ST10F276-6QR3 STMicroelectronics, ST10F276-6QR3 Datasheet - Page 54

• 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
5.3.2
54/231
Figure 9.
1. BSL initialization time, > 1ms @ f
2. Zero byte (1 start bit, eight ‘0’ data bits, 1 stop bit), sent by host
3. Acknowledge byte, sent by ST10F276E
4. 32 bytes of code / data, sent by host
5. Caution: TxD0 is only driven a certain time after reception of the zero byte (1.3ms @ f
6. Internal Boot ROM / Test-Flash
Entering bootstrap via UART
The ST10F276E enters BSL mode if pin P0L.4 is sampled low at the end of a hardware
reset. In this case, the built-in bootstrap loader is activated independently of the selected
bus mode. The bootstrap loader code is stored in a special Test-Flash; no part of the
standard mask ROM or Flash memory area is required for this.
After entering BSL mode and the respective initialization, the ST10F276E scans the RxD0
line to receive a zero byte, that is, 1 start bit, eight ‘0’ data bits and 1 stop bit. From the
duration of this zero byte, it calculates the corresponding baud rate factor with respect to the
current CPU clock, initializes the serial interface ASC0 accordingly and switches pin TxD0 to
output. Using this baud rate, an acknowledge byte is returned to the host that provides the
loaded data.
The acknowledge byte is D5h for the ST10F276E.
CSP:IP
RSTIN
P0L.4
RxD0
TxD0
UART bootstrap loader sequence
(1)
CPU
(6)
(2)
= 40 MHz
Int. Boot ROM / Test-Flash BSL-routine
(5)
(3)
(4)
user software
32 bytes
CPU
= 40 MHz).
ST10F276E