C8051F020-TB Silicon Laboratories Inc, C8051F020-TB Datasheet - Page 22
![BOARD PROTOTYPING W/C8051F020](/photos/28/94/289414/tqfp-100_sml.jpg)
C8051F020-TB
Manufacturer Part Number
C8051F020-TB
Description
BOARD PROTOTYPING W/C8051F020
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F020-TB
Contents
Board
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F020
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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C8051F020/1/2/3
1.1.
1.1.1. Fully 8051 Compatible
The C8051F020 family utilizes Silicon Labs' proprietary CIP-51 microcontroller core. The CIP-51 is fully compati-
ble with the MCS-51™ instruction set; standard 803x/805x assemblers and compilers can be used to develop soft-
ware. The core has all the peripherals included with a standard 8052, including five 16-bit counter/timers, two full-
duplex UARTs, 256 bytes of internal RAM, 128 byte Special Function Register (SFR) address space, and 8/4 byte-
wide I/O Ports.
1.1.2. Improved Throughput
The CIP-51 employs a pipelined architecture that greatly increases its instruction throughput over the standard 8051
architecture. In a standard 8051, all instructions except for MUL and DIV take 12 or 24 system clock cycles to exe-
cute with a maximum system clock of 12-to-24 MHz. By contrast, the CIP-51 core executes 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 1.5 shows a com-
parison of peak throughputs of various 8-bit microcontroller cores with their maximum system clocks.
22
Number of Instructions
Clocks to Execute
CIP-51™ Microcontroller Core
Figure 1.5. Comparison of Peak MCU Execution Speeds
25
20
15
10
5
26
1
Silicon Labs
(25MHz clk)
CIP-51
50
2
(33MHz clk)
PIC17C75x
2/3
Rev. 1.4
5
Microchip
14
3
(33MHz clk)
Philips
80C51
3/4
7
4
3
(16MHz clk)
ADuC812
8051
4/5
1
5
2
8
1
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