Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

UPD784938 Datasheet(PDF) 97 Page - NEC

Part # UPD784938
Description  16-Bit Single-Chip Microcontrollers
Download  733 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD784938 Datasheet(HTML) 97 Page - NEC

Back Button UPD784938 Datasheet HTML 93Page - NEC UPD784938 Datasheet HTML 94Page - NEC UPD784938 Datasheet HTML 95Page - NEC UPD784938 Datasheet HTML 96Page - NEC UPD784938 Datasheet HTML 97Page - NEC UPD784938 Datasheet HTML 98Page - NEC UPD784938 Datasheet HTML 99Page - NEC UPD784938 Datasheet HTML 100Page - NEC UPD784938 Datasheet HTML 101Page - NEC Next Button
Zoom Inzoom in Zoom Outzoom out
 97 / 733 page
background image
97
CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U13987EJ1V0UM00
3.9 Special Function Registers (SFR)
These are registers to which a special function is assigned, such as on-chip peripheral hardware mode registers, control
registers, etc. They are mapped onto the 256-byte space from 0FF00H to 0FFFFHNote.
Note
When the LOCATION 0 instruction is executed. When the LOCATION 0FH instruction is executed, the area is
FFF00H to FFFFFH.
Caution
Addresses onto which SFRs are not assigned should not be accessed in this area. If such an address is
as accessed by mistake, the
µPD784938 may become deadlocked. A deadlock can only be released by
reset input.
A list of special function registers (SFRs) is given in Table 3-6. The meaning of the items in the table is as explained below.
• Symbol ............................... Symbol that indicates the incorporated SFR. This is a reserved word in the NEC assembler
(RA78K4). With the C compiler (CC78K4), this symbol can be used as an sfr variable by
means of a #pragma sfr command.
• R/W .................................... Indicates whether the corresponding SFR is read/write enabled.
R/W: Read/write enabled
R:
Read-only
W:
Write-only
• Manipulable Bit Units ......... Indicates the applicable manipulation bit units when the corresponding SFR is manipulated.
A 16-bit-manipulable SFR can be written in the operand “sfrp”, and when specified by an
address, an even address is specified.
A bit-manipulable SFR can be written in a bit manipulation instruction.
• After Reset ......................... Indicates the status of the register after RESET input.


Similar Part No. - UPD784938

ManufacturerPart #DatasheetDescription
logo
NEC
UPD784938A NEC-UPD784938A Datasheet
371Kb / 52P
   16-BIT SINGLE-CHIP MICROCONTROLLER
logo
Renesas Technology Corp
UPD784938AGF-XXX-3BA RENESAS-UPD784938AGF-XXX-3BA Datasheet
692Kb / 104P
   MOS INTEGRATED CIRCUITS
2001
More results

Similar Description - UPD784938

ManufacturerPart #DatasheetDescription
logo
Renesas Technology Corp
UPD78F1502AGK-GAK-AX RENESAS-UPD78F1502AGK-GAK-AX Datasheet
6Mb / 1031P
   16-Bit Single-Chip Microcontrollers
logo
NEC
UPD784214A NEC-UPD784214A Datasheet
561Kb / 50P
   16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784915A NEC-UPD784915A Datasheet
446Kb / 86P
   16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784915B NEC-UPD784915B Datasheet
384Kb / 86P
   16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224 NEC-UPD784224 Datasheet
687Kb / 92P
   16/8-BIT SINGLE-CHIP MICROCONTROLLERS
logo
Siemens Semiconductor G...
C167CR-16RM SIEMENS-C167CR-16RM Datasheet
1Mb / 67P
   16-Bit CMOS Single-Chip Microcontrollers
logo
NEC
UPD78363A NEC-UPD78363A Datasheet
502Kb / 96P
   16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784035Y NEC-UPD784035Y Datasheet
503Kb / 94P
   16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784218 NEC-UPD784218 Datasheet
617Kb / 92P
   16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
logo
Siemens Semiconductor G...
C161V SIEMENS-C161V_96 Datasheet
3Mb / 260P
   16-Bit CMOS Single-Chip Microcontrollers
More results


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

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com