AC External Clock Specifications

CY8C24123

CY8C24223, CY8C24423

The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V and -40°C ≤ TA ≤ 85°C, or 3.0V to 3.6V and -40°C ≤ TA ≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and are for design guidance only or unless otherwise specified.

Table 32. 5V AC External Clock Specifications

Symbol	Description	Min	Typ	Max	Units
FOSCEXT	Frequency	0	–	24.24	MHz
–	High Period	20.6	–	–	ns
–	Low Period	20.6	–	–	ns
–	Power Up IMO to Switch	150	–	–	μs
Table 33. 3.3V AC External Clock Specifications

Symbol	Description	Min	Typ	Max	Units
FOSCEXT	Frequency with CPU Clock divide by 1a	0	–	12.12	MHz
FOSCEXT	Frequency with CPU Clock divide by 2 or greaterb	0	–	24.24	MHz
–	High Period with CPU Clock divide by 1	41.7	–	–	ns
–	Low Period with CPU Clock divide by 1	41.7	–	–	ns
–	Power Up IMO to Switch	150	–	–	μs

a.Maximum CPU frequency is 12 MHz at 3.3V. With the CPU clock divider set to 1, the external clock must adhere to the maximum frequency and duty cycle requirements.

b.If the frequency of the external clock is greater than 12 MHz, the CPU clock divider must be set to 2 or greater. In this case, the CPU clock divider ensures that the fifty percent duty cycle requirement is met.

AC Programming Specifications

The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V and -40°C ≤ TA ≤ 85°C, or 3.0V to 3.6V and -40°C ≤ TA ≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and are for design guidance only or unless otherwise specified.

Table 34. AC Programming Specifications

Symbol	Description	Min	Typ	Max	Units
TRSCLK	Rise Time of SCLK	1	–	20	ns
TFSCLK	Fall Time of SCLK	1	–	20	ns
TSSCLK	Data Set up Time to Falling Edge of SCLK	40	–	–	ns
THSCLK	Data Hold Time from Falling Edge of SCLK	40	–	–	ns
FSCLK	Frequency of SCLK	0	–	8	MHz
TERASEB	Flash Erase Time (Block)	–	15	–	ms
TWRITE	Flash Block Write Time	–	30	–	ms
TDSCLK	Data Out Delay from Falling Edge of SCLK	–	–	45	ns

Document Number: 38-12011 Rev. *G

Page 34 of 43

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CY8C24123, CY8C24423, CY8C24223 specifications

The Cypress CY8C24223, CY8C24423, and CY8C24123 are members of the PSoC (Programmable System-on-Chip) family, which combine a microcontroller with configurable analog and digital blocks. These devices are designed for a variety of embedded applications, offering versatility and performance for developers looking to create custom solutions.

One of the standout features of the CY8C24223, CY8C24423, and CY8C24123 is their programmable analog and digital components. These include operational amplifiers, comparators, and even CapSense technology, enabling touch sensing capabilities. This flexibility allows engineers to configure the chip according to the specific needs of their application, thereby reducing the number of external components required and simplifying PCB design.

The microcontroller core in these PSoC devices is a 16-bit architecture, offering a balance between performance and power efficiency. The CY8C24223 and CY8C24423 variants include higher RAM and Flash memory options, catering to more demanding applications compared to the CY8C24123. This makes them suitable for tasks ranging from simple control operations to more complex computational processes.

A key technology utilized in these devices is the integrated programmable interconnect, which allows for easy communication between the various configurable blocks. This feature significantly speeds up the development process by enabling designers to create custom peripheral setups without the need for extensive coding.

In addition to their hardware features, Cypress provides an intuitive design environment called PSoC Creator. This IDE simplifies the process of configuring the device, allowing developers to drag and drop components into a design schematic and generate code effortlessly. PSoC Creator also includes simulation features, enabling testing and validation of designs before deployment.

The PSoC family is known for its low power consumption, which is crucial for battery-operated devices. The power management features integrated into these models allow for various operational modes, making them energy-efficient and ideal for portable applications.

In summary, the Cypress CY8C24223, CY8C24423, and CY8C24123 are powerful and flexible programmable system-on-chip solutions. With a combination of configurable analog and digital blocks, solid performance specifications, and an easy-to-use development environment, these devices stand out for engineers working on innovative embedded applications across numerous industries. Their low power consumption further enhances their appeal for modern applications, making them a strong choice for designers.

Cypress CY8C24223, CY8C24123 manual AC External Clock Specifications, AC Programming Specifications

Models: CY8C24123 CY8C24423 CY8C24223

CY8C24123