SAM4L Datasheet, PDF (1028/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
Dedicated Low Power Waveform, Contrast Control, Extended Interrupt Mode, ASCII Character
Mapping... are defined to offload the CPU, reduce interrupts and reduce power consumption.
To reduce hardware design complexity, the module includes integrated LCD buffers, an inte-
grated power supply voltage.
39.3 Block Diagram
Figure 39-2. LCDCA Block Diagram
LCDCA
BPM
CLK32
APB Interface
IRQ
Automated
Modes
Timing
Display
Memory
Shadow
Display
Memory
Analog
Switch
Array
SEGx
COMy
LCD Power
Supply
VLCD
BIASH
BIASL
39.4 I/O Lines Description
Table 39-1. I/O Lines Description
Pin Name
Pin Description
SEGx
Segment terminal x
COMy
Common terminal y
VLCD
Bias voltage
BIASL
BIASH
CAPL
Bias voltage (= 1/3 V_LCD)
Bias voltage (= 2/3 V_LCD)
High voltage end of flying capacitor
CAPH
Low voltage end of flying capacitor
Type
Analog
Analog
Analog
Analog
Analog
Analog
Analog
39.5 Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
42023C–SAM–02/2013
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