CH9121 Overview
LQFP package; 64 pins; package body 10 x10mm 4. Pins CH9121 Pin No. 2, 12, 17, 21, 29, 40, 42, 45, 63 6, 19, 28, 43, 54, 64 3, 9, 13, 18, 20, 37, 41, 44, 48 14, 15, 16, 22, 23, 24, 25, 26, 27, 34, 35, 38, 39, 47, 49, 50, 61, 62 1 Pin Name VCC33 VCC18 GND NC.
CH9121 Key Features
- Internal Ethernet MAC layer and PHY layer
- Realize bidirectional transparent transmission between serial data and network data
- Support 10/100M, full/half duplex self-adaption Ethernet interface, patible with 802.3 protocol
- Support automatic MDI/MDIX line conversion
- Support DHCP automatic access to IP address, and DNS domain name access
- Set the chip working mode, port, IP and other network parameters through upper puter software and
- Support four working modes: TCP CLIENT, TCP SERVER, UDP CLIENT and UDP SERVER
- Support up to two independent UARTs, independent transparent transmission
- Serial baud rate supports 300bps ~ 921600bps
- Serial TTL level, patible with 3.3V and 5V