W7100A WIZnet, W7100A Datasheet - Page 22

• Manufacturer Part Number: W7100A
• Description: 8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W7100A

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 255 B
• Data Ram Size: 64 KB
• On-chip Adc: No
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 80 C
• Package / Case: LQFP-100
• Mounting Style: SMD/SMT
• Interface Type: UART
• Program Memory Type: Flash

© Copyright 2011 WIZnet Co., Inc. All rights reserved.
4. Locate the TXOP and TXON signal as near as possible.
5. Locate the RX and TX signal pairs far from noisy signals such as bias resistor or
6. Keep regular between TX/RX signal pair.
1.4.2.9 Network Indicator LED
Pin name
SPDLED
FDXLED
COLLED
RXLED
TXLED
LINKLED
1.4.2.10
Pin
name
VCC3A3
VCC3V3
VCC1A8
crystal.
For more details, refer to “W5100 Layout Guide.pdf.”
21,
38,
73,
87,
100
54,
100pin
58, 75
100pin
Pin number
Pin number
45
46
47
48
49
50
Power Supply Signal
37, 49
16, 58
34, 42
64pin
64pin
27
28
-
-
-
-
Power
Power
Power
I/O
I/O
O
O
O
O
O
O
Pu/Pd
Pu/
Pd
-
-
-
-
-
-
-
-
-
Description
Analog 3.3V power supply
Be sure to connect a 10uF tantalum capacitor
between VCC3A3 and GNDA in order to prevent
power compensation
Digital 3.3V power supply
A 0.1uF decoupling capacitor should be connected
between each pair of VCC and GND. A 1uH ferrite
bead should be used to separate the VCC3V3 and
VCC3A3
Analog 1.8V power supply
Description
Link speed LED
Low: 100Mbps
High: 10Mbps
Full duplex LED
Low: Full-duplex
High: Half-duplex
Collision LED
Low: Collision detected (only half-duplex)
Receive activity LED
Low: Receive signal detected on RXIP/RXIN
Transmit activity LED
Low: Transmit signal detected on TXOP/TXON
Link LED
Low: Link (10/100M) is detected
Ver. 1.12
22