The 68HC12 ( or HC12 for short) is a microcontroller family from Freescale Semiconductor. Originally introduced in the mids, the architecture is an. Has several new addressing modes added. • Accesses additional memories externally. Here is an overview of the HCS12 CPU architecture. The HCS12 CPU is. COM/SEMICONDUCTORS. HCS Microcontrollers. S12CPUV2/D. Rev. 0 In the M68HC12 and HCS12 architecture, all memory and input/output. (I/O) are.
EET Unit 2 HCS12 Architecture – ppt video online download
Addressing Mode This atchitecture shows the addressing mode s used by the instruction. Some instructions operate on Accumulator A or Accumulator B. The LDAA instruction can use immediate, direct, extended, or indexed addressing. Direct Addressing and Extended Addressing.
Auth with social network: Homework 2 and Lab 2 due next week.
EET 2261 Unit 2 HCS12 Architecture
All instructions must have an op code. Control Unit Basic Architecture.
Operation This column explains the operation that the instruction performs. The following are all equivalent: If you wish to download it, please recommend it to your friends in any social system. But there are other ways to specify the operand. Relative — Offset relative to the instruction itself specifies a branch target address. My presentations Profile Feedback Log out. The pound sign indicates immediate addressing. Arithmetic, Logic Instructions, and Programs Chapter 6: The other registers X, Y, and SP sometimes serve as general-purpose registers and sometimes perform specific functions.
Used only with branch instructions. Select a sequence of instructions that takes a certain amount of time to execute. Architdcture can notify you when this item is back in stock.
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Immediate — Data itself is part of the instruction. Product details Format Hardback pages Dimensions Memory Map Programmers must pay attention to where in memory their programs and data are stored. Other instructions operate on Accumulator D.
PC always holds the address of the next instruction to be executed. A memory map shows which memory addresses are achitecture, and which are available for your use.
But only some instructions affect these flag bits: This one-byte register is the concatenation of eight 1-bit signals. LDD loads a bit number into D. Homework archltecture and Lab 7 due next week.
HCS12 Microcontrollers and Embedded Systems : Muhammad Ali Mazidi :
The number of letters in that column indicates the number of E cycles that a specific instruction takes to complete the execution. The text features several examples and sample programs that provide students with opportunities to learn by doing. Relay, Optoisolator, and Stepper Motor Chapter Other instructions are more complicated and have additional things you architeccture to type, explained here: Some abbreviations used in this column: Share buttons are a little bit lower.