ML9208 Datasheet, PDF (15/33 Pages) OKI electronic componets – 5 X 7 Dot Character X 16-Digit Display Controller/Driver with Character RAM

OKI Semiconductor
FEDL9208-01
ML9208
Description of Commands and Functions
1. DCRAM data write
(Specifies the address of DCRAM and writes the character code of CGROM and CGRAM.)
DCRAM (Data Control RAM) has a 4-bit address to store character code of CGROM and CGRAM.
The character code specified by DCRAM is converted to a 5 × 7 dot matrix character pattern via CGROM or
CGRAM.
(The DCRAM can store 16 characters.)
[Command format]
1st byte
(1st)
2nd byte
(2nd)
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
X0 X1 X2 X3 1 0 0 0
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
C0 C1 C2 C3 C4 C5 C6 C7
: selects DCRAM data write mode and specifies DCRAM
address
(Ex: Specifies DCRAM address 0H)
: specifies character code of CGROM and CGRAM
(written into DCRAM address 0H)
To specify the character code of CGROM and CGRAM continuously to the next address, specify only character
code as follows.
The addresses of DCRAM are automatically incremented. Specification of an address is unnecessary.
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