ST10F276-6QR3 STMicroelectronics, ST10F276-6QR3 Datasheet - Page 50

• Manufacturer Part Number: ST10F276-6QR3
• Description: MCU 16BIT 832K FLASH 144-PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F276-6QR3

• 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: -

Bootstrap loader
5.2.3
5.2.4
Note:
50/231
Booting steps
As
four steps:
1.
2.
3.
4.
Figure 6.
Hardware to activate BSL
The hardware that activates the BSL during reset may be a simple pull-down resistor on
P0L.4 for systems that use this feature at every hardware reset. For systems that use the
bootstrap loader only temporarily, it may be preferable to use a switchable solution (via
jumper or an external signal).
CAN alternate function on Port4 lines is not activated if the user has selected eight address
segments (Port4 pins have three functions: I/O port, address segment and CAN). Boot via
CAN requires that four or less address segments are selected.
Figure 6
The ST10F276E is reset with P0L.4 low.
The internal new bootstrap code runs on the ST10 and a first level user code is
downloaded from the external device, via the selected serial link (UART0 or CAN1).
The bootstrap code is contained in the ST10F276E Test-Flash and is automatically run
when ST10F276E is reset with P0L.4 low. After loading a preselected number of bytes,
ST10F276E begins executing the downloaded program.
The first level user code runs on ST10F276E. Typically, this first level user code is
another loader that downloads the application software into the ST10F276E.
The loaded application software is now running.
Loading first level user code
Loading the application
Entering bootstrap
and exiting BSL
shows, booting ST10F276E with the boot loader code occurs in a minimum of
Booting steps for ST10F276E
Step 1
Step 2
Step 3
Step 4
External device
External device
External device
External device
First level user code
Application
Download
Download
from DPRAM @ FA40h
Run application code
Run bootstrap code
Run first level code
from Test-Flash
ST10F276E
ST10F276E
ST10F276E
ST10F276E
ST10F276E