RCM2072R Ver la hoja de datos (PDF) - ROHM Semiconductor
Número de pieza
componentes Descripción
Fabricante
RCM2072R Datasheet PDF : 9 Pages
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Liquid crystal displays
FPin functions
RCM2072R
Note: In order to be able to interface with 4-bit or 8-bit MPUs, the module supports data transfer with two
transmissions of 4 bits at a time or one transmission of 8 bits at once.
(1) When the interface data length is 4 bits, data is transferred between the MPU along DB4 through DB7
buses and DB0 through DB3 buses are not used. Data transferral is completed after two transfers of 4 bit
data. First the upper nibble (contents of DB4 through DB7 during 8-bit interfacing) is transferred and then
the lower nibble (contents of DB0 through DB3 during 8-bit interfacing) is transferred. Check for busy
flag occurs after the second 4-bit data (one instruction) is transferred. At that time, the busy flag and
address counter data is also output in two 4-bit increments.
(2) When the interface data length is 8 bits, the data DB0 through DB7 is transferred along the eight data
buses.
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