C8051F310DK Silicon Laboratories Inc, C8051F310DK Datasheet - Page 27

• Manufacturer Part Number: C8051F310DK
• Description: DEV KIT FOR C8051F310/F311
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F310DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F31x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F310
• Silicon Family Name: C8051F31x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051, F310, 311 MCUs
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1253

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
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