m24C64 i2c eeprom - Interfacing - Arduino Forum
Aug 1, 2010 · m24C64 i2c eeprom. Forum 2005-2010 (read only) Hardware. Interfacing. system August 1, 2010, 7:23pm ...
Incorrect read from serial EEPROM 24C64 using Wire library
Jan 11, 2021 · I try to use serial EEPROM 24C64 and Wire library. I have a problem reading from it. After Wire.requestFrom(CHIP_ADDR, n) first Wire.read() always returns zero. Here is a code which explain this. #include <Wire.h> #define CHIP_ADDR_1 0x50 // EEPROM 24C64 void setup() {//su Serial.begin(38400); Wire.begin(CHIP_ADDR_1); //-- First write 16 bytes -- // …
Announcement: AT24C I2C EEProm Management Library
Aug 1, 2010 · Just found you Bank project and looks like just what I need, so I will check it out. I do have a question, you have pull-ups on each EEPROM chip's SDA & SCL line.
Augmenter la mémoire pour y rajouter du code - Arduino Forum
Sep 5, 2014 · Bonjour ! Alors voilà, j'ai un soucis , je bosse sur un code qui, pour le moment, ne dépasse pas la moitié de la mémoire de mon Arduino Uno (32KB) mais qui va surement les dépasser. Je me demandais donc comment je pourrais faire pour pouvoir stocker, par exemple, la code "de base" sur la mémoire Flash, comme d'hab quoi, et les fonctions sur une mémoire …
Help understanding 24LC256 Addressing - Storage - Arduino Forum
Jan 15, 2022 · Hi, Can anyone verify if my understanding of the address pins of a 24LC256 is correct? I believe the address pins do not have to be manipulated in order to address/access all 256k of the device. (aka 32k 8 bit bytes) Is this correct? Is the below wiring correct? I want to finish my PCB design before I receive my parts, so I cannot test to verify. Thanks John …
Trouble interfacing to a AT24C256 EEPROM Using NAno
Nov 5, 2021 · I have my own PCB and am interfacing a AT24C256 EEPROM with a Nano but I cannot write data to it. I have SDA and SCL pins connected to the Nano A4 and A5 respectively. Address is set to 0x51 (A0=5v, A1 and A2 = GND) VCC is 5v WP is GND I have confirmed all of the above with a multimeter. If I run a i2c scanner sketch it identifies a device at 0x51 as …
24C256 EEPROM does not write and read? - Arduino Forum
Jul 1, 2022 · I am using either Nano and Uno with AMTEL 24C256 with 4.7K pull up on SDA and SCL pins. The I2C scanner did detected shows 0X50 as very good. A0, A1, A2, A3, and WP connected to all GND. so here my IDE: #include <Wire.h> #define EEPROM_I2C_ADDRESS_0 0x50 int EEPROM_I2C_ADDRESS = NULL; int i=0; void setup() { Wire.begin(); …