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参数资料
| 型号： | ST7FSCR1R4T1 |
| 厂商： | 意法半导体 |
| 英文描述： | 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER |
| 中文描述： | 8位低功耗，全速USB微控制器与16K的闪存，768内存，智能卡的I /楼，计时器 |
| 文件页数： | 17/102页 |
| 文件大小： | 1413K |
| 代理商： | ST7FSCR1R4T1 |
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ST7SCR
17/102
5 CENTRAL PROCESSING UNIT
5.1 INTRODUCTION
This CPU has a full 8-bit architecture and contains
six internal registers allowing efficient 8-bit data
manipulation.
5.2 MAIN FEATURES
I
Enable executing 63 basic instructions
I
Fast 8-bit by 8-bit multiply
I
17 main addressing modes (with indirect
addressing mode)
I
Two 8-bit index registers
I
16-bit stack pointer
I
Low power HALT and WAIT modes
I
Priority maskable hardware interrupts
I
Non-maskable software/hardware interrupts
5.3 CPU REGISTERS
The 6 CPU registers shown in
Figure 8
are not
present in the memory mapping and are accessed
by specific instructions.
Accumulator (A)
The Accumulator is an 8-bit general purpose reg-
ister used to hold operands and the results of the
arithmetic and logic calculations and to manipulate
data.
Index Registers (X and Y)
These 8-bit registers are used to create effective
addresses or as temporary storage areas for data
manipulation. (The Cross-Assembler generates a
precede instruction (PRE) to indicate that the fol-
lowing instruction refers to the Y register.)
The Y register is not affected by the interrupt auto-
matic procedures.
Program Counter (PC)
The program counter is a 16-bit register containing
the address of the next instruction to be executed
by the CPU. It is made of two 8-bit registers PCL
(Program Counter Low which is the LSB) and PCH
(Program Counter High which is the MSB).
Figure 8. CPU Registers
ACCUMULATOR
X INDEX REGISTER
Y INDEX REGISTER
STACK POINTER
CONDITION CODE REGISTER
PROGRAM COUNTER
7
1
0
C
1 I1 H I0 N Z
RESET VALUE = RESET VECTOR @ FFFEh-FFFFh
7
0
7
0
7
0
0
7
15
8
PCH
PCL
15
8
7
0
RESET VALUE = STACK HIGHER ADDRESS
RESET VALUE = 1
X
1 1
X 1 X X
RESET VALUE = XXh
RESET VALUE = XXh
RESET VALUE = XXh
X = Undefined Value
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST7FUS-PRIMER | 功能描述:程序设计器 - 基于处理器 Low-Cost Eval Dev Tool Pack RoHS:否 制造商:Olimex Ltd. 产品:Programmers 工具用于评估:XMEGA, MegaAVR, tinyAVR 核心:AVR 接口类型:USB 工作电源电压:1.8 V to 5.5 V |
| ST7FUS-SK/RAIS | 制造商:STMicroelectronics 功能描述:Evaluation and Application Development with ST7Ultralite |
| ST7GEME4 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Full-speed USB MCU with smartcard firmware and EMV/non-EMV interface |
| ST7GEME4M1 | 制造商:STMicroelectronics 功能描述: |
| ST7GEME4U1 | 制造商:STMicroelectronics 功能描述: |
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