W7100A WIZnet, W7100A Datasheet - Page 149

• 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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13.2.2 Subtraction
SUBB
SUBB
SUBB
MOV
MOV
MOV
MOV
MOV
MOV
The following code performs immediate data (constant) subtraction from an 8-bit register.
Rx = Rx - #n
The following code performs direct addressing subtraction from an 8-bit register.
Rx = Rx – (dir)
The following code performs indirect addressing subtraction from an 8-bit register.
Rx = Rx – (@Ry)
The following code performs an 8-bit register from register subtraction.




Mnemonic
Mnemonic
Mnemonic
Immediate data
Direct addressing
Indirect addressing subtraction
Register addressing subtraction
A, @Ry
A, dir
A, Rx
A, #n
A, Rx
A, Rx
Rx, A
Rx, A
Rx, A
Sum :
Sum :
Sum :
E8h – EFh
F8h – FFh
E8h – EFh
F8h – FFh
E8h – EFh
26h – 27h
F8h – FFh
Opcode
Opcode
Opcode
24h
25h
Byte
Byte
Byte
1
2
1
1
2
1
1
1
1
80C51 Cycle
80C51 Cycle
80C51 Cycle
12
12
12
36
12
12
12
36
12
12
12
36
wizmemcpy
wizmemcpy
wizmemcpy
ISP /
ISP /
ISP /
1
2
1
4
1
2
1
4
1
2
1
4
W7100A Cycle
W7100A Cycle
W7100A Cycle
Ver. 1.12
user code
user code
user code
FLASH /
FLASH /
FLASH /
12
12
12
4
4
4
4
4
4
4
4
4
149