Cypress CY8C21434 Set up Time for a Repeated Start Condition, Set up Time for Stop Condition

Page 33

CY8C21634, CY8C21534

CY8C21434, CY8C21334, CY8C21234

Table 39. 2.7V AC Characteristics of the I2C SDA and SCL Pins (Fast Mode not Supported)

Symbol

Description

Standard Mode

Fast Mode

Units

Min

Max

Min

Max

 

 

 

FSCLI2C

SCL Clock Frequency

0

100

–

–

kHz

THDSTAI2C

Hold Time (repeated) START Condition.

4.0

–

–

–

μs

 

After this period, the first clock pulse is

 

 

 

 

 

 

generated.

 

 

 

 

 

TLOWI2C

LOW Period of the SCL Clock

4.7

–

–

–

μs

THIGHI2C

HIGH Period of the SCL Clock

4.0

–

–

–

μs

TSUSTAI2C

Set up Time for a Repeated START

4.7

–

–

–

μs

 

Condition

 

 

 

 

 

THDDATI2C

Data Hold Time

0

–

–

–

μs

TSUDATI2C

Data Set-up Time

250

–

–

–

ns

TSUSTOI2C

Set up Time for STOP Condition

4.0

–

–

–

μs

TBUFI2C

Bus Free Time Between a STOP and START

4.7

–

–

–

μs

 

Condition

 

 

 

 

 

TSPI2C

Pulse Width of spikes are suppressed by the

–

–

–

–

ns

 

input filter.

 

 

 

 

 

 

Figure 19. Definition for Timing for Fast/Standard Mode on the I2C Bus

 

 

SDA

TLOWI2C

 

 

 

 

 

TSUDATI2C

 

 

 

 

 

SCL

 

 

 

 

S

T

THDDATI2C

T

TSUSTAI2C

 

HDSTAI2C

 

HIGHI2C

 

THDSTAI2C

Sr

TSPI2C

TSUSTOI2C

TBUFI2C

P

S

Document Number: 38-12025 Rev. *O

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Contents Logic Block Diagram FeaturesCypress Semiconductor Corporation 198 Champion Court San Jose, CA Document Number 38-12025 Rev. *OPSoC Functional Overview PSoC CoreDigital System Additional System Resources Analog SystemArray Analog Multiplexer SystemPSoC Device Characteristics PSoC Part PSoC Device CharacteristicsGetting Started NumberDevelopment Tools PSoC Designer Software SubsystemsIn-Circuit Emulator Designing with PSoC Designer Configure ComponentsSelect Components Organize and ConnectAcronyms Used Document ConventionsUnits of Measure Numeric NamingPin Part Pinout Pin InformationXres Active high external reset with internal pull downCY8C21534 28-Pin PSoC Device QFN CY8C21634 part OCD even data IO OCD OcdeOCD Ocdo OCD odd data outputPin No Type Pin Name Description Digital Analog Pin Definitions CY8C21001 56-Pin SsopOCD Hclk OCD CclkRegister Conventions Register ReferenceRegister Mapping Tables Register Conventions DescriptionName Addr 1,Hex Access Register Map 1 Table Configuration SpaceCY8C21634, CY8C21534 CY8C21434, CY8C21334, CY8C21234 Units of Measure Symbol Unit of Measure Electrical SpecificationsDC Electrical Characteristics Operating TemperatureAbsolute Maximum Ratings Symbol Description Min Typ Units Symbol Description Min Typ Max UnitsDC Chip-Level Specifications Symbol Description Min Typ DC General Purpose IO SpecificationsAgnd DC Operational Amplifier Specifications DC Switch Mode Pump Specifications DC Low Power Comparator SpecificationsPSoC DC POR and LVD Specifications DC Analog Mux Bus SpecificationsDC Programming Specifications AC Electrical Characteristics AC Chip-Level SpecificationsDC24M Internal Main Oscillator Frequency for 12 MHz CPU Frequency 2.7V NominalDigital PSoC Block Frequency 2.7V Nominal AC General Purpose IO Specifications AC Operational Amplifier SpecificationsAC Low Power Comparator Specifications AC Analog Mux Bus Specifications Switch Rate MHzAC Digital Block Specifications AC External Clock Specifications AC Programming Specifications AC I2C Specifications Set up Time for Stop Condition Set up Time for a Repeated Start ConditionPackaging Information Packaging DimensionsPin 5x5 mm 0.93 MAX QFN Pin 5x5 mm 0.60 MAX QFN Pin Sawn QFN Package Thermal Impedances per Package Typical θ JA Typical θ JC Thermal ImpedancesSoic Ssop32 QFN Solder Reflow Peak TemperatureDevelopment Tool Selection SoftwareEvaluation Tools Accessories Emulation and Programming Device ProgrammersThird-Party Tools Build a PSoC Emulator into Your Board Package Ordering InformationOrdering Code Definitions CY 8 C 21Document History Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB

CY8C21634, CY8C21534, CY8C21434, CY8C21334, CY8C21234 specifications

The Cypress CY8C21234, CY8C21334, CY8C21434, CY8C21534, and CY8C21634 are members of the PSoC® 1 family of microcontrollers, designed for embedded applications that demand flexibility, integration, and efficiency. These microcontrollers are well-suited for a variety of projects due to their unique characteristics and advanced technologies.

One of the primary features of the PSoC 1 series is the integration of analog and digital components on a single chip. This combination allows for the implementation of complex control algorithms without the need for multiple external components. Each device in this family is equipped with programmable analog blocks capable of interfacing with sensors, as well as digital blocks that facilitate communication with various peripherals.

The CY8C21234 series provides a 16-bit architecture, which enhances performance for processing and control tasks. The microcontrollers boast an operational range of up to 24 MHz, making them suitable for high-speed applications. With up to 16 KB of flash memory, these devices have ample memory for storing program code and user data.

Another key characteristic of the CY8C21234, CY8C21334, CY8C21434, CY8C21534, and CY8C21634 devices is their ease of use. They come with a comprehensive development environment known as PSoC Designer. This software provides a user-friendly interface to configure the device’s hardware resources graphically and allows for seamless integration of custom firmware.

In terms of communication capabilities, these microcontrollers support multiple protocols, including I²C, SPI, and UART, providing versatile interfacing options with other devices. This makes them ideal for applications such as sensor processing, motor control, and portable devices.

Power management is another significant highlight of the PSoC 1 family. The microcontrollers are designed with low-power operation in mind, featuring multiple sleep modes that contribute to extended battery life in portable applications.

Overall, the Cypress CY8C21234, CY8C21334, CY8C21434, CY8C21534, and CY8C21634 microcontrollers are a versatile solution for a wide range of embedded applications, combining programmable analog and digital components, ease of development, and efficient power management in a compact form factor. Their performance and flexibility make them a popular choice among engineers and developers exploring innovative designs.
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