參數(shù)資料
型號(hào): MCHC11F1CFNE2
廠商: Freescale Semiconductor
文件頁數(shù): 78/158頁
文件大?。?/td> 0K
描述: IC MCU 512 EEPROM 68-PLCC
標(biāo)準(zhǔn)包裝: 18
系列: HC11
核心處理器: HC11
芯體尺寸: 8-位
速度: 2MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 30
程序存儲(chǔ)器類型: ROMless
EEPROM 大小: 512 x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.75 V ~ 5.25 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 68-LCC(J 形引線)
包裝: 管件
CENTRAL PROCESSING UNIT
MC68HC11F1
3-2
TECHNICAL DATA
Figure 3-1 Programming Model
3.1.1 Accumulators A, B, and D
Accumulators A and B are general-purpose 8-bit registers that hold operands and re-
sults of arithmetic calculations or data manipulations. For some instructions, these two
accumulators are treated as a single double-byte (16-bit) accumulator called accumu-
lator D. Although most instructions can use accumulators A or B interchangeably, the
following exceptions apply:
The ABX and ABY instructions add the contents of 8-bit accumulator B to the contents
of 16-bit register X or Y, but there are no equivalent instructions that use A instead of B.
The TAP and TPA instructions transfer data from accumulator A to the condition code
register, or from the condition code register to accumulator A, however, there are no
equivalent instructions that use B rather than A.
The decimal adjust accumulator A (DAA) instruction is used after binary-coded deci-
mal (BCD) arithmetic operations, but there is no equivalent BCD instruction to adjust
accumulator B.
CARRY
OVERFLOW
ZERO
NEGATIVE
I INTERRUPT MASK
HALF-CARRY (FROM BIT 3)
X INTERRUPT MASK
STOP DISABLE
CCR
PC
SP
IY
IX
D
S
PROGRAM COUNTER
STACK POINTER
INDEX REGISTER Y
INDEX REGISTER X
DOUBLE ACCUMULATOR D
ACCUMULATOR B
CONDITION CODE REGISTER
X
H
I
N
Z
V
C
70
0
15
0
15
0
15
0
15
0
15
70
ACCUMULATOR A
1
2
3
4
5
6
B
A
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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