NEC PD78214 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
µPD78212 (When EA = L) ...........................................................351
13-7
Data Memory Expansion for
µPD78212 (When EA = H) ..........................................................352
13-8
Data Memory Expansion for
µPD78213 and µPD78214 (When EA = L) .................................353
13-9
Data Memory Expansion for
µPD78214 and µPD78P214 (When EA = H) ..............................354
13-10
Example of Connecting Memories to
µPD78214 .......................................................................356
13-11
Wait Control Space of
µPD78212 (When EA = L) ......................................................................358
13-12
Wait Control Space of
µPD78212 (When EA = H) .....................................................................359
13-13
Wait Control Space of
µPD78213 and µPD78214 (When EA = L) ............................................360
13-14
Wait Control Space of
µPD78214 and µPD78P214 ....................................................................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
µPD78214.......................................................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
Fig. No.
Title, Page