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FLASH Replacement for 87C552?

Started by Elan Magavi June 28, 2006
Has anyone made a version of the 87C552 which is flash based with ISP?  We 
have a product that uses this old micro and a designer has moved that 
portion of the device into a new layout. We would love to be able to use ISP 
to code it.

Thanks

Elan



Elan Magavi wrote:

> Has anyone made a version of the 87C552 which is flash based with ISP? We > have a product that uses this old micro and a designer has moved that > portion of the device into a new layout. We would love to be able to use ISP > to code it.
That's a good question - Philips have a blind-spot there. IIRC, they once did a Flash QFP, but at a high price, as it was intended as a prototype vehicle only. So, there is no pin-compatible alternative, but there are a number of functional supersets, depending on how many IO you really need, package, and if it needs 5V compatible operation. Look at these, for ADC, >= 8K, larger pin counts : Silabs C8051F4xx : 5V, 32KF, 12 bit ADC/DAC, on chip debug, 50 Mips (but less io), older ones with more IO, but not 5V vcc. Philips P89LPC952 : 3.3V Vcc only, and 40/42 io, 8KF Atmel AT89C51AC3 : 5V / EE / 64KF ST uPSD family : 3V/5V models, Tons of code space, ADC AD ADuC8xx -jg
"Jim Granville" <no.spam@designtools.co.nz> wrote in message 
news:44a2f6d7$1@clear.net.nz...
> Elan Magavi wrote: > >> Has anyone made a version of the 87C552 which is flash based with ISP? >> We have a product that uses this old micro and a designer has moved that >> portion of the device into a new layout. We would love to be able to use >> ISP to code it. > > That's a good question - Philips have a blind-spot there. > IIRC, they once did a Flash QFP, but at a high price, as it was intended > as a prototype vehicle only. > > So, there is no pin-compatible alternative, but there are > a number of functional supersets, depending on how many IO > you really need, package, and if it needs 5V compatible operation. > > Look at these, for ADC, >= 8K, larger pin counts : > Silabs C8051F4xx : 5V, 32KF, 12 bit ADC/DAC, on chip debug, 50 Mips (but > less io), older ones with more IO, but not 5V vcc. > Philips P89LPC952 : 3.3V Vcc only, and 40/42 io, 8KF > Atmel AT89C51AC3 : 5V / EE / 64KF > ST uPSD family : 3V/5V models, Tons of code space, ADC > AD ADuC8xx > > -jg >
Thanks Jim! Unfortunately they've already got the PCB under assembly. Looks like an ICE is my only option.. been a while since I've needed one. :(