Orient Display AMC0802CR-B-Y6WFDY

This LCD module incorporates an LSI controller containing two 8-bit registers: an Instruction Register (IR) and a Data Register (DR). The IR stores instruction codes (such as display clear and cursor shift) as well as address information for the Display Data RAM (DDRAM) and Character Generator RAM (CGRAM). The IR can only be written by the MPU. The DR temporarily stores data to be written to or read from the DDRAM or CGRAM. When address information is written to the IR, data is transferred from the DDRAM or CGRAM into the DR. These two registers are selected via the Register Select (RS) signal. When the busy flag is 1, the controller LSI is in internal operation mode and will not accept the next instruction. When RS=0 and R/W=1, the busy flag is output on pin DB7. The next instruction must not be written until the busy flag is confirmed to be 0. The Address Counter (AC) assigns addresses to both the DDRAM and CGRAM. The DDRAM stores display data represented as 8-bit character codes, with an extended capacity of 80×8 bits (i.e., 80 characters). The CGROM generates 5×8-dot or 5×10-dot character patterns from 8-bit character codes. In the CGRAM, users can reprogram character patterns. Up to eight character patterns can be written for the 5×8-dot format, and four character patterns for the 5×10-dot format. Character patterns stored in the CGRAM are displayed by writing the character codes corresponding to the addresses shown in the left column of Table 1 into the DDRAM.