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UPD784938 Datasheet(PDF) 18 Page - NEC

Part # UPD784938
Description  16-Bit Single-Chip Microcontrollers
Download  733 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD784938 Datasheet(HTML) 18 Page - NEC

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18
Preliminary User’s Manual U13987EJ1V0UM00
16.3
A/D Current Cut Select Register (IEAD) ...............................................................................
410
16.4
Operation ..................................................................................................................................
411
16.4.1
Basic A/D converter operation .....................................................................................................
411
16.4.2
Select mode .................................................................................................................................
415
16.4.3
Scan mode ...................................................................................................................................
416
16.4.4
A/D conversion operation start by software ................................................................................
418
16.4.5
A/D conversion operation start by hardware ..............................................................................
420
16.5
External Circuit of A/D Converter ..........................................................................................
423
16.6
Cautions ....................................................................................................................................
423
CHAPTER 17
OUTLINE OF SERIAL INTERFACE ............................................................................
425
CHAPTER 18
ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O ...............................
427
18.1
Switching between Asynchronous Serial Interface Mode and 3-Wire Serial I/O Mode .
428
18.2
Asynchronous Serial Interface Mode ...................................................................................
429
18.2.1
Configuration in asynchronous serial interface mode ................................................................
429
18.2.2
Asynchronous serial interface control registers .........................................................................
432
18.2.3
Data format ...................................................................................................................................
435
18.2.4
Parity types and operations .........................................................................................................
436
18.2.5
Transmission ................................................................................................................................
437
18.2.6
Reception .....................................................................................................................................
438
18.2.7
Receive errors ..............................................................................................................................
439
18.3
3-Wire Serial I/O Mode ............................................................................................................
440
18.3.1
Configuration in 3-wire serial I/O mode ......................................................................................
440
18.3.2
Clocked serial interface mode registers (CSIM1, CSIM2) .........................................................
443
18.3.3
Basic operation timing .................................................................................................................
444
18.3.4
Operation when transmission only is enabled ............................................................................
446
18.3.5
Operation when reception only is enabled .................................................................................
446
18.3.6
Operation when transmission/reception is enabled ...................................................................
447
18.3.7
Corrective action in case of slippage of serial clock and shift operations ................................
447
18.4
Baud Rate Generator ...............................................................................................................
448
18.4.1
Baud rate generator configuration ..............................................................................................
448
18.4.2
Baud rate generator control register (BRGC, BRGC2) ..............................................................
450
18.4.3
Baud rate generator operation ....................................................................................................
452
18.4.4
Baud rate setting in asynchronous serial interface mode ..........................................................
454
18.5
Cautions ....................................................................................................................................
456
CHAPTER 19
3-WIRE SERIAL I/O MODE .........................................................................................
457
19.1
Function ....................................................................................................................................
457
19.2
Configuration ............................................................................................................................
458
19.3
Control Registers .....................................................................................................................
459
19.3.1
Clocked serial interface mode register (CSIM, CSIM3) .............................................................
459
19.4
3-Wire Serial I/O Mode ............................................................................................................
461
19.4.1
Basic operation timing .................................................................................................................
462
19.4.2
Operation when transmission only is enabled ............................................................................
464
19.4.3
Operation when reception only is enabled .................................................................................
465
19.4.4
Operation when transmission/reception is enabled ...................................................................
465
19.4.5
Corrective action in case of slippage of serial clock and shift operations ................................
465


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