ST10F276-6Q3 STMicroelectronics, ST10F276-6Q3 Datasheet - Page 67

• Manufacturer Part Number: ST10F276-6Q3
• Description: MCU 16BIT 832K FLASH 144-PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F276-6Q3

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 64MHz
• Connectivity: ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 832KB (832K x 8)
• Program Memory Type: FLASH
• Ram Size: 68K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 144-MQFP, 144-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

ST10F276E
5.6.5
Note:
5.6.6
Note:
5.6.7
5.6.8
Even if the internal IFLASH is enabled, a code cannot be executed from it.
As the XFlash is needed, XPERCON register is configured by the ABM 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:
1.
2.
The changing of the XPERCON value cannot be executed from the XFlash because the
XFlash is disabled by the clearing of XPEN bit in SYSCON.
Watchdog
As for standard boot, the Watchdog timer remains disabled during Alternate Boot Mode. In
case a Watchdog reset occurs, a software reset is generated.
See note from
Exiting alternate boot mode
Once the ABM mode is entered, it can be exited only with a software or hardware reset.
See note from
Alternate boot user software
If the rules described previously are respected (that is, mapping of variables, disabling of
interrupts, exit conditions, predefined vectors in Block 0 of Bank 2, Watchdog usage), then
users can write the software they want to execute in this mode starting from 09’0000h.
User/alternate mode signature integrity check
The behavior of the Alternate Boot Mode is based on the computing of a signature between
the content of two memory locations and a comparison with a reference signature. This
requires that users who use Alternate Boot have reserved and programmed the Flash
memory locations according to:
Copy in DPRAM a function that will
a)
b)
c)
d)
Call the function from XFlash
User mode signature
Alternate mode signature
disable the XPeripherals by clearing XPEN in SYSCON register,
enable the needed XPeripherals by writing the correct value in XPERCON
register,
set XPEN bit in SYSCON,
return to calling address.
00'0000h: memory address of operand0 for the signature computing
00’1FFCh: memory address of operand1 for the signature computing
00’1FFEh: memory address for the signature reference
09'0000h: memory address of operand0 for the signature computing
09’1FFCh: memory address of operand1 for the signature computing
09’1FFEh: memory address for the signature reference
Section 5.2.7
Section 5.2.7
concerning software reset.
concerning software reset.
Bootstrap loader
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