SN32F760 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 184
Version 2.0
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4x32 LCD DRIVER
16.1 OVERVIEW
The MCU builds in 4x32 (4 commons and up to 32 segments, 128 dots) LCD driver, includes R type and C type (1C
and 4C) structures with 4 common pins and up to 32 segment pins. The LCD scan timing can support 1/2 duty, 1/3
duty, and 1/4 duty, besides, 1/2 bias or 1/3 bias structure are supported. Of these pins, all common and segment pins
are shared with GPIO, and can be selected by programming LCD_CTRL register.
R type is using internal or external
bias circuit to adjust LCD power and bias voltage. C type is using internal charge pump to adjust LCD power and bias
voltage.
16.2 FEATURES
1.
Support R/C-type
2.
Support up to 128 (4 x 32) dots
3.
Common 0~3 and Segment 0~31, V3, V2, CL+, CL- are all shared with GPI/O pins
4.
Support 1/2 bias and 1/3 bias voltage
5.
Support 1/2 duty, 1/3 duty, 1/4 duty
6.
Configurable frame frequency
7.
Internal Charge pump, adjustable contrast adjustment , and configurable charge pump frequency
8.
Embedded LCD bias reference ladder (R-Type)
9.
LCD frame interrupt
16.3 PIN DESCRIPTION
Pin Name
Type
Description
GPIO Configuration
SEGx
O
LCD driver segment pins
COMx
O
LCD driver common pins
CL+
P
C-Type LCD charge pump capacitor
CL-
P
C-Type LCD charge pump capacitor
VLCD1
P
LCD driver power input pin for COM0~3, SEG0~11
VLCD2
P
LCD driver power input pin for SEG12~23
VLCD3
P
LCD driver power pin for SEG24~31
V3
P
2/3 VLCD bias voltage
V2
P
1/3 VLCD bias voltage
Содержание SN32F755
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