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
This product provides the following command API functions.
etSTS oCAT24C512_BYTE_WRITE( etCMP cmp, uint16 mem_adr, uint8 val )
Return value
Parameter IN
etSTS
etCMP cmp
uint16 mem_adr
uint8 val
OSS-ECAL status code
OSS-ECAL Components number codes
Memory address
Write data
Feature :
Command API function to write the value of val to the address specified by mem_adr.
Process :
1. Writes the value of val to the address specified in mem_adr.
2. Wait until measurement time iCAT24C512_WRITE_TIME[ms] has elapsed (return value eSTS_EXE while waiting).
Return value :
eSTS_FIN
eSTS_EXE
eSTS_ERR_PARAMETER
eSTS_ERR_HAL_I2C
eSTS_ERR_OTHERS_RUN
eSTS_ERR_I2C_OBJECT
NOTE :
iCAT24C512_WRITE_TIME[ms] Progress measurement is calculated from the Thread cycle that calls this API function, so please set the Thread cycle to THREAD_OSS_ECAL_PERIOD[ms].
etSTS oCAT24C512_PAGE_WRITE( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )
Return value
Parameter IN
etSTS
etCMP cmp
uint16 mem_adr
uint16 len
uint8* buf
OSS-ECAL status code
OSS-ECAL Components number codes
Memory address
Number of bytes to write (max 128)
Data buffer to write
Feature :
Command API function that writes values from buf[0] to buf[len-1] in order from the address specified in mem_adr.
Process :
1. Write values from buf[0] to buf[len-1] in order from the address specified in mem_adr.
2. Wait until measurement time iCAT24C512_WRITE_TIME[ms] has elapsed (return value eSTS_EXE while waiting).
Return value :
eSTS_FIN
eSTS_EXE
eSTS_ERR_PARAMETER
eSTS_ERR_HAL_I2C
eSTS_ERR_OTHERS_RUN
eSTS_ERR_I2C_OBJECT
NOTE :
If mem_adr + len > 0bXXXXXXXXXXX1111111, addresses A7 to A15 are fixed and A0 to A6 are rolled over to 0bXXXXXXXXXXX0000000.
iCAT24C512_WRITE_TIME[ms] Progress measurement is calculated from the Thread cycle that calls this API function, so please set the Thread cycle to THREAD_OSS_ECAL_PERIOD[ms].
etSTS oCAT24C512_IMM_ADR_READ( etCMP cmp, uint8* rlt )
Return value
Parameter IN
Parameter OUT
etSTS
etCMP cmp
uint8* rlt
OSS-ECAL status code
OSS-ECAL Components number codes
Read data
Feature :
Command API function to read 1Byte value from the last Read or Write address +1 and save it to rlt.
Process :
1. Read 1Byte value from the last read or write address +1 and save it to rlt.
Return value :
eSTS_FIN
eSTS_ERR_HAL_I2C
eSTS_ERR_OTHERS_RUN
eSTS_ERR_I2C_OBJECT
NOTE :
If the last Read or Write address + 1 > 0b111111111111111111111111, the address rolls over to 0b00000000000000000000000000.
etSTS oCAT24C512_SELECT_READ( etCMP cmp, uint16 mem_adr, uint8* rlt )
Return value
Parameter IN
Parameter OUT
etSTS
etCMP cmp
uint16 mem_adr
uint8* rlt
OSS-ECAL status code
OSS-ECAL Components number codes
Memory address
Read data
Feature :
Command API function that reads 1 Byte worth of value from the address specified in mem_adr and saves it to rlt.
Process :
1. Read 1Byte worth of value from the address specified in mem_adr and save it to rlt.
Return value :
eSTS_FIN
eSTS_ERR_PARAMETER
eSTS_ERR_HAL_I2C
eSTS_ERR_OTHERS_RUN
eSTS_ERR_I2C_OBJECT
NOTE :
etSTS oCAT24C512_SEQ_READ( etCMP cmp, uint16 mem_adr, uint16 len, uint8* buf )
Return value
Parameter IN
Parameter OUT
etSTS
etCMP cmp
uint16 mem_adr
uint16 len
uint8* buf
OSS-ECAL status code
OSS-ECAL Components number codes
Memory address
Number of bytes to read
Data buffer to read
Feature :
Command API function that reads sequentially from the address specified in mem_adr and saves from buf[0] to buf[len-1].
Process :
1. Read in order from the address specified in mem_adr and save from buf[0] to buf[len-1].
Return value :
eSTS_FIN
eSTS_ERR_PARAMETER
eSTS_ERR_HAL_I2C
eSTS_ERR_OTHERS_RUN
eSTS_ERR_I2C_OBJECT
NOTE :
If mem_adr + len > 0b111111111111111111111111, the address rolls over to 0b00000000000000000000000000.
etSTS oCAT24C512_WP_EN( etCMP cmp )
Return value
Parameter IN
etSTS
etCMP cmp
OSS-ECAL status code
OSS-ECAL Components number codes
Feature :
Command API function to write protect enable (write disable).
Process :
1. Write protect output as “Hi”.
Return value :
eSTS_FIN
eSTS_ERR_GPIO_OBJECT
NOTE :
etSTS oCAT24C512_WP_DIS( etCMP cmp )
Return value
Parameter IN
etSTS
etCMP cmp
OSS-ECAL status code
OSS-ECAL Components number codes
Feature :
Command API function to write protect disable (write enable).
Process :
1. Write protect output as “Low”.
Return value :
eSTS_FIN
eSTS_ERR_GPIO_OBJECT
NOTE :
Files
| Folder* | File | summary |
|---|---|---|
| CAT24C512_HALNAME/sample | sample.c (.cpp) | Sample Application Program |
| | sample.h | Sample Application Header |
| CAT24C512_HALNAME | oCAT24C512.c (.cpp) | OSS-ECAL Program for CAT24C512 |
| | oCAT24C512.h | OSS-ECAL Header for CAT24C512 |
| | oss_ecal.h | OSS-ECAL Common Header (Ver 01.01.00 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
| MCU/Board manufacturer | HAL | MCU* | Development environment* | HALNAME |
|---|---|---|---|---|
| Arduino | Arduino 1.8.6 | ATmega2560 ATmega328P | Mega 2560 Rev3 Arduino Pro Mini 3.3V | ARDUINO |
| ARM | Mbed 6.17.0 | STM32F401RETx | 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 | CYBLE-416045-02 | IMXRT1050-EVKB | iMXRT1051B1052B |
| Renesas | SSP 2.4.0 | R7FS7G27H3A01CFC | S7G2 SK | SSP |
| STM | STM32Cube FW_F4 V1.27.1 | STM32F401RETx | STM32 Nucleo-64 boards | STM32F4 |
* 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.
OSS-ECAL Download
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| HAL | Download OSS-ECAL Ver |
|---|---|
| Arduino 1.8.6 | |
| Mbed 6.17.0 | |
| ModusToolbox HAL Cat1 2.4.3 | |
| MCUXpresso SDK iMXRT1051B_1052B ksdk2_0 | |
| SSP 2.4.0 | |
| STM32Cube FW_F4 V1.27.1 |
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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 0b00000111For 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 )
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