UM1037 datasheet(12/46 Pages) STMICROELECTRONICS

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Hardware layout and configuration

UM1037

12/46

Doc ID 18294 Rev 1

Note:

The E2PROM used on the board (ref M24C64-DFW5TP) has a specified VDD range of

1.7 V to 5.5 V therefore its behavior is not guaranteed in the VDD range 1.65 V to 1.7 V.

2.8

RS232 & IrDA

Both RS232 and IrDA communication are supported by D-type 9-pin RS232 connectors

CN7 and IrDA transceiver U6 which is connected to the USART of the STM8L152M8T6 on

STM8L1528-EVAL evaluation board. The Bootloader_RESET signal is added to the RS232

connector for ISP support.

2.9

Motor control

The STM8L1528-EVAL evaluation board supports three-phase brushless motor control via

a 34-pin connector CN1, which provides all required control and feedback signals to and

from a motor power-driving board. Available signals on this connector include emergency

stop, motor speed, 3 phase motor current, bus voltage, heatsink temperature coming from

the motor driving board and 6 channels of PWM control signal going to the motor driving

circuit.

Table 6.

EEPROM related jumper and solder bridge

Jumper

Description

JP6

The I2C interface EEPROM U8 is in write protection mode when JP6 is not

fitted.

Default setting: Fitted

SB10

The device address of EEPROM can be changed by setting of SB10, the

address is 0xA0 when SB10 is open while the address is 0xA2 when SB10

is closed.

Default setting: Open

Table 7.

RS232 & IrDA related jumpers

Jumper

Description

Setting

JP5

USART2_RX is connected to RS-232 transceiver and RS-232 communication

is enabled when JP5 is set as shown to the right (default setting).

USART2_RX is connected to IrDA transceiver and IrDA communication is

enabled when JP5 is set as shown to the right.

JP11

PH4 is connected to RS232 or IrDA when JP11 is set as shown to the right

(Default setting):

PH4 is connected to IDD current measurement circuit as IDD_CNT_EN signal

when JP11 is set as shown to the right:

JP12

PH5 is connected to RS232 and IrDA when JP12 is set as shown to the right

(Default setting):

PH5 is connected to IDD current measurement circuit as LP_WAKEUP signal

when JP12 is set as shown to the right:

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