[Q:] Need help about INTEL 8052 AH, 8752 BH (8051 Familly).

[FARGET Vincent]

Hello,

I have a test board to develop an application using a 8052 AH-BASIC microcontroller.
There is 16Ko of RAM and 8Ko of UVEPROM on this board. I use a PC to send BASIC
files to the board bu the serial port. So the Port 0, Port 2 and Port 3 are used by the
8052 AH-BASIC to execute the program in UVEPROM. The 8052 AH-BASIC is a ROM
less microcontroller.

My problem is that I only have Port 1 (8 // bits) as Input/Output port, but for my application
I need 2*8 bits as Output port. I also use the serial port of the 8052 AH-BASIC to received
serial data.

So my questions are :
----------------------------------

1.) Is there another INTEL 8051 familly microcontroller which have :

Whether :
- A serial port, 3 or 4*8 bits I/O port, some internal EEPROM or UVEPROM
and that is BASIC programmable.

Or :
- A serial port, 6*8 bits I/O port (2*8 bits I/O port reserved for external UVEPROM),
no internal ROM and that is BASIC programmable.

Thank for your help in advance.
-
FARGET Vincent
Laboratoire de Physiologie Neurosensorielle
Universite Claude Bernard LYON 1
43, Bd du 11 Novembre 1918
69622 VILLEURBANNE Cedex
FRANCE
far...@neurosens.univ-lyon1.fr

[Karl-Heinz Wietzke]

In article <3o7fod$4...@cismsun.univ-lyon1.fr>
far...@neurosens.univ-lyon1.fr (FARGET Vincent) writes:
>Hello,
[..]

>My problem is that I only have Port 1 (8 // bits) as Input/Output port, but
>for my application
>I need 2*8 bits as Output port. I also use the serial port of the 8052
>AH-BASIC to received
>serial data.

> So my questions are :
>----------------------------------

>1.) Is there another INTEL 8051 familly microcontroller which have :

> Whether :
> - A serial port, 3 or 4*8 bits I/O port, some internal EEPROM or UVEPROM
> and that is BASIC programmable.

> Or :
> - A serial port, 6*8 bits I/O port (2*8 bits I/O port reserved for
>external UVEPROM),
> no internal ROM and that is BASIC programmable.

>Thank for your help in advance.

The Assembler Sources for the Basic Interpreter are available from Intel's
ftp Server, so it is possible to make (nearly) ANY 8051 family member
Basic programmable, like 80C451 or 80C537.
ftp.intel.com/ (?) /Basic.zip

Here in Germany some companies sell a Basic adapted to a 80C535-Board.
This chip has 6 8-bit Ports, 8* 8-bit A/D,
PWM ouput, and other features.
So two of those 8 bit Ports are free for the user.

But if you need only port's, why not use the 8052 with some latches on
the data bus, adressed as XMEM ?
----
Karl-Heinz Wietzke sp...@physik.uni-paderborn.de