Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

MC68HC912BL16 Datasheet(PDF) 8 Page - NXP Semiconductors

Part # MC68HC912BL16
Description  16-Bit Microcontroller
Download  128 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MC68HC912BL16 Datasheet(HTML) 8 Page - NXP Semiconductors

Back Button MC68HC912BL16 Datasheet HTML 4Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 5Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 6Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 7Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 8Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 9Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 10Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 11Page - NXP Semiconductors MC68HC912BL16 Datasheet HTML 12Page - NXP Semiconductors Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 128 page
background image
MC68HC912BL16
8
MC68HC912BL16TS/D
2.4 Indexed Addressing Modes
The CPU12 indexed modes reduce execution time and eliminate code size penalties for using the Y
index register. CPU12 indexed addressing uses a postbyte plus zero, one, or two extension bytes after
the instruction opcode. The postbyte and extensions do the following tasks:
• Specify which index register is used
• Determine whether a value in an accumulator is used as an offset
• Enable automatic pre- or post-increment or decrement
• Specify use of 5-bit, 9-bit, or 16-bit signed offsets
2.5 Opcodes and Operands
The CPU12 uses 8-bit opcodes. Each opcode identifies a particular instruction and associated address-
ing mode to the CPU. Several opcodes are required to provide each instruction with a range of address-
ing capabilities.
Only 256 opcodes would be available if the range of values were restricted to the number that can be
represented by 8-bit binary numbers. To expand the number of opcodes, a second page is added to the
opcode map. Opcodes on the second page are preceded by an additional byte with the value $18.
To provide additional addressing flexibility, opcodes can also be followed by a postbyte or extension
bytes. Postbytes implement certain forms of indexed addressing, transfers, exchanges, and loop prim-
itives. Extension bytes contain additional program information such as addresses, offsets, and immedi-
ate data.
Table 3 Summary of Indexed Operations
Postbyte
Code (xb)
Source Code
Syntax
Comments
rr; 00 = X, 01 = Y, 10 = SP, 11 = PC
rr0nnnnn
,r
n,r
−n,r
5-bit constant offset n = –16 to +15
r can specify X, Y, SP, or PC
111rr0zs
n,r
−n,r
Constant offset (9- or 16-bit signed)
z-
0 = 9-bit with sign in LSB of postbyte(s)
-256 < n < 255
1 = 16-bit
0 < n < 65,535
if z = s = 1, 16-bit offset indexed-indirect (see below)
r can specify X, Y, SP, or PC
111rr011
[n,r]
16-bit offset indexed-indirect
rr can specify X, Y, SP, or PC
0 < n < 65,535
rr1pnnnn
n,
−r
n,
+r
n,r
n,r
+
Auto pre-decrement/increment or Auto post-decrement/increment;
p = pre-(0) or post-(1), n = –8 to –1, +1 to +8
r can specify X, Y, or SP (PC not a valid choice)
+8 = 0111
+1 = 0000
-1 = 1111
-8 = 1000
111rr1aa
A,r
B,r
D,r
Accumulator offset (unsigned 8-bit or 16-bit)
aa- 00 = A
01 = B
10 = D (16-bit)
11 = see accumulator D offset indexed-indirect
r can specify X, Y, SP, or PC
111rr111
[D,r]
Accumulator D offset indexed-indirect
r can specify X, Y, SP, or PC
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


Similar Part No. - MC68HC912BL16

ManufacturerPart #DatasheetDescription
logo
Freescale Semiconductor...
MC68HC912BL16 FREESCALE-MC68HC912BL16 Datasheet
3Mb / 128P
   16-Bit Microcontroller
MC68HC912BL16CFU8 FREESCALE-MC68HC912BL16CFU8 Datasheet
3Mb / 128P
   16-Bit Microcontroller
MC68HC912BL16FU8 FREESCALE-MC68HC912BL16FU8 Datasheet
3Mb / 128P
   16-Bit Microcontroller
MC68HC912BL16MFU8 FREESCALE-MC68HC912BL16MFU8 Datasheet
3Mb / 128P
   16-Bit Microcontroller
MC68HC912BL16VFU8 FREESCALE-MC68HC912BL16VFU8 Datasheet
3Mb / 128P
   16-Bit Microcontroller
More results

Similar Description - MC68HC912BL16

ManufacturerPart #DatasheetDescription
logo
Motorola, Inc
MC9S12B MOTOROLA-MC9S12B Datasheet
322Kb / 12P
   16-Bit Microcontroller
logo
Fujitsu Component Limit...
MB90580 FUJITSU-MB90580 Datasheet
3Mb / 395P
   16-BIT MICROCONTROLLER
logo
OKI electronic componet...
MSM66577 OKI-MSM66577 Datasheet
213Kb / 34P
   16-Bit Microcontroller
logo
ON Semiconductor
LC88FC2H0A ONSEMI-LC88FC2H0A Datasheet
433Kb / 48P
   16-bit Microcontroller
June, 2013 Ver.1.00
LC88FC2H0B ONSEMI-LC88FC2H0B Datasheet
421Kb / 47P
   16-bit Microcontroller
January 2015 - Rev. 1
logo
Motorola, Inc
MC68HC916X1 MOTOROLA-MC68HC916X1 Datasheet
398Kb / 2P
   16-BIT MICROCONTROLLER
logo
Fujitsu Component Limit...
MB90333A FUJITSU-MB90333A Datasheet
439Kb / 72P
   16-bit Microcontroller
MB90337 FUJITSU-MB90337 Datasheet
292Kb / 48P
   16-bit Microcontroller
MB90335 FUJITSU-MB90335_07 Datasheet
916Kb / 92P
   16-bit Microcontroller
MB90800 FUJITSU-MB90800_08 Datasheet
2Mb / 92P
   16-bit Microcontroller
MB90330A FUJITSU-MB90330A Datasheet
1Mb / 120P
   16-bit Microcontroller
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