage

(See Note)

—

2.7 to 5.5

VOUT, V0

Voltage Multipler

Input Voltage

VMUL

BE = “1”

1.8 to 2.75

VIN

Operating Temperature

Top

—

–40 to +85

°C

—

Note:

This voltage should be applied across V0 and GND. The following voltages are output to the V1,

V2, V3A (V3B) and V4 pins:

• 1/4 bias (V

2 and V3B are short-circuited)

V1 =3 V0/4 ±0.15 V

V2 = V3B = V0/2 ±0.15 V

V4 = V0/4 ±0.15 V

• 1/5 bias (V

3A and V3B are short-circuited)

V1 = 4 V0/5 ±0.15 V

V2 = 3 V0/5 ±0.15 V

V3A = V3B = 2 V0/5 ±0.15 V

V4 = V0/5 ±0.15 V

The voltages at the V0, V1, V2, V3A (V3B), V4 and GND pins should satisfy

V0 > V1 > V2 > V3A (V3B) > V4 > GND

(Higher

←

→ Lower)

* If the chip is attached on a substrate using COG technology, the chip tends to be susceptible

to electrical characteristics of the chip due to trace resistance on the glass substrate. It is

recommended to use the chip by confirming that it operates on the glass substrate properly.

Trace resistance, especially, VDD and VSS trace resistance, between the chip on the LCD

panel and the flexible cable should be designed as low as possible. Trace resistance that

cannot be very well decreased, larger size of the LCD panel, or greater trace capacitance

between the microcontroller and the ML9042 device can cause device malfunction. In order

to avoid the device malfunction, power noise should be reduced by serial interfacing of the

microcontroller and the ML9042 device.

* Do not apply short-circuiting across output pins and across an output pin and an input/output

pin or the power supply pin in the output mode.

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