Instruction/ maintenance manual of the product 95F430 Fujitsu
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Fujitsu Semiconductor (Shanghai) Co., Ltd. MCU-AN-500080-E-10 Application Note F²MC-8FX FAMILY 8-BIT MICROCONTROLLER MB95F430 SERIES OPERATIONAL AMPLIFIER APPLICATION NOTE.
Operational Amplifier Version 1.0 Revision History Revision History Date Author Change of Records 2010-03-22 Folix V1.0, First draft This manual contains 18 pages. 1. The products described in this manual and th e specif ications thereof may be cha nged without prior notice.
Operational Amplifier Version 1.0 CONTENTS CONTENTS Revision History .......................................................................................................................... 2 Table of Contents ...................................
Operational Amplifier Version 1.0 Chapter 1 Introduction 1 Introduction In this document, we will introduce how to use the amplifier function on the MB95F430 series. Chapter 2 gives an overview on operational amplifier. Chapter 3 introduces the operations of operational amplifier.
Operational Amplifier Version 1.0 Chapter 2 Amplifier Overview 2 Amplifier Overview Amplifier Overview The operational amplifier can be used to sense the ground current, and support front-end analog signal conditioning prior to A/D conversion. It can operate in either closed loo p mode or standalone open loop mode.
Operational Amplifier Version 1.0 Chapter 2 Amplifier Overview 2.1 Block Diagram of Operational Amplifier Figure 1 Block Diagram of Operational Amplifier 2.
Operational Amplifier Version 1.0 Chapter 2 Amplifier Overview 2.3 OPAMP Control Register The OPAMP control register (OPCR) is used to turn on and off the OPAMP, to enable and disable OPAMP analog output, and to enable and disable OPAMP analog input.
Operational Amplifier Version 1.0 Chapter 2 Amplifier Overview ■ Functions of Bits in OPAMP Control Register (OPCR) ■ OPAMP Operating Mode Settings Notes: • While the OPAMP is operating, modifyi.
Operational Amplifier Version 1.0 Chapter 3 Operations of Operational Amplifie r 3 Operations of Operational Amplifier Operations of Operational Amplifier The operational amplifier can be activated by setting the PD bit in the OPCR register using the software.
Operational Amplifier Version 1.0 Chapter 4 Amplifier setting procedure 4 Amplifier setting procedure Below is an example of procedure for setting the operational amplifier. ● Initial settings 1) Set both OPCR: OPID and OPCR: OPOD to "0" to enable both OPAMP analog input and OPAMP analog output.
Operational Amplifier Version 1.0 Chapter 5 Amplifier Driver 5 Amplifier Driver This is OPAMP driver description. 5.1 Peripheral Usage The MCU pins used as below: OPAMP_N,used as amplifier negative input; OPAMP_P,used as amplifier positive input; OPAMP_O,used as amplifier output; 5.
Operational Amplifier Version 1.0 Chapter 5 Amplifier Driver 5.2.2 Amplifier Routine void AmpOpenLoop() Return : none. Parameters : none. Description : open-loop setting. Example : AmpOpenLoop(); void AmpOpenLoop() { DDR6_P60=0; DDR6_P61=0; DDR6_P62=1; OPCR=0x60; //Amplifier gain is R3/R1 } void AmpCloseLoop() Return : none.
Operational Amplifier Version 1.0 Chapter 6 Typical Application 6 Typical Application This is the typical application introduction. 6.1 HW Design In this application, we will test the operational amplifier in the MB95F430K. The HW is designed as below.
Operational Amplifier Version 1.0 Chapter 7 More Information 7 More Information For more Information on FUJITSU Semiconductor products, visit the following websites: English version: http://www.fujitsu.com/cn/fsp/serv ices/mcu/mb95/application_notes.html Simplified Chinese Version: http://www.
Operational Amplifier Version 1.0 Chapter 8 Appendix 8 Appendix Figure 1 Block Diagram of Operational Amplifier ................................................................................ 6 Figure 2 OPAMP Control Register ....................
Operational Amplifier Version 1.0 Chapter 9 Sample Code 9 Sample Code main.c #include "mb95430.h" #include "TypeDef.h" /*-----------------------------------------------------------.
Operational Amplifier Version 1.0 Chapter 9 Sample Code /* ILRx IRQs defined by ILRx */ ILR0 = 0xFF; // IRQ0: external interrupt ch0 | ch4 / / I R Q 1 : e x t e r n a l i n t e r r u p t c h 1 | c h 5.
Operational Amplifier Version 1.0 Chapter 9 Sample Code MCU-AN-500080-E-10 - Page 18 #pragma intvect DefaultIRQHandler 6 // IRQ6: 8/16-bit timer ch0 (upper) #pragma intvect DefaultIRQHandler 7 // IRQ7.
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