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EBT3002 Ethernet Chip Serial Port TTL Level to RJ45 Modbus TCP to RTU MQTT Low Power Modbus Gateway
[Introduction]：EBT3002 is an Ethernet serial server chip that realizes 8-way serial (TTL) data⇌Ethernet data conversion; it has a variety of Modbus gateway modes and TCP/DUP/MQTT/HTTP IoT gateway modes, which can meet the needs of various serial devices/PLCs Networking function. The chip adopts LQFP100 package, which is convenient for users to integrate.
| No. | Definition | Description |
| 1 | WDT | Just leave it in the air |
| 2-5,7,23-24,29-32,35-36,38, | RESERVED | Just leave it in the air |
| 59-60,77,90-91,95-98 | ||
| 6 | VBAT | External 3.3V |
| 8 | PC14/0SC32IN | Low-speed external 32.768K crystal oscillator |
| 9 | PC15/OSC320UT | Low-speed external 32.768K fret vibration |
| 10 | VSS_5 | grounding |
| 11 | VDD_5 | External 3.3V |
| 12 | OSC_IN | High-speed external 8M crystal oscillator |
| 13 | OSC_OUT | High-speed external 8M crystal oscillator |
| 14 | NRST | Chip reset pin, effective when pulled low |
| 15 | TXD6 | Serial port 6 sending pin |
| 16 | RXD6 | Serial port 6 receiving pin |
| 17 | TXD7 | Serial port 7 sending pin |
| 18 | RXD7 | Serial port 7 receiving pin |
| 19 | VSSA | grounding |
| 20 | VREF- | grounding |
| 21 | VREF+ | External 3.3V |
| 22 | VDDA | External 3.3V |
| 25 | TXD2 | Serial port 2 sending pin |
| 26 | RXD2 | Receive pin with port 2 |
| 27 | VSS_4 | grounding |
| 28 | VDD_4 | External 3.3V |
| 33 | TXD8 | Serial port 8 sending pin |
| 34 | RXD8 | Serial port 8 receiving pins |
| 37 | BOOT1 | Pull down by default |
| 39 | D-LED-8 | Serial port 8 data sending and receiving indication. When the network cable is not detected after power-on, it is pulled low by default. When there is data sending and receiving, follow the 100mS cycle, 50mS low-level output pulse, and output high-level when there is no data |
| 40 | D-LED-7 | Serial port 7 data sending and receiving indication. When the network cable is not detected after power-on, it is pulled low by default. When there is data sending and receiving, follow the 10OmS cycle, 5OmS low-level output pulse, and output high-level when there is no data |
| 41 | D-LED-6 | Serial port 6 data sending and receiving instructions, when the network cable is not detected after power-on, it is pulled low by default, when there is data sending and receiving, it will output pulses at a low level of 5OmS in a period of 100mS, and output a high level when there is no data |
| 42 | D-LED-5 | Serial port 5 data sending and receiving indication. When the network cable is not detected after power-on, it will be pulled low by default. When there is data sending and receiving, it will output pulses at a low level of 50mS in a period of 100mS, and output a high level when there is no data. |
| 43 | D-LED-4 | Serial port 4 data sending and receiving indication, when the network cable is not detected after power-on, it is pulled low by default, when there is data sending and receiving, follow the 100mS cycle, 5OmS low-level output pulse, and output high-level when there is no data |
| 44 | DHLED-3 | Serial port 3 data sending and receiving indication, when the network cable is not detected after power-on, it is pulled low by default, when there is data sending and receiving, follow the 100mS cycle, 50mS low-level output pulse, and output high-level when there is no data |
| 45 | D-LED-2 | Serial port 2 data sending and receiving indication, when the network cable is not detected after power-on, it is pulled low by default, when there is data sending and receiving, follow the 10OmS cycle, 50mS low-level output pulse, when there is no data, it will output high-level |
| 46 | D-LED-1 | Serial port 1 data sending and receiving indication. When the network cable is not detected after power-on, it is pulled low by default. When there is data sending and receiving, follow the 10OmS cycle, 500mS low-level output pulse, and output high-level when there is no data |
| 47 | TXD3 | Serial port 3 sending pin |
| 48 | RXD3 | Serial port 3 receiving pin |
| 49 | VSS_I | grounding |
| 50 | VI0_1 | External 3.3V |
| 51 | 485-EN-4 | Serial port 4 sending indication (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 52 | 485-EN-3 | Serial port 3 sending instruction (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 53 | 485-EN-2 | Serial port 2 sending indication (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 54 | 485-EN-1 | Serial port 1 sending indication (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 55 | 485-EN-8 | Serial port 8 sending instruction (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 56 | 485-EN-7 | Serial port 7 sending instruction (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 57 | 485-EN-6 | Serial port 6 sending indication (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 58 | 485-EN-5 | Serial port 5 sending instruction (can be used as 485 sending enable pin), pull high during sending, pull low when idle |
| 61 | SPD_LED | Ethernet interface data sending and receiving indicator |
| 62 | LINK_LED | Ethernet interface PHY connection status indicator |
| 63 | ETH-RXP | ETH-RXP |
| 64 | ETH-RXN | ETH-RXN |
| 65 | ETH-TXP | ETH-TXP |
| 66 | ETH-TXN | ETH-TXN |
| 67 | Reload | 1. Pull high by default |
| 2. Ground first and then power on, the module enters the boot mode | ||
| 3. When the app is running, press and hold for 5 seconds to restore factory settings | ||
| 68 | TXD1 | Serial port 1 sending pin |
| 69 | RXD1 | Serial port 2 receiving pin |
| 70 | USB1DM | It is used for factory programming, if not used, leave it empty |
| 71 | USB1DP | It is used for factory programming, if not used, leave it empty |
| 72 | SWD10 | It is used for factory programming, if not used, leave it empty |
| 73 | NC | It is used for factory programming, if not used, leave it empty |
| 74 | VSS_2 | grounding |
| 75 | VDD_2 | External 3.3V |
| 76 | SWCLK | It is used for factory programming, if not used, leave it empty |
| 77 | RESERVED | System status indication, output low level when the network cable is not detected after power-on, output a 2S cycle pulse after the network cable is detected, pull out the network cable during operation and output a cycle of 1 second, a 100mS low-level pulse |
| 78 | TXD4 | Serial port 4 sending pin |
| 79 | RXD4 | Serial port 4 receiving pin |
| 80 | TXD5 | Serial port 5 sending pin |
| 81 | L-LED1 | Serial port 1 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 82 | L-LED2 | Serial port 2 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 83 | RXD5 | Serial port 5 receiving pin |
| 84 | L-LED3 | Serial port 3 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 85 | L-LED4 | Serial port 4 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 86 | L-LED5 | Serial port 5 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 87 | L-LED6 | Serial port 6 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 88 | L-LED7 | Serial port 7 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 89 | L-LED8 | Serial port 8 network link status indicator pin, output low level when the network cable is not detected after power-on, output high level after detecting the network cable, output low level when there is a network connection |
| 92 | USB2DM | It is used for factory programming, if not used, leave it empty |
| 93 | USB2DP | It is used for factory programming, if not used, leave it empty |
| 94 | B00TO | For upgrade use, pull down and power on to enter BOOT mode, if not in use, leave it floating |
| 99 | VSS_3 | grounding |
| 100 | VI0_3 | External 3.3V |