msm6222b Oki Semiconductor, msm6222b Datasheet - Page 24
msm6222b
Manufacturer Part Number
msm6222b
Description
Msm6222b Dot Matrix Lcd Controller With 16-dot Common Driver And 40-dot Segment Driver
Manufacturer
Oki Semiconductor
Datasheet
1.MSM6222B.pdf
(45 pages)
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¡ Semiconductor
MSM6222B-xx
Built-in Reset Circuit
The MSM6222B-xx is automatically initialized when the power is turned on.
During initialization, the busy flag (BF) holds "H" and does not accept instructions (other
than the busy flag read).
The busy flag holds "H" for 15 ms after V
reaches 4.5V or more.
DD
During initialization, the MSM6222B-xx executes the follwing instructions:
• Display clear
• Data length of interface with CPU: 8 bits (8B/4B = "H")
• LCD: 1-line display (N = "L")
• Character font: 5 x 7 dots (F = "L")
• ADC: Increment (I/D = "H")
• No display shift (SH = "L")
• Display: Off (DI = "L")
• Cursor: Off (C = "L")
• No blink (B = "L")
It is required to satisfy the following power supply conditions.
4.5V
0.2V
0.2V
0.2V
V
DD
t
t
ON
OFF
0.1ms £ t
£ 100ms
1ms £ t
ON
OFF
Fig. 1. Power ON/OFF Waveform
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