ST10F276 datasheet(49/229 Pages) STMICROELECTRONICS

部件名	ST10F276

功能描述	16-bit MCU with MAC unit, 832 Kbyte Flash memory and 68 Kbyte RAM

PDF	229 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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49 / 229 page

ST10F276

Bootstrap loader

49/229

Figure 5.

ST10F276 new standard bootstrap loader program flow

Other than after a normal reset the watchdog timer is disabled, so the bootstrap loading

sequence is not time limited. Depending on the selected serial link (UART0 or CAN1), pin

TxD0 or CAN1_TxD is configured as output, so the ST10F276 can return the acknowledge

byte. Even if the internal IFLASH is enabled, a code cannot be executed from it.

START

Falling-edge on

UART0 RxD?

Falling-edge on

CAN1 RxD?

Start timer PT0

UART RxD = 0?

CAN1 RxD = 1?

PT0 > 20?

Count = 1

CAN RxD = 0?

CAN1 RxD = 1?

Count += 1

Count = 5?

Stop timer PT0

Initialize CAN

Address = FA40h

Stop timer PT0

Message received?

[Address] = MO15_data0

Address = Address + 1

Address = FAC0h?

Glitch on CAN1 RxD

Clear timer PT0

Start timer T6

UART0 RxD = 1?

Stop timer T6

Initialize UART

Send acknowledge

Address = FA40h

Byte received?

[Address] = S0RBUF

Address = Address + 1

Address = FA60h?

Yes

Jump to address FA40h

UART BOOT

CAN BOOT

UART BOOT

ST10F276 数据表(PDF) 49 Page - STMicroelectronics

ST10F276 数据表(HTML) 49 Page - STMicroelectronics

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