C8051F120DK Silicon Laboratories Inc, C8051F120DK Datasheet - Page 169
C8051F120DK
Manufacturer Part Number
C8051F120DK
Description
DEVKIT-F120/21/22/23/24/25/26/27
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F120DK.pdf
(350 pages)
Specifications of C8051F120DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F12x and C8051F13x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F120
Silicon Family Name
C8051F12x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F120, 121, 122, 123, 124, 125, 126, 127
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1224
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F120DK
Manufacturer:
SiliconL
Quantity:
4
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- Download datasheet (2Mb)
12.7.2. Multiply Only Example
The example below implements the equation:
MOV
MOV
MOV
MOV
MOV
NOP
NOP
NOP
12.7.3. MAC0 Accumulator Shift Example
The example below shifts the MAC0 accumulator left one bit, and then right two bits:
MOV
MOV
MOV
MOV
MOV
MOV
NOP
NOP
MOV
MOV
NOP
NOP
MAC0CF, #01h
MAC0AH, #12h
MAC0AL, #34h
MAC0BH, #FEh
MAC0BL, #DCh
MAC0OVR, #40h
MAC0ACC3, #88h
MAC0ACC2, #44h
MAC0ACC1, #22h
MAC0ACC0, #11h
MAC0CF, #20h
MAC0CF, #30h
MAC0CF, #30h
; Use integer numbers, and multiply only mode (add to zero)
; Load MAC0A register with 1234 hex = 4660 decimal
; Load MAC0B register with FEDC hex = -292 decimal
; This line initiates the Multiply operation
; After this instruction, the Accumulator should be equal to
; FFFFEB3CB0 hex = -1360720 decimal. The MAC0STA register should
; be 0x01, indicating a negative result.
; After this instruction, the Rounding register is updated
; The next few instructions load the accumulator with the value
; 4088442211 Hex.
; Initiate a Left-shift
; After this instruction, the accumulator should be 0x8110884422
; The rounding register is updated after this instruction
; Initiate a Right-shift
; Initiate a second Right-shift
; After this instruction, the accumulator should be 0xE044221108
; The rounding register is updated after this instruction
4660
–
Rev. 1.4
292
=
–
C8051F120/1/2/3/4/5/6/7
1360720
C8051F130/1/2/3
169
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