ST10F276 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST10F276' PDF : 229 Pages View PDF
Bootstrap loader
ST10F276
5.5
5.5.1
Comparing the old and the new bootstrap loader
The following tables summarizes the differences between the old ST10 (boot via UART only)
bootstrap and the new one (boot via UART or CAN).
Table 33. Software topics summary
Old bootstrap loader
New bootstrap loader
Comments
Uses only 32 bytes in Dual-
Port RAM from 00’FA40h
Uses up to 128 bytes in
Dual-Port RAM from
00’FA40h
For compatibility between boot via UART
and boot via CAN1, please avoid loading
the application software in the
00’FA60h/00’FABFh range.
Loads 32 bytes from UART
Loads 32 bytes from UART
(boot via UART mode)
Same files can be used for boot via
UART.
User selected Xperipherals
can be enabled during boot
(Step 3 or Step 4).
Xperipherals selection is
fixed.
User can change the Xperipherals
selections through a specific code.
Software aspects
As the CAN1 is needed, XPERCON register is configured by the bootstrap loader code and
bit XPEN of SYSCON is set. However, as long as the EINIT instruction is not executed (and
it is not in the bootstrap loader code), the settings can be modified. To do this, perform the
following steps:
● DIsable the XPeripherals by clearing XPEN in SYSCON register. Attention: If this part
of the code is located in XRAM, it will be disabled.
● Enable the needed XPeripherals by writing the correct value in XPERCON register.
● Set XPEN bit in SYSCON.
64/229
Share Link: 
