PC87591L datasheet(19/437 Pages) NSC

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Table of Contents (Continued)

Revision 1.07

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Shared Memory Base Address High Byte Register ........................................... 351

Shared Memory Base Address Low Byte Register ............................................ 352

Shared Memory Size Configuration Register .................................................... 352

6.1.12

Real Time Clock (RTC) Configuration ....................................................................... 353

Logical Device 16 (1016) RTC Configuration ..................................................... 353

RAM Lock Register (RLR) ................................................................................. 353

Date Of Month Alarm Register Offset (DOMAO) ............................................... 354

Month Alarm Register Offset (MONAO) ............................................................ 354

Century Register Offset (CENO) ....................................................................... 354

6.1.13

Power Management Interface Channel 1 Configuration ............................................ 355

Logical Device 17 (1116) Power Management Channel 1 ................................. 355

6.1.14

Power Management Interface Channel 2 Configuration ............................................ 355

Logical Device 18 (1216) Power Management Channel 2 ................................. 355

6.2

REAL-TIME CLOCK (RTC) ..................................................................................................... 356

6.2.1

Bus Interface ............................................................................................................. 356

6.2.2

RTC Clock Generation .............................................................................................. 356

6.2.3

Internal Oscillator ....................................................................................................... 356

6.2.4

External Oscillator ..................................................................................................... 357

Connections ....................................................................................................... 357

Signal Parameters ............................................................................................. 358

6.2.5

Timing Generation ..................................................................................................... 358

6.2.6

Timekeeping .............................................................................................................. 358

6.2.7

Updating .................................................................................................................... 359

6.2.8

Alarms ....................................................................................................................... 359

6.2.9

Power Supply ............................................................................................................ 360

6.2.10

System Bus Lockout .................................................................................................. 361

6.2.11

Power-Up Detection .................................................................................................. 361

6.2.12

Oscillator Activity ....................................................................................................... 362

6.2.13

Interrupt Handling ...................................................................................................... 362

6.2.14

Battery-Backed RAMs and Registers ........................................................................ 363

6.2.15

RTC Registers ........................................................................................................... 363

Seconds Register (SEC) .................................................................................... 364

Seconds Alarm Register (SECA) ....................................................................... 365

Minutes Register (MIN) ...................................................................................... 365

Minutes Alarm Register (MINA) ......................................................................... 365

Hours Register (HOR) ....................................................................................... 365

Hours Alarm Register (HORA) ........................................................................... 366

Day Of Week Register (DOW) ........................................................................... 366

Date Of Month Register (DOM) ......................................................................... 366

Month Register (MON) ....................................................................................... 366

Year Register (YER) .......................................................................................... 367

RTC Control Register A (CRA) .......................................................................... 367

RTC Control Register B (CRB) .......................................................................... 368

RTC Control Register C (CRC) .......................................................................... 369

RTC Control Register D (CRD) .......................................................................... 370

Date of Month Alarm Register (DOMA) ............................................................. 370

Month Alarm Register (MONA) .......................................................................... 370

Century Register (CEN) ..................................................................................... 371

6.2.16

BCD and Binary Formats ........................................................................................... 371

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