Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

UPD780138 Datasheet(PDF) 93 Page - NEC

No. de Pieza. UPD780138
Descripción  8-Bit Single-Chip Microcontrollers
Descarga  558 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo 

UPD780138 Datasheet(HTML) 93 Page - NEC

Zoom Inzoom in Zoom Outzoom out
 93 / 558 page
background image
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16228EJ2V0UD
93
4.2.1 Port 0
Port 0 is a 7-bit I/O port with an output latch. Port 0 can be set to the input mode or output mode in 1-bit units
using port mode register 0 (PM0). When the P00 to P06 pins are used as an input port, use of an on-chip pull-up
resistor can be specified in 1-bit units by pull-up resistor option register 0 (PU0).
This port can also be used for timer I/O, serial interface data I/O, and clock I/O.
RESET input sets port 0 to input mode.
Figures 4-2 to 4-5 show block diagrams of port 0.
Caution
When P02/SO11
Note, P03/SI11Note, and P04/SCK11Note are used as general-purpose ports, do not
write to serial clock selection register 11 (CSIC11).
Figure 4-2. Block Diagram of P00, P03, and P05
P00/TI000,
P03/SI11
Note,
P05/SSI11
Note/TI001Note
WRPU
RD
WRPORT
WRPM
PU00, PU03, PU05
Alternate function
Output latch
(P00, P03, P05)
PM00, PM03, PM05
EVDD
P-ch
PU0
PM0
Note Available only in the
µPD780133, 780134, 78F0134, 780136, 780138, and 78F0138.
PU0:
Pull-up resistor option register 0
PM0:
Port mode register 0
RD:
Read signal
WR
××: Write signal


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99  100   ...More


Datasheet Download




Enlace URL




Privacy Policy
ALLDATASHEET.ES
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn