Micros that ship with boot loaders and flash serially

Dan L. OP (Company: personal) #5673723
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I'm hoping to identify more micros similar to Atmel AT89C51cc003 - by 
this I mean micros that ship with a boot loader and can be programmed 
serially via CAN/LIN/ASYN with a single pin selection (PSEN)

or micros like the zilog Z8 that can be programmed and debugged with 
just GND and DBG

BUT - in automotive grade.

Thanks
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Bauform B. Guest #5674814
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Dan L. wrote:

> or micros like the zilog Z8 that can be programmed and debugged with
> just GND and DBG

The Freescale S12 family uses a single pin plus reset:

1
5.2 External Signal Description

2
A single-wire interface pin called the background debug interface

3
(BKGD) pin is used to communicate with the BDM system. During reset,

4
this pin is a mode select input which selects between normal and

5
special modes of operation. After reset, this pin becomes the

6
dedicated serial interface pin for the background debug mode.


https://www.nxp.com/products/processors-and-microcontrollers/additional-processors-and-mcus/8-16-bit-mcus/16-bit-s12-and-s12x-mcus:S12S12X
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