UM1018 datasheet(10/42 Pages) STMICROELECTRONICS

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Hardware and layout

UM01018

10/42

Doc ID 18141 Rev 2

2.5

Boot option

The STM32L152-EVAL evaluation board is able to boot from:

●

Embedded user Flash

●

System memory with boot loader for ISP

●

Embedded SRAM for debugging

The boot option is configured by setting switch SW1 (BOOT0) and SW2 (BOOT1).

BOOT0 can also be configured via RS-232 connector CN2.

2.6

LCD glass module

An LCD glass module, U20, with 8-digit liquid crystal display is mounted on the

STM32L152-EVAL evaluation board and is connected to the LCD controller of the

STM32L152VBT6.

Table 4.

Boot related switches

Switch

Boot from

Setting

SW1 and SW2

STM32L152-EVAL boot from embedded user Flash when SW1

is set as shown. SW2 is not relevant in this configuration (default

setting).

STM32L152-EVAL boot from embedded SRAM when SW1 and

SW2 are set as shown.

STM32L152-EVAL boot from system memory when SW1 and

SW2 are set as shown.

Table 5.

Boot0 related jumper JP6

Jumper

Description

JP6

Bootloader_BOOT0 is managed by pin 6 of CN2 (RS-232 DSR signal) when JP6

is closed. This configuration is used for boot loader application only.

Default setting: Not fitted.

SW1

SW2

SW1

SW2

Table 6.

LCD glass related jumpers

Jumper

Description

Setting

JP7

PC10 is connected to LCD glass as SEG40 when JP7 is set as shown

(default setting).

PC10 is connected to USART3_TX when JP7 is set as shown.

JP8

PC11 is connected to LCD glass as SEG41 when JP8 is set as shown

(default setting).

PC11 is connected to USART3_RX when JP8 is set as shown.

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