ST ARMIC30, Руководство пользователя

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UM0193 Hardware
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Note: 1 If using a resistor assembly (hardware option), the correct MCU signal must be set as an
input!
2 Do not assemble both resistors as this will short-circuit the supply voltage!
1.4 SPI interface
A 10-pin connector (J18) provides the Serial Peripheral Interface (SPI) through the BSPI0
channel of the STR730F microcontroller as shown in
Figure 7 .
Connector J18 also provides additional general purpose signals that are primarily used as
Watchdog (WD) and Slave Chip Select (SSn) lines.
Figure 7. SPI connector pinout
Table 4. CAN slew rate settings
Speed Slew Rate (V/µs) MCU SIgnal Signal Level Resistor
Low 5 to 20
P2.0
High R32
High 20 to 50 Low R34
Table 5. SPI Connections
J18 Pin Signal STR730F MCU Peripheral
1 GND
2 +5V DC
3 MOSI (Master Output/Slave Input) Port 6.12 BSPI0
4 MISO (Master Input/Slave Output) Port 6.11 BSPI0
5 SCK (Serial Clock) Port 6.13 BSPI0
6 WD Port 0.12 GPIO
7 SS0 (Slave Select 0) Port 6.14 BSPI0
8 SS1 (Slave Select 1) Port 0.13 GPIO
9 SS2 (Slave Select 2) Port 1.12 GPIO
10 SS3 (Slave Select 3) Port 1.13 GPIO
1
2
3
4
5
6
7
8
9
10