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UM1657 数据表(PDF) 9 Page - STMicroelectronics |
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UM1657 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 48 page ![]() DocID025094 Rev 1 9/48 UM1657 Hardware description 48 1.1.3 Power The board can be powered either by the mini USB connector CN1 (A in Figure 1) or by 2 AAA batteries. To power the board through USB bus, jumper JP1 must be in position 1-2, as in Figure 1 (B). To power the board by batteries, 2 AAA batteries must be present in the Pin name Pin n° Board function LEDs DB connector Buttons / Joystick Accelerome ter Temperat ure sensor USB JTAG Ext. conn. PA8 41 JOY_LEFT PA9 42 JOY_CEN TER PA10 43 JOY_UP PA11 44 USB_D M PA12 45 USB_D P PA13 46 JTMS 16 VSS_2 47 VDD_2 48 PA14 49 JTCK 14 PA15 50 JTDI 12 PC10 51 DB_IO3_IRQ* PC11 52 DB_PIN1 PC12 53 DB_PIN2 PD2 54 LED3 PB3 55 JTDO 10 PB4 56 JNTRS T 8 PB5 57 TSEN_IN T PB6 58 I2C1_SCL PB7 59 I2C1_SDA BOOT0 60 PB8 61 4 PB9 62 6 VSS_3 63 VDD_3 64 1. These lines are also available on the test point row. Table 1. MCU pin description versus board function (continued) |
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