CP2400AB Silicon Laboratories Inc, CP2400AB Datasheet - Page 12

BOARD EVAL SPI LCD DRIVER CP2400

CP2400AB

Manufacturer Part Number
CP2400AB
Description
BOARD EVAL SPI LCD DRIVER CP2400
Manufacturer
Silicon Laboratories Inc
Datasheets

Specifications of CP2400AB

Main Purpose
LCD Development
Embedded
No
Utilized Ic / Part
CP2400
Primary Attributes
I²C, SMBus Interfaces
Secondary Attributes
Up to 128 segments
Product
Microcontroller Accessories
Core Processor
CP2400
Clock Speed
20 MHz
Interface Type
SPI
Timers
2
Operating Supply Voltage
1.8 V to 3.6 V
Cpu Core
CP2400
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
336-1857
CP2400/1-DK
If using a CP2400, this line should say:
#define BUS_INTERFACE
SPI
6.4.3. Example Selection
The example that is run on the CP2400/1 LCD development board can be selected in the file, app_config.h. The
available examples include a voltage display example, digit display example, and several current measurement
examples. A list of available examples is included in the file, app_config.h. The following line of code would select
the digit display example:
#define EXAMPLE
DISPLAY_DIGITS
The display digits example will first show the numbers “01234567”, clear the LCD, and then show “76543210”. For
the voltage display example, the channel being measured can be selected by modifying the CHANNEL_SELECT
definition in app_config.h. The available selections are VDD and the potentiometer (POT). To measure VDD,
change the corresponding EXAMPLE definition in app_config.h. The VDD voltage will now be displayed on the
LCD. To measure the potentiometer voltage, change the corresponding EXAMPLE definition in app_config.h, and
place shorting blocks on J16 and J15[2-3] on the C8501F930 Target Board. The potentiometer voltage will now be
displayed on the LCD.
The various current measurement examples can also be selected in app_config.h. These examples place the
CP240x in various power modes. The file, lcd_lib_config.h, has parameters that can be modified that will affect the
current draw, such as the LCD refresh rate, the mux mode, and the bias mode.
12
Rev. 0.1

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