UPD16498 Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

componentes Descripción

Fabricante

UPD16498

1/128 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM

NEC => Renesas Technology 

µPD16498

(1) i80 series parallel interface

When i80 series parallel data transfer has been selected, data is written to the µPD16498 at the rising edge of the /WR

signal. The data is output to the data bus when the /RD signal is L.

/CS1

(CS2=H)

Figure 5-1. i80 Series Interface Data Bus Status

/WR

/RD

Hi-Z

DBn

Hi-Z

Valid data

Data write

Data Read

(2) M68 series parallel interface

When M68 series parallel data transfer has been selected, data is written at the falling edge of the E signal when the R,/W

signal is L. During the data read operation, the data bus enters the output status when the R,/W signal is H, outputs valid

data at the rising edge of the E signal, and enters the high-impedance state at the falling edge of the R,/W signal (R,/W = L)

Figure 5-2. M68 Series Interface Data Bus Status

/CS1

(CS2=H)

R,/W

E

Hi-Z

Hi-Z

DBn

Invalid data

Valid data

Data Sheet S15730EJ2V0DS

17

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