MSM6546 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

MSM6546

Operatable at 0.9 V and Built-in LCD Driver 4-Bit Microcontroller

Oki Electric Industry 

¡ Semiconductor

MSM6546/6546L

(Figure 1) 1.5 V Operation (Backup Flag = "1")

VDD = 0 V

VB = –1.5 V

(–3.0 V)

VDD

Voltage converter

VSS1

Voltage

VSS2

doubler

VEE

Internal logic

VR

Internal

status

The battery level VSS1 is applied to the input of the

constant voltage circuit.

Operating

range

–0.9 to –1.75 V

Current

consumption 1.5 mA*

Feature

When the battery level is powered down, the internal

circuit is powered directly by the battery.

* When the software duty is about 5%

(Figure 2) 1.5 V Operation (Backup Flag = "0")

VDD = 0 V

VB = –1.5 V

(–3.0 V)

VDD

Voltage converter

VSS1

Voltage

VSS2

doubler

VEE

Internal logic

VR

Internal

status

A doubled level of VSS2 is applied to the input of the

constant voltage circuit.

Operating

range

–0.9 to –1.75 V

Current

consumption 3 mA*

Feature

When the battery level is powered down, a larger

operating voltage margin is gained, compared to the

case of Figure 1.

* When the software duty is about 5%

(Figure 3) 3.0 V Operation (Backup Flag = "1")

VDD = 0 V

(–1.5 V)

VB = –3.0 V

VDD

Voltage converter

VSS1

Voltage

VSS2

doubler

VEE

Internal logic

VR

Internal

status

The battery level VSS2 is applied to the input of the

constant voltage circuit.

Operating

range

–0.9 to –3.5 V

Current

consumption 1.5 mA*

Feature

When the battery level is powered down, the internal

circuit is powered directly by the battery.

* When the software duty is about 5%

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