Cypress CY7C68013A 18 I2C Controller, Compatible with Previous Generation EZ-USB FX2, Part Number

Models: CY7C68013A

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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 CY7C68013A manual 18 I2C Controller, Compatible with Previous Generation EZ-USB FX2, Part Number Conversion Table

CY7C68013A specifications

The Cypress CY7C68013A is a high-performance USB microcontroller that belongs to Cypress's FX2LP family, specifically designed for USB applications. This microcontroller is well-regarded for its versatility, making it a popular choice for developers engaged in USB-enabled projects.

One of the main features of the CY7C68013A is its ability to support USB 2.0, with both high-speed (480 Mbps) and full-speed (12 Mbps) operation. This capability allows developers to take full advantage of the USB interface for data transfer, making it suitable for applications that require fast and efficient data communication. The device integrates a USB controller along with an 8051-compatible microcontroller, providing a seamless interface for USB transactions while also allowing for custom processing tasks.

The CY7C68013A offers 32 KB of internal RAM, which is a valuable resource for data buffering and temporary storage during data transfer operations. Additionally, it includes a programmable 8-bit I/O interface, which can be tailored to various application needs, facilitating control over peripheral devices. The microcontroller also features a 16-bit address bus and a 16-bit data bus, enhancing its ability to interface with external memory and components.

In terms of development, moving from concept to production becomes easier due to the availability of development kits and software support. The CY7C68013A is compatible with Cypress's EZ-USB development environment, which includes APIs and libraries that simplify the coding process. This software support empowers developers to create sophisticated USB-related applications without needing extensive background knowledge in USB protocol intricacies.

Regarding power efficiency, the CY7C68013A operates at low power consumption levels, making it suitable for battery-operated devices. It supports various low-power modes, which further enhances its appeal for portable applications.

Overall, the Cypress CY7C68013A stands out for its robust features, flexibility, and ease of use, making it an ideal choice for engineers working on USB-centric designs. Its combination of high-speed USB functionality, ample internal resources, and strong software support positions it as a go-to microcontroller for a wide variety of applications, ranging from consumer electronics to industrial systems.