Source capacitance, Current injection | Motorola MC9S12DJ128B

MC9S12DT128B Device User Guide — V01.07

specifies results in an error of less than 1/2 LSB (2.5mV) at the maximum leakage current. If device or operating conditions are less than worst case or leakage-induced error is acceptable, larger values of source resistance is allowed.

A.2.2.2 Source capacitance

When sampling an additional internal capacitor is switched to the input. This can cause a voltage drop due to charge sharing with the external and the pin capacitance. For a maximum sampling error of the input

voltage ≤ 1LSB, then the external filter capacitor, C	f	≥ 1024 * (C	INS	– C ).
	f		INS	INN

A.2.2.3 Current injection

There are two cases to consider.

1.A current is injected into the channel being converted. The channel being stressed has conversion

values of $3FF ($FF in 8-bit mode) for analog inputs greater than VRH and $000 for values less than VRL unless the current is higher than specified as disruptive conditions.

2.Current is injected into pins in the neighborhood of the channel being converted. A portion of this current is picked up by the channel (coupling ratio K), This additional current impacts the accuracy of the conversion depending on the source resistance.

The additional input voltage error on the converted channel can be calculated as VERR = K * RS * IINJ, with IINJ being the sum of the currents injected into the two pins adjacent to the converted channe

Table A-9 ATD Electrical Characteristics

Conditions are shown in Table A-4unless otherwise noted

Num	C	Rating	Symbol	Min	Typ	Max	Unit

1	C	Max input Source Resistance	RS	-	-	1	KΩ

		Total Input Capacitance	CINN
2	T	Non Sampling	CINN			10	pF
		Sampling	CINS			22
3	C	Disruptive Analog Input Current	INA	-2.5		2.5	mA
4	C	Coupling Ratio positive current injection	Kp			10-4	A/A
5	C	Coupling Ratio negative current injection	Kn			10-2	A/A

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Motorola MC9S12DJ128B, MC9S12DT128B manual Source capacitance, Current injection, Table A-9 ATD Electrical Characteristics

Contents

Original Release Date 18 June Revised 16 Aug Motorola, Inc Revision History Table of Contents MC9S12DT128B Device User Guide Modes of Operation Resets and InterruptsSystem Clock Description HCS12 Core Block Description Clock and Reset Generator CRG Block Description Appendix B Package Information MC9S12DT128B Device User Guide List of Figures Order Partnumber Example MC9S12DT128B Device User Guide List of Tables MC9S12DT128B Device User Guide Derivative Differences1 PrefaceModules MC9S12DT128B MC9S12DG128B MC9S12DJ128B MC9S12DB128B Document References User Guide Version Document Order Number Introduction FeaturesOverview MC9S12DT128B Device User Guide Modes of Operation Block Diagram 1shows a block diagram of the MC9S12DT128B device MC9S12DT128B Block Diagram Address Module Size Bytes Device Memory MapDevice Memory Map Core MEMSIZ, IRQ, Hprio MC9S12DT128B Memory Map $0000 $000F Mebi map 1 of 3 Core User Guide Detailed Register Map$0010 $0014 MMC map 1 of 4 Core User Guide $001E $001E Mebi map 2 of 3 Core User Guide $0015 $0016 INT map 1 of 2 Core User Guide$0017 $0017 MMC map 2 of 4 Core User Guide $001F $001F INT map 2 of 2 Core User Guide $0030 $0031 MMC map 4 of 4 Core User Guide $0020 $0027Reserved$0028 $002F BKP Core User Guide $0032 $0033 Mebi map 3 of 3 Core User Guide $0034 $003F CRG Clock and Reset Generator $0040 $007F ECT Enhanced Capture Timer 16 Bit 8 Channels TCTL4 TCTL3EDG7A EDG6B EDG6A EDG5B EDG5A EDG4B EDG4A EDG3A EDG2B EDG2A EDG1B EDG1A EDG0B EDG0A Flmc McctlMczi Modmc Rdmcl Mcen MCPR1 MCPR0 Mcflg Fifo FRZ1 FRZ0 AscifAdpu Affc Awai Etrigle Etrigp Ascie SRES8 SMP1 SMP0 $00A0 $00C7 PWM Pulse Width Modulator 8 Bit 8 Channel Pwmscntb PwmsclbPwmscnta PWMCNT0 SCI0 Asynchronous Serial Interface $00D0 $00D7 SCI1 Asynchronous Serial Interface SPI0 Serial Peripheral Interface $00E0 $00E7 IIC Inter IC Bus $00F0 $00F7 SPI1 Serial Peripheral Interface $00E8 $00EF Bdlc Byte Level Data Link Controller J1850$00F8 $00FFReserved $0100 $010F Flash Control Register fts128k2 $0110 $011B Eeprom Control Register eets2k ATD1TEST0 $011C $011F Reserved for RAM Control RegisterEaddrlo ATD1TEST1 $0140 $017F CAN0 Motorola Scalable can Mscan CAN0TIER CAN0TFLGTXE2 TXE1 TXE0 TXEIE2 TXEIE1 TXEIE0 $0180 $01BF CAN1 Motorola Scalable can Mscan $01C0 $01FFReserved $0200 $023FReserved $0240 $027F PIM Port Integration Module Perp PtipPTIP7 PTIP6 PTIP5 PTIP4 PTIP3 PTIP2 PTIP1 PTIP0 PERP7 $0280 $02BF CAN4 Motorola Scalable can Mscan $02C0 $02FFReserved $0300 $035F Byteﬂight BFTDATA0 BftidentBftlen Bfrident Assigned Part ID Numbers Part ID Assignments$0360 $03FFReserved Memory size registers MC9S12DT128B Device User Guide Signal Description Device Pinout PAD14/AN14 IOC0/PT0 Pin Name Signal Properties SummarySignal Properties Description PE1 IRQ Vddr PM2 Rxbf RXCAN1 RXCAN0 MISO0 Vddx PM3 Txbf TXCAN1 TXCAN0 SS0 VddxPpsm SPI0 Perm CAN1, CAN0, Miso Reset External Reset Pin Detailed Signal DescriptionsEXTAL, Xtal Oscillator Pins Test Test Pin 10 PA70 / ADDR158 / DATA158 Port a I/O Pins 7 PAD148 / AN160 Port AD Input Pins9 PAD60 / AN060 Port AD Input Pins 11 PB70 / ADDR70 / DATA70 Port B I/O Pins Colpitts Oscillator Connections PE7=1 Pierce Oscillator Connections PE7=0 15 PE4 / Eclk Port E I/O Pin 13 PE6 / Modb / IPIPE1 Port E I/O Pin14 PE5 / Moda / IPIPE0 Port E I/O Pin 16 PE3 / Lstrb / Taglo Port E I/O Pin 23 PH4 / KWH4 Port H I/O Pin 21 PH6 / KWH6 Port H I/O Pin22 PH5 / KWH5 Port H I/O Pin 24 PH3 / KWH3 / SS1 Port H I/O Pin 29 PJ6 / KWJ6 / RXCAN4 / SDA Port J I/O Pin 30 PJ10 / KWJ10 Port J I/O Pins32 PK50 / XADDR1914 Port K I/O Pins 31 PK7 / ECS / Romctl Port K I/O Pin 38 PM2 / Rxbf / RXCAN1 / RXCAN0 / MISO0 Port M I/O Pin 36 PM4 / Bfpsyn / RXCAN0 / RXCAN4/ MOSI0 Port M I/O Pin37 PM3 / Txbf / TXCAN1 / TXCAN0 / SS0 Port M I/O Pin 39 PM1 / TXCAN0 / TXB Port M I/O Pin 45 PP3 / KWP3 / PWM3 / SS1 Port P I/O Pin 43 PP5 / KWP5 / PWM5 Port P I/O Pin44 PP4 / KWP4 / PWM4 Port P I/O Pin 46 PP2 / KWP2 / PWM2 / SCK1 Port P I/O Pin Power Supply Pins 3 VDD1, VDD2, VSS1, VSS2 Core Power Pins VDDX,VSSX Power & Ground Pins for I/O DriversVssa VDDPLL, Vsspll Power Supply Pins for PLL VDDA, Vssa Power Supply Pins for ATD and Vreg5 VRH, VRL ATD Reference Voltage Input Pins Vregen On Chip Voltage Regulator Enable MC9S12DT128B Device User Guide System Clock Description Clock Connections MC9S12DT128B Device User Guide Modes of Operation Chip Configuration SummaryMode Selection Clock Selection Based on PE7 Securing the Microcontroller SecurityOperation of the Secured Microcontroller Low Power Modes MC9S12DT128B Device User Guide Vector Table Resets and InterruptsVectors Interrupt Vector Locations Effects of Reset 1 I/O pins Memory MC9S12DT128B Device User Guide HCS12 Core Block Description Clock and Reset Generator CRG Block DescriptionEnhanced Capture Timer ECT Block Description Analog to Digital Converter ATD Block Description J1850 Bdlc Block Description DescriptionSerial Peripheral Interface SPI Block Description Byteflight BF Block Description Port Integration Module PIM Block Description RAM Block DescriptionMscan Block Description Voltage Regulator Vreg Block Description Suggested External Component Values Printed Circuit Board Layout ProposalComponent Purpose Type Value Recommended PCB Layout for 112LQFP Colpitts Oscillator Recommended PCB Layout for 80QFP Colpitts Oscillator Recommended PCB Layout for 112LQFP Pierce Oscillator Recommended PCB Layout for 80QFP Pierce Oscillator General Appendix a Electrical CharacteristicsPower Supply Parameter Classification Pins Current Injection ESD Protection and Latch-up Immunity Num Rating Symbol Min Max UnitAbsolute Maximum Ratings Table A-1 Absolute Maximum Ratings1 Operating Conditions Table A-3 ESD and Latch-Up Protection CharacteristicsModel Description Symbol Value Unit Table A-2 ESD and Latch-up Test Conditions Rating Symbol Min Typ Max Unit Power Dissipation and Thermal CharacteristicsTable A-4 Operating Conditions Pint = IDD ⋅ VDD + Iddpll ⋅ Vddpll + Idda ⋅ Vdda Table A-5 Thermal Package Characteristics1 9 I/O CharacteristicsNum Rating Symbol Min Typ Max Unit Table A-6 5V I/O Characteristics Measurement Conditions Supply CurrentsAdditional Remarks Table A-7 Supply Current Characteristics Table A-8 ATD Operating Characteristics ATD CharacteristicsATD Operating Characteristics Factors influencing accuracy Source capacitance Table A-9 ATD Electrical CharacteristicsCurrent injection ATD accuracy Table A-10 ATD Conversion Performance Figure A-1 ATD Accuracy Definitions Single Word Programming NVM, Flash and EepromNVM timing Burst Programming Mass Erase Table A-11 NVM Timing CharacteristicsSector Erase Blank Check NVM Reliability Table A-12 NVM Reliability CharacteristicsNum Rating Cycles Data Retention Unit Lifetime 100 Voltage Regulator Table A-13 Voltage Regulator Recommended Load Capacitances 102 Reset, Oscillator and PLL Startup Table A-15 Oscillator Characteristics Pseudo Stop and Wait RecoveryOscillator XFC Pin Phase Locked LoopXFC Component Selection ⋅ synr + Jitter Information = max ⎜ ⋅ t nom Table A-16 PLL Characteristics Table A-17 Mscan Wake-up Pulse Characteristics Mscan 110 Master Mode Mosi Port Data LSB Master LSB OUT Slave Mode Table A-19 SPI Slave Mode Timing Characteristics External Bus Timing General Muxed Bus Timing PA, PB Eclk PE4ECS PK7 PE2 Lstrb PE3 Noacc PE7 PIPO0 Table A-20 Expanded Bus Timing Characteristics Pweh 118 Appendix B Package Information 112-pin Lqfp mechanical dimensions case no 112-pin Lqfp package 80-pin QFP Mechanical Dimensions case no B 80-pin QFP package 122 User Guide End Sheet 124