CY7C68013A, CY7C68014A CY7C68015A, CY7C68016A

3.18 I2C Controller

FX2LP has one I2C port that is driven by two internal controllers, one that automatically operates at boot time to load VID/PID/DID and configuration information, and another that the 8051 uses when running to control external I2C devices. The I2C port operates in master mode only.

3.18.1 I2C Port Pins

The I2C pins SCL and SDA must have external 2.2 kΩ pull up resistors even if no EEPROM is connected to the FX2LP. External EEPROM device address pins must be configured properly. See Table 8 for configuring the device address pins.

Table 8. Strap Boot EEPROM Address Lines to These Values

Bytes

Example EEPROM

A2

A1

A0

16

24LC00[9]

N/A

N/A

N/A

128

24LC01

0

0

0

 

 

 

 

 

256

24LC02

0

0

0

 

 

 

 

 

4K

24LC32

0

0

1

 

 

 

 

 

8K

24LC64

0

0

1

 

 

 

 

 

16K

24LC128

0

0

1

 

 

 

 

 

3.18.2 I2C Interface Boot Load Access

At power on reset the I2C interface boot loader loads the VID/PID/DID configuration bytes and up to 16 KBytes of program/data. The available RAM spaces are 16 KBytes from 0x0000–0x3FFF and 512 bytes from 0xE000–0xE1FF. The 8051 is in reset. I2C interface boot loads only occur after power on reset.

3.18.3 I2C Interface General-Purpose Access

The 8051 can control peripherals connected to the I2C bus using the I2CTL and I2DAT registers. FX2LP provides I2C master control only, it is never an I2C slave.

3.19Compatible with Previous Generation EZ-USB FX2

The EZ-USB FX2LP is form, fit and with minor exceptions functionally compatible with its predecessor, the EZ-USB FX2. This makes for an easy transition for designers wanting to upgrade their systems from the FX2 to the FX2LP. The pinout and package selection are identical and a vast majority of firmware previously developed for the FX2 functions in the FX2LP.

For designers migrating from the FX2 to the FX2LP a change in the bill of material and review of the memory allocation (due to increased internal memory) is required. For more information about migrating from EZ-USB FX2 to EZ-USB FX2LP, see the application note titled Migrating from EZ-USB FX2 to EZ-USB FX2LP available in the Cypress web site.

Table 9. Part Number Conversion Table

EZ-USB FX2

EZ-USB FX2LP

Package Description

Part Number

Part Number

 

CY7C68013-56PVC

CY7C68013A-56PVXC or CY7C68014A-56PVXC

56-pin SSOP

 

 

 

CY7C68013-56PVCT

CY7C68013A-56PVXCT or CY7C68014A-56PVXCT

56-pin SSOP – Tape and Reel

 

 

 

CY7C68013-56LFC

CY7C68013A-56LFXC or CY7C68014A-56LFXC

56-pin QFN

 

 

 

CY7C68013-100AC

CY7C68013A-100AXC or CY7C68014A-100AXC

100-pin TQFP

 

 

 

CY7C68013-128AC

CY7C68013A-128AXC or CY7C68014A-128AXC

128-pin TQFP

 

 

 

Note

9. This EEPROM does not have address pins.

Document #: 38-08032 Rev. *L

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Cypress CY7C68015A manual 18 I2C Controller, Compatible with Previous Generation EZ-USB FX2, Part Number Conversion Table

CY7C68016A, CY7C68014A, CY7C68015A, CY7C68013 specifications

The Cypress CY7C68013, CY7C68015A, CY7C68014A, and CY7C68016A are part of Cypress Semiconductor's EZ-USB family of microcontrollers, known for their high performance and flexibility in USB applications. These devices are primarily used for USB interfacing and have gained popularity in various industries due to their robust features and capabilities.

One of the main features of the CY7C68013 is its Dual FIFO architecture, allowing for efficient data transfer between USB and the system memory. This feature optimizes throughput and reduces CPU overhead, making it an excellent choice for applications that require high-speed data exchange, such as video streaming, data acquisition, and industrial automation. The device is equipped with a USB 2.0 interface which supports full-speed operation at 12 Mbps, ensuring compatibility with a wide range of USB devices.

The CY7C68015A, a similar variant, offers additional memory options, providing users with the flexibility to select the necessary capacity for their specific applications. This part is particularly useful in scenarios that demand more users or higher data storage, making it ideal for complex USB peripherals like printers and multifunction devices. Moreover, it includes a unique capability of upgradeable firmware, ensuring that the device remains relevant and functional as technology evolves.

In contrast, the CY7C68014A stands out with its support for isochronous data transfers, making it suitable for real-time applications that require timely data delivery. This is particularly important in audio and video applications where delays can impact performance. The device incorporates advanced power management features, allowing it to operate efficiently both in low and high-power modes.

Lastly, the CY7C68016A integrates enhanced security features, positioning it as an ideal choice for applications that require data integrity and protection against unauthorized access. It supports various encryption standards and provides secure boot capabilities, making it suitable for secure environments such as financial transactions and sensitive data processing.

In summary, the CY7C68013, CY7C68015A, CY7C68014A, and CY7C68016A microcontrollers offer a versatile suite of features that cater to a wide array of USB applications. Their design emphasizes performance, flexibility, and security, making them essential components in today's rapidly evolving technology landscape. Whether in consumer electronics, industrial automation, or specialized applications, these devices provide the reliability and efficiency that engineers and developers require.