Fujitsu Series 3 Manual
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4. Registers [bit 8] CDCIE: Count inversion interrupt enable bit This bit is used to control whether or not to issue an interrupt notification to the CPU when the count inversion interrupt request fl ag (CDCF) is set to 1. When this bit is set to 1, an interrupt is generated if the count direction of the position counter is inverted (CDCF=1). Bit Description 0 Interrupt disabled 1 Interrupt enabled FUJITSU SEMICONDUCTOR LIMITED CHAPTER 17: Quad Position & Revolution Counter MN706-00002-1v0-E 685 MB9Axxx/MB9Bxxx Series
4. Registers FUJITSU SEMICONDUCTOR LIMITED Chapter: Quad Position & Revolution Counter FUJITSU SEMICONDUCTOR CONFIDENTIAL 39 4.9. QPRC Maximum Position Register(QMPR) The QPRC Maximum Position Register (QMPR) is used to specify the maximum value of the position counter. bit 15 14 13 12 11 109 8 7 6 5 4 3 2 1 0 Field QMPR[15:0] Attribute R/W R/W R/W R/W R/W R/W R/WR/WR/WR/WR/WR/W R/W R/W R/W R/W Initial value 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 [bit 15:0] QMPR: When the position counter is counted up, a position c ounter overflow is detected (QICR:OFDF=1) if the set value of the QPRC Maximum Position Register (QMPR) matches the value of the position counter. When the position counter is counted down, the set value of the QPRC Maximum Position Register (QMPR) is reloaded to the position counter if a pos ition counter underflow is detected (QICR:UFDF=1). Do not access the QPRC Maximum Position Register (QMPR) with a byte access instruction. CHAPTER 17: Quad Position & Revolution Counter MN706-00002-1v0-E 686 MB9Axxx/MB9Bxxx Series
1. Configuration CHAPTER: A/D Converter This chapter explains the functions and operations of the A/D converter. 1. Configuration 2. Functions and Operations 3. Notes CODE: 9BFADCTOP-E01.2 FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-1: A/D Converter MN706-00002-1v0-E 687 MB9Axxx/MB9Bxxx Series
1. Configuration 1. Configuration A/D converter converts analog input voltage from an external pin to a digital value. A/D converter configuration 3 units of A/D converters with 10-bit resolution or 12-bit resolution are installed. Any channel can be selected to any unit from 16 channels of analog input. The following triggers can be selected as an activation trigger for A/D conversion. Priority conversion activation trigger Trigger input from an external pin Timer trigger input (base timer or multifunction timer) Software activation Scan conversion activation trigger Timer trigger input (base timer or multifunction timer) Software activation Figure 1-1 shows a connection diagram of the A/D converter with the related circuits. Figure 1-1 Block diagram of the A/D converter with the related circuits I/O port selection circuit ADTG_0Analog Selector AN00 AN01 AN02 AN03 AN04 AN15 ADTG_1 ADTG_2 ADTG_8 Base timer ch. 0 to 7 output (8 triggers) ADC unit0 Scan conversion timer activation Priority conversion external trigger activation Priority conversion timer activation SEL ADC0 scan activation in multifunction timer unit0 SEL ADC unit1 SEL SEL ADC unit2 SEL SEL Analog input pin A/D activation trigger input pin ADC0 scan activation in multifunction timer unit1 Scan conversion timer activation Priority conversion external trigger activation Priority conversion timer activation Scan conversion timer activation Priority conversion external trigger activation Priority conversion timer activation Base timer ch. 0 to 7 output (8 triggers) ADC0 priority activation in multifunction timer unit0 ADC0 priority activation in multifunction timer unit1 Base timer ch. 0 to 7 output (8 triggers) ADC1 scan activation in multifunction timer unit0 Base timer ch. 0 to 7 output (8 triggers) ADC1 scan activation in multifunction timer unit1 ADC1 priority activation in multifunction timer unit0 ADC1 priority activation in multifunction timer unit1 Base timer ch. 0 to 7 output (8 triggers) ADC2 scan activation in multifunction timer unit0 Base timer ch. 0 to 7 output (8 triggers) ADC2 scan activation in multifunction timer unit1 ADC2 priority activation in multifunction timer unit0 ADC2 priority activation in multifunction timer unit1 FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-1: A/D Converter MN706-00002-1v0-E 688 MB9Axxx/MB9Bxxx Series
2. Functions and Operations 2. Functions and Operations See descriptions of the following related chapters for functions and operations of the A/D converter. 10-bit A/D converter operation See the chapter of 10-bit A/D Converter for conversion operations of 10-bit A/D converter. 10-bit A/D timer trig ger select operation See the chapter of A/D Timer Trigger Selection fo r operations of 10-bit A/D converter timer trigger selection. 12-bit A/D converter operation See the chapter of 12-bit A/D Converter for conversion operations of 12-bit A/D converter. 12-bit A/D timer trig ger select operation See the chapter of A/D Timer Trigger Selection fo r operations of 12-bit A/D converter timer trigger selection. FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-1: A/D Converter MN706-00002-1v0-E 689 MB9Axxx/MB9Bxxx Series
3. Notes FUJITSU SEMICONDUCTOR LIMITED CHAPTER: A/D Converter FUJITSU SEMICONDUCTOR CONFIDENTIAL 5 3. Notes This section shows the notes. Notes on 10-bit A/D converter Simultaneous A/D conversion of 3 channels is possible because 3 units of A/D converters are installed. Do not select the same input channel with the multiple units. Some channels of an analog input cannot be used for certain models. Do not change the selection registers (SCIS0, SCIS1, SCIS2, and SCIS3) and the sampling time selection registers (ADSS0, ADSS1, ADSS2, and ADSS3) for the channels which cannot be used from their initial values. In this series, P1A[2:0] of the priority conversion input selection register (PCIS) should be selected for an analog input channel during priority conversion. Always write 0 to ESCE bit of the priority conversion control register (PCCR) of the 10-bit A/D converter. DMA transfer using the A/D interrupt request generation of this series supports only DMA transfer using generation of a scan conversion interrupt request. DMA transfer using a priority conversion interrupt request is not supported. Notes on 12-bit A/D converter Simultaneous A/D conversion of 3 channels is possible because 3 units of A/D converters are installed. Do not select the same input channel with the multiple units. Some channels of an analog input cannot be used for certain models. Do not change the selection registers (SCIS0, SCIS1, SCIS2, and SCIS3) and the sampling time selection registers (ADSS0, ADSS1, ADSS2, and ADSS3) for the channels which cannot be used from their initial values. In this series, P1A[2:0] of the priority conversion input selection register (PCIS) should be selected for an analog input channel during priority conversion. Always write 0 to ESCE bit of the priority conversion control register (PCCR) of the 10-bit A/D converter. DMA transfer using the A/D interrupt request generation of this series supports only DMA transfer using generation of a scan conversion interrupt request. DMA transfer using a priority conversion interrupt request is not supported. CHAPTER 18-1: A/D Converter MN706-00002-1v0-E 690 MB9Axxx/MB9Bxxx Series
1. Overview Chapter: 10-bit A/D Converter This chapter explains the functions and operations of the 10-bit A/D converter. 1. Overview 2. Configuration 3. Explanation of Operations 4. Setup procedure examples 5. Registers CODE: 9BF10BADC-E01.2_FG65-J03.0 FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-2: 10-bit A/D Converter MN706-00002-1v0-E 691 MB9Axxx/MB9Bxxx Series
1. Overview 1. Overview The 10-bit A/D converter is a function that converts analog input voltages into 10-bit digital values using a type of the RC Successive Approximation Register. Features of the 10-bit A/D converter 10-bit resolution Converter using a type of RC Successive Approximation Register with sample and hold circuits Conversion time of 1.2 s (at a peripheral clock frequency of 30 MHz) Two sampling times selectable for each input channel Scan conversion operation: Multiple analog inputs can be selected from multiple channels. Start factors are software and timers. Repeat mode is available. Priority conversion operation: Even during scan operation, if a start factor of priority conversion o ccurs, it is possible to interrupt the ongoing scan conversion and perform conversion with high priority (There are two priority levels: 1 and 2. Priority level 1 is higher than priority level 2.). Start factors are software and timers (priority le vel 2), and external triggers (priority level 1). FIFO function: Sixteen FIFO stages for scan conver sion and four FIFO stages for priority conversion are incorporated. An interrupt is generated when data is wr itten in the specified count of FIFO stages. Changeable A/D conversion data placement (selectable between shift to the MSB side and shift to LSB side) The A/D conversion result comparison function is available. There are four interrupt sources as follows: 1. Scan conversion FIFO stage count interrupt 2. Priority conversion FIFO stage count interrupt 3. FIFO overrun interrupt (for both scan and priority conversion processes) 4. A/D conversion result comparison interrupt DMA transfer triggered by an interrupt request FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-2: 10-bit A/D Converter MN706-00002-1v0-E 692 MB9Axxx/MB9Bxxx Series
2. Configuration 2. Configuration This section provides the configuration of the 10-bit A/D converter. 10-bit A/D converter block diagram Figure 2-1 10-bit A/D converter block diagram Control unit A/D converter Channel & status control unit Peripheral buses Buffer Scan conversion FIFO, 16 stages Priority conversion FIFO, 4 stages D/A converter Comparator Sample & holdAnalog input n Analog input n-1 ・ ・ ・ ・ Analog input 3 Analog input 2 Analog input 1 Analog input 0 A/D conversion result comparison interrupt FIFO overrun interrupt Scan FIFO interrupt Priority FIFO interruptTimer trigger External trigger pin M P X Input impedance The sampling circuit of the A/D converter is shown as an equivalent circuit in Figure 2-2. Refer to the Electrical Characteristics in the data sheet to make su re that the external impedance Rext should be selected not to exceed the sampling time. Figure 2-2 Input impedance equivalence circuit diagram Analog signal source Rext Analog SWRin Cin ADC LSI FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-2: 10-bit A/D Converter MN706-00002-1v0-E 693 MB9Axxx/MB9Bxxx Series
3. Explanation of Operations 3. Explanation of Operations This chapter explains the operations of the 10-bit A/D converter. 3.1 A/D conversion operation 3.2 FIFO operations 3.3 A/D comparison function 3.4 Starting DMA FUJITSU SEMICONDUCTOR LIMITED CHAPTER 18-2: 10-bit A/D Converter MN706-00002-1v0-E 694 MB9Axxx/MB9Bxxx Series