Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

38K0 Datasheet(PDF) 6 Page - Renesas Technology Corp

Part No. 38K0
Description  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Download  133 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo 

38K0 Datasheet(HTML) 6 Page - Renesas Technology Corp

Zoom Inzoom in Zoom Outzoom out
 6 / 133 page
background image
38K0 Group
Rev.3.00
Oct 05, 2006
page 6 of 129
REJ03B0192-0300
FUNCTIONAL DESCRIPTION
CENTRAL PROCESSING UNIT (CPU)
The 38K0 group uses the standard 740 family instruction set. Re-
fer to the table of 740 family addressing modes and machine
instructions or the 740 Family Software Manual for details on the
instruction set.
Machine-resident 740 family instructions are as follows:
The FST and SLW instruction cannot be used.
The STP, WIT, MUL, and DIV instruction can be used.
The CPU has the 6 registers. The register structure is shown in
Figure 5.
[Accumulator (A)]
The accumulator is an 8-bit register. Data operations such as data
transfer, etc., are executed mainly through the accumulator.
[Index Register X (X)]
The index register X is an 8-bit register. In the index addressing
modes, the value of the OPERAND is added to the contents of
register X and specifies the real address.
[Index Register Y (Y)]
The index register Y is an 8-bit register. In partial instruction, the
value of the OPERAND is added to the contents of register Y and
specifies the real address.
[Stack Pointer (S)]
The stack pointer is an 8-bit register used during subroutine calls
and interrupts. This register indicates start address of stored area
(stack) for storing registers during subroutine calls and interrupts.
The low-order 8 bits of the stack address are determined by the
contents of the stack pointer. The high-order 8 bits of the stack
address are determined by the stack page selection bit. If the
stack page selection bit is “0” , the high-order 8 bits becomes
“0016”. If the stack page selection bit is “1”, the high-order 8 bits
becomes “0116”.
Figure 6 shows the store and the return movement into the stack.
If there are registers other than those described in Figure 5, the
users need to store them with the program.
[Program Counter (PC)]
The program counter is a 16-bit counter consisting of two 8-bit
registers PCH and PCL. It is used to indicate the address of the
next instruction to be executed.
Fig. 5 740 Family CPU register structure
A
Accumulator
b7
b7
b7
b7
b0
b7
b15
b0
b7
b0
b0
b0
b0
X
Index register X
Y
Index register Y
S
Stack pointer
PCL
Program counter
PCH
N V T B D I Z C
Processor status register (PS)
Carry flag
Zero flag
Interrupt disable flag
Decimal mode flag
Break flag
Index X mode flag
Overflow flag
Negative flag


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



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
3803LSINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
M37151SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER 1 2 3 4 5 MoreRenesas Technology Corp
M37450M2SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 Mitsubishi Electric Semiconductor
3804HSINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
3826ASINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
3826OTPSINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
38D2SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
38D5_08SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp
3823SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 2 3 4 5 MoreRenesas Technology Corp

Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   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