MSM9000B-xx OKI electronic componets, MSM9000B-xx Datasheet - Page 19

• Manufacturer Part Number: MSM9000B-xx
• Description: DOT MATRIX LCD CONTROLLER
• Manufacturer: OKI electronic componets

¡ Semiconductor
Explanation of Commands
[D7, D6, D5, D4, D3, D2, D1, D0], X = Don't care
• LPA (Load Pointer Address)
• LOT (Load Option)
• SF (Set Frequency)
• BKCG1/0 (Bank Change 1/0)
[1, 1, A5, A4, A3, A2, A1, A0]
This command sets in the address pointer the address of the command to be executed or the
address of the display data to be input. The settable addresses are inconsecutive addresses
00H to 0BH, 10H to 1BH, 20H to 2BH, 30H to 3BH represented by A5 to A0. When addresses
0CH to 0FH, 1CH to 1FH, 2CH to 2FH, or 3CH to 3FH are set, 00H is assumed.
After RESET = "L", the address is set to 00H.
[1, 0, 1, 1, X, X, I1, I0]
This command executes the additional function specified by I1 and I0 to the display of the
current address when the AINC command is executed. Additional functions are shown
below.
After RESET = "L",, both I1 and I0 are set to "0".
[1, 0, 1, 0, X, X, F1, F0]
This command sets the number by which the external clock input from the XT pin is divided
in order to get the source frequency inside the IC. This command is valid when 32K/EXT pin
is "L". The dividing ratio is specified by F1 and F0 in the command. The table below lists the
source oscillation frequencies in the IC.
After RESET = "L", both F1 and F0 are set to "0".
[1, 0, 0, X, 0, 0, 0, 1/0]
This command changes addresses (banks) to be displayed. The command is valid only when
the duty is 1/9. When D0 is 0, addresses 0 to 11 (character 1), 32 to 43, and 48 to 59 (arbitrators
1 and 2) are displayed. When D0 is "1", addresses 16 to 27 (character 2), 32 to 43, and 48 to 59
(arbitrators 1 and 2) are displayed. The command and display data can be set regardless of
the bank setting.
After RESET = "L", D1 is set to "0".
I1
0
0
1
1
I0
0
1
0
1
None
After this command is executed, the blank code is writtern each time AINC is executed.
After this command is executed, blinking is canceled each time AINC is executed.
The above two additional functions are ORed.
F1
0
0
1
1
F0
0
1
0
1
Frequency of source oscillation in the IC
Additional function
XT ∏ 2
XT ∏ 4
XT ∏ 8
XT
MSM9000B-xx
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