CY8C5248LTI-030 Cypress Semiconductor Corp, CY8C5248LTI-030 Datasheet - Page 47

• Manufacturer Part Number: CY8C5248LTI-030
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY8C5248LTI-030

• Lead Free Status / Rohs Status: Compliant

8.3.2 LUT
The CY8C52 family of devices contains two LUTs. The LUT is a
two input, one output lookup table that is driven by one or two of
the comparators in the chip. The output of any LUT is routed to
the digital system interface of the UDB array. From the digital
system interface of the UDB array, these signals can be
connected to UDBs, DMA controller, I/O, or the interrupt
controller. The LUT control word written to a register sets the
logic function on the output. The available LUT functions and the
associated control word is shown in
Table 8-1. LUT Function vs. Program Word and Inputs
Document Number: 001-66236 Rev. *A
Control Word
0000b
0001b
0010b
0100b
0101b
1000b
1001b
1010b
0011b
0110b
0111b
1011b
1100b
1101b
1110b
1111b
Output (A and B are LUT inputs)
Routing
Analog
From
A AND (NOT B )
(NOT A ) AND B
Table 8-1
A OR (NOT B )
(NOT A ) OR B
FALSE (‘0’)
A XNOR B
A NAND B
TRUE (‘1’)
A XOR B
A NOR B
A AND B
A OR B
NOT B
NOT A
A
B
+
comp0
_
PRELIMINARY
.
Figure 8-4. Analog Comparator
4
LUT0
4
4
LUT1
4
ANAIF
UDBs
4
LUT2
4
8.4 LCD Direct Drive
The PSoC LCD driver system is a highly configurable peripheral
designed to allow PSoC to directly drive a broad range of LCD
glass. All voltages are generated on chip, eliminating the need
for external components. With a high multiplex ratio of up to 1/16,
the CY8C52 family LCD driver system can drive a maximum of
736 segments. The PSoC LCD driver module was also designed
with the conservative power budget of portable devices in mind,
enabling different LCD drive modes and power down modes to
conserve power.
PSoC Creator provides an LCD segment drive component. The
component wizard provides easy and flexible configuration of
LCD resources. You can specify pins for segments and
commons along with other options. The software configures the
device to meet the required specifications. This is possible
because of the programmability inherent to PSoC devices.
Key features of the PSoC LCD segment system are:
4
LCD panel direct driving
Type A (standard) and Type B (low power) waveform support
Wide operating voltage range support (2 V to 5 V) for LCD
panels
Static, 1/2, 1/3, 1/4, 1/5 bias voltage levels
Internal bias voltage generation through internal resistor ladder
Up to 62 total common and segment outputs
Up to 1/16 multiplex for a maximum of 16 backplane/common
outputs
Up to 62 front plane/segment outputs for direct drive
Drives up to 736 total segments (16 backplane × 46 front plane)
Up to 64 levels of software controlled contrast
Ability to move display data from memory buffer to LCD driver
through DMA (without CPU intervention)
Adjustable LCD refresh rate from 10 Hz to 150 Hz
LUT3
PSoC
4
comp1
®
_
+
5: CY8C52 Family Datasheet
Routing
Analog
From
Page 47 of 95