Maxim DS87C530 Guia do Utilizador

1 of 45 REV: 071107 Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisio

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 10 of 45 Table 1. Special Function Register Locations (continued) * Functions not

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 11 of 45 automatically to occur once per second, once per minute, once per hour,

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 12 of 45 12.5pF crystal uses more power, giving a shorter battery backed life, bu

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 13 of 45 space SRAM is read/write accessible and is memory mapped. This on-chip S

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 14 of 45 device will immediately jump to external program execution because progr

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 15 of 45 The on-chip data area is software selectable using 2 bits in the Power M

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 16 of 45 Using a Stretch value between 1 and 7 causes the microcontroller to stre

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 17 of 45 POWER MANAGEMENT Along with the standard Idle and power-down (Stop) mode

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 18 of 45 CRYSTAL-LESS PMM A major component of power consumption in PMM is the cr

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 19 of 45 Switchback To return to a 4-clock rate from PMM, software can simply sel

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 2 of 45 ORDERING INFORMATION PART TEMP RANGE MAX CLOCK SPEED (MHz) PIN-PACKAGE D

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 20 of 45 Crystal/Ring Operation The DS87C530/DS83C530 allow software to choose th

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 21 of 45 Table 6. PMM Control and Status Bit Summary NAME LOCATION FUNCTION RES

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 22 of 45 Figure 5. Invoking and Clearing PMM

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 23 of 45 IDLE MODE Setting the lsb of the Power Control register (PCON; 87h) invo

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 24 of 45 The ring oscillator runs at approximately 2MHz to 4MHz but will not be a

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 25 of 45 PERIPHERAL OVERVIEW The DS87C530/DS83C530 provide several of the most co

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 26 of 45 read the PFI flag at WDCON.4. A PFI condition sets this bit to a 1. The

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 27 of 45 There are five control bits in special function registers that affect th

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 28 of 45 TIMED-ACCESS PROTECTION It is useful to protect certain SFR bits from an

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 29 of 45 DS87C530 SECURITY OPTIONS The DS87C530 employs a standard three-level lo

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 3 of 45 DETAILED DESCRIPTION The DS87C530/DS83C530 EPROM/ROM microcontrollers wit

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 30 of 45 Table 9. EPROM Programming Modes MODE RST PSEN ALE/PROG EA/VPP P2.6 P2.

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 31 of 45 Figure 7. EPROM Programming Configuration ROM-SPECIFIC FEATURES (DS

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 32 of 45 DS83C530 ROM Verification The DS83C530 memory contents can be verified u

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 33 of 45 ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground…………

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 34 of 45 DC ELECTRICAL CHARACTERISTICS (continued) (VCC = 4.5V to 5.5V, TA = -40°

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 35 of 45 AC ELECTRICAL CHARACTERISTICS (Note 1) 33MHz VARIABLE CLOCK PARAMETER SY

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 36 of 45 MOVX CHARACTERISTICS USING STRETCH MEMORY CYCLES VARIABLE CLOCK PARAMETE

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 37 of 45 MOVX CHARACTERISTICS USING STRETCH MEMORY CYCLES (continued) M2 M1 M0

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 38 of 45 EXPLANATION OF AC SYMBOLS In an effort to remain compatible with the ori

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 39 of 45 EXTERNAL PROGRAM MEMORY READ CYCLE EXTERNAL DATA MEMORY READ CY

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 4 of 45 Figure 1. Block Diagram PIN DESCRIPTION PIN PLCC TQFP NAME FUNCTION 5

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 40 of 45 DATA MEMORY WRITE CYCLE DATA MEMORY WRITE WITH STRETCH = 1 tAV

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 41 of 45 DATA MEMORY WRITE WITH STRETCH = 2 EXTERNAL CLOCK DRIVE

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 42 of 45 SERIAL PORT MODE 0 TIMING

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 43 of 45 POWER-CYCLE TIMING EPROM PROGRAMMING AND VERIFICATION WAVEFORMS

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 44 of 45 PACKAGE INFORMATION For the latest package outline information and land

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 45 of 45 Maxim/Dallas Semiconductor cannot assume responsibility for use of any ci

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 5 of 45 PIN DESCRIPTION (continued) PIN PLCC TQFP NAME FUNCTION 38 31 PSEN Progra

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 6 of 45 PIN DESCRIPTION (continued) PIN PLCC TQFP NAME FUNCTION 30 23 P2.0 (AD8)

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 7 of 45 COMPATIBILITY The DS87C530/DS83C530 are fully static, CMOS 8051-compatibl

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 8 of 45 The relative time of two instructions might be different in the new archi

DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock 9 of 45 Table 1. Special Function Register Locations * Functions not present in