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Silicon Lab C8051F9xx低压MCU方案

作者:  时间:2008-07-10 10:17  来源:eaw
Silicon Lab公司的C8051F9xx低电压低功耗系列是业界首个能工作在0.9 V 到 3.6 V的MCU,直接用单节电池就能工作,大大地增长了两节电池的寿命。C8051F9xx还集成了64kB的闪存和4kB的RAM,10位300-ksps ADC以及快速叫醒的基准电压,smaRTClock定时模块以及多个内部振荡器选择,真正提供片上系统解决方案。C8051F9xx广泛用在手提个人医疗产品,遥控,手提音频设备,消费类电子,无线传感器,无线读表以及工业监视和控制。本文介绍了C8051F9xx的主要性能,方框图以及开发板的主要性能和详细的电路图。

The C8051F9xx product family is the industry’s first MCU family capable of operating down to 0.9 V and up to 3.6 V, enabling single-cell battery operation as well as dramatically increasing battery life for dual-cell applications. With an integrated dc-dc converter, the C8051F9xx has been designed to provide a fast wake-up time, low active-mode, and ultra-low sleep mode current consumptions. The C8051F9xx family not only provides high performance while saving power but also unprecedented functional density in a small footprint. The C8051F9xx is the first line of MCUs to integrate 64 kB of Flash and 4 kB of RAM into a 4 x 4 mm package while also integrating a 10-bit, 300-ksps analog-to-digital converter (ADC) with an internal fast wake-up voltage reference, a smaRTClock timing module, and multiple internal oscillator options to provide a true system-on-chip solution.
Lowest Voltage Operation
With an integrated dc-dc converter, the C8051F9xx family is the industry’s first MCU capable of operating down to 0.9 V, enabling single-cell battery operation and
dramatically increasing battery life for dual-cell applications, ultimately shrinking the form factor and cost of battery-powered products.
Greatest Power Efficiency
The C8051F9xx family is optimized in all operating modes to enable customers to
either move to a single-cell design or increase the system’s battery life by up to 2x in parallel dual-cell designs.
Highest Functional Density
With 64 kB of Flash and 4 kB of RAM in a 4 x 4 mm package, the C8051F9xx provides customers with increased memory for data-intensive applications.
The small form factor makes these devices ideal for applications where end-product
size is critical.
Maximize Battery Life
The C8051F9xx family is optimized to maximize power efficiency by enabling an ultra-low current sleep mode, a fast wake-up time, a fast settling time to support analog measurements, and a low active current mode, resulting in maximum battery life.



C8051F9xx 主要特性:
Single cell/dual-cell operation
One-cell mode supports 0.9 to 1.8 V operation
Dual-cell mode supports 1.8 to 3.6 V operation
Integrated high-efficiency dc-dc boost converter
Integrated low drop out (LDO) voltage regulator
Multiple internal oscillators
smaRTClock oscillator
Low power 20 MHz oscillator
Precision 24.5 MHz oscillator with spread spectrum mode
Ultra-low current sleep mode and fast wake
25 MHz, single-cycle 8051 compatible CPU with low active-mode current
Unprecedented functional density
64 kB Flash memory
4 kB of RAM
4 x 4 mm package
Burst mode 10-bit ADC with internal fast start-up VREF
Capacitive touch sense support
Two on-chip voltage comparators
Up to 23 capacitive touch sense inputs

主要应用:
Portable personal medical products
Remote controls
Portable audio
Consumer electronics
Wireless sensors and security
Wireless meter reading
Industrial monitoring and control



图1. C8051F9xx方框图

The C8051F930 Development Kit is intended as a development platform for the microcontrollers in the C8051F93x-C8051F92x MCU family. The members of this MCU family are C8051F930, C8051F931, C8051F920, and C8051F921.

开发套件所包含内容:
The C8051F930 Development Kit contains the following items:
C8051F930 Target Board
C8051Fxxx Development Kit Quick-Start Guide
Silicon Laboratories IDE and Product Information CD-ROM. CD content includes the following:
Silicon Laboratories Integrated Development Environment (IDE)
Keil 8051 Development Tools (macro assembler, linker, evaluation C compiler)
Source code examples and register definition files
Documentation
C8051F930 Development Kit User’s Guide (this document)
AC to DC Power Adapter
USB Debug Adapter (USB to Debug Interface)
2 USB Cables
2 AAA Batteries



图2. C8051F930 目标板外形图



图3. C8051F9xx开发板电路图(1)



图4. C8051F9xx开发板电路图(2)



图5. C8051F9xx开发板电路图(3)

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