W7100A WIZnet, W7100A Datasheet - Page 12

• 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

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1.3
described as follows:
contains accumulator (ACC), Program Status Word (PSW), B registers, and related logics such
as arithmetic unit, logic unit, multiplier, and divider.
and related logic. User defined external devices can be quickly accessed (read, write,
modified) using all direct addressing mode instructions.
1.3.1 ALU (Arithmetic Logic Unit)
instruction mnemonics and binary compatibility. W7100A incorporates many great
architectural enhancements which enable the W7100A MCU to execute instructions with high
speed.
arithmetic logic unit (ALU), an ACC (0xE0) register, a B (0xF0) register and a PSW (0xD0)
register
The W7100A internal block diagram is shown in the Figure 1.1. Details of block functions are
ALU – Performs arithmetic and logic operations during execution of an instruction. It
SFR – Controls the access of special registers. It contains standard and user defined registers
W7100A is fully compatible with the standard 8051 microcontroller, and maintains all
The ALU of W7100A MCU performs extensive data manipulation and is comprised of the 8-bit
W7100A Block Diagram & Features
Figure 1.1 W7100A Block Diagram
Ver. 1.12
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