CY8C24123
CY8C24223, CY8C24423
PSoC
®
Programmable System-on-Chip™
Features
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Powerful Harvard Architecture Processor
❐
M8C Processor Speeds to 24 MHz
❐
8x8 Multiply, 32-Bit Accumulate
❐
Low Power at High Speed
❐
3.0 to 5.25 V Operating Voltage
❐
Operating Voltages Down to 1.0V Using On-Chip Switch
Mode Pump (SMP)
❐
Industrial Temperature Range: -40°C to +85°C
Advanced Peripherals (PSoC Blocks)
❐
Six Rail-to-Rail Analog PSoC Blocks Provide:
• Up to 14-Bit ADCs
• Up to 8-Bit DACs
• Programmable Gain Amplifiers
• Programmable Filters and Comparators
❐
Four Digital PSoC Blocks Provide:
• 8 to 32-Bit Timers, Counters, and PWMs
• CRC and PRS Modules
• Full-Duplex UART
• Multiple SPI™ Masters or Slaves
• Connectable to all GPIO Pins
❐
Complex Peripherals by Combining Blocks
Precision, Programmable Clocking
❐
Internal ± 2.5% 24/48 MHz Oscillator
❐
High-Accuracy 24 MHz with Optional 32 kHz Crystal and PLL
❐
Optional External Oscillator, up to 24 MHz
❐
Internal Oscillator for Watchdog and Sleep
Flexible On-Chip Memory
❐
4K Bytes Flash Program Storage 50,000 Erase/Write Cycles
❐
256 Bytes SRAM Data Storage
❐
In-System Serial Programming (ISSP™)
❐
Partial Flash Updates
❐
Flexible Protection Modes
❐
EEPROM Emulation in Flash
Programmable Pin Configurations
❐
25 mA Sink on all GPIO
❐
Pull up, Pull down, High Z, Strong, or Open Drain Drive
Modes on all GPIO
❐
Up to 10 Analog Inputs on GPIO
❐
Two 30 mA Analog Outputs on GPIO
❐
Configurable Interrupt on all GPIO
Additional System Resources
2
❐
I C™ Slave, Master, and Multi-Master to 400 kHz
❐
Watchdog and Sleep Timers
❐
User-Configurable Low Voltage Detection
❐
Integrated Supervisory Circuit
❐
On-Chip Precision Voltage Reference
Complete Development Tools
❐
Free Development Software (PSoC Designer™)
❐
Full-Featured, In-Circuit Emulator and Programmer
❐
Full Speed Emulation
❐
Complex Breakpoint Structure
❐
128K Bytes Trace Memory
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Logic Block Diagram
Port 2 Port 1 Port 0
Analog
Drivers
PSoC CORE
System Bus
Global Digital Interconnect
SRAM
256 Bytes
Interrupt
Controller
Global Analog Interconnect
Flash 4K
Sleep and
Watchdog
■
SROM
CPU Core (M8C)
Multiple Clock Sources
(Includes IMO, ILO, PLL, and ECO)
■
DIGITAL SYSTEM
Digital
Block Array
(1 Rows,
4 Blocks)
ANALOG SYSTEM
Analog
Block
Array
(2 Columns,
6 Blocks)
Analog
Ref
■
Analog
Input
Muxing
Digital
Clocks
Multiply
Accum.
POR and LVD
Decimator
I
2
C
System Resets
Internal
Voltage
Ref.
Switch
Mode
Pump
SYSTEM RESOURCES
Cypress Semiconductor Corporation
Document Number: 38-12011 Rev. *G
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised December 11, 2008
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CY8C24123
CY8C24223, CY8C24423
PSoC
®
Functional Overview
The PSoC
®
family consists of many Mixed Signal Array with
On-Chip Controller devices. These devices are designed to
replace multiple traditional MCU-based system components with
one, low cost single-chip programmable device. PSoC devices
include configurable blocks of analog and digital logic, and
programmable interconnects. This architecture allows the user
to create customized peripheral configurations that match the
requirements of each individual application. Additionally, a fast
CPU, Flash program memory, SRAM data memory, and config-
urable IO are included in a range of convenient pinouts and
packages.
The PSoC architecture, as shown in the
Logic Block Diagram
on
page 1, is comprised of four main areas: PSoC Core, Digital
System, Analog System, and System Resources. Configurable
global busing allows all the device resources to be combined into
a complete custom system. The PSoC CY8C24x23 family can
have up to three IO ports that connect to the global digital and
analog interconnects, providing access to four digital blocks and
6 analog blocks.
Digital System
The Digital System is composed of four 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.
Figure 1. Digital System Block Diagram
Port 2
Port 1
Port 0
Digital Clocks
From Core
To System Bus
To Analog
System
DIGITAL SYSTEM
Digital PSoC Block Array
Row Input
Configuration
8
8
Row 0
DBB00
DBB01
DCB02
4
DCB03
4
8
8
Row Output
Configuration
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
24 MHz, providing a four MIPS 8-bit Harvard architecture
microprocessor. The CPU uses an interrupt controller with 11
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 4 KB of Flash for program storage, 256
bytes of SRAM for data storage, and up to 2 KB of EEPROM
emulated using the Flash. Program Flash uses four protection
levels on blocks of 64 bytes, allowing customized software IP
protection.
The PSoC device incorporates flexible internal clock generators,
including a 24 MHz IMO (internal main oscillator) accurate to
2.5% 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. If crystal accuracy is desired, the ECO
(32.768 kHz external crystal oscillator) is available for use as a
Real Time Clock (RTC) and can optionally generate a
crystal-accurate 24 MHz system clock using a PLL. The clocks,
together with programmable clock dividers (as a System
Resource), provide the flexibility to integrate almost any timing
requirement into the PSoC device.
PSoC 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 inter-
facing. Every pin also has the capability to generate a system
interrupt on high level, low level, and change from last read.
GIE[7:0]
GIO[7:0]
Global Digital
Interconnect
GOE[7:0]
GOO[7:0]
Digital peripheral configurations include:
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PWMs (8 to 32 bit)
PWMs with Dead band (8 to 32 bit)
Counters (8 to 32 bit)
Timers (8 to 32 bit)
UART 8-bit with selectable parity (up to one)
SPI master and slave (up to one)
I2C slave and master (one available as a System Resource)
Cyclical Redundancy Checker/Generator (8 to 32 bit)
IrDA (up to one)
Pseudo Random Sequence 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 PSoC device family. This allows the optimum
choice of system resources for your application. Family
resources are listed in the table
PSoC Device Characteristics
on
page 4.
Document Number: 38-12011 Rev. *G
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Analog System
The Analog System is composed of six configurable blocks, each
comprised of an opamp circuit allowing the creation of complex
analog signal flows. Analog peripherals are very flexible and can
be customized to support specific application requirements.
Some of the more common PSoC analog functions (most
available as user modules) are:
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Figure 2. Analog System Block Diagram
P0[7]
P0[5]
P0[3]
P0[1]
AGNDIn RefIn
P0[6]
P0[4]
P0[2]
P0[0]
P2[6]
Analog-to-digital converters (up to two, with 6 to 14-bit
resolution, selectable as Incremental, Delta Sigma, and SAR)
Filters (two and four pole band-pass, low-pass, and notch)
Amplifiers (up to two, with selectable gain to 48x)
Instrumentation amplifiers (one with selectable gain to 93x)
Comparators (up to two, with 16 selectable thresholds)
DACs (up to two, with 6 to 9-bit resolution)
Multiplying DACs (up to two, with 6- to 9-bit resolution)
High current output drivers (two with 30 mA drive as a Core
Resource)
1.3V reference (as a System Resource)
DTMF dialer
Modulators
Correlators
Peak detectors
Many other topologies possible
P2[3]
P2[4]
P2[2]
P2[0]
P2[1]
Array Input Configuration
ACI0[1:0]
ACI1[1:0]
Block Array
ACB00
ASC10
ASD20
ACB01
ASD11
ASC21
Analog blocks are provided in columns of three, which includes
one CT (Continuous Time) and two SC (Switched Capacitor)
blocks. The number of blocks is dependant on the device family
which is detailed in the table
PSoC Device Characteristics
on
page 4.
Analog Reference
Interface to
Digital System
RefHi
RefLo
AGND
Reference
Generators
AGNDIn
RefIn
Bandgap
M8C Interface (Address Bus, Data Bus, Etc.)
Document Number: 38-12011 Rev. *G
Page 3 of 43
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CY8C24223, CY8C24423
Additional System Resources
System Resources, some of which have been previously listed,
provide additional capability useful to complete systems.
Additional resources include a multiplier, decimator, switch mode
pump, low voltage detection, and power on reset. Brief state-
ments describing the merits of each system resource follow:
■
Getting Started
The quickest path to understanding the PSoC silicon is by
reading this data sheet and using the PSoC Designer Integrated
Development Environment (IDE). This data sheet is an overview
of the PSoC integrated circuit and presents specific pin, register,
and electrical specifications. For in-depth information, along with
detailed programming information, refer the PSoC Program-
mable Sytem-on-Chip Technical Reference Manual.
For up-to-date Ordering, Packaging, and Electrical Specification
information, refer the latest PSoC device data sheets on the web
at
http://www.cypress.com/psoc.
Digital clock dividers provide three customizable clock
frequencies for use in applications. The clocks can be routed
to both the digital and analog systems. Additional clocks can
be generated using digital PSoC blocks as clock dividers.
A multiply accumulate (MAC) provides a fast 8-bit multiplier
with 32-bit accumulate, to assist in both general math and
digital filters.
The decimator provides a custom hardware filter for digital
signal processing applications including the creation of Delta
Sigma ADCs.
The I2C module provides 100 and 400 kHz communication over
two wires. Slave, master, and multi-master modes are all
supported.
Low Voltage Detection (LVD) interrupts can signal the appli-
cation of falling voltage levels, while the advanced POR (Power
On Reset) circuit eliminates the need for a system supervisor.
An internal 1.3V reference provides an absolute reference for
the analog system, including ADCs and DACs.
An integrated switch mode pump (SMP) generates normal
operating voltages from a single 1.2V battery cell, providing a
low cost boost converter.
■
Development Kits
Development Kits are available from the following distributors:
Digi-Key, Avnet, Arrow, and Future. The Cypress Online Store
contains development kits, C compilers, and all accessories for
PSoC development. Go to the Cypress Online Store web site at
http://www.cypress.com,
click the Online Store shopping cart
icon at the bottom of the web page, and click
PSoC (Program-
mable System-on-Chip)
to view a current list of available items.
■
■
■
Technical Training
Free PSoC technical training is available for beginners and is
taught by a marketing or application engineer over the phone.
PSoC training classes cover designing, debugging, advanced
analog, and application-specific classes covering topics, such as
PSoC and the LIN bus. Go to
http://www.cypress.com,
click on
Design Support located on the left side of the web page, and
select Technical Training for more details.
■
■
PSoC Device Characteristics
Depending on your PSoC device characteristics, the digital and
analog systems can have 16, 8, or 4 digital blocks and 12, 6, or
3 analog blocks. The following table lists the resources available
for specific PSoC device groups.
Table 1. PSoC Device Characteristics
Analog
Columns
Analog
Outputs
Analog
Inputs
Analog
Blocks
PSoC Part
Number
Digital
Blocks
Digital
IO
Digital
Rows
Consultants
Certified PSoC Consultants offer everything from technical
assistance to completed PSoC designs. To contact or become a
PSoC Consultant go to
http://www.cypress.com,
click on Design
Support located on the left side of the web page, and select
CYPros Consultants.
Technical Support
PSoC application engineers take pride in fast and accurate
response. They can be reached with a 4-hour guaranteed
response at
http://www.cypress.com/support.
CY8C29x66 up to 4
64
CY8C27x66 up to 2
44
CY8C27x43 up to 2
44
CY8C24x23 up to 1
24
CY8C22x13 up to 1
16
16
8
8
4
4
12
12
12
12
8
4
4
4
2
1
4
4
4
2
1
12
12
12
6
3
Application Notes
A long list of application notes can assist you in every aspect of
your design effort. To view the PSoC application notes, go to the
http://www.cypress.com
web site and select Application Notes
under the Design Resources list located in the center of the web
page. Application notes are listed by date as default.
Document Number: 38-12011 Rev. *G
Page 4 of 43
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CY8C24223, CY8C24423
Development Tools
The Cypress MicroSystems PSoC Designer is a Microsoft
®
Windows-based, integrated development environment for the
Programmable System-on-Chip (PSoC) devices. The PSoC
Designer IDE and application runs on Windows 98, Windows NT
4.0, Windows 2000, Windows Millennium (Me), or Windows XP
(refer
Figure 3).
PSoC Designer helps the customer to select an operating
configuration for the PSoC, write application code that uses the
PSoC, and debug the application. This system provides design
database management by project, an integrated debugger with
In-Circuit Emulator, in-system programming support, and the
CYASM macro assembler for the CPUs.
PSoC Designer also supports a high-level C language compiler
developed specifically for the devices in the family.
Figure 3. PSoC Designer Subsystems
PSoC Designer Software Subsystems
Device Editor
The Device Editor subsystem allows the user to select different
onboard analog and digital components called user modules
using the PSoC blocks. Examples of user modules are ADCs,
DACs, Amplifiers, and Filters.
The device editor also supports easy development of multiple
configurations and dynamic reconfiguration. Dynamic
configuration allows for changing configurations at run time.
PSoC Designer sets up power on initialization tables for selected
PSoC block configurations and creates source code for an
application framework. The framework contains software to
operate the selected components and, if the project uses more
than one operating configuration, contains routines to switch
between different sets of PSoC block configurations at run time.
PSoC Designer can print out a configuration sheet for a given
project configuration for use during application programming in
conjunction with the Device Data Sheet. After the framework is
generated, the user can add application-specific code to flesh
out the framework. It is also possible to change the selected
components and regenerate the framework.
Design Browser
The Design Browser allows users to select and import precon-
figured designs into the user’s project. Users can easily browse
a catalog of preconfigured designs to facilitate time-to-design.
Examples provided in the tools include a 300-baud modem, LIN
Bus master and slave, fan controller, and magnetic card reader.
Application Editor
PSoC
TM
Designer
Graphical Designer
Interface
Context
Sensitive
Help
Commands
Results
Importable
Design
Database
Device
Database
Application
Database
Project
Database
User
Modules
Library
PSoC
Configuration
Sheet
PSoC
TM
Designer
Core
Engine
In the Application Editor you can edit your C language and
Assembly language source code. You can also assemble,
compile, link, and build.
Assembler.
The macro assembler allows the assembly code to
be merged seamlessly with C code. The link libraries automati-
cally use absolute addressing or can be compiled in relative
mode, and linked with other software modules to get absolute
addressing.
C Language Compiler.
A C language compiler is available that
supports Cypress MicroSystems’ PSoC family devices. Even if
you have never worked in the C language before, the product
quickly allows you to create complete C programs for the PSoC
family devices.
The embedded, optimizing C compiler provides all the features
of C tailored to the PSoC architecture. It comes complete with
embedded libraries providing port and bus operations, standard
keypad and display support, and extended math functionality.
Manufacturing
Information
File
Emulation
Pod
In-Circuit
Emulator
Device
Programmer
Document Number: 38-12011 Rev. *G
Page 5 of 43
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