參數(shù)資料
型號: MC68HLC705KJ1CP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 48/117頁
文件大?。?/td> 1644K
代理商: MC68HLC705KJ1CP
Central Processor Unit (CPU)
Data Sheet
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 4.0
36
Central Processor Unit (CPU)
MOTOROLA
Figure 4-1. Programming Model
4.3 CPU Control Unit
The CPU control unit fetches and decodes instructions during program operation.
The control unit selects the memory locations to read and write and coordinates the
timing of all CPU operations.
4.4 Arithmetic/Logic Unit
The arithmetic/logic unit (ALU) performs the arithmetic, logic, and manipulation
operations decoded from the instruction set by the CPU control unit. The ALU
produces the results called for by the program and sets or clears status and control
bits in the condition code register (CCR).
ACCUMULATOR (A)
INDEX REGISTER (X)
CONDITION CODE REGISTER (CCR)
PROGRAM COUNTER (PC)
STACK POINTER (SP)
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
ZERO FLAG
CARRY/BORROW FLAG
0
4
75
6
321
0
ARITHMETIC/LOGIC UNIT
CPU CONTROL UNIT
0
4
75
6
321
0
4
75
6
321
8
12
15
13
14
11 10
9
000000011
0
00
0
4
75
6
321
8
12
15
13
14
11 10
9
11
1
H
I
N
Z
C
0
4
75
6
321
0
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