Comments on: Interfacing EEPROM with PIC Microcontroller

By: SREERAG

SREERAG — Wed, 22 Feb 2017 10:18:00 +0000

Hi Ligo Sir

I am designing a speedometer cum odometer for my motor cycle.I need your help.My compiler is Mikro C.How can i store the odometer readings to external eeprom if the readings exceed 8 bit data?How can i store if the kilometer exceeds 255?Your earliest reply is expected.Give me the mikro c code also.Thanks in advance.I am using pic16f877a and 24c02 eeprom.Need to store km readings and read it back and display it on lcd(16×2).

By: MUBEEN RAHIMAN

MUBEEN RAHIMAN — Fri, 06 Jan 2017 07:25:00 +0000

hi,

please help me. how can i erase the contents of EEPROM 24LC512 in microc

By: Sushant Mahanta

Sushant Mahanta — Thu, 22 Dec 2016 19:21:00 +0000

In reply to Ligo George. if i will use 2 eeprom in the i2c bus.first address will be 1010000 and second device adress will be 1010001 ??

By: Ligo George

Ligo George — Sat, 19 Dec 2015 10:10:00 +0000

In reply to Rafiqul Hasan. Sorry, I don't have any C18 codes.

By: Rafiqul Hasan

Rafiqul Hasan — Wed, 02 Dec 2015 08:38:00 +0000

Hi Ligo, may I plz have the code for C18 compiler?? Actually i need to write a code for Library Management system by using PIC18F4550 microcontroller.

By: Ligo George

Ligo George — Tue, 17 Sep 2013 02:06:00 +0000

In reply to Biplav Timalsina. Yup..

By: Biplav Timalsina

Biplav Timalsina — Mon, 16 Sep 2013 15:42:00 +0000

In reply to Ligo George. oh, i got it now!u mean we hardwire the address of each EEPROMs by setting or grounding their A0,A1, A2 pins differently in 8 different combinations(since 3 bits are used), thus generating a particular address to each EEPROM, right? thanks a great deal

By: Ligo George

Ligo George — Tue, 18 Jun 2013 12:07:00 +0000

In reply to Biplav Timalsina.

You can connect pins A0, A1, A2 of the eeprom to different status (VDD or VSS) … and you can address a particular eeprom as explained in the Device Addressing Section…

By: Biplav Timalsina

Biplav Timalsina — Tue, 18 Jun 2013 02:30:00 +0000

In reply to Ligo George. if we are connecting more than 1 EEPROMs then, (here since we can join 8 EEPROMs), how does the EEPROMs know that the a particular 3 bit code varying from 000 to 111 is meant for them?is there a code to assign those 3 bit codes to respective EEPROMs??

By: Ligo George

Ligo George — Fri, 05 Apr 2013 10:25:00 +0000

In reply to Rohan Amin.

See the section Device Addressing…
You can see that there are 8bits for addressing…
Higher 4 bits (1010) is preset in the device.. next 3 bits are the status of A2, A1, A0 of the device and the last bit specifies whether we want to write or read from the device…….
By using A2,A1,A0 we can connect up to 8 EEPROM to an I2C Bus….