1 A/D Conversion Timing | Panasonic MN101C00 guide

Chapter 6 A/D Conversion Functions

6-2 A/D Conversion

The procedures for operating the A/D conversion circuit are listed below.

(1)Set the ANCHS2 to ANCHS0 flags of A/D control register 0 (ANCTR0) to specify one of pins AN7 to AN0 (PA7 to PA0) as the analog input.

(2)Set the ANCK1 and ANCK0 flags of A/D control register 0 to select the A/D conversion clock. Make this setting such that the period of the conversion clock (TAD), which is based on the oscillator, is greater than 800ns.

(3)With the ANSH1 and ANSH0 flags of A/D control register 0, set the sample-and-hold time. Select a value for the sample and hold time that is suitable for the analog input impedance.

(4)Set the ANLADE flag of A/D control register 0 to "1" so that current flows through the ladder resistors and the A/D converter is on standby.

Note: Steps 1 to 4 above may performed all at the same time.

(5)Set the ANST flag of A/D control register 1 (ANCTR1) to "1" to start the A/D conversion.

(6)After the sample-and-hold time set in step 3, the sampled A/D conversion data is sequentially compared to determine its value beginning with the MSB.

(7)When the A/D conversion is complete, the ANST bit is cleared to "0" and conversion results are stored in A/D buffers (ANBUF0, 1). At the same time, an A/D complete interrupt request (ADIRQ) is generated.

TAD

1~2

3

4

12

ANST

A/D conversion start

A/D conversion complete

TS

Sampling

Hold

Bit 9

Bit 8

Bit 0

comparison

comparison

comparison

Determine

Determine

Determine

Determine

bit 9 value

bit 8 value

bit 1 value

bit 0 value

A/D interrupt

Figure 6-2-1 A/D Conversion Timing

Start the A/D conversion after the current flowing through the ladder resistors stabilizes. The time constant calculated time from the ladder resistance (max. 80 kΩ ) and the external bypass capacitor connected between Vdd and Vss should be used as the criteria for the wait time.

A/D Conversion 115

Image 129

Panasonic MN101C00 user manual 1 A/D Conversion Timing

Contents

Pub. No -011E MN101C115/117 LSI User’s ManualPage Page Under plannin Unit Byte How to Read This Manual Subtitle Sub-subtitle Precautions and warningsMain text Key information Summary Finding Desired Information Page Page Contents0 Contents Port Functions Serial Functions Appendices Page Chapter Overview Overview Product OverviewProduct Summary Model ROM Size RAM Size Classification Hardware Functions Operation modes Normal mode LED driver function 8 pins Ports Pin Diagram Pins MN101C117/115 MN101C117/115 Pin Function Summary Pin No Name TypeFunction Description Rmout 1 Pin Function Summary 2/4 TXD 1 Pin Function Summary 3/4 Mmod 1 Pin Function Summary 4/4 Bit timer Conversion Block DiagramOverview of Functions MN101C00 Contents Model MN101C117/115 Electrical CharacteristicsParameter Symbol Rating Unit Absolute Maximum Ratings ∗2 ∗3 Supply voltage Operating ConditionsOperating speed ∗ Crystal oscillator 1 Fig External clock input 2 XI XO is unconnected*2 External clock input 1 OSC1 OSC2 is unconnected 9VDD 1VDD Twh1twl1 Twr1twf1 Supply current no load at output ∗ DC Characteristics Input pin 1 Mmod Input pin 3-2 P21 when used as SensInput pin 2 P20, P22~P23 Schmitt trigger input Input pin 3-1 P21 Schmitt trigger input Input pin 4 PA0~PA7 Sens pin Pin 6 P00 to P06, P10 to P14 Schmitt trigger input Pin 5 P27 RSTPin 7 , P60 to P67 Pin 8 P70 to P71 Pin 9 P80~P87 4 A/D Converter Characteristics ROM Option Option Model Name MN101C Date SE No Customer Option Form Package code SDIP042-P-0600 Unit mm Outline Drawings 2 44-QFP Package code QFP044-P-1010 Unit mm 3 48-QFH Package code QFH048-P-0707 Unit mm Basic CPU Functions Memory Configuration OverviewAddress Space 03FAX 03FBX 03FCX Special Function Registers03FDX 03FEX 03FFX Control Registers Bus InterfaceMemory control registerMEMCTR Memctr Accepting and Returning from Interrupts InterruptsNew SP Low Address High Operation when Returning from Interrupt Interrupt Sources and Vector Addresses Non-maskable Interrupt Control Register Nmicr Interrupt Control Registers XxxLV1 XxxLV0 XxxIE XxxIR At reset Reset Releasing the ResetRST pin Clock cycles 200ns for a 20MHz oscillation Chapter Port Functions 1 Status When Port Is Reset single-chip mode Port 0 P02 Port 0 Functions 3 Port 1 Functions Port 1 P1Port 2 P2 4 Port 2 Functions Port 7 Functions Port 7 P7Port 8 P8 Port 8 Functions Name Address Function Port Control Registers Port Control Registers 2/2 At reset XXX At resetAt reset Xxxxx At reset 000 P7IN1 P7IN0 P8IN7 P8IN6 P8IN5 P8IN4 P8IN3 P8IN2 P8IN1 P8IN0 1 Port Control Registers 2/2 2 I/O Port Control Registers O port Special function pin Pin Control Registers Port Output/Input Mode Registers P00,P02,P10 to P14 I/O Port Configuration and Functions P01 Pull-up Control bit P01Resistor Register Control Address PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA0 to PA7 Pin Configuration for P20, P22 to P23 P20 P22 P23 Pull-up Control bitPort input Control bit P21 5 Configuration and Functions of P21 P27 6 Configuration and Functions of P27 P70 to P71 Configuration and Functions of P70P70 P71 Direction P60 to P67,P80 to P87 8 Configuration and Functions of P60 to P67 Chapter Timer Functions Clock PWM outputFs/4 Source Fosc,fx/2 1 Timers 2, 3 Block Diagram 2 Timer 4 Block Diagram 3 Timer 5/Time Base Block Diagram Wdctr WdirqMUX Dlyctr Rmctr 5 Remote Control Transmission Block Diagram 8-bit Timer Operation timers 2 BitSIF0 1 Binary Counter 2 TM2BC Count Timing Operation 64 8-bit Timer Operation timers 2 Matches compare register Binary counter 3 Timer Pulse Output Timing 4 PWM Output Timing Clock PWM output 6 PWM Output Timing when TM2OC register is XFF Disable the timer 2 interrupt 16-bit Timer Operation timer 1 Binary Counter 4 TM4BC Count Timing Timer Functions Matches TM4OCH, TM4OCL register Binary counter 4 Pulse Added Type PWM Output 1 Pulse-Added PWM OutputFigure Setting the Added Pulse PositionRepeated 256 times FFPosition Added pulse Timer Functions Timer Operation 8-bit Timer Operation timer Base Time Settings TM5IR2 to Time Base OperationClock Source Setup and Operation Watchdog Timer Operation 1 Remote Control Carrier Output Waveform Remote Control Output Operation Buzzer Output Buzzer Output Setup and Operation Timer Function Control Registers Timer Control RegistersName Address Function Programmable Timer/Counters TM2BC7 TM2BC6 TM2BC5 TM2BC4 TM2BC3 TM2BC2 TM2BC1 TM2BC0TM3BC7 TM3BC6 TM3BC5 TM3BC4 TM3BC3 TM3BC2 TM3BC1 TM3BC0 Binary Counter 4 TM4BCL X03F64, R Compare register 4 TM4OCL lower 8 bitsBinary Counter 4 TM4BCH X03F65, R Binary counter 4 TM4BCH upper 8 bits Input capture register TM4ICL lower 8 bits Input Capture Register TM4ICL X03F66, RTM5BC7 TM5BC6 TM5BC5 TM5BC4 TM5BC3 TM5BC2 TM5BC1 TM5BC0 TM2MD Timer Mode RegistersTM2PWM TM2EN TM3MD Timer 3 mode register TM3MDTM3PWM TM3EN TM4MD Timer 4 mode register TM4MDIRQ0 IRQ1 IRQ2 TM4PWM TM4EN TM5MD Timer 5 mode register TM5MDTM5CK0 TM5IR0 Watchdog timer control register Wdctr Timer Control Registers Rmoen Remote control carrier output control register Rmctr Chapter Serial Functions Serial Functions 1 Serial 0 Block Diagram Synchronous Serial Interface Serial Functions SBO SBTSC0BSY SBT SBO Serial Functions Start condition enabled Start condition disabled Serial Interface Transfer Timing 1 Serial Data Input Edge and Output Edge serial interfaceReceive Data Input Edge Transmit Data Output Edge SBT0 SBI0SBO0 Half-duplex Uart Serial Interface 1 Uart Transmission Timing Reception 2 Uart Reception Timing How to Use the Baud Rate Timer SC0RXB Serial Interface Control Registers Serial interface 0 transmit/receive shift register SC0TRB Transmit/Receive Shift Registers, Receive Data BufferSC0TRB SC0RXB Serial interface 0 mode register SC0MD0 Serial Interface Mode RegistersSC0MD0 SC0STE Serial interface 0 mode register 1 SC0MD1 SC0MD2 Serial interface 0 mode register 2 SC0MD2SC0NPE SC0BRKE Serial interface 0 mode register 3 SC0MD3 Serial interface 0 control register SC0CTR Serial Interface Control Register Chapter Conversion Functions ANCTR0 AN0 AN1 AN2 AN3 AN4 AN5 AN6 AN7ANCTR1 ANBUF1 ANBUF0 1 A/D Conversion Timing A/D Conversion 2 Recommended Circuit When Using A/D Conversion 1 A/D Converter Control Registers A/D Converter Control Registers 2 A/D Control Register Anctr D control register 0 ANCTR0AN0 ANCTR1 Anst D conversion control register 1 ANCTR1 5 4 3 2 1 3 A/D Buffers Anbuf Chapter AC Zero-Cross Circuit/Noise Filter 1 P21 Input Circuit Block Diagram 1 AC Line Waveform and IRQ Generation Timing AC Zero-Cross Circuit Operation Noise Filter 1 Noise Filtering Circuit Block Diagram Sampling Input Waveform after noise filtering Example Input and Output Waveforms for Noise Filter Nfctr AC Zero-Cross Control Register Noise Filter Control Register Nfctr NfctrNF0EN 128 Appendices8 Eprom Versions Appendices Appendices Operating temperature Characteristics of Eprom VersionTion start control,runaway Internal ROM final address data There are no other functional differences Fit in the writing adapter and position the No.1 pin Writing to Microcomputer with Internal Eprom Data I/O Vendor Appendices 2 Option bitAddress X07FFF Option Bit Package Code SDIP042-P-0600 Writing Adapter Connection 4 MN101CP117-BLBCEPROM Writing Adapter Connections Package code QFP044-P-1010 Pin pitch 8mm 5 MN101CP117-HP Eprom Writing Adapter connections Package code QFH048-P-0707 Pin pitch 5mm Instruction Set 1101 111a #16 ∗1 d4 sign extended ∗2 d7 sign extended ∗3 d11 sign extended 0010 0011 0001 D11 0011 0100 0bp Ver2.01997.9.26 MN101C00 Series Instruction MAP Instruction Map Cbeq #8,abs16,d7/11 Cbne #8,abs16,d7/11 Cpum Summary of Special Function Registers P6IN7 P2PLU2 TM2BC4 TM2BC3 TM2BC2 TM2BC1 Nmicr Wdir TBLV0 Tbir Matsushita Electronics Corporation MN101C115 Sales Offices