Features; Benefits; Potential Issues - Freescale Semiconductor 802.15.4/Zigbee Reference Manual

1.2 Features

The following features are supported:
Upload firmware (802.15.4/Zigbee application) in Motorola S19 record format through
UART/USB. The S1 data record length must be set to 32 bytes
Auto-Detection of the PC communication interface (see
Initialize memory including stack of uploaded firmware
Initialize the system clock. Self clocked mode and MC13192 clock setup. Power save mode
supported
Run time update/change of the NVM
See the Freescale 802.15.4 MAC/PHY Software Reference Manual,
802154MPSRM/D, for a detailed description on NVM layout and values.

1.3 Benefits

Users do not have to buy expensive third party debug/development tools to get started.
Users can update the 802.15.4/Zigbee application firmware without having to build in additional
code for interfacing to the Embedded Bootloader (See
Application firmware can be updated after production by users. However, this requires that the
final product has a communication interface (UART/USB).
Users can update the 802.15.4/Zigbee application firmware even when it is malfunctioning (See
Section 2.1.3, Safe Mode
The 802.15.4/Zigbee application firmware does not have to include initializing or flash
programming code and can thereby minimize code size.
Can update any NVM data specified by the 802.15.4/Zigbee application.

1.4 Potential Issues

Uses 4 KB of flash (~6.7 % on a MC908HCS08GB60/GT60) and 93 bytes of RAM
(~2,3 % on a MC908HCS08GB60/GT60)
Extended power/boot up time (~17ms) because the Embedded Bootloader must detect the
presence of an application.
Freescale Semiconductor
NOTE
Boot).
Embedded Bootloader Reference Manual, Rev. 0.0
Section 1.1.1, Ported
Section 2.1.3, Safe Mode
Targets).
Boot).
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