CAT24C512

CAT24C512 is a 65,536words × 8 bits EEPROM (Electrically Erasable Programmable Read-Only Memory) chip manufactured by onsemi. This posting will provide the OSS-ECAL(Open Source Software for Electronic Components Abstraction Layer) for CAT24C512.
MCU interface : I2C

CAUTION:Please be sure to refer to the latest version of the Datasheet prior to actual design.

CAT24C512

General description

The CAT24C512 is a EERPOM Serial 512−Kb I²C internally organized as 65,536 words of 8 bits each.
It features a 128−byte page write buffer and supports the Standard (100 kHz), Fast (400 kHz) and Fast−Plus (1 MHz) I²C protocol.
Write operations can be inhibited by taking the WP pin High (this protects the entire memory).
External address pins make it possible to address up to eight CAT24C512 devices on the same bus.
On−Chip ECC (Error Correction Code) makes the device suitable for high reliability applications.

Feature

Supports Standard, Fast and Fast−Plus I²C Protocol
1.8 V to 5.5 V Supply Voltage Range
128−Byte Page Write Buffer
Hardware Write Protection for Entire Memory
Schmitt Triggers and Noise Suppression Filters on I2C Bus Inputs (SCL and SDA)
Low Power CMOS Technology
1,000,000 Program/Erase Cycles
100 Year Data Retention
Industrial and Extended Temperature Range
8−pin, SOIC, TSSOP, 8−pad UDFN and 8−ball WLCSP Packages
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

OSS-ECAL specification

API Function

etSTS oCAT24C512_BYTE_WRITE( etCMP cmp, uint16 mem_adr, uint8 val )

The oCAT24C512_BYTE_WRITE function is an API function that writes the value of val to the specified address mem_adr for the CAT24C512. This function returns the return value eSTS_EXE until the time to complete the write (iCAT24C512_WRITE_TIME [ms]) has elapsed.

NOTE :
The iCAT24C512_WRITE_TIME [ms] elapsed measurement is calculated from the Thread period that calls this function, so set the Thread period to THREAD_OSS_ECAL_PERIOD [ms].
Please use the oCAT24C512_WP_DIS function to release write-protection before using this function.

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_EXE	During execution
		eSTS_ERR_PARAMETER	Parameter error(Memory address)
		eSTS_ERR_I2C_OBJECT	I2C object selection error
		eSTS_ERR_OTHERS_RUN	Other components are executing the process
		eSTS_ERR_HAL_OTHERS_RUN	Other application is running HAL
		eSTS_ERR_HAL_I2C	HAL I2C error
Parameter IN	etCMP cmp	OSS-ECAL components code
	uint16 mem_adr	Memory address	0x0000 to 0xFFFF
	uint8 val	Data to write

etSTS oCAT24C512_PAGE_WRITE( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )

The oCAT24C512_PAGE_WRITE function is an API function that writes the values buf[0] through buf[len-1] for the CAT24C512 in order from the specified address mem_adr. This function returns the return value eSTS_EXE until the time to complete the write (iCAT24C512_WRITE_TIME [ms]) has elapsed.

NOTE :
If mem_adr + len > 0bXXXXXXXXXXX1111111, addresses A7 to A15 are fixed and A0 to A6 are rolled over to 0bXXXXXXXXXXX0000000.
The iCAT24C512_WRITE_TIME [ms] elapsed measurement is calculated from the Thread period that calls this function, so set the Thread period to THREAD_OSS_ECAL_PERIOD [ms].
Please use the oCAT24C512_WP_DIS function to release write-protection before using this function.

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_EXE	During execution
		eSTS_ERR_PARAMETER	Parameter error(Memory address)
		eSTS_ERR_I2C_OBJECT	I2C object selection error
		eSTS_ERR_OTHERS_RUN	Other components are executing the process
		eSTS_ERR_HAL_OTHERS_RUN	Other application is running HAL
		eSTS_ERR_HAL_I2C	HAL I2C error
Parameter IN	etCMP cmp	OSS-ECAL components code
	uint16 mem_adr	Memory address	0x0000 to 0xFFFF
	uint16 len	Number of bytes to write (Max 128)
	uint8* buf	Data buffer to write

etSTS oCAT24C512_IMM_ADR_READ( etCMP cmp, uint8* rlt )

The oCAT24C512_IMM_ADR_READ function is an API function that reads the value of 1 byte from the last Read or Write address + 1 for the CAT24C512 and stores it in rlt.

NOTE :
If the last Read or Write address + 1 > 0b111111111111111111111111, the address rolls over to 0b00000000000000000000000000.

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_ERR_I2C_OBJECT	I2C object selection error
		eSTS_ERR_OTHERS_RUN	Other components are executing the process
		eSTS_ERR_HAL_OTHERS_RUN	Other application is running HAL
		eSTS_ERR_HAL_I2C	HAL I2C error
Parameter IN	etCMP cmp	OSS-ECAL components code
Parameter OUT	uint8* rlt	Data to read

etSTS oCAT24C512_SELECT_READ( etCMP cmp, uint16 mem_adr, uint8* rlt )

The oCAT24C512_SELECT_READ function is an API function that reads a 1-byte value from a specified address mem_adr for the CAT24C512 and stores it in rlt.

NOTE :

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_ERR_PARAMETER	Parameter error(Memory address)
		eSTS_ERR_I2C_OBJECT	I2C object selection error
		eSTS_ERR_OTHERS_RUN	Other components are executing the process
		eSTS_ERR_HAL_OTHERS_RUN	Other application is running HAL
		eSTS_ERR_HAL_I2C	HAL I2C error
Parameter IN	etCMP cmp	OSS-ECAL components code
	uint16 mem_adr	Memory address	0x0000 to 0xFFFF
Parameter OUT	uint8* rlt	Data to read

etSTS oCAT24C512_SEQ_READ( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )

The oCAT24C512_SEQ_READ function is an API function that reads data for len from the specified address mem_adr for the CAT24C512 in sequence and stores the data from buf[0] to buf[len-1].

NOTE :
If mem_adr + len > 0b111111111111111111111111, the address rolls over to 0b00000000000000000000000000.

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_ERR_PARAMETER	Parameter error(Memory address)
		eSTS_ERR_I2C_OBJECT	I2C object selection error
		eSTS_ERR_OTHERS_RUN	Other components are executing the process
		eSTS_ERR_HAL_OTHERS_RUN	Other application is running HAL
		eSTS_ERR_HAL_I2C	HAL I2C error
Parameter IN	etCMP cmp	OSS-ECAL components code
	uint16 mem_adr	Memory address	0x0000 to 0xFFFF
	uint16 len	Number of bytes to read
Parameter OUT	uint8* rlt	Data to read

etSTS oCAT24C512_WP_EN( etCMP cmp )

The oCAT24C512_WP_EN function is an API function that outputs Write protect enable (write disable) = “Hi” for the CAT24C512.

NOTE :

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_ERR_GPIO_OBJECT	GPIO object selection error
Parameter IN	etCMP cmp	OSS-ECAL components code

etSTS oCAT24C512_WP_DIS( etCMP cmp )

The oCAT24C512_WP_DIS function is an API function that outputs Write protect disable (write enable) = “Low” for the CAT24C512.

NOTE :

Return value	etSTS	OSS-ECAL status code
		eSTS_FIN	Completed successfully
		eSTS_ERR_GPIO_OBJECT	GPIO object selection error
Parameter IN	etCMP cmp	OSS-ECAL components code

Files

Folder^*	File	Summary
CAT24C512_HALNAME_VERSION/sample	sample.c (.cpp)	Sample Application Program
	sample.h	Sample Application Header
CAT24C512_HALNAME_VERSION	oCAT24C512.c (.cpp)	OSS-ECAL Program for CAT24C512
	oCAT24C512.h	OSS-ECAL Header for CAT24C512
	CAT24C512_ARDUINO.ino	Sample application programs for Arduino
	oss_ecal.h	OSS-ECAL Common Header (Ver 01.00.00 or later, AUTOSAR is Ver 01.01.07 or later)
	user_setting.c (.cpp)	Const and Table of User setting
	user_setting.h	Header of User setting
	oHAL_i2c_stm32f4.c	HAL Program for STM32Cube FW_F4
	oHAL_i2c_stm32f4.h	HAL Header for STM32Cube FW_F4
	readme.md	Readme
	OSS-ECAL Terms of Use.txt	OSS-ECAL Terms of Use

* For HALNAME, please refer to HAL Support.

HAL Support List

HAL	MCU*	Development environment*	HALNAME
Arduino 1.8.6	ATmega2560 ATmega328P	Mega 2560 Rev3 Arduino Pro Mini 3.3V	ARDUINO
ARM Mbed 6.17.0	STM32F401RE	STM32 Nucleo-64 boards	MBED
Infineon ModusToolbox HAL Cat1 2.4.3	CYBLE-416045-02	CY8CPROTO-063-BLE PSoC 6 BLE Prototyping Kit	ModusToolbox
NXP MCUXpresso SDK iMXRT1051B_1052B ksdk2_0	MIMXRT1052DVL6A	IMXRT1050-EVKB	iMXRT1051B1052B
Renesas SSP 2.4.0	R7FS7G27H3A01CFC	S7G2 SK	SSP
STM STM32Cube FW_F4 V1.27.1	STM32F401RE	STM32 Nucleo-64 boards	STM32F4
Debian(Linux) v2022.04	TI AM335x	BeagleBone Black – Rev C	Linux

* MCU and development environment at the time of development. Even if the same HAL is used, different MCUs and development environments may not work together.

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Built-in How to

Please refer to the following to incorporate API functions into your user program.

Pin A0, A1, and A2 should be set with the following code in user_setting.h.
How to set I2C Device Address in Renesas SSP.

// Device address Code bit2:A2, bit1:A1, bit0:A0
#define CAT24C512_1             0b00000111

For Infineon ModusToolbox HAL, set the I2C Timeout setting with the following code in user_setting.h. For details, see cyhal_i2c_master_write(), cyhal_i2c_master_read() Parameters timeout.

#define I2C_TIMEOUT             10U     // Timeout[ms]

For STM32Cube FW_F4 HAL, I2C Timeout time is 25ms.

Note :
For the following command API functions, the Timeout time varies depending on the Read/Write data length len.
etSTS oCAT24C512_PAGE_WRITE( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )
etSTS oCAT24C512_SEQ_READ( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )

How to incorporate OSS-ECAL into user programs

How to incorporate multiple OSS-ECALs in a user program (same MCU function)

How to incorporate multiple OSS-ECALs in a user program (different MCU function)

How to incorporate multiple identical electronic components into a user program

How to reduce the impact on user programs by replacing electronic components

CAUTION

The sample version of OSS-ECAL is not intended to be used with Threads (Tasks) or interrupts of different priority. Please do not use it as in the example below.

Example: If each sensor is assigned to the same ADC group and the OSS-ECAL API is executed in processes with different priorities, correct values may not be obtained.
ADC Gr0 Ch0　Temperature sensor AD22100A　100ms cycle Thread (low priority) to take in temperature
ADC Gr0 Ch1　Pressure sensor　　 MPX5999D　Event interrupts (high priority) to take pressure