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データシートサーチシステム |
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データシートサーチシステム |
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BM78 データシート(PDF) 12 Page - Microchip Technology |
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BM78 データシート(HTML) 12 Page - Microchip Technology |
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12 / 60 page  BM78 DS60001380B-Page 12 2016-2019 Microchip Technology Inc. 2.3 Status Indication I/O Pins The I/O pins, P1_5 and P0_4, are status indicator pins: STATUS_IND_1 and STATUS_IND_2. Both the pins provide status indication to host MCUs. Table 2-4 pro- vides status indication of the P1_5 and P0_4 pins. UART RX indication When assigned to a pin, this function enables communication with the UART when the module is in Low-Power mode. When not in Low-Power mode, the module runs on a 16 MHz clock. If the user intends to provide data or com- mands through UART in the Low-Power mode, then the UART_RX_IND pin needs to be pulled low and the user has to wait at least 5 ms before sending the data. Pulling the UART_RX_IND pin low allows the module to operate the 16 MHz clock and to enable UART. Pairing key When assigned to a pin, this function can be used to force the module to enter Standby mode. The pin needs to be pulled down for at least 160 ms. Inquiry control When assigned to a pin, this function forces the module to enter Inquiry mode (Bluetooth Classic). The pin must be pulled low for at least 240 ms for the device to enter Inquiry mode. Profile_IND When assigned to a pin, this function can be used to indicate whether current connection is in Basic Data Rate (BDR)/Enhanced Data Rate (EDR) (Bluetooth Classic), or in BLE. If the Profile_IND pin is high, then the current connection is BDR/EDR connection. If low, then the current connection is a BLE connection. This pin is valid only for Link state. TABLE 2-3: CONFIGURABLE FUNCTIONS AND DESCRIPTIONS Function Name Description TABLE 2-4: STATUS INDICATION P1_5/STATUS_IND_1 P0_4/STATUS_IND_2 Indication H H Power-on (default setting) and Deep-sleep state. HH status should be stable for at least 500 ms H L Access state L H Link state (UART data transmitting) L L Link state (no UART data transmitted) Legend: L = Low H = High |
同様の部品番号 - BM78_V01 |
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同様の説明 - BM78_V01 |
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