P89LPC920FDH PHILIPS [NXP Semiconductors], P89LPC920FDH Datasheet - Page 33

• Manufacturer Part Number: P89LPC920FDH
• Description: 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 12285
Product data
8.25 User configuration bytes
8.26 User sector security bytes
In-System Programming (ISP):
removing the microcontroller from the system. The In-System Programming facility
consists of a series of internal hardware resources coupled with internal firmware to
facilitate remote programming of the P89LPC920/921/922 through the serial port.
This firmware is provided by Philips and embedded within each P89LPC920/921/922
device. The Philips In-System Programming facility has made in-system
programming in an embedded application possible with a minimum of additional
expense in components and circuit board area. The ISP function uses five pins (V
V
your application to an external circuit in order to use this feature. Please see the
P89LPC920/921/922 User’s Manual for additional details.
In-Application Programming (IAP):
are available for use by an application program to permit selective erasing and
programming of Flash sectors, pages, security bits, configuration bytes, and device
identification. All calls are made through a common interface, PGM_MTP. The
programming functions are selected by setting up the microcontroller’s registers
before making a call to PGM_MTP at FF00H. Please see the P89LPC920/921/922
User’s Manual for additional details.
In-Circuit Programming (ICP):
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 P89LPC920/921/922 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
to interface your application to an external programmer in order to use this feature.
A number of user-configurable features of the P89LPC920/921/922 must be defined
at power-up and therefore cannot be set by the program after start of execution.
These features are configured through the use of the Flash byte UCFG1. Please see
the P89LPC920/921/922 User’s Manual for additional details.
There are two/four/eight User Sector Security Bytes, each corresponding to one
sector. Please see the P89LPC920/921/922 User’s Manual for additional details.
SS
, TXD, RXD, and RST). Only a small connector needs to be available to interface
DD
, V
SS
, P0.5, P0.4, and RST). Only a small connector needs to be available
Rev. 06 — 21 November 2003
In-Circuit Programming is a method intended to
8-bit microcontrollers with two-clock 80C51 core
In-System Programming is performed without
Several In-Application Programming (IAP) calls
P89LPC920/921/922
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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DD
,