Cypress CY8C24994, CY8C24094, CY8C24894 manual Analog System, Analog Multiplexer System

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CY8C24094, CY8C24794 CY8C24894, CY8C24994

3.1 The Analog System

The Analog System is composed of 6 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 listed below.

Analog-to-digital converters (up to 2, with 6 to 14-bit resolution, selectable as Incremental, Delta Sigma, and SAR)

Filters (2 and 4 pole band-pass, low-pass, and notch)

Amplifiers (up to 2, with selectable gain to 48x)

Instrumentation amplifiers (1 with selectable gain to 93x)

Comparators (up to 2, with 16 selectable thresholds)

DACs (up to 2, with 6- to 9-bit resolution)

Multiplying DACs (up to 2, 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 3-2.

Figure 3-2. Analog System Block Diagram

A ll IO

 

 

 

 

(E x c e p t P o rt 7 )

 

 

 

 

P 0 [7 ]

 

 

 

P 0 [6 ]

P 0 [5 ]

 

 

 

P 0 [4 ]

P 0 [3 ]

 

 

 

P 0 [2 ]

P 0 [1 ]

 

 

 

P 0 [0 ]

 

Analog

Mux Bus

RefIn

P 2 [6 ]

P 2 [3 ]

 

AGNDIn

 

 

P 2 [4 ]

P 2 [1 ]

 

 

 

 

P 2 [2 ]

 

 

 

 

 

 

 

 

P 2 [0 ]

A C I 0 [1 :0 ]

 

A C I 1 [1 :0 ]

 

A rra y In p u t

 

 

 

 

C o n fig u ra tio n

 

 

 

 

B lo c k

A C B 0 0

 

A C B 0 1

 

A rra y

 

 

 

 

 

A S C 1 0

 

A S D 1 1

 

 

A S D 2 0

 

A S C 2 1

 

 

 

 

A n a lo g R e fe re n c e

 

In te rfa c e to

R e fH i

R e fe re n c e

A G N D In

D ig ita l S y s te m

R e fL o

G e n e ra to rs

R e fIn

 

A G N D

 

B a n d g a p

M 8 C In te rfa c e (A d d re s s B u s , D a ta B u s , E tc .)

3.0.1 The Analog Multiplexer System

The Analog Mux Bus can connect to every GPI/O pin in ports 0-5. Pins are connected to the bus individually or in any combination. The bus also connects to the analog system for analysis with comparators and analog-to-digital converters. It is split into two sections for simultaneous dual-channel processing. An additional 8:1 analog input multiplexer provides a second path to bring Port 0 pins to the analog array.

Switch control logic enables selected pins to precharge continu- ously under hardware control. This enables capacitive measurement for applications such as touch sensing. Other multiplexer applications include:

Track pad, finger sensing.

Chip-wide mux that allows analog input from up to 48 I/O pins. Crosspoint connection between any I/O pin combinations.

When designing capacitive sensing applications, refer to the latest signal-to-noise signal level requirements Application Notes, which are found under http://www.cypress.com > Design Resources > Application Notes. In general, and unless otherwise noted in the relevant Application Notes, the minimum signal-to-noise ratio (SNR) for CapSense applications is 5:1.

Document Number: 38-12018 Rev. *M

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Contents O C C O R E FeaturesLogic Block Diagram Cypress Semiconductor Corporation 198 Champion CourtPSoC Functional Overview Digital SystemPSoC Core Analog Multiplexer System Analog SystemAdditional System Resources CyPros Consultants Solutions Library Technical SupportPSoC Device Characteristics Getting StartedDevelopment Tools PSoC Designer Software SubsystemsIn-Circuit Emulator Select Components Configure ComponentsDesigning with PSoC Designer Organize and ConnectNumeric Naming Document ConventionsAcronyms Used Units of Measure56-Pin Part Pinout Pin Information56-Pin Part Pinout with Xres Pin Part Pinout QFN2Pin Type Name Pin Type Name Description Digital Analog 68-Pin Part PinoutPin Part Pinout QFN 68-Pin Part Pinout On-Chip DebugName Description Pin 100-Ball Vfbga Part PinoutBall Part Pinout Vfbga PinCY8C24094 OCD Not for Production 100-Ball Vfbga Part Pinout On-Chip DebugVss Ground connection D10 100-Pin Part Pinout On-Chip Debug Pin Part Pinout TqfpPin Digital Analog Name Description Tqfp Convention Description Register ReferenceRegister Conventions Register Mapping TablesRegister Map Bank 0 Table User Space Name Addr 0,Hex AccessRegister Map Bank 1 Table Configuration Space Access NameAccess Name Addr 1,Hex Units of Measure Symbol Unit of Measure Electrical SpecificationsAbsolute Maximum Ratings Operating TemperatureAbsolute Maximum Ratings Symbol Description Min Typ Units Operating Temperature Symbol Description Min Typ Max UnitsDC Electrical Characteristics DC Chip Level SpecificationsDC General Purpose I/O Specifications DC Operational Amplifier Specifications DC Full-Speed USB SpecificationsPsrroa DC Low Power Comparator SpecificationsDC Analog Output Buffer Specifications TcvosoPsrrob DC Analog Reference Specifications Capacitor Unit Value Switched Capacitor DC Analog PSoC Block SpecificationsVM20 = 111b DC POR and LVD SpecificationsDC Programming Specifications AC Chip-Level Specifications AC Electrical CharacteristicsAC Full-Speed USB Specifications AC General Purpose I/O SpecificationsBwoa AC Operational Amplifier SpecificationsTypical Agnd Noise with P24 Bypass AC Digital Block Specifications AC Low Power Comparator SpecificationsAC Analog Output Buffer Specifications AC External Clock SpecificationsAC Programming Specifications Definition for Timing for Fast/Standard Mode on the I2C Bus AC I2C SpecificationsPin 8x8 mm QFN Packaging DimensionsImportant Note Pin 8x8 mm x 0.89 mm QFNBall 6x6 mm Vfbga Vfbga Solder Reflow Peak TemperatureThermal Impedance Thermal Impedance for the Package Typical θJADevelopment Tool Selection SoftwareEvaluation Tools Pin Package Flex-Pod Kit18 Foot Kit19 Adapter20 Accessories Emulation and ProgrammingEmulation and Programming Accessories Device ProgrammersVFBGA21 Ordering InformationOrdering Code Definitions Document History Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB

CY8C24094, CY8C24894, CY8C24994 specifications

The Cypress CY8C24994, CY8C24894, and CY8C24094 are part of the PSoC (Cypress Semiconductor's Programmable System-on-Chip) family, designed to integrate numerous functions onto a single chip for efficient performance and flexibility in various applications.

One of the key features of these devices is their combination of analog and digital components, allowing designers to create a customized system without the need for extensive external circuitry. Each of these chips incorporates an Arm Cortex-M3 processor core, which provides a powerful 32-bit architecture, enabling efficient execution of 32-bit operations while maintaining low power consumption.

The CY8C24994 is the most advanced in this series, supporting up to 128 GPIO (General Purpose Input/Output) pins, which enhances connectivity options. It features multiple programmable analog blocks, including op-amps, comparators, and DACs (Digital-to-Analog Converters), making it suitable for a variety of sensor interfacing and signal processing applications. Additionally, it supports USB communication, providing further versatility for applications requiring data exchange with a host device.

The CY8C24894 presents a slightly more cost-effective solution with slightly fewer GPIO pins and integrated features. It maintains many of the same core attributes as its counterpart, delivering excellent analog performance and several programmable digital blocks. It is suitable for applications requiring moderate computational capabilities along with flexibility in terms of peripherals and interfaces.

The CY8C24094, while positioned as a more basic option within this lineup, still provides essential functionalities for simpler tasks. With fewer pins and capabilities, it is ideal for applications where size and cost are more critical than extensive processing power.

All three devices utilize Cypress's proprietary CapSense technology, enabling touch-sensing capabilities without the need for mechanical buttons. This feature not only enhances user interaction but also contributes to the overall design's robustness and longevity.

In summary, the CY8C24994, CY8C24894, and CY8C24094 PSoC chips offer ample design flexibility with integrated analog and digital functionality, making them an excellent choice for developers aiming to create innovative embedded solutions across a wide range of applications, from consumer electronics to industrial control systems.