Philips UM10109 Benutzerhandbuch

 

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

FMCON = LOAD; //load command, clears page reg

FMADRH = page_hi; //

FMADRL = page_lo; //write my page address to addr regs

for (i=0;i<64;i=i+1)

{

FMDATA = dbytes[i];

}

FMCON = EP; //erase & prog page command

Fm_stat = FMCON; //read the result status

if ((Fm_stat & 0x0F)!=0) prog_fail=1; else prog_fail=0;

return(prog_fail);

}

(This feature was not present in the original P89LPC932).

In-Circuit Programming is a method intended to allow commercial programmers to 
program and erase these devices without removing the microcontroller from the system. 
The In-Circuit Programming facility consists of a series of internal hardware resources to 
facilitate remote programming of the P89LPC932A1 through a two-wire serial interface. 
Philips has made in-circuit programming in an embedded application possible with a 
minimum of additional expense in components and circuit board area. The ICP function 
uses five pins (V

DD

, V

SS

, P0.5, P0.4, and RST). Only a small connector needs to be 

available to interface your application to an external programmer in order to use this 
feature. 

An In-Application Programming (IAP) interface is provided to allow the end user’s 
application to erase and reprogram the user code memory. In addition, erasing and 
reprogramming of user-programmable bytes including UCFG1, the Boot Status Bit, and 
the Boot Vector is supported. As shipped from the factory, the upper 512 bytes of user 
code space contains a serial In-System Programming (ISP) loader allowing for the device 
to be programmed in circuit through the serial port. This ISP boot loader will, in turn, call 
low-level routines through the same common entry point that can be used by the end-user 
application.

When the microcontroller contains a a 256 byte Boot ROM that is separate from the user’s 
Flash program memory. This Boot ROM contains routines which handle all of the low level 
details needed to erase and program the user Flash memory. A user program simply calls 
a common entry point in the Boot ROM with appropriate parameters to accomplish the 
desired operation. Boot ROM operations include operations such as erase sector, erase 
page, program page, CRC, program security bit, etc. The Boot ROM occupies the 
program memory space at the top of the address space from FF00 to FFFFh, thereby not 
conflicting with the user program memory space. This function is in addition to the IAP-Lite 
feature.