DS2251T/DS2252T RTC Block Diagram ±6, 151

USER'S GUIDE

DS2251T/DS2252T RTC BLOCK DIAGRAM Figure 17±6

DS2251T

	VCCO	VCC
	PE1	CE
DS5001	R/W	WE	DS1283
CPU	BA5±0	A5±0	RTC
	BA5±0	A5±0
	BD7±0

INTB

INTA

INTP

DS2252T

P3.2 (INT0)

DS5002

CPU

VCCO	VCC
PE1	CE
R/W	WE
BA5±0	A5±0
BD7±0

DS1283

RTC

INTP

MEMORY MAP

In both the DS2251T and DS2252T, the RTC function is memory mapped. It is accessed using the peripheral selects. First, the PES bit at MCON.2 must be set to a logic 1. This will enable the peripheral space in the

MOVX area. The RTC function is mapped under PE1. This area begins at address 0000h. The Timekeeping map consists of 14 time±related registers and 50 bytes of SRAM. It is illustrated in Figure 17±7.

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Mitsubishi DS5000TK, DS907x SIP manual DS2251T/DS2252T RTC Block Diagram ±6, Memory MAP, 151

Contents

Table of Contents Software Security IntroductionSeparate ADDRESS/DATA BUS Module Description ON±BOARD Memory Package Large Nonvolatile MemoryIN±SYSTEM Loading High Reliability Operation DS2250T Soft Microcontroller Module Product DescriptionDS5000FP Soft Microprocessor Chip DS5000T Soft Microcontroller Module DS5002FP Secure Microprocessor Chip DS2251T 128K Soft Microcontroller ModuleDS2252T Secure Microcontroller Module Speed Clock Part Number Selection GuideChip Description Maximum Speed Part Number Module Description Secure Microcontroller Architecture Secure Microcontroller Architectural Block Diagram Figure High±Reliability Circuitry Timed Access LogicParallel I/O Program/Data RAM Interface Resident Loader ROM Watchdog Timer Internal Registers Programmers GuideSecure Microcontroller Memory Organization Secure Microcontroller Memory MAP ±1 Scratchpad Register MAP ±2 PSW.4±3 R1±R0 Register Bank Select Program and Data MemoryBank Starting Address R0 Important Application Note DS5000 Series Memory Organization Memory map. The first is the EA pin. The second is DS5000 Series Memory MAP ±3Overrides the condition of the EA pin as well DS5000 Series Mcon Register ±4 Bit Description DS5000 Memory Map ControlPA3 MCON.2 ECE2 DS5001/DS5002 Memory OrganizationMCON.3 RA32/8 PA3 PA2 PA1 PA0 Partition BYTE±WIDE BUS Memory MAP RG1 RG0 Range CE1 Access CE2 Access CE1 CE2 CE3 Msel RG1 RG0 Program Data Program Access Data AccessPartitionable Memory MAP for DS5001/DS5002 Series ±5 CE1 CE3 CE4 DS5001/DS5002 Memory Mapped Peripherals NON±PARTITIONABLE Memory MAP for DS5001, DS5002 Series ±6 DS5001/DS5002 Memory Map Control Peripheral Enables in the Data Memory MAP ±7 MCON.2 PES DS5001/DS5002 Series Mcon Register ±8PA3 PA2 PA1 PA0 RG1 PES MCON.3 RG1 RPCTL.0 RG0 Loading and Reloading Program MemoryRPCTL.5 Exbs RPCTL.4 050396 23/173 Reloading Portions of a DS5000 Series Device ±10 Soft Reload of a DS5001/DS5002 Reloading a DS5001/DS5002 Series Device ±11 Special Function Registers ECE2 DS5000 Series Special Function Register MAP ±12 CRC DS5001/DS5002 Series Special Function Register MAP ±13 Label Pcon Register Address 087H Power Control Register PCON.0 IDL PCON.3EPFWPCON.2 EWT PCON.1 Stop Label Tcon Register Address 088H Timer Control Register Gate Timer Mode RegisterLabel Tmod Register Address 089H TCON.0 IT0 LabelSCON Register Address 098H Serial Control Register ET1 Interrupt Enable RegisterLabelIE Register Address 0A8H SCON.0 LabelIP Register Address 0B8H Interrupt Priority Register CRC.1 MDM DS5001 CRC RegisterLabel CRC Register Address 0C1H RNGE3±0 RA32/8 DS5000 Memory Control RegisterLabelMCON Register Address 0C6H PA3 PA2 PA1 PA0 Label Mcon Register Address 0C6H DS5001 Mcon RegisterMCON.0 Accessed by Movx instructions on the Byte±wide bus LabelPSW Register Address 0D0H Program Status Word Register RPCTL.3 IBI DS5001/DS5002 RPC Control RegisterLabel Rpctl Register Address 0D8H RPCTL.7 RNR IA0 DS5001/DS5002 RPC Status RegisterLabel RPS Register Address 0DAH RPCTL.1 Rpcon OBF RPS.1IBF RPS.0 Setb 00H Instruction SETAddressing Modes ADD A, R4 Address ±20 Branch to the location PC+2 ±Addressing Acall 100H Call to the subroutine at Program Status Flags Instructions That Affect Flag SettingsFlags Instruction OV AC 25C 40C 70C Memory InterconnectRecommended SRAMs for USE with Soft Microcontrollers ±1 Data Reten Part Tion Current RAM Size Vendor Memory Interconnect of the DS5000FP ±1 DS5000 Series Module Block Diagram ±2 Memory Interconnect of the Partitionable DS5001/DS5002 ±3 Óóóóóóóóó Ó Óóóóóóóó 52 14Ó GND Memory Interconnect Using the 128K Sram ±5 DS2251T±128 Block Diagram ±6 Ôôôôôô DS2252T±32 Block Diagram ±7 Battery Backed Circuits LITHIUM/BATTERY BackupData Retention Battery attached Power Supply Slew Rate ±1Battery Attach Procedure Battery Lifetime 180 * 10±3 54 * 10±32400 + 75 * 10±9 * 24 21.68 * 10±3 Freshness Seal Lithium Battery Usage ªPower On Resetº Power ManagementIdle Mode CONTROL/STATUS Bits for Power Control ±1 Bit Description PCON.3 Epfw Stop ModeMode Program ALE Psen Memory PIN States in IDLE/STOP Modes ±1 Voltage Monitoring Circuitry Secure Microcontroller Power Cycling Timing ±2 Vpfw threshold is above the specified minimum Power Fail InterruptTotal Power Failure Partial Power Failures Reset Vector Secure Microcontroller Power Management ±3 Timed Access ±1 Timed AccessSoftware Control BIT Name Micro Version Location Description Timed Access Protected Control Bits ±1 050396 66/173 0C7H, #055H 2nd TA Value Watchdog Timer ±2IP.7 CRC Memory Verification Watchdog Timer Control Bits CRC.0 DS5001 CRC Register Address 0C1hRange 3±0 CRC.1 This routine tests the CRC±16 circuit in the DS5001FP CRC Code Example ±3 DS5001 DS5000 DS5002 FeatureFirmware Security Security Overview RAM Memory Security LockEncrypted Memory DS5002 Software Encryption Block Diagram ±2 DS5000 Software Encryption Block Diagram ±1 050396 74/173 Encryption Key Encryption AlgorithmEncryption Key Selection and Loading Dummy BUS Access Timing ±3 Dummy Bus Access Random Number Generator On±chip Vector RAMSelf±Destruct Input Microprobe/Die Top Coating DS5000FP / DS5000T / DS2250T Security Summary by PartDS5001FP / DS2251T Application Advanced Security Techniques External Circuits Change CodeTamper Protection Reset Sources Reset ConditionsReset Status Bits ±1 Reset Condition Reset Type Special Function Register Reset States ±1Register Power on Reset Timing ±2 Power On ResetChanical and some time is required to get the mass External Reset No±VLI Power On ResetWatchdog Timer Reset Memory Interrupts TIMERS/SERIAL Protection Application Reset Routine ExampleMemory Map Timed ± DS5000 only Interrupts Protection TimersTively. Shown here is an example of Timer and Serial Microprocessor disables timer activity excluding Interrupt Source Vector Address Flag Flag Location Interrupt Source Enable BIT LocationInterrupts Interrupt Sources External Interrupts Timer InterruptsPower±fail Warning Interrupt Machine cycle when the interrupts are enabled. INT0 is Interrupt Request Sources ±1 Simulated Interrupts ET0 Interrupt Enable Control Bits ±2 Bit DescriptionEX0 IP.4 Interrupt PrioritiesInterrupt Priority Control Bits ±3 Bit Description Priority Flag Interrupt Source Interrupt Acknowledge Sequence ±4 Interrupt AcknowledgeFlag Vector Address Interrupt Source 050396 94/173 Function Parallel I/O OverviewPort 0 Functional Circuitry ±1 PIN Name Port 2 Functional Circuitry Port 1 Functional Circuitry Output Functions Port 3 Functional Circuitry Input Function Parallel Port Output Buffers Ports 1, 2, and 3 ±2 Port 0 D0±7 READ±MODIFY±WRITE InstructionsReprogrammable Peripheral Controller RPC Mnemonic Description RPC Interrupts USE of the RPC Mode ±3USE of the RPC Mode ±4 Command ST7 ST6 ST5 ST4 IAO IBF OBF RPC Status Register ± Status Address 0DAH ±5 103 RPC ProtocolDMA Operation Dbbout Rpcon bit is set Port 2 becomes the control signals as shown in ±3RPC Control Register ± Rpctl Address 0D8H ±6 RNR Exbs IBI DMA Rpcon RG0 TMOD.6 Timer TMOD.2 Timer Programmable Timers Functional DescriptionTmod Register Control BIT Summary ±1 Bit Description TMOD.5, TMOD.4 Tcon Register CONTROL/STATUS Bits ±2TMOD.1, TMOD.0 107 TIMER/COUNTER Mode 0 and 1 Operation ±3Mode Scribed for TR0, TF0, and INT0 108 TIMER/COUNTER Mode 2 Operation ±4 109 Timer 0 Mode 3 Operation ±5 START/STOP Mode SYNC/ASYNC Baud ClockSerial I/O Function Description Serial Port Operating Modes ±1 ªXmit Bit 8º Mode Function Word Length PeriodMode Sync Bits CLK Async Timer 1 Overflow Serial Port Control Register ±1 Bit Description Baud Rate Generation SCON.2 RB8SCON.1 SCON.0 Baud Rate BPS Timer 1 Baud Rate Generation ±2Synchronous Operation Mode Smod Timer TH1 114 115 Mode 0 Block Diagram and Timing ±2 116 Asynchronous Operation Smod BRG Clock Mode 2117 118 Serial Port Mode 1 Block Diagram ±3 119 MODE2 and 3 Block Diagram ±4 Application Serial Port Initialization Mode Function Word Length Baud ClockSerial I/O Operating Modes PT1 PX1 PT0 PX0 SM0 SM1 SM2 RENTB8 RB8 ET1 EX1 ET0 EX0 TF1 TR1 TF0 TR0 Smod POR PFW WTR Epfw EWT Stop IDLIE1 IT1 IE0 123 XTAL1 CPU Timing OscillatorCrystal Connection ±1 Clock Source Input ±2 125 Instruction Timing Expanded Program Memory Timing BYTE±WIDE RAM Instruction Execution Timing ±3126 127 Expanded Program Memory Fetch ±4 Expanded Data Memory Write ±6 Expanded Data Memory Read ±5128 Complete RD cycle, including activation of ALE and RD Expanded Data Memory Timing129 130 Invoking the Bootstrap LoaderProgram Loading Introduction DS5000FP DS5001/2FP 131 DS5000 SeriesDS5001/DS5002 Series Exiting the Loader MODEM=1 PROG=0 132 Serial Load Configuration ±2 Serial Program Load Mode133 57600 AUTO±BAUD Rate DetectionBaud Rate Crystal Freq MHz 300 1200 2400 Command Function Version Bootstrap Loader InitializationCommand Line Interface Command Line Syntax ABC → 0ABCH Abcd → 0ABCDH Abcde → 0BCDEH Command SummariesBegin±address end±address → 000AH AB → 00ABH P0 value P1 value P2 value P3 value Byte begin±address end±addressByte±1 byte±2 byte±3 byte±4 byte±5 Byte MSL Xon/XoffCRC/MCON/MSL/RPCTL byte Mcon Eillopt Error Messages EargreqEextarg Eillcmd 140 Intel HEX File Format 141 Parallel Program Load Configuration ±3Parallel Program Load Operation Parallel Program Load Cycles ±4 P2.7 P2.6 P2.5 Parallel Program Load ModeMode RST Psen Prog 8751±COMPATIBLE Program Load Cycles ±3 143 RPC Program Mode OperationParallel Programming Concerns Pulses specified, each with a low time of 90 to 144 DS5000T/DS2250T Functional Block Diagram ±1REAL±TIME Clock DS1215 Phantom Time Chip 145 146 Pattern Comparison Register Description ±2 147 DS1215 Register Entry Flowchart ±3 148 DS1215 Time Registers Description ±4Registers Special Bits 149 Time Register Examples ±5 150 DS1283 Watchdog Timekeeper Chip Memory MAP DS2251T/DS2252T RTC Block Diagram ±6151 152 DS1283 REAL±TIME Clock Memory MAP ±7 DS1283 REAL±TIME Clock Command Register ±8 Mask Alarm Maskbit Operation ±9Alarm Condition DS1283 RTC Interrupts 155 Application Using the DS5000T RTC DS1215 Example 156 Wbyte 157 RET 158 159 Application Using the DS2251T RTC DS1283 Example 160 161 162 163 Time Microcontroller Reads the Wrong Time TroubleshootingUnexplained Device Resets RAM Loses Data When Powered Down Serial Port does not Work Unable to Invoke Stop ModeProgram will not Execute DS5000TK KIT does not Respond to KIT5K Software High Current Drain in Stop ModeData is Lost or Corrupted INT0 is Stuck LOW on DS2252T DOS Mnemonic Instruction Code HEX Byte Cycle Explanation Instruction SET Details CLR a CPL a DA a RRC a RL aRLC a RR a Mnemonic Instruction Code HEX Byte ANL C, bit = C and bit CLR bit Bit =Setb bit Bit = CPL bit Bit = bit Reti RETDptr NOP