Cypress Semiconductor CY8C24123A, CY8C24223A, CY8C24423A Specification Sheet
CY8C24123A
CY8C24223A, CY8C24423A
PSoC® Programmable System-on-Chip™
Features
DIGITAL SYSTEM
SRAM
256 Bytes
Interrupt
Controller
Sleep and
Watchdog
Multiple Clock Sources
(Includes IMO, ILO, PLL, and ECO)
Global Digital Interconnect
Global Analog Interconnect
PSoC CORE
CPU Core (M8C)
SROM Flash 4K
Digital
Block
Array
Multiply
Accum.
Switch
Mode
Pump
Internal
Voltage
Ref.
Digital
Clocks
POR and LVD
System Resets
Decimator
SYSTEM RESOURCES
ANALOG SYSTEM
Analog
Ref
Analog
Input
Muxing
I2C
Port 2 Port 1 Port 0
Analog
Drivers
System Bus
Analog
Block
Array
Logic Block Diagram
■ Powerful Harvard Architecture Processor
❐ M8C Processor Speeds to 24 MHz
❐ 8x8 Multiply, 32-Bit Accumulate
❐ Low Power at High Speed
❐ 2.4 to 5.25V 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 9-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 Oscillato r
❐ 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 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
❐ Up to Ten Analog Inputs on GPIO
❐ Two 30 mA Analog Outputs on GPIO
❐ Configurable Interrupt on All GPIO
Modes on All GPIO
■ New CY8C24x23A PSoC Device
❐ Derived From the CY8C24x23 Device
❐ Low Power and Low Voltage (2.4V)
■ Additional System Resources
2
❐ I
C™ Slave, Master, and MultiMaster 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 Trace Memory
Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Document Number: 38-12028 Rev. *I Revised December 11, 2008
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PSoC® Functional Overview
DIGITAL SYSTEM
To System Bus
D
i
g
i
t
a
l
C
l
o
c
k
s
F
r
o
m
C
o
r
e
Digital PSoC Block Array
To Analog
System
8
Row Input
Configuration
Row Output
Configuration
88
8
Row 0
DBB00 DBB01 DCB02 DCB03
4
4
GIE[7:0]
GIO[7:0]
GOE[7:0]
GOO[7:0]
Global Digital
Interconnect
Port 2
Port 1
Port 0
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
a low cost single-chip programmable device. PSoC devices
include configurable blocks of analog and digital logic, and
Digital System
The Digital System consists of 4 digital PSoC blocks. Each block
is an 8-bit resource that may be used alone or comb ined with
other blocks to form 8, 16, 24, and 32-bit peripherals, which are
called user module references.
Figure 1. Digital System Block Diagram
programmable interconnects. This architecture enables 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
configurable IO are included in a range of convenient pinouts and
packages.
The PSoC architecture, shown in Figure 1, consists of four main
areas: PSoC Core, Digital System, Analog System, and System
Resources. Configurable global busing allows combining all the
device resources into a complete custom system. The PSoC
CY8C24x23A family can have up to three IO ports that connect
to the global digital and analog interconnects, providing access
to 4 digital blocks and 6 analog blocks.
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 Watchdog 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 required, 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
interfacing. Every pin can generate a system interrupt on high
level, low level, and change from last read.
Digital peripheral configurations are:
■ 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 (one is available as a System
Resource)
■ Cyclical Redundancy Checker/Generator (8 to 32 bit)
■ IrDA
■ Pseudo Random Sequence Generators (8 to 32 bit)
The digital blocks may 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 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 gives a choice of
system resources for your application. Family resources are
shown in Table 1 on page 4.
Document Number: 38-12028 Rev. *I Page 2 of 56
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Analog System
ACB00 ACB01
Block Array
Array Input Configuration
ACI1[1:0]
ASD20
ACI0[1:0]
P0[6]
P0[4]
P0[2]
P0[0]
P2[2]
P2[0]
P2[6]
P2[4]
RefIn
AGNDIn
P0[7]
P0[5]
P0[3]
P0[1]
P2[3]
P2[1]
Reference
Generators
AGNDIn
RefIn
Bandgap
RefHi
RefLo
AGND
ASD11
ASC21
ASC10
Interface to
Digital System
M8C Interface (Address Bus, Data Bus, Etc.)
Analog Reference
The Analog System consists of six configurable blocks, each
consisting of an opamp circuit that allows 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:
■ 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 PSoC
Core resource)
■ 1.3V reference (as a System Resource)
■ DTMF Dialer
■ Modulators
■ Correlators
■ Peak Detectors
■ Many other topologies possible
Analog blocks are arranged in a column of three, which includes
one CT (Continuous Time) and two SC (Switched Capacitor)
blocks, as shown in Figure 2.
Figure 2. Analog System Block Diagram
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Additional System Resources
System Resources, some of which are listed in the previous
sections, provide additional capability useful to complete
systems. Additional resources include a multiplier, decimator,
switch mode pump, low voltage detection, and power on reset.
Statements describing the merits of each system resource
follow:
■ 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 may
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 are 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.
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 Programmable 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.
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
4 analog blocks. Table 1 lists the resources available for specific
PSoC device groups. The PSoC device covered by this data
sheet is highlighted in this table.
Table 1. PSoC Device Characteristics
PSoC Part
Number
CY8C29x66 up to 644 16 12 4 4 12 2K 32K
CY8C27x43
CY8C24x94 49 1 4 48 2 2 6 1K 16K
CY8C24x23
CY8C24x23A up to 241 4 12 2 2 6 256
CY8C21x34 up to 281428024
CY8C21x23
CY8C20x34
a. Limited analog functionality.
b. Two analog blocks and one CapSense.
Digital IODigital
up to 442 8 12 4 4 12 256
up to 241 4 12 2 2 6 256
16 1 4 8 0 2 4a256
up to 280 0 28 0 0 3
Rows
Digital
Blocks
Analog
Inputs
Analog
Analog
Outputs
Analog
Columns
a
b
Blocks
Bytes
Bytes
Bytes
512
Bytes
Bytes
512
Bytes
Size
SRAM
16K
4K
4K
8K
4K
8K
Flash
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.
Size
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.
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Development Tools
Commands
Results
PSoC
Designer
Core
Engine
PSoC
Configuration
Sheet
Manufacturing
Information
File
Device
Database
Importable
Design
Database
Device
Programmer
Graphical Designer
Interface
Context
Sensitive
Help
Emulation
Pod
In-Circuit
Emulator
Project
Database
Application
Database
User
Modules
Library
PSoC
Designer
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 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 the easy development of multiple
configurations and dynamic reconfiguration. Dynamic
configuration allows 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
preconfigured 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
In the Application Editor you can edit C language and Assembly
language source code. You can also assemble, compile, link,
and build.
Assembler. The macro assembler allows the seamless merging
of the assembly code with C code. The link libraries automatically
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 PSoC family devices. Even if you have never worked in
the C language before, the product helps you to quickly create
complete C programs for the PSoC family devices.
The embedded, optimizing C compiler provides all th e 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.
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Debugger
Debugger
Interface
to ICE
Application Editor
Device Editor
Project
Manager
Source
Code
Editor
Storage
Inspector
User
Module
Selection
Placement
and
Parameter-
ization
Generate
Application
Build
All
Event &
Breakpoint
Manager
Build
Manager
Source
Code
Generator
The PSoC Designer Debugger subsystem provides hardware
in-circuit emulation, allowing the designer to test the program in
a physical system while providing an internal view of the PSoC
device. Debugger commands allow the designer to read and
program and read and write data memory, read and write IO
registers, read and write CPU registers, set and clear
breakpoints, and provide program run, halt, and step control. The
debugger also allows the designer to create a trace buffer of
registers and memory locations of interest.
Online Help System
The online help system displays online, context-sensitive help
for the user. Designed for procedural and quick reference, each
functional subsystem has its own context-sensitive help. This
system also provides tutorials and links to FAQs and an Online
Support Forum to aid the designer in getting started.
Hardware Tools
In-Circuit Emulator
A low cost, high functionality ICE (In-Circuit Emulator) is
available for development support. This hardware has the
capability to program single devices.
The emulator consists of a base unit that connects to the PC
through the parallel or USB port. The base unit is universal and
operates with all PSoC devices. Emulation pods for each device
family are available separately. The emulation pod takes the
place of the PSoC device in the target board and performs full
speed (24 MHz) operation.
establish the pulse width and duty cycle. User modules also
provide tested software to cut your development time. The user
module application programming interface (API) provides
high-level functions to control and respond to hardware events
at run-time. The API also provides optional interrupt service
routines that you can adapt as needed.
The API functions are documented in user module data sheets
that are viewed directly in the PSoC Designer IDE. These data
sheets explain the internal operation of the user module and
provide performance specifications. Each data sheet describes
the use of each user module parameter and documents the
setting of each register controlled by the user module.
The development process starts when you open a new project
and bring up the Device Editor, a graphical user interface (GUI)
for configuring the hardware. Pick the user modules you need for
your project and map them onto the PSoC blocks with
point-and-click simplicity. Next, build signal chains by
interconnecting user modules to each other and the IO pins. At
this stage, you can also configure the clock source connections
and enter parameter values directly or by selecting values from
drop-down menus. When you are ready to test the hardware
configuration or move on to developing code for the project,
perform the “Generate Application” step. This causes PSoC
Designer to generate source code that automatically configures
the device to your specification and provides high-level user
module API functions.
Figure 4. User Module and Source Code Development Flow s
Designing with User Modules
The development process for the PSoC device differs from that
of a traditional fixed function microprocessor. The configurable
analog and digital hardware blocks give the PSoC architecture a
unique flexibility that pays dividends in managing specification
change during development and by lowering inventory costs.
These configurable resources, called PSoC Blocks, can
implement a wide variety of user-selectable functions. Each
block has several registers that determine its function and
connectivity to other blocks, multiplexers, buses and to the IO
pins. Iterative development cycles permit you to adapt the
hardware and the software. This substantially lowers the risk of
having to select a different part to meet the final design
requirements.
To speed the development process, the PSoC Designer
Integrated Development Environment (IDE) provides a library of
pre-built, pre-tested hardware peripheral functions, called “User
Modules.” User modules make selecting and implementing
peripheral devices simple, and come in analog, digital, and
mixed signal varieties. The standard User Module library
contains over 50 common peripherals such as ADCs, DACs
Timers, Counters, UARTs, and other uncommon peripherals,
such as DTMF Generators and Bi-Quad analog filter sections.
Each user module establishes the basic register settings that
implement the selected function. It also provides parameters that
allow you to tailor its precise configuration to your particular
application. For example, a Pulse Width Modulator User Module
configures one or more digital PSoC blocks, one for each 8 bits
of resolution. The user module parameters permit you to
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The next step is to write your main program, and any sub-routine
using PSoC Designer’s Application Editor subsystem. The
Application Editor includes a Project Manager that allows you to
open the project source code files (including all generated code
files) from a hierarchal view. The source code editor provides
syntax coloring and advanced edit features for both C and
assembly language. File search capabilities include simple string
searches and recursive “grep-style” patterns. A single mouse
click invokes the Build Manager. It employs a
professional-strength “makefile” system to automatically analyze
all file dependencies and run the compiler and assembler as
necessary. Project-level options control optimization strategies
used by the compiler and linker. Syntax errors are displayed in a
console window. Double clicking the error message takes you
directly to the offending line of source code. When all is correct,
the linker builds a HEX file image suitable for programming.
The last step in the development process takes place inside the
PSoC Designer’s Debugger subsystem. The Debugger
downloads the HEX image to the In-Circuit Emulator (ICE) where
it runs at full speed. Debugger capabilities rival those of systems
costing many times more. In addition to traditional single-step,
run-to-breakpoint and watch-variable features, the Debugger
provides a large trace buffer and allows you define complex
breakpoint events that include monitoring address and data bus
values, memory locations and external signals.
Document Conventions
Acronyms Used
The following table lists the acronyms that are used in this
document.
Table 2. Acronyms Used
Acronym Description
AC alternating current
ADC analog-to-digital converter
API application programming interface
CPU central processing unit
CT continuous time
DAC digital-to-analog converter
DC direct current
ECO external crystal oscillator
EEPROM electrically erasable programmable read-only
memory
FSR full scale range
GPIO general purpose IO
GUI graphical user interface
HBM human body model
ICE in-circuit emulator
ILO internal low speed oscillator
IMO internal main oscillator
IO input/output
IPOR imprecise power on reset
Table 2. Acronyms Used (continued)
Acronym Description
LSb least-significant bit
LVD low voltage detect
MSb most-significant bit
PC program counter
PLL phase-locked loop
POR power on reset
PPOR precision power on reset
PSoC® Programmable System-on-Chip™
PWM pulse width modulator
SC switched capacitor
SLIMO slow IMO
SMP switch mode pump
SRAM static random access memory
Units of Measure
A unit of measure table is located in the section
Electrical Specifications on page 18. Table 8 on page 14 lists all
the abbreviations used to measure the PSoC devices.
Numeric Naming
Hexadecimal numbers are represented with all letters in
uppercase with an appended lowercase ‘h’ (for example, ‘14h’ or
‘3Ah’). Hexadecimal numbers may also be represented by a ‘0x’
prefix, the C coding convention. Binary numbers have an
appended lowercase ‘b’ (for example, 01010100b’ or
‘01000011b’). Numbers not indicated by an ‘h’ or ‘b’ are decimal.
Document Number: 38-12028 Rev. *I Page 7 of 56
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Pinouts
PDIP
SOIC
1
2
3
4
8
7
6
5
Vdd
P0[4], A, I
P0[2], A, I
P1[0], XTALout, I2C SDA
A, IO, P0[5]
A, IO, P0[3]
I2C SCL, XTALin, P1[1]
Vss
This section describes, lists, and illustrates the CY8C24x23A PSoC device pins and pinout configurations. Every port pin (labeled
with a “P”) is capable of Digital IO. However, Vss, Vdd, SMP, and XRES are not capable of Digital IO.
8-Pin Part Pinoutt
Table 3. Pin Definitions - 8-Pin PDIP and SOIC
Pin
No.
Type
Digital Analog
Pin
Name
Description
1 IO IO P0[5] Analog Column Mux Input and
Column Output
2 IO IO P0[3] Analog Column Mux Input and
Column Output
3 IO P1[1] Crystal Input (XTALin), I2C Serial
Clock (SCL), ISSP-SCLK*
4 Power Vss Ground Connection
5 IO P1[0] Crystal Output (XTALout), I2C Serial
Data (SDA), ISSP-SDAT A*
6 IO I P0[2] Analog Column Mux Input
7 IO I P0[4] Analog Column Mux Input
8 Power Vdd Supply Voltage
LEGEND: A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Programmable Sytem-on-Chip Technical Reference Manual for details.
Figure 5. CY8C24123A 8-Pin PSoC Device
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20-Pin Part Pinout
A, I, P 0[7]
A, IO, P 0[5]
A, IO, P 0[3]
A, I, P 0[1]
SMP
I2C SCL, P1[7]
I2C SDA, P1[5]
P1[3]
I2C SCL, XTALin, P1[1]
Vss
PDIP
SSOP
SOIC
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
Vdd
P0[6], A, I
P0[4], A, I
P0[2], A, I
P0[0], A, I
XRES
P1[6]
P1[4], EXTCLK
P1[2]
P1[0], XTALout, I2C SDA
Table 4. Pin Definitions - 20-Pin PDIP, SSOP, and SOIC
Pin
No.
1 IO I P0[7] Analog Column Mux Input
2 IO IO P0[5] Analog Column Mux Input and Column
3 IO IO P0[3] Analog Column Mux Input and Column
4 IO I P0[1] Analog Column Mux Input
5 Power SMP Switch Mode Pump (SMP) Connection to
6 IO P1[7] I2C Serial Clo ck (SCL)
7 IO P1[5] I2C Serial Data (SDA)
8 IO P1[3]
9 IO P1[1] Crystal Input (XTALin), I2C Serial Clock
10 Power Vss Ground Connection.
11 IO P1[0] Crystal Output (XTALout), I2C Serial Data
12 IO P1[2]
13 IO P1[4] Optional External Clock Input (EXTCLK)
14 IO P1[6]
15 Input XRES Active High External Reset with Internal
16 IO I P0[0] Analog Column Mux Input
17 IO I P0[2] Analog Column Mux Input
18 IO I P0[4] Analog Column Mux Input
19 IO I P0[6] Analog Column Mux Input
20 Power Vdd Supply Voltage
Type
Digital Analog
Pin
Name
Description
Output
Output
External Components required
(SCL), ISSP-SCLK*
(SDA), ISSP-SDATA*
Pull Down
Figure 6. CY8C24223A 20-Pin PSoC Device
LEGEND: A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Programmable Sytem-on-Chip Technical Reference Manual for details.
Document Number: 38-12028 Rev. *I Page 9 of 56
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CY8C24123A
CY8C24223A, CY8C24423A
28-Pin Part Pinout
A, I, P0[7]
A, IO, P 0[5]
A, IO, P 0[3]
A, I, P 0[1]
P2[7]
P2[5]
A, I, P 2[3]
A, I, P2[1]
SMP
I2C SCL, P1[7]
I2C SDA, P1[5]
P1[3]
I2C SCL, XTALin, P1[1]
Vss
Vdd
P0[6], A, I
P0[4], A, I
P0[2], A, I
P0[0], A, I
P2[6], Ex ternal VRef
P2[4], Ex ternal AGND
P2[2], A, I
P2[0], A, I
XRES
P1[6]
P1[4], EXTCLK
P1[2]
P1[0], XTALout, I2C SDA
PDIP
SSOP
SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Table 5. Pin Definitions - 28-Pin PDIP, SSOP, and SOIC
Pin
No.
1 IO I P0[7] Analog Column Mux Input
2 IO IO P0[5] Analog Column Mux Input and column
3 IO IO P0[3] Analog Column Mux Input and Column
4 IO I P0[1] Analog Column Mux Input
5 IO P2[7]
6 IO P2[5]
7 IO I P2[3] Direct Switched Capacitor Block Input
8 IO I P2[1] Direct Switched Capacitor Block Input
9 Power SMP Switch Mode Pump (SMP) Connection to
10 IO P1[7] I2C Serial Clock (SCL)
11 IO P1[5] I2C Serial Data (SDA)
12 IO P1[3]
13 IO P1[1] Crystal Input (XTALin), I2C Serial Clock
14 Power Vss Ground connection.
15 IO P1[0] Crystal Output (XTALout), I2C Serial Data
16 IO P1[2]
17 IO P1[4] Optional External Clock Input (EXTCLK)
18 IO P1[6]
19 Input XRES Active High External Reset with Internal
20 IO I P2[0] Direct Switched Capacitor Block Input
21 IO I P2[2] Direct Switched Capacitor Block Input
22 IO P2[4] External Analog Ground (AGND)
23 IO P2[6] External Voltage Reference (VRef)
24 IO I P0[0] Analog Column Mux Input
25 IO I P0[2] Analog Column Mux Input
26 IO I P0[4] Analog Column Mux Input
27 IO I P0[6] Analog Column Mux Input
28 Power Vdd Supply Voltage
Type
Digital Analog
Pin
Name
Description
output
Output
External Components required
(SCL), ISSP-SCLK*
(SDA), ISSP-SDATA*
Pull Down
Figure 7. CY8C24423A 28-Pin PSoC Device
LEGEND: A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Programmable Sytem-on-Chip Technical Reference Manual for details.
Document Number: 38-12028 Rev. *I Page 10 of 56
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CY8C24123A
CY8C24223A, CY8C24423A
32-Pin Part Pinout
P2[7]
P2[5]
A, I, P2[3]
A, I, P2[1]
Vss
SMP
QFN
(Top View )
9
101112
131415
16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
32313029282726
25
P0[1], A, I
P0[3], A, IO
P0[5], A, IO
P0[7], A, I
Vdd
P0[6], A, I
P0[4], A, I
NC
I2C SCL, P1[7]
I2C SDA, P1[5]
P0[2], A, I
P0[0], A, I
XRES
P1[6]
NC
P1[3]
I2C SCL, XTALin, P1[1]
Vss
I2C SDA, XTALout, P1[0]
P1[2]
EXTCLK, P1[4]
NC
P2[6], External VRef
P2[4], External AGND
P2[2], A, I
P2[0], A, I
P2[7]
P2[5]
A, I, P2[3]
A, I, P2[1]
Vss
SMP
QFN
(Top View)
9
101112
131415
16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
32313029282726
25
P0[1], A, I
P0[3], A, IO
P0[7], A, I
Vdd
P0[6], A, I
P0[4], A, I
NC
12 CS CL, P1[7]
12 CS DA, P1[5]
P0[2], A, I
P0[0], A, I
XRES
P1[6]
NC
P1[3]
12 CS CL, XTALin, P1[1]
Vss
12 CS DA, XTALout, P1[0]
P1[2]
EXTCLK, P1[4]
NC
P2[6], ExternalVRef
P2[4], ExternalA GND
P2[2], A, I
P2[0], A, I
P0[5], A, IO
Figure 9. CY8C24423A 32-Pin Sawn PSoC Device
Table 6. Pin Definitions - 32-Pin QFN**
Pin
No.
1 IO P2[7]
2 IO P2[5]
3 IO I P2[3] Direct Switched Capacitor Block Input
4 IO I P2[1] Direct Switched Capacitor Block Input
5 Power Vss Ground Connection
6 Power SMP Switch Mode Pump (SMP) Connection
7 IO P1[7] I2C Serial Clock (SCL).
8 IO P1[5] I2C Serial Data (SDA).
9 NC No Connection
10 IO P1[3]
11 IO P1[1] Crystal Input (XTALin), I2C Serial Clock
12 Power Vss Ground Connection
13 IO P1[0] Crystal Output (XTALout), I2C Serial
14 IO P1[2]
15 IO P1[4] Optional External Clock Input
16 NC No Connection
17 IO P1[6]
18 Input XRES Active High External Reset with Internal
19 IO I P2[0] Direct Switched Capacitor Block Input
20 IO I P2[2] Direct Switched Capacitor Block Input
21 IO P2[4] External Analog Ground (AGND)
22 IO P2[6] External Voltage Reference (VRef)
23 IO I P0[0] Analog Column Mux Input
24 IO I P0[2] Analog Column Mux Input
25 NC No Connection
26 IO I P0[4] Analog Column Mux Input
27 IO I P0[6] Analog Column Mux Input
28 Power Vdd Supply Voltage
29 IO I P0[7] Analog Column Mux Input
30 IO IO P0[5] Analog Column Mux Input and Column
31 IO IO P0[3] Analog Column Mux Input and Column
32 IO I P0[1] Analog Column Mux Input
LEGEND: A = Analog, I = Input, and O = Output.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Programmable Sytem-on-Chip Technical Reference Manual for details.
** The center pad on the QFN package must be connected to ground (Vss) for best mechanical, the rmal, and electrical perfo rmance. If not connected to gr ound, it must
be electrically floated and not connected to any other signal.
Document Number: 38-12028 Rev. *I Page 11 of 56
Type
Digital Analog
Pin
Name
to External Components required
(SCL), ISSP-SCLK*
Data (SDA), ISSP-SDAT A*
(EXTCLK)
Pull Down
Output
Output
Description
Figure 8. CY8C24423A 32-Pin PSoC Device
[+] Feedback
CY8C24123A
CY8C24223A, CY8C24423A
56-Pin Part Pinout
SSOP
1
56
255
354
453
5
52
6
51
750
849
948
10
47
11 46
12 45
13
44
14 43
15
42
16
41
17
40
18 39
19 38
20
37
21 36
22
35
23 34
24 33
25 32
26 31
27
30
28
29
Vdd
P0[6], AI
P0[4], AIO
P0[2], AIO
P0[0], AI
P2[6], External VRef
P2[4], External AGND
P2[2], AI
P2[0], AI
P4[6]
P4[4]
P4[2]
P4[0]
CCLK
HCLK
XRES
P3[6]
P3[4]
P3[2]
P3[0]
P5[2]
P5[0]
P1[6]
P1[4], EXTCLK
P1[2]
P1[0], XTALOut, I2C SDA, SDAT A
NC
NC
AI, P0[7]
AIO, P0[5]
AIO, P0[3]
AI, P0[1]
P2[7]
P2[5]
AI, P2[3]
AI, P2[1]
P4[7]
P4[5]
P4[3]
P4[1]
OCDE
OCDO
SMP
P3[7]
P3[5]
P3[3]
P3[1]
P5[3]
P5[1]
I2C SCL, P1[7]
I2C SDA, P1[5]
NC
P1[3]
SCLK, I2C SCL, XTALIn, P1[1]
Vss
NC
Not for Production
The 56-pin SSOP part is for the CY8C24000A On-Chip Debug (OCD) PSoC device.
Note This part is only used for in-circuit debugging. It is NOT available for production.
Table 7. Pin Definitions - 56-Pin SSOP
Pin
No.
1 NC No Connection Figure 10. CY8C24000A 56-Pin PSoC Device
2 IO I P0[7] Analog Column Mux Input
3 IO I P0[5] Analog Column Mux Input and
4 IO I P0[3] Analog Column Mux Input and
5 IO I P0[1] Analog Column Mux Input
6 IO P2[7]
7 IO P2[5]
8 IO I P2[3] Direct Switched Capacitor Block
9 IO I P2[1] Dire ct sWitched Capacitor Block
10 IO P4[7]
11 IO P4[5]
12 IO I P4[3]
13 IO I P4[1]
14 OCD OCDEOCD Even Data IO.
Type
Digital Analog
Pin
Name
Description
Column Output
Column Output
Input
Input
15 OCD OCDOOCD Odd Data Output
16 Power SMP Switch Mode Pump (SMP)
Connection to required External
Components
17 IO P3[7]
18 IO P3[5]
19 IO P3[3]
20 IO P3[1]
21 IO P5[3]
22 IO P5[1]
23 IO P1[7] I2C Serial Clock (SCL)
24 IO P1[5] I2C Serial Data (SDA)
25 NC No Connection
26 IO P1[3]
27 IO P1[1] Crystal Input (XTALin), I2C Serial
28 Power Vdd Supply Voltage
29 NC No Connection
30 NC No Connection
31 IO P1[0] Crystal Output (XTALout), I2C
32 IO P1[2]
33 IO P1[4] Optional External Clock Input
Document Number: 38-12028 Rev. *I Page 12 of 56
Clock (SCL), ISSP-SCLK*
Serial Data (SDA), ISSP-SDAT A*
(EXTCLK)
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CY8C24123A
CY8C24223A, CY8C24423A
Table 7. Pin Definitions - 56-Pin SSOP (continued)
Pin
No.
34 IO P1[6]
35 IO P5[0]
36 IO P5[2]
37 IO P3[0]
38 IO P3[2]
39 IO P3[4]
40 IO P3[6]
41 Input XRES Active high external reset with
42 OCD HCLK OCD high-speed clock output.
43 OCD CCLK OCD CPU clock output.
44 IO P4[0]
45 IO P4[2]
46 IO P4[4]
47 IO P4[6]
48 IO I P2[0] Direct switched capacitor block
49 IO I P2[2] Direct switched capacitor block
50 IO P2[4] External Analog Ground (AGND).
51 IO P2[6] E xternal Voltage Reference
52 IO I P0[0] Analog column mux input.
53 IO I P0[2] Analog column mux input and
54 IO I P0[4] Analog column mux input and
55 IO I P0[6] Analog column mux input.
56 Power Vdd Supply voltage.
Type
Digital Analog
Pin
Name
Description
internal pull down.
input.
input.
(VRef).
column output.
column output.
LEGEND: A = Analog, I = Input, O = Output, and OCD = On-Chip Debug.
* These are the ISSP pins, which are not High Z at POR (Power On Reset). See the PSoC Programmable Sytem-on-Chip Technical Reference Manual for details.
Document Number: 38-12028 Rev. *I Page 13 of 56
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CY8C24123A
CY8C24223A, CY8C24423A
Register Reference
This section lists the registers of the CY8C24x23A PSoC device.
For detailed register information, refer the PSoC Programmable
Sytem-on-Chip Reference Manual.
Register Conventions
Abbreviations Used
The register conventions specific to this section are listed in the
following table.
Table 8. Abbreviations
Convention Description
R Read register or bit(s)
W Write register or bit(s)
L Logical register or bit(s)
C Clearable register or bit(s)
# Access is bit specific
Register Mapping Tables
The PSoC device has a total register address space of 512
bytes. The register space is referred to as IO space and is
divided into two banks. The XOI bit in the Flag register (CPU_F)
determines which bank the user is currently in. When the XOI bit
is set the user is in Bank 1.
Note In the following register mapping tables, blank fields are
reserved and must not be accessed.
Document Number: 38-12028 Rev. *I Page 14 of 56
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CY8C24123A
CY8C24223A, CY8C24423A
Table 9. Register Map Bank 0 Table: User Space
Name
PRT0DR 00 RW 40 ASC10CR0 80 RW C0
PRT0IE 01 RW 41 ASC10CR1 81 RW C1
PRT0GS 02 RW 42 ASC10CR2 82 RW C2
PRT0DM2 03 RW 43 ASC10CR3 83 RW C3
PRT1DR 04 RW 44 ASD11CR0 84 RW C4
PRT1IE 05 RW 45 ASD11CR1 85 RW C5
PRT1GS 06 RW 46 ASD11CR2 86 RW C6
PRT1DM2 07 RW 47 ASD11CR3 87 RW C7
PRT2DR 08 RW 48 88 C8
PRT2IE 09 RW 49 89 C9
PRT2GS 0A RW 4A 8A CA
PRT2DM2 0B RW 4B 8B CB
DBB00DR0 20 # AMX_IN 60 RW A0 INT_MSK0 E0 RW
DBB00DR1 21 W 61 A1 INT_MSK1 E1 RW
DBB00DR2 22 RW 62 A2 INT_VC E2 RC
DBB00CR0 23 # ARF_CR 63 RW A3 RES_WDT E3 W
DBB01DR0 24 # CMP_CR0 64 # A4 DEC_DH E4 RC
DBB01DR1 25 W ASY_CR 65 # A5 DEC_DL E5 RC
DBB01DR2 26 RW CMP_CR1 66 RW A6 DEC_CR0 E6 RW
DBB01CR0 27 # 67 A7 DEC_CR1 E7 RW
DCB02DR0 28 # 68 A8 MUL_X E8 W
DCB02DR1 29 W 69 A9 MUL_Y E9 W
DCB02DR2 2A RW 6A AA MUL_DH EA R
DCB02CR0 2B # 6B AB MUL_DL EB R
DCB03DR0 2C # 6C AC ACC_DR1 EC RW
DCB03DR1 2D W 6D AD ACC_DR0 ED RW
DCB03DR2 2E RW 6E AE ACC_DR3 EE RW
DCB03CR0 2F # 6F AF ACC_DR2 EF RW
Blank fields are Reserved and must not be accessed. # Access is bit specific.
Addr
(0,Hex)
0C 4C 8C CC
0D 4D 8D CD
0E 4E 8E CE
0F 4F 8F CF
10 50 ASD20CR0 90 RW D0
11 51 ASD20CR1 91 RW D1
12 52 ASD20CR2 92 RW D2
13 53 ASD20CR3 93 RW D3
14 54 ASC21CR0 94 RW D4
15 55 ASC21CR1 95 RW D5
16 56 ASC21CR2 96 RW I2C_CFG D6 RW
17 57 ASC21CR3 97 RW I2C_SCR D7 #
18 58 98 I2C_DR D8 RW
19 59 99 I2C_MSCR D9 #
1A 5A 9A INT_CLR0 DA RW
1B 5B 9B INT_CLR1 DB RW
1C 5C 9C DC
1D 5D 9D INT_CLR3 DD RW
1E 5E 9E INT_MSK3 DE RW
1F 5F 9F DF
30 ACB00CR3 70 RW RDI0RI B0 RW F0
31 ACB00CR0 71 RW RDI0SYN B1 RW F1
32 ACB00CR1 72 RW RDI0IS B2 RW F2
33 ACB00CR2 73 RW RDI0LT0 B3 RW F3
34 ACB01CR3 74 RW RDI0LT1 B4 RW F4
35 ACB01CR0 75 RW RDI0RO0 B5 RW F5
36 ACB01CR1 76 RW RDI0RO1 B6 RW F6
37 ACB01CR2 77 RW B7 CPU_F F7 RL
38 78 B8 F8
39 79 B9 F9
3A 7A BA FA
3B 7B BB FB
3C 7C BC FC
3D 7D BD FD
Access Name
Addr
(0,Hex)
Access Name
Addr
(0,Hex)
Access Name
Addr
(0,Hex)
Access
Document Number: 38-12028 Rev. *I Page 15 of 56
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CY8C24223A, CY8C24423A
Table 9. Register Map Bank 0 Table: User Space (continued)
Name
Blank fields are Reserved and must not be accessed. # Access is bit specific.
Addr
(0,Hex)
3E 7E BE CPU_SCR1 FE #
3F 7F BF CPU_SCR0 FF #
Access Name
Addr
(0,Hex)
Access Name
Addr
(0,Hex)
Access Name
Addr
(0,Hex)
Table 10. Register Map Bank 1 Table: Configuration Space
Name
PRT0DM0 00 RW 40 ASC10CR0 80 RW C0
PRT0DM1 01 RW 41 ASC10CR1 81 RW C1
PRT0IC0 02 RW 42 ASC10CR2 82 RW C2
PRT0IC1 03 RW 43 ASC10CR3 83 RW C3
PRT1DM0 04 RW 44 ASD11CR0 84 RW C4
PRT1DM1 05 RW 45 ASD11CR1 85 RW C5
PRT1IC0 06 RW 46 ASD11CR2 86 RW C6
PRT1IC1 07 RW 47 ASD11CR3 87 RW C7
PRT2DM0 08 RW 48 88 C8
PRT2DM1 09 RW 49 89 C9
PRT2IC0 0A RW 4A 8A CA
PRT2IC1 0B RW 4B 8B CB
DBB00FN 20 RW CLK_CR0 60 RW A0 OSC_CR0 E0 RW
DBB00IN 21 RW CLK_CR1 61 RW A1 OSC_CR1 E1 RW
DBB00OU 22 RW ABF_CR0 62 RW A2 OSC_CR2 E2 RW
DBB01FN 24 RW 64 A4 VLT_CMP E4 R
DBB01IN 25 RW 65 A5 E5
DBB01OU 26 RW AMD_CR1 66 RW A6 E6
DCB02FN 28 RW 68 A8 IMO_TR E8 W
DCB02IN 29 RW 69 A9 ILO_TR E9 W
DCB02OU 2A RW 6A AA BDG_TR EA RW
DCB03FN 2C RW 6C AC EC
DCB03IN 2D RW 6D AD ED
DCB03OU 2E RW 6E AE EE
Blank fields are Reserved and must not be accessed. # Access is bit specific.
Addr
(1,Hex)
0C 4C 8C CC
0D 4D 8D CD
0E 4E 8E CE
0F 4F 8F CF
10 50 ASD20CR0 90 RW GDI_O_IN D0 RW
11 51 ASD20CR1 91 RW GDI_E_IN D1 RW
12 52 ASD20CR2 92 RW GDI_O_OU D2 RW
13 53 ASD20CR3 93 RW GDI_E_OU D3 RW
14 54 ASC21CR0 94 RW D4
15 55 ASC21CR1 95 RW D5
16 56 ASC21CR2 96 RW D6
17 57 ASC21CR3 97 RW D7
18 58 98 D8
19 59 99 D9
1A 5A 9A DA
1B 5B 9B DB
1C 5C 9C DC
1D 5D 9D OSC_GO_EN DD RW
1E 5E 9E OSC_CR4 DE RW
1F 5F 9F OSC_CR3 DF RW
23 AMD_CR0 63 RW A3 VLT_CR E3 RW
27 ALT_CR0 67 RW A7 E7
2B 6B AB ECO_TR EB W
2F 6F AF EF
30 ACB00CR3 70 RW RDI0RI B0 RW F0
31 ACB00CR0 71 RW RDI0SYN B1 RW F1
32 ACB00CR1 72 RW RDI0IS B2 RW F2
33 ACB00CR2 73 RW RDI0LT0 B3 RW F3
34 ACB01CR3 74 RW RDI0LT1 B4 RW F4
35 ACB01CR0 75 RW RDI0RO0 B5 RW F5
36 ACB01CR1 76 RW RDI0RO1 B6 RW F6
Access Name
Addr
(1,Hex)
Access Name
Addr
(1,Hex)
Access Name
Addr
(1,Hex)
Access
Access
Document Number: 38-12028 Rev. *I Page 16 of 56
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CY8C24123A
CY8C24223A, CY8C24423A
Table 10. Register Map Bank 1 Table: Configuration Space (continued)
Name
Blank fields are Reserved and must not be accessed. # Access is bit specific.
Addr
(1,Hex)
37 ACB01CR2 77 RW B7 CPU_F F7 RL
38 78 B8 F8
39 79 B9 F9
3A 7A BA FA
3B 7B BB FB
3C 7C BC FC
3D 7D BD FD
3E 7E BE CPU_SCR1 FE #
3F 7F BF CPU_SCR0 FF #
Access Name
Addr
(1,Hex)
Access Name
Addr
(1,Hex)
Access Name
Addr
(1,Hex)
Access
Document Number: 38-12028 Rev. *I Page 17 of 56
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