FEDL9205-03
1
Semiconductor
ML9205-01
3. ADRAM data write
(Specifies the addresses 00H to 1FH of ADRAM and writes symbol data.)
ADRAM (Additional Data RAM) has a 5-bit address to store symbol data.
Symbol data specified by ADRAM is directly output without CGROM and CGRAM.
(The ADRAM can store 4 types of symbol patterns for each digit.)
The terminal to which the contents of ADRAM are output can be used as a cursor.
[Command format]
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
1st byte
(1st)
: selects ADRAM data write mode and specifies ADRAM
address
X0 X1 X2 X3 X4
1
1
0
(Ex: Specifies ADRAM address 00H.)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
2nd byte
(2nd)
: sets symbol data
(written into ADRAM address 00H.)
C0 C1 C2 C3
* * * *
To specify symbol data continuously to the next address, specify only symbol data as follows.
The address of ADRAM is automatically incremented. Specification of addresses is therefore unnecessary.
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
2nd byte
(3rd)
: sets symbol data
(written into ADRAM address 01H)
C0 C1 C2 C3
* * * *
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
2nd byte
(4th)
: sets symbol data
(written into ADRAM address 02H)
C0 C1 C2 C3
* * * *
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
2nd byte
(25th)
: sets symbol data
(written into ADRAM address 17H)
C0 C1 C2 C3
* * * *
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