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WCH CH394Q product image
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WCH CH394Q

Manufacturer
WCHAsian Brands
MPN
CH394Q
LCSC Part #
C46061830
Packaging
LQFP-48(7x7)
Customer #
Key Attributes
Ethernet protocol stack chip
Datasheetpdf iconWCH CH394Q
In-Stock: 1,736
1,736 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: PieceSamples: 2
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 2.8706$ 2.87
10+$ 2.4379$ 24.38
30+$ 2.1684$ 65.05
250+$ 1.8909$ 472.73
500+$ 1.7651$ 882.55
1,000+$ 1.7112$ 1711.20
Standard Packaging250/Full Tray
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Interface/Interface Controllers
ManufacturerWCH
PackagingLQFP-48(7x7)
Voltage - Supply3.3V;2.5V;1.8V
Integrated PHYYes
ProtocolSPI
Memory Space32KB
Ethernet Speed Standards10BASE-T;100BASE-TX
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Introduction

AI Translation

CH394 is an Ethernet protocol stack management chip designed for microcontroller systems to enable Ethernet communication. The chip integrates a 10/100M Ethernet MAC layer and PHY transceiver, is fully compliant with IEEE 802.3, and embeds firmware for Ethernet protocol stacks including IP, ARP, ICMP, IGMP, UDP, and TCP. Microcontroller systems can easily perform network communication via CH394. CH394 supports Wake-on-LAN mode and power-down mode. CH394Q offers two operating modes: IPv4 mode and IPv6 mode. The default mode is IPv4 mode, supporting multiple network protocols including IPv4, ARP, ICMP, IGMP, UDP, and TCP; IPv6 mode additionally supports IPv6, ICMPv6, IPRAW4, and IPRAW6. CH394Q provides an SPI interface, while CH394L provides both an SPI interface and an 8-bit passive parallel interface. Controllers such as microcontrollers, DSPs, MCUs, or MPUs can control CH394Q for Ethernet communication via the SPI interface, or control CH394L for Ethernet communication via either the SPI interface or the 8-bit parallel interface.

Features

AI Translation
  • Integrated Ethernet MAC and PHY transceiver
  • 10/100M speed, full/half-duplex auto-negotiation, IEEE802.3 compliant
  • MDI/MDIX auto-crossover
  • I/O supports 3.3V, 2.5V, 1.8V, 1.2V power supply, compatible with multiple MCU voltage standards
  • Built-in 50Ω impedance matching resistors and capacitors for 25MHz crystal oscillator, simplified peripheral circuitry
  • Built-in TCP/IP stack, supports IPv4, ARP, ICMP, IGMP, UDP, TCP
  • CH394Q supports IPv4 and IPv6 modes, defaulting to IPv4 mode
  • CH394Q supports 8 sockets; CH394L supports 4 sockets, simultaneous TX/RX
  • MACRAW and IPRAW mode support
  • SPI device interface up to 62MHz (SPI mode 0 or 3), MSB first
  • CH394L provides high-speed 8-bit passive parallel interface for MCU parallel data bus
  • Network wake-up and power-down mode support
  • LED status indication (link, activity, 10/100M, full/half-duplex, etc.)
  • Built-in 32K RAM for Ethernet TX/RX; per-socket TX/RX buffer freely configurable
  • LQFP48 lead-free package