C8051F310-TB Silicon Laboratories Inc, C8051F310-TB Datasheet - Page 27
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C8051F310-TB
Manufacturer Part Number
C8051F310-TB
Description
BOARD PROTOTYPING W/C8051F310
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F310-TB
Contents
Board
Processor To Be Evaluated
C8051F31x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F310
Silicon Family Name
C8051F31x
Kit Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F310
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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1.1.
1.1.1. Fully 8051 Compatible
The C8051F31x family utilizes Silicon Laboratories' proprietary CIP-51 microcontroller core. The CIP-51 is
fully compatible with the MCS-51™ instruction set; standard 803x/805x assemblers and compilers can be
used to develop software. The CIP-51 core offers all the peripherals included with a standard 8052, includ-
ing four 16-bit counter/timers, a full-duplex UART with extended baud rate configuration, an enhanced SPI
port, 1280 bytes of internal RAM, 128 byte Special Function Register (SFR) address space, and 29/25/21
I/O pins.
1.1.2. Improved Throughput
The CIP-51 employs a pipelined architecture that greatly increases its instruction throughput over the stan-
dard 8051 architecture. In a standard 8051, all instructions except for MUL and DIV take 12 or 24 system
clock cycles to execute with a maximum system clock of 12-to-24 MHz. By contrast, the CIP-51 core exe-
cutes 70% of its instructions in one or two system clock cycles, with only four instructions taking more than
four system clock cycles.
The CIP-51 has a total of 109 instructions. The table below shows the total number of instructions that
require each execution time.
With the CIP-51's maximum system clock at 25 MHz, it has a peak throughput of 25 MIPS. Figure 1.9
shows a comparison of peak throughputs for various 8-bit microcontroller cores with their maximum sys-
tem clocks.
Number of Instructions
Clocks to Execute
CIP-51™ Microcontroller Core
Figure 1.9. Comparison of Peak MCU Execution Speeds
25
20
15
10
5
26
1
(25 MHz clk)
Silicon Labs
CIP-51
50
2
2/3
(33 MHz clk)
PIC17C75x
Rev. 1.7
5
Microchip
C8051F310/1/2/3/4/5/6/7
14
3
(33 MHz clk)
Philips
80C51
3/4
7
(16 MHz clk)
4
3
ADuC812
8051
4/5
1
5
2
8
1
27
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