Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Casio fx-880p CPU HD62002A03 Datasheet

Status
Not open for further replies.

popy

New Member
I need the datasheet or info about the CPU HD62002A03. This chip is the CPU of a Casio calculator model fx-880P. The manufacturer is Hitachi but... nothing in Google about this CPU.

Thanks!
 
I would imagine it's a mask programmed chip, specifically made for Casio, so there won't be a datasheet - you 'may' be able to find the generic chip it's based on, but you will have to try and extrapolate from the number on the Casio chip. But even if you can find one?, I wouldn't have thought it would be much help, as 'presumably' it has pre-programmed ROM inside?.
 
This calculator has these ICs:

CPU: Hitachi HD62002A03 at 1.228 MHz
RAM: 32 KB (external chip)
ROM: 32 KB (external chip). Optional: expansion pack of 32 KB.
LCD drivers: 2 x HD66100F (I have the datasheet: lcd driver with 80 channels/outs).

Probably the interpreter of BASIC is integrated in the CPU... and in the external ROM only the software libraries...
 
popy said:
This calculator has these ICs:

CPU: Hitachi HD62002A03 at 1.228 MHz
RAM: 32 KB (external chip)
ROM: 32 KB (external chip). Optional: expansion pack of 32 KB.
LCD drivers: 2 x HD66100F (I have the datasheet: lcd driver with 80 channels/outs).

Probably the interpreter of BASIC is integrated in the CPU... and in the external ROM only the software libraries...
I don't think you have shown any evidence for your hypothesis. Even if you knew something about the processor you would have a complete lack of tools for doing anything with it.

Any programmers out there who have ever written a program for this processor please clap your hands...?....?

And the roars of applause were stillborn.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top