
ML62Q1000
Series User's Manual
Chapter 27 LCD Driver
FEUL62Q1000
27-25
27.3 Description of Operation
27.3.1 Operation of LCD Driver Circuit LCD
Figure 27-3 shows the LCD driver circuit operation.
Figure 27-3 LCD Driver Circuit Operation
①
A system reset stops the operation of bias generation circuit and LCD driver and the common output and segment
output pins get high impedance state.
②
Select segments by setting the segment mode register. The output pins of selected segment make a Vss level
output.
③
Set the frame frequency and duty by the display mode register (DSPMOD). The common output pins
corresponding to the selected duties make a Vss level output.
④
Set the bias generation circuit operation mode by the bias control register (BIASCON).
⑤
To use a display type other than external supply mode, turn on the bias generation circuit by setting BSON bit of
the bias control register (BIASCON) to "1".
⑥
Set display data in the display registers (DSPR00 to DSPR64).
⑦
Wait for the bias activation time (tBIAS ) or longer. Then set to the display mode using the LMD1 and LMD0
bits of the display control register (DSPCON). (The display waveform is output to common output and segment
output pins.)
For the bias activation time (tBIAS ), refer to the electrical characteristics in the data sheet.
27.3.2 Display Register Segment Map
Figure 27-4 shows the segment map configuration of the display registers (DSPR00 to DSPR64).
Figure 27-4 Display Register Segment Map Configuration
System reset
BIASCON.BSON
LMD1, LMD0
LCD bias voltage
V
L1
to V
L3
Common output
COM0 to COM7
Segment output
SEG0 to SEG64
Operating state
LCD bias voltage generated
Common output waveform
Segment output waveform
BIAS activation time (t
BIAS
)
(1)
(4)(5)
(6)(7)
HiZ output
(2)
(3)
Operating state
Reset
HiZ output
DSPR00[7]
SEG
0
COM0
COM1
:
COM7
:
DSPR00[1]
DSPR00[0]
DSPR01[7]
:
DSPR01[1]
DSPR01[0]
SEG
1
SEG
6
3
SEG
6
4
DSPR63[7]
:
DSPR63[1]
DSPR63[0]
DSPR64[7]
:
DSPR64[1]
DSPR64[0]
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...