Preliminary Technical Data
ADE75xx/ADE71xx
Addressing Modes.......................................................................77
Instruction set..............................................................................78
Read-Modify-Write Instructions ..............................................81
Instructions that Affect Flags ....................................................81
Interrupt System..............................................................................84
Standard 8051 Interrupt Architecture......................................84
ADE75XX/ADE71XX Interrupt Architecture ........................84
Interrupt SFR register list...........................................................84
Interrupt Priority.........................................................................87
Interrupt Flags .............................................................................87
Interrupt Vectors .........................................................................90
Interrupt Latency ........................................................................90
Context Saving.............................................................................90
Watchdog Timer..............................................................................91
Watchdog Timer Interrupt ....................................................92
LCD Driver ......................................................................................93
LCD SFR Register list .................................................................93
LCD Setup....................................................................................98
LCD Timing and Waveforms.....................................................98
BLINK mode................................................................................98
Software Controlled Blink Mode..........................................98
Automatic Blink Mode...........................................................98
Display Element Control............................................................98
Writing to LCD Data registers ..............................................99
Reading LCD Data registers ..................................................99
Voltage generation ......................................................................99
Power Consumption...............................................................99
Contrast control ......................................................................99
Lifetime Performance.............................................................99
LCD External Circuitry........................................................... 100
LCD Function in PSM2........................................................... 100
Example LCD Setup................................................................. 100
Flash memory ............................................................................... 102
Flash memory Overview..........................................................102
Flash/EE Memory Reliability ..............................................102
Flash memory organization.....................................................102
Using the Flash Memory..........................................................103
ECON—Flash/EE Memory Control SFR ..........................103
Flash functions......................................................................106
Protecting the Flash..................................................................106
Enabling Flash Protection by Code....................................107
Enabling Flash Protection by emulator commands.........107
Notes on Flash Protection....................................................108
Flash memory timing...........................................................108
In circuit programming............................................................108
Serial Downloading..............................................................108
Timers.............................................................................................109
Timer sfr register list ................................................................109
Timer 0 and Timer 1.................................................................112
Timer/Counter 0 and 1 Data Registers..............................112
Timer/Counter 0 and 1 Operating Modes ........................112
Timer 2 .......................................................................................113
Timer/Counter 2 Data Registers.........................................113
Timer/Counter 2 Operating Modes...................................113
PLL ..................................................................................................115
PLL SFR register list..................................................................115
RTC - Real Time Clock ................................................................117
RTC SFR register list.................................................................117
Read and Write operations ......................................................120
Writing the RTC Registers...................................................120
Reading the RTC Counter SFRs .........................................120
RTC Modes ................................................................................121
RTC Interrupts ..........................................................................121
Interval Timer Alarm ...........................................................121
RTC Calibration........................................................................121
UART serial interface ...................................................................123
Rev. PrE | Page 5 of 148
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