CY8CLED04
Document Number: 001-13108 Rev. **
Page 3 of 33
EZ-Color Functional Overview
Cypress' EZ-Color family of devices offers the ideal control
solution for High Brightness LED applications requiring intel-
ligent dimming control. EZ-Color devices combine the power and
flexibility of PSoC (Programmable System-on-Chip™); with
Cypress'
PrISM
(precise
illumination
signal
modulation)
modulation technology providing lighting designers a fully
customizable and integrated lighting solution platform.
The EZ-Color family support up to 16 independent LED channels
with up to 32 bits of resolution per channel, enabling lighting
designers the flexibility to choose the LED array size and color
quality. PSoC Express software, with lighting specific drivers,
can significantly cut development time and simplify implemen-
tation of fixed color points through temperature and LED binning
compensation. EZ-Color's virtually limitless analog and digital
customization allow for simple integration of features in addition
to intelligent lighting, such as CapSense, Battery Charging,
Image Stabilization, and Motor Control during the development
process. These features, along with Cypress' best-in-class
quality and design support, make EZ-Color the ideal choice for
intelligent HB LED control applications.
Target Applications
■ LCD Backlight
■ Large Signs
■ General Lighting
■ Architectural Lighting
■ Camera/Cell Phone Flash
■ Flashlights
The PSoC Core
The PSoC Core is a powerful engine that supports a rich feature
set. The core includes a CPU, memory, clocks, and configurable
GPIO (General Purpose IO).
The M8C CPU core is a powerful processor with speeds up to 68
MHz, providing a four MIPS 8-bit Harvard architecture micropro-
cessor. The CPU utilizes an interrupt controller with up to 20
vectors, to simplify programming of real time embedded events.
Program execution is timed and protected using the included
Sleep and Watch Dog Timers (WDT).
Memory encompasses 16K of Flash for program storage, 1K of
SRAM for data storage, and up to 2K of EEPROM emulated
using the Flash. Program Flash utilizes four protection levels on
blocks of 64 bytes, allowing customized software IP protection.
The EZ-Color family incorporates flexible internal clock gener-
ators, including a 24 MHz IMO (internal main oscillator) accurate
to 8% over temperature and voltage. The 24 MHz IMO can also
be doubled to 48 MHz for use by the digital system. A low power
32 kHz ILO (internal low speed oscillator) is provided for the
Sleep timer and WDT. The clocks, together with programmable
clock dividers (as a System Resource), provide the flexibility to
integrate almost any timing requirement into the EZ-Color
device. In USB systems, the IMO will self-tune to ± 0.25%
accuracy for USB communication.
EZ-Color GPIOs provide connection to the CPU, digital and
analog resources of the device. Each pin’s drive mode may be
selected from eight options, allowing great flexibility in external
interfacing. Every pin also has the capability to generate a
system interrupt on high level, low level, and change from last
read.
The Digital System
The Digital System is composed of 4 digital PSoC blocks. Each
block is an 8-bit resource that can be used alone or combined
with other blocks to form 8, 16, 24, and 32-bit peripherals, which
are called user module references.
Digital peripheral configurations include those listed below.
■ PrISM (8 to 32 bit)
■ Full-Speed USB (12 Mbps)
■ PWMs (8 to 32 bit)
■ PWMs with Dead band (8 to 24 bit)
■ Counters (8 to 32 bit)
■ Timers (8 to 32 bit)
■ UART 8 bit with selectable parity
■ SPI master and slave
■ I2C slave and multi-master
■ Cyclical Redundancy Checker/Generator (8 to 32 bit)
■ IrDA
■ Generators (8 to 32 bit)
The digital blocks can be connected to any GPIO through a
series of global buses that can route any signal to any pin. The
buses also allow for signal multiplexing and for performing logic
operations. This configurability frees your designs from the
constraints of a fixed peripheral controller.
Digital blocks are provided in rows of four, where the number of
blocks varies by EZ-Color device family. This allows you the
optimum choice of system resources for your application. Family
resources are shown in the table titled EZ-Color Device Charac-
teristics.
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