
ML62Q1000
Series User's Manual
Chapter 27 LCD Driver
FEUL62Q1000
27-9
27.2.2 Bias Control Register(BIASCON)
BIASCON is a special function register (SFR) to adjust the display contrast in 32 levels in the internal boosting mode.
BIASCONL is a special function register (SFR) used to control the bias generation circuit.
Write the BIASCONL when the display turns off (when the LMD1 bit and LMD0 bit of DPSCON register are "0").
Writing to the BIASCONL is disabled in other modes.
Address:
0xF0F0(BIASCONL/BIASCON)
,
0xF0F1(BIASCONH)
Access:
R/W
Access size:
8/16bits
Initial value:
0x0008
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
BIASCON
Byte
BIASCONH
BIASCONL
But
−
−
−
LCN4 LCN3 LCN2 LCN1 LCN0
BTSE
L1
BTSE
L0
DSM
D1
DSM
D0
BSN2 BSN1 BSN0
BSO
N
R/W
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Bit
No.
Bit name
Description
15 to
13
Reserved bits
-
12 to 8
LCN4 to LCN0
These bits are used to adjust the display contrast in 32 voltage levels.
It is adjustable by controlling the VL1 voltage.
See the electrical characteristics in the data sheet for more details about the voltage level.
Contrast (voltage)
0x1F:
Thick (high)
0x1E:
:
to
0x01:
:
0x00:
Thin (low) (initial value)
7, 6
BTSEL1,
BTSEL0
These bits are used to select the means of bias generation circuit operation.
Select the external supply type when driving the LED.
00:
External supply type (initial value)
01:
Internal boosting type
10:
External supply capacitive dividing type
11:
Internal capacitive dividing type
5
DSMD1
This bit is used to select the display device.
0:
LCD (initial value)
1:
LED
4
DSMD0
This bit is used to select the white & black reverse display mode.
0:
Normal display (initial value)
1:
Normal display (initial value)
3 to 1
BSN2 to BSN0 These bits are used to select the clock for boosting the voltage in the bias generation circuit.
000:
LSCLK(32.768kHz)
001:
1/2 LSCLK(16.384kHz)
010:
1/4 LSCLK(8.192kHz)
011:
1/8 LSCLK(4.096kHz)
100:
1/16 LSCLK(2.048kHz) (Initial)
101:
1/32 LSCLK(1.02kHz)
110:
1/64 LSCLK(512Hz)
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...