HD44780UA00FS Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

Número de pieza

componentes Descripción

Fabricante

HD44780UA00FS

Dot Matrix Liquid Crystal Display Controller/Driver

Hitachi -> Renesas Electronics 

HD44780U

CL1

CL2

VOH2

VOH2

tCWH

tCSU

tct

VOL2

tCWH

VOL2

tCSU

VOH2

tCWL

tct

D

VOH2

VOL2

tDH

tSU

M

VOH2

t DM

Figure 27 Interface Timing with External Driver

VCC

2.7 V/4.5 V*2

0.2 V

0.2 V

0.2 V

trcc

0.1 ms ≤ trcc ≤ 10 ms

tOFF*1

tOFF ≥ 1 ms

Notes: 1. tOFF compensates for the power oscillation period caused by momentary power supply

oscillations.

2. Specified at 4.5 V for 5-V operation, and at 2.7 V for 3-V operation.

3. For if 4.5 V is not reached during 5-V operation, the internal reset circuit will not operate

normally.

In this case, the LSI must be initialized by software. (Refer to the Initializing by

Instruction section.)

Figure 28 Internal Power Supply Reset

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