ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 18 LCD Drivers
18-12
18.3 Description of Operation
18.3.1 Operation of LCD Drivers and Bias Generation Circuit
Figure 18-4 shows the operation of the LCD drivers and the bias generation circuit.
Figure 18-4 Operation of LCD Drivers and Bias Generation Circuit
①
System reset causes the bias generation circuit and the LCD drivers to stop operation and V
SS
level to be output
to each of the common and segment pins.
②
By using the bias circuit control register (BIASCON), select 1/2 bias or 1/3 bias and select the bias voltage
multiplying clock.
③
Set a frame frequency and a duty by using the display mode register 0 (DSPMOD0).
④
Set display data in the display registers (DSPR00 to DSPR15).
⑤
On the display control register (DSPCON), set the LMD1 and LMD0 bits to the display mode. (Display
waveform is output to each segment pin.)
Reset
RESET_N
Internal BIAS ON Signal
LMD1, LMD0
LCD bias voltage
V
L1
∼
V
L3
Common output
COM0
∼
COM4
Segment output
SEG0
∼
SEG21
V
SS
V
SS
Generation of LCD bias voltage
Common Output Waveforms
Segment Output Waveform
c
g
def
Содержание ML610472
Страница 12: ...Chapter 1 Overview...
Страница 38: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 48: ...Chapter 4 MCU Control Function...
Страница 62: ...Chapter 5 Interrupts...
Страница 82: ...Chapter 6 Clock Generation Circuit...
Страница 94: ...Chapter 7 Time Base Counter...
Страница 105: ...Chapter 8 Capture...
Страница 114: ...Chapter 9 Timer...
Страница 133: ...Chapter 10 Watchdog Timer...
Страница 141: ...Chapter 11 UART...
Страница 164: ...Chapter 12 Port 0...
Страница 173: ...Chapter 13 Port 2...
Страница 180: ...Chapter 14 Port 3...
Страница 188: ...Chapter 15 Port 4...
Страница 199: ...Chapter 16 Port 6...
Страница 205: ...Chapter 17 RC Oscillation Type A D Converter...
Страница 225: ...Chapter 18 LCD Drivers...
Страница 243: ...Chapter 19 Power Supply Circuit...
Страница 245: ...Chapter 20 uEASE Flash Writer System...
Страница 249: ...Chapter 21 Software Development...
Страница 258: ...Appendixes...
Страница 280: ...Revision History...