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AN4127 Datasheet(PDF) 5 Page - STMicroelectronics |
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AN4127 Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 27 page AN4127 I/O connections Doc ID 023304 Rev 1 5/27 4 I/O connections 4.1 PAD description Other than the USB plug, some pads are also available. In fact PAD1 to PAD13 make the SPBT2632C2A.AT2 pins available to the user. Table 2 gives a description of these pads. Figure 4. Front side connection Figure 5. Bottom side connection 1 3 4 13 PAD 1 to 3 PAD 4 to 13 LED1 LED3 LED2 AM12669V1 J1 JTAG connector AM12670V1 Table 2. Pad connections Description PAD 1 BOOT0 - Boot pin used for firmware downloading - used for testing purposes 2 3.3 V (module – LED1 is connected to this PAD) 3 RESETN - reset - connected in parallel to onboard reset switch 4GND 5 +5 V (USB) 6 LPO (external 32.768 kHz frequency input to allow deep sleep and sniff mode Bluetooth module functional states) 7 GPIO07 – general purpose I/O 8 GPIO01 – general purpose I/O (1) (LED2 is connected to this GPIO) 9 GPIO02 – general purpose I/O (1) 10 GPIO03 – general purpose I/O (1) 11 GPIO04 – general purpose I/O (1) (LED3 is connected to this GPIO) 12 GPIO06 – general purpose I/O (1) 13 GPIO05 – general purpose I/O |
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