ML9205-01GP View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
ML9205-01GP
Oki Electric Industry
'ML9205-01GP' PDF : 34 Pages View PDF
¡ Semiconductor
FEDL9205-02
ML9205-01
2. CGRAM data write
(Specifies the addresses of CGRAM and writes character pattern data.)
CGRAM (Character Generator RAM) has a 4-bit address to store 5 ¥ 7 dot matrix character
patterns.
A character pattern stored in CGRAM can be displayed by specifying the character code
(address) by DCRAM.
The address of CGRAM is assigned to 00H to 0FH. (All the other addresses are the CGROM
addresses.)
(The CGRAM can store 16 types of character patterns.)
[Command format]
1st byte
(1st)
2nd byte
(2nd)
3rd byte
(3rd)
4th byte
(4th)
5th byte
(5th)
6th byte
(6th)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
X0 X1 X2 X3 * 0 1 0 : selects CGRAM data write mode and specifies
CGRAM address.
LSB
MSB (Ex: Specifies CGRAM address 00H.)
B0 B1 B2 B3 B4 B5 B6 B7
C0 C5 C10 C15 C20 C25 C30 * : specifies 1st column data
(written into CGRAM address 00H)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
C1 C6 C11 C16 C21 C26 C31 * : specifies 2nd column data
(written into CGRAM address 00H)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
C2 C7 C12 C17 C22 C27 C32 * : specifies 3rd column data
(written into CGRAM address 00H)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
C3 C8 C13 C18 C23 C28 C33 * : specifies 4th column data
(written into CGRAM address 00H)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
C4 C9 C14 C19 C24 C29 C34 * : specifies 5th column data
(written into CGRAM address 00H)
To specify character pattern data continuously to the next address, specify only character pattern
data as follows.
The addresses of CGRAM are automatically incremented. Specification of an address is
therefore unnecessary.
The 2nd to 6th byte (character pattern data) are regarded as one data item, so 300 ns is sufficient
for tDOFF time between bytes.
18/34
Share Link: 