RA6963
Preliminary Version 1.3
Dot Matrix LCD Controller
6-13 Screen Peek
< Table 6-20 >
Function
Code
Hex.
Operand
11100000
E0h Screen Peek
－
This command is used to transfer 1 byte of displayed data to the data stack; this byte can be read from
the MPU by data access. The logical combination of text and graphic display data on the LCD screen
can be read by this command.
The status (STA6) should be checked just after the Screen Peek command. If the address Determined
by the Set Address Pointer command is not in the graphic area, this command is ignored and a status
flag (STA6) is set.
Refer to the following flowchart.
Screen Peek Start
Set Address Pointer
Status Check 1
STA0, 1
Screen Peek E0h
NO
(*) Status Check STA6=0?
(*)
YES
Status Check 1
Data Access
END
< Figure 6-10 >
Note: This command is available when hardware column number and software column number are the
same. Hardware column number is related to MD2 and MD3 setting. Software column number is
related to Set Text Area and Set Graphic Area command.
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