參數(shù)資料
型號(hào)： MC68HC705KJ1CDW
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO16
封裝： SOIC-16
文件頁(yè)數(shù)： 38/108頁(yè)
文件大?。?/td> 719K
代理商： MC68HC705KJ1CDW
CPU Registers
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
35
4.5 CPU Registers
The M68HC05 CPU contains five registers that control and monitor MCU operation:
Accumulator
Index register
Stack pointer
Program counter
Condition code register
CPU registers are not memory mapped.
4.5.1 Accumulator
The accumulator is a general-purpose 8-bit register. The CPU uses the accumulator to hold operands and
results of ALU operations.
4.5.2 Index Register
In the indexed addressing modes, the CPU uses the byte in the index register to determine the conditional
address of the operand. The index register also can serve as a temporary storage location or a counter.
4.5.3 Stack Pointer
The stack pointer is a 16-bit register that contains the address of the next location on the stack. During a
reset or after the reset stack pointer instruction (RSP), the stack pointer is preset to $00FF. The address
in the stack pointer decrements after a byte is stacked and increments before a byte is unstacked.
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Figure 4-2. Accumulator (A)
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Figure 4-3. Index Register (X)
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Bit
0
Read:
0
00
000
001
1
Write:
Reset:
0
000
001
11
111
11
= Unimplemented
Figure 4-4. Stack Pointer (SP)
相關(guān)PDF資料
PDF描述
MC68HC705KJ1CS 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CDIP16
MC68HRC705KJ1CS 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CDIP16
MC68HLC705KJ1CP 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
MC68HRC705KJ1CP 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
MC68HC705L1B 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MC68HC705L32FU 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HC705L5FUE 功能描述:8位微控制器 -MCU 705L5-EPP-80QFP-6019 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC705MC4CDW 制造商:Motorola 功能描述:MOTOROLA S7D9B
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