W7100A-64QFN WIZnet, W7100A-64QFN Datasheet - Page 147

• Manufacturer Part Number: W7100A-64QFN
• Description: 8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W7100A-64QFN

• Rohs: yes
• Interface Type: UART

© Copyright 2011 WIZnet Co., Inc. All rights reserved.
13
8051 family.
13.1 Summary
multiplication and division are as below. It is briefly shows its performance. The W7100A with
‘wizmemcpy’ (supported by WIZnet) function is almost 9 times faster than the 80C51.
In the succeeded section shows more detail performance.
13.2 8–Bit Arithmetic Functions
13.2.1 Addition
Guide.’
MOV
MOV
ADD
This section presents the benefits gained about calculation by using W7100A over standard
The 8-bit operation cycles of the 80C51 and W7100A with addition, subtraction,

The following code performs immediate data (constant) addition to an 8-bit register.
RX = RX + #n
Note. ‘wizmemcpy’ function are built-in inside Boot ROM in W7100A. Refer to the ‘Driver

The following code performs direct addressing addition to an 8-bit register.
Rx = Rx + (dir)
Mnemonic
ADD
MUL
SUB
DIV
Immediate data
Direct addressing
Appendix:Performance Improvement about W7100A
A, Rx
A, #n
Rx, A
Sum :
E8h – EFh
F8h – FFh
80C51 cycle
Opcode
24h
36
36
96
96
Byte
1
2
1
W7100A cycle / with
80C51 Cycle
user code
12
12
12
36
12
12
12
20
wizmemcpy
ISP /
1
2
1
4
W7100A cycle / with
W7100A Cycle
wizmemcpy
Ver. 1.12
10
4
4
6
user code
FLASH /
12
4
4
4
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