ST EVALSTPM32, Руководство пользователя, Страница: 4 / 15

2 EVALSTPM34, EVALSTPM33, EVALSTPM32 board
2.1 Board description
2.1.1 Hardware configuration
Table 2. EVALSTPM3x evaluation board setting and configuration terminals
Parameter Value
J7 3.3 V external DC supply
J4 Device enable and reset
J5 Digital output pins
J6 SPI connector to the USB programmer/reader
J1
On-board USB connector for UART communication interface
(DB9 female connector for RS232 port on board version 1
only)
J2 UART test point signals
J3 RS232 enable (board version 1 only)
J11
(1)
V
REF
jumper
SW1 DIP switches for SPI/UART peripheral selection
L1 Primary voltage
L2
(2) Secondary voltage
I1 Primary current
I2 Secondary current
1. For the EVALSTPM34 and the EVALSTPM33 board only.
2. For the EVALSTPM34 board only.
2.1.2 Power supply
The board does not contain a power supply. V
CC
= 3.3 V DC supply should be provided externally, by J7
connector. If the board is interfaced to PC by the STEVAL-IPE023V1 isolated dongle, it provides the board with
supply. Since UART section is isolated, to use either the on-board USB-TO-UART or the RS-232 connectors, 3.3
V DC supply must be provided through J7 connector, anyway.
2.1.3 Enable and reset
The STPM3x enable pin should be shorted to VCC by keeping J4 jumper in EN position. To reset the device, this
jumper has to be in OFF position (GND).
UM1748
EVALSTPM34, EVALSTPM33, EVALSTPM32 board
UM1748 - Rev 3
page 4/15