msm9201-01 Oki Semiconductor, msm9201-01 Datasheet - Page 20

• Manufacturer Part Number: msm9201-01
• Description: Fluorescent Display Tube Controller Driver
• Manufacturer: Oki Semiconductor

¡ Semiconductor
2. CGRAM data write
[Command format]
To specify character pattern data continuously to the next address, specify only character pattern
data as follows.
Since the addresses of CGRAM are automatically incremented, they do not need to be specified.
The 2nd to 6th byte (character pattern data) are regarded as one data item, so 300 ns is sufficient
for t
2nd byte
CGRAM (Character Generator RAM) has 4-bit addresses to store 5¥7 dot matrix character
patterns.
A character pattern stored in CGRAM can be displayed by specifying the character code
(address) in DCRAM.
The addresses of CGRAM are assigned to 00H to 0FH. (All the other addresses are the
CGROM addresses.)
(The CGRAM can store 16 types of character patterns.)
3rd byte
1st byte
4th byte
5th byte
6th byte
(Specifies the addresses 00H to 0FH of CGRAM and writes character pattern data.)
DOFF
(2nd)
(3rd)
(1st)
(4th)
(5th)
(6th)
time between bytes.
LSB
LSB
LSB
LSB
LSB
LSB
B0 B1 B2 B3 B4 B5 B6 B7
X0 X1 X2 X3
B0 B1 B2 B3 B4 B5 B6 B7
C0 C5 C10 C15 C20 C25 C30
B0 B1 B2 B3 B4 B5 B6 B7
C1 C6 C11 C16 C21 C26 C31
B0 B1 B2 B3 B4 B5 B6 B7
C2 C7 C12 C17 C22 C27 C32
B0 B1 B2 B3 B4 B5 B6 B7
C3 C8 C13 C18 C23 C28 C33
B0 B1 B2 B3 B4 B5 B6 B7
C4 C9 C14 C19 C24 C29 C34
*
0
1
MSB
MSB
MSB
MSB
MSB
MSB
*
*
*
*
*
0
: selects CGRAM data write mode and specifies
: specifies 1st column data.
: specifies 2nd column data.
: specifies 3rd column data.
: specifies 4th column data.
: specifies 5th column data.
CGRAM address.
(Ex: specifies CGRAM address 00H)
(written into CGRAM address 00H)
(written into CGRAM address 00H)
(written into CGRAM address 00H)
(written into CGRAM address 00H)
(written into CGRAM address 00H)
PEDL9201-03
MSM9201-01
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