Table of Contents
Introduction
Software Security
Separate ADDRESS/DATA BUS
IN±SYSTEM Loading
Large Nonvolatile Memory
High Reliability Operation
Module Description ON±BOARD Memory Package
DS5000FP Soft Microprocessor Chip
Product Description
DS5000T Soft Microcontroller Module
DS2250T Soft Microcontroller Module
DS2251T 128K Soft Microcontroller Module
DS5002FP Secure Microprocessor Chip
DS2252T Secure Microcontroller Module
Chip Description Maximum Speed Part Number
Selection Guide
Module Description
Speed Clock Part Number
Secure Microcontroller Architecture
Secure Microcontroller Architectural Block Diagram Figure
Parallel I/O
Timed Access Logic
Program/Data RAM Interface
High±Reliability Circuitry
Resident Loader ROM
Watchdog Timer
Secure Microcontroller Memory Organization
Programmers Guide
Secure Microcontroller Memory MAP ±1
Internal Registers
Scratchpad Register MAP ±2
Program and Data Memory
PSW.4±3 R1±R0 Register Bank Select
Bank Starting Address R0
Important Application Note
DS5000 Series Memory Organization
DS5000 Series Memory MAP ±3
Memory map. The first is the EA pin. The second is
Overrides the condition of the EA pin as well
DS5000 Memory Map Control
DS5000 Series Mcon Register ±4 Bit Description
PA3
MCON.3
DS5001/DS5002 Memory Organization
RA32/8
MCON.2 ECE2
PA3 PA2 PA1 PA0 Partition BYTE±WIDE BUS Memory MAP
RG1 RG0 Range CE1 Access CE2 Access
Partitionable Memory MAP for DS5001/DS5002 Series ±5
Msel RG1 RG0 Program Data Program Access Data Access
CE1 CE3 CE4
CE1 CE2 CE3
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
PA3 PA2 PA1 PA0 RG1 PES
DS5001/DS5002 Series Mcon Register ±8
MCON.3 RG1
MCON.2 PES
RPCTL.5 Exbs
Loading and Reloading Program Memory
RPCTL.4
RPCTL.0 RG0
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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.2 EWT
PCON.3EPFW
PCON.1 Stop
PCON.0 IDL
Label Tcon Register Address 088H
Timer Control Register
Label Tmod Register Address 089H
Timer Mode Register
TCON.0 IT0
Gate
LabelSCON Register Address 098H
Serial Control Register
LabelIE Register Address 0A8H
Interrupt Enable Register
SCON.0
ET1
LabelIP Register Address 0B8H
Interrupt Priority Register
Label CRC Register Address 0C1H
DS5001 CRC Register
RNGE3±0
CRC.1 MDM
LabelMCON Register Address 0C6H
DS5000 Memory Control Register
PA3 PA2 PA1 PA0
RA32/8
DS5001 Mcon Register
Label Mcon Register Address 0C6H
MCON.0
Accessed by Movx instructions on the Byte±wide bus
LabelPSW Register Address 0D0H
Program Status Word Register
Label Rpctl Register Address 0D8H
DS5001/DS5002 RPC Control Register
RPCTL.7 RNR
RPCTL.3 IBI
Label RPS Register Address 0DAH
DS5001/DS5002 RPC Status Register
RPCTL.1 Rpcon
IA0
IBF
RPS.1
RPS.0
OBF
Addressing Modes
Instruction SET
ADD A, R4
Setb 00H
Addressing
±20 Branch to the location PC+2 ±
Acall 100H Call to the subroutine at
Address
Instructions That Affect Flag Settings
Program Status Flags
Flags Instruction OV AC
Recommended SRAMs for USE with Soft Microcontrollers ±1
Memory Interconnect
Data Reten Part Tion Current RAM Size Vendor
25C 40C 70C
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
LITHIUM/BATTERY Backup
Battery Backed Circuits
Data Retention
Battery Attach Procedure
Power Supply Slew Rate ±1
Battery Lifetime
Battery attached
54 * 10±3
180 * 10±3
2400 + 75 * 10±9 * 24 21.68 * 10±3
Freshness Seal
Lithium Battery Usage
Idle Mode
Power Management
CONTROL/STATUS Bits for Power Control ±1 Bit Description
ªPower On Resetº
Mode Program ALE Psen Memory
Stop Mode
PIN States in IDLE/STOP Modes ±1
PCON.3 Epfw
Voltage Monitoring Circuitry
Secure Microcontroller Power Cycling Timing ±2
Total Power Failure
Power Fail Interrupt
Partial Power Failures
Vpfw threshold is above the specified minimum
Reset Vector
Secure Microcontroller Power Management ±3
Timed Access
Timed Access ±1
Software Control
BIT Name Micro Version Location Description
Timed Access Protected Control Bits ±1
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Watchdog Timer ±2
0C7H, #055H 2nd TA Value
IP.7
CRC Memory Verification
Watchdog Timer Control Bits
Range 3±0
DS5001 CRC Register Address 0C1h
CRC.1
CRC.0
This routine tests the CRC±16 circuit in the DS5001FP
CRC Code Example ±3
Firmware Security
Feature
Security Overview
DS5001 DS5000 DS5002
Security Lock
RAM Memory
Encrypted Memory
DS5002 Software Encryption Block Diagram ±2
DS5000 Software Encryption Block Diagram ±1
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Encryption Algorithm
Encryption Key
Encryption Key Selection and Loading
Dummy BUS Access Timing ±3
Dummy Bus Access
Self±Destruct Input
On±chip Vector RAM
Microprobe/Die Top Coating
Random Number Generator
Security Summary by Part
DS5000FP / DS5000T / DS2250T
DS5001FP / DS2251T
Application Advanced Security Techniques
Change Code
External Circuits
Tamper Protection
Reset Conditions
Reset Sources
Reset Status Bits ±1
Special Function Register Reset States ±1
Reset Condition Reset Type
Register
Power On Reset
Power on Reset Timing ±2
Chanical and some time is required to get the mass
No±VLI Power On Reset
External Reset
Watchdog Timer Reset
Application Reset Routine Example
Memory Interrupts TIMERS/SERIAL Protection
Memory Map
Timed ± DS5000 only
Interrupts
Tively. Shown here is an example of Timer and Serial
Timers
Microprocessor disables timer activity excluding
Protection
Interrupts
Interrupt Source Enable BIT Location
Interrupt Sources
Interrupt Source Vector Address Flag Flag Location
Power±fail Warning Interrupt
Timer Interrupts
Machine cycle when the interrupts are enabled. INT0 is
External Interrupts
Interrupt Request Sources ±1
Simulated Interrupts
Interrupt Enable Control Bits ±2 Bit Description
ET0
EX0
Interrupt Priority Control Bits ±3 Bit Description
Interrupt Priorities
Priority Flag Interrupt Source
IP.4
Interrupt Acknowledge
Interrupt Acknowledge Sequence ±4
Flag Vector Address Interrupt Source
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Port 0 Functional Circuitry ±1
Parallel I/O Overview
PIN Name
Function
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
Reprogrammable Peripheral Controller RPC
READ±MODIFY±WRITE Instructions
Mnemonic Description
Port 0 D0±7
USE of the RPC Mode ±4
USE of the RPC Mode ±3
Command
RPC Interrupts
ST7 ST6 ST5 ST4 IAO IBF OBF
RPC Status Register ± Status Address 0DAH ±5
DMA Operation
RPC Protocol
Dbbout
103
RPC Control Register ± Rpctl Address 0D8H ±6
Port 2 becomes the control signals as shown in ±3
RNR Exbs IBI DMA Rpcon RG0
Rpcon bit is set
Programmable Timers Functional Description
TMOD.6 Timer TMOD.2 Timer
Tmod Register Control BIT Summary ±1 Bit Description
Tcon Register CONTROL/STATUS Bits ±2
TMOD.5, TMOD.4
TMOD.1, TMOD.0
Mode
TIMER/COUNTER Mode 0 and 1 Operation ±3
Scribed for TR0, TF0, and INT0
107
108
TIMER/COUNTER Mode 2 Operation ±4
109
Timer 0 Mode 3 Operation ±5
Serial I/O Function Description
Mode SYNC/ASYNC Baud Clock
Serial Port Operating Modes ±1
START/STOP
Mode Sync Bits CLK Async Timer 1 Overflow
Mode Function Word Length Period
Serial Port Control Register ±1 Bit Description
ªXmit Bit 8º
SCON.1
SCON.2 RB8
SCON.0
Baud Rate Generation
Synchronous Operation Mode
Timer 1 Baud Rate Generation ±2
Smod Timer TH1
Baud Rate BPS
114
115
Mode 0 Block Diagram and Timing ±2
116
Asynchronous Operation
Mode 2
Smod BRG Clock
117
118
Serial Port Mode 1 Block Diagram ±3
119
MODE2 and 3 Block Diagram ±4
Mode Function Word Length Baud Clock
Application Serial Port Initialization
Serial I/O Operating Modes
TB8 RB8
SM0 SM1 SM2 REN
ET1 EX1 ET0 EX0
PT1 PX1 PT0 PX0
Smod POR PFW WTR Epfw EWT Stop IDL
TF1 TR1 TF0 TR0
IE1 IT1 IE0
123
Crystal Connection ±1
CPU Timing Oscillator
Clock Source Input ±2
XTAL1
125
Instruction Timing
BYTE±WIDE RAM Instruction Execution Timing ±3
Expanded Program Memory Timing
126
127
Expanded Program Memory Fetch ±4
Expanded Data Memory Read ±5
Expanded Data Memory Write ±6
128
Expanded Data Memory Timing
Complete RD cycle, including activation of ALE and RD
129
Program Loading Introduction
Invoking the Bootstrap Loader
DS5000FP DS5001/2FP
130
DS5001/DS5002 Series
DS5000 Series
Exiting the Loader
131
MODEM=1 PROG=0
132
Serial Program Load Mode
Serial Load Configuration ±2
133
Baud Rate
AUTO±BAUD Rate Detection
Crystal Freq MHz 300 1200 2400
57600
Command Line Interface
Bootstrap Loader Initialization
Command Line Syntax
Command Function Version
Begin±address end±address
Command Summaries
→ 000AH AB → 00ABH
ABC → 0ABCH Abcd → 0ABCDH Abcde → 0BCDEH
Byte±1 byte±2 byte±3 byte±4 byte±5
Byte begin±address end±address
Byte
P0 value P1 value P2 value P3 value
CRC/MCON/MSL/RPCTL byte
Xon/Xoff
Mcon
MSL
Eextarg
Error Messages Eargreq
Eillcmd
Eillopt
140
Intel HEX File Format
Parallel Program Load Operation
Parallel Program Load Configuration ±3
Parallel Program Load Cycles ±4
141
Mode RST Psen Prog
Parallel Program Load Mode
8751±COMPATIBLE Program Load Cycles ±3
P2.7 P2.6 P2.5
Parallel Programming Concerns
RPC Program Mode Operation
Pulses specified, each with a low time of 90 to
143
REAL±TIME Clock
DS5000T/DS2250T Functional Block Diagram ±1
DS1215 Phantom Time Chip
144
145
146
Pattern Comparison Register Description ±2
147
DS1215 Register Entry Flowchart ±3
Registers
DS1215 Time Registers Description ±4
Special Bits
148
149
Time Register Examples ±5
150
DS1283 Watchdog Timekeeper Chip
DS2251T/DS2252T RTC Block Diagram ±6
Memory MAP
151
152
DS1283 REAL±TIME Clock Memory MAP ±7
DS1283 REAL±TIME Clock Command Register ±8
Alarm Condition
Alarm Maskbit Operation ±9
DS1283 RTC Interrupts
Mask
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
Unexplained Device Resets
Troubleshooting
RAM Loses Data When Powered Down
Time Microcontroller Reads the Wrong Time
Unable to Invoke Stop Mode
Serial Port does not Work
Program will not Execute
Data is Lost or Corrupted
High Current Drain in Stop Mode
INT0 is Stuck LOW on DS2252T
DS5000TK KIT does not Respond to KIT5K Software
DOS
Mnemonic Instruction Code HEX Byte Cycle Explanation
Instruction SET Details
CLR a CPL a
DA a
RLC a
RL a
RR a
RRC a
Mnemonic Instruction Code HEX Byte
Setb bit Bit =
CLR bit Bit =
CPL bit Bit = bit
ANL C, bit = C and bit
RET
Reti
Dptr
NOP