Electronics America Computer Hardware User Manual
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Contents
13-1 Format of the Memory Expansion Mode Register (MM) .........................................................346
13-2 Format of Programmable Wait Control Register (PW) .............................................................347
13-3 Read Timing ...................................................................................................................................348
13-4 Write Timing ..................................................................................................................................348
13-5 Accessing Expansion Data Memory ...........................................................................................349
13-6 Data Memory Expansion for
µ
PD78212 (When EA = L) ...........................................................351
13-7 Data Memory Expansion for
µ
PD78212 (When EA = H) ..........................................................352
13-8 Data Memory Expansion for
µ
PD78213 and
µ
PD78214 (When EA = L) .................................353
13-9 Data Memory Expansion for
µ
PD78214 and
µ
PD78P214 (When EA = H) ..............................354
13-10 Example of Connecting Memories to
µ
PD78214 .......................................................................356
13-11 Wait Control Space of
µ
PD78212 (When EA = L) ......................................................................358
13-12 Wait Control Space of
µ
PD78212 (When EA = H) .....................................................................359
13-13 Wait Control Space of
µ
PD78213 and
µ
PD78214 (When EA = L) ............................................360
13-14 Wait Control Space of
µ
PD78214 and
µ
PD78P214 ....................................................................361
13-15 Read Timing of Programmable Wait Function ..........................................................................362
13-16 Write Timing of Programmable Wait Function .........................................................................364
13-17 Timing When External Wait Signal Is Used ..............................................................................366
13-18 Format of Refresh Mode Register (RFM) ...................................................................................367
13-19 Pulse Refresh When Internal Memory Is Accessed ..................................................................368
13-20 Pulse Refresh When External Memory Is Accessed .................................................................369
13-21 Restoration Timing from Self-Refresh........................................................................................370
13-22 Return from Self-Refresh .............................................................................................................371
13-23 Example of Connecting Pseudo Static RAM to
µ
PD78214.......................................................372
13-24 Return from Self-Refresh .............................................................................................................374
13-25 Glitch Observed on Pins A16 to A19 during Emulation ...........................................................374
13-26 Insufficient Address Hold Time during Emulation ................................................................... 374
13-27 Preventing Problems That May Occur during Emulation ........................................................375
14-1 Transition Diagram for the Standby Modes ..............................................................................377
14-2 Standby Function Block ................................................................................................................378
14-3 Configuration of the Standby Control Register (STBC) ...........................................................379
14-4 Releasing STOP Mode with an NMI Signal ...............................................................................383
14-5 Example of Longer Oscillation Settling Time ............................................................................383
14-6 Example of Address Bus Arrangement ......................................................................................385
14-7 Example Address/Data Bus Arrangement ..................................................................................385
14-8 Example Arrangement for Analog Input Pin .............................................................................386
14-9 Example of Longer Oscillation Settling Time ............................................................................387
15-1 Acceptance of the RESET Signal .................................................................................................389
15-2 Reset Operation at Power-On ......................................................................................................389
15-3 Timing Charts for Reset Operation .............................................................................................393
16-1 Example of Controlling Two Stepper Motors............................................................................396
16-2 Example System Configuration Using the Serial Bus Interface .............................................397
16-3 Example of Communication with SBI .........................................................................................398
16-4 Serial Bus Communication Timing .............................................................................................398
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