SN32F760 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 194
Version 2.0
16.9 LCD REGISTERS
Base Address: 0x4003 4000
16.9.1 LCD Control register (LCD_CTRL)
Address Offset: 0x00
Reset value: 0x1000 0302
Note:
1. Segment 24~Segment 31 pins are shared with P0.0~P0.7.
2. When these pins are used as general purpose I/O mode, the SEG2SEL bit shall be set as
“0”,
and VDD3 shall be connected to VDD with PCB layout.
3. When these pins are used as LCD pins, the SEG2SEL bit shall be set as
“1”, and please refer to
R-type LCD application circuit
C-type LCD application circuit
4. Segment 12~Segment 23 pins are shared with P0.10~P0.15 and P1.0~P1.5.
5. When these pins are used as general purpose I/O mode, the SEG1SEL bit shall be set as
“0”,
and VDD2 shall be connected to VDD with PCB layout.
6. When these pins are used as LCD pins, the SEG1SEL bit shall be set as
“1”, and please refer to
R-type LCD application circuit
C-type LCD application circuit
Bit
Name
Description
Attribute
Reset
31:30
Reserved
R/W
0
29:28
DRIVEP[1:0]
LCD panel driving ability
00: Strong (Larger panel)
01: Medium (Medium panel)
10: Reserved
11: Low (Smaller panel)
R/W
01b
27:12
Reserved
R/W
0
11
LCDRATE
LCD clock rate (LCD_PCLK)
0: LCD clock source / 64
1: LCD clock source / 128
R/W
0
10
LCDCLK
LCD clock source selection
0: ILRC
1: ELS XTAL
R/W
0
9:8
DUTY[1:0]
Duty selection
00: Reserved
01: 1/2 duty. HW will assign COM0~1 as LCD pins instead of GPIO.
P1.13, P1.12 is still available to be used as GPIO in R-type.
10: 1/3 duty. HW will assign COM0~2 as LCD pins instead of GPIO.
P1.13 is still available to be used as GPIO in R-type.
11: 1/4 duty. HW will assign COM0~3 as LCD pins instead of GPIO.
R/W
11b
7
Reserved
R/W
0
6
SEGSEL2
SEG24~31 enable bit
0: Disable. SEG24~31 pins are GPIO.
1: Enable. HW will assign SEG24~31 pins as LCD pins instead of GPIO.
R/W
0
5
SEGSEL1
SEG12~23 enable bit
0: Disable. SEG12~23 pins are GPIO.
1: Enable. HW will assign SEG12~23 pins as LCD pins instead of GPIO.
R/W
0
4
BIAS
LCD Bias selection
0: 1/3 Bias
1: 1/2 Bias
R/W
0
Содержание SN32F755
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