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ATA6020N-XXX-TKQ PDF预览

ATA6020N-XXX-TKQ

更新时间: 2024-02-02 20:14:45
品牌 Logo 应用领域
爱特美尔 - ATMEL 微控制器
页数 文件大小 规格书
66页 867K
描述
Microcontroller, 4-Bit, MROM, MARC4 CPU, 4MHz, CMOS, PDSO20,

ATA6020N-XXX-TKQ 技术参数

生命周期:Active包装说明:4.40 MM, LEAD FREE, SSOP-20
Reach Compliance Code:compliant风险等级:5.76
具有ADC:NO地址总线宽度:
位大小:4最大时钟频率:8 MHz
DAC 通道:NODMA 通道:NO
外部数据总线宽度:JESD-30 代码:R-PDSO-G20
长度:6.5 mmI/O 线路数量:12
端子数量:20最高工作温度:85 °C
最低工作温度:-40 °CPWM 通道:YES
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
ROM可编程性:MROM座面最大高度:1.1 mm
最大供电电压:6.5 V最小供电电压:2.5 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL宽度:4.4 mm
uPs/uCs/外围集成电路类型:MICROCONTROLLERBase Number Matches:1

ATA6020N-XXX-TKQ 数据手册

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ATA6020N  
Expression Stack  
The 4-bit wide expression stack is addressed with the expression stack pointer (SP). All  
arithmetic, I/O and memory reference operations take their operands, and return their  
results to the expression stack. The MARC4 performs the operations with the top of  
stack items (TOS and TOS-1). The TOS register contains the top element of the expres-  
sion stack and works in the same way as an accumulator. This stack is also used for  
passing parameters between subroutines and as a scratch pad area for temporary stor-  
age of data.  
Return Stack  
The 12-bit wide return stack is addressed by the return stack pointer (RP). It is used for  
storing return addresses of subroutines, interrupt routines and for keeping loop index  
counts. The return stack can also be used as a temporary storage area.  
The MARC4 instruction set supports the exchange of data between the top elements of  
the expression stack and the return stack. The two stacks within the RAM have a user  
definable location and maximum depth.  
Registers  
The MARC4 controller has seven programmable registers and one condition code regis-  
ter. They are shown in the following programming model.  
Program Counter (PC)  
The program counter is a 12-bit register which contains the address of the next instruc-  
tion to be fetched from ROM. Instructions currently being executed are decoded in the  
instruction decoder to determine the internal micro-operations. For linear code (no calls  
or branches) the program counter is incremented with every instruction cycle. If a  
branch-, call-, return-instruction or an interrupt is executed, the program counter is  
loaded with a new address. The program counter is also used with the TABLE instruc-  
tion to fetch 8-bit wide ROM constants.  
Figure 6. Programming Model  
11  
0
PC  
Program counter  
0
7
RP  
SP  
0
0
Return stack pointer  
7
7
7
0
Expression stack pointer  
0
X
Y
RAM address register (X)  
RAM address register (Y)  
Top of stack register  
0
0
0
3
TOS  
CCR  
3
B
C
--  
I
Condition code register  
Interrupt enable  
Branch  
Reserved  
Carry/borrow  
5
4708C–4BMCU–02/04  

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