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| 型号： | 71M6521DE-IMR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC68 |
| 封装： | LEAD FREE, LQFN-68 |
| 文件页数： | 18/103页 |
| 文件大小： | 1691K |
| 代理商： | 71M6521DE-IMR/F |
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71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 21 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
Accumulator (ACC, A): ACC is the accumulator register. Most instructions use the accumulator to hold the operand.
The mnemonics for accumulator-specific instructions refer to accumulator as “A”, not ACC.
B Register: The B register is used during multiply and divide instructions. It can also be used as a scratch-pad register to hold
temporary data.
Program Status Word (PSW):
MSB
LSB
CV
AC
F0
RS1
RS
OV
-
P
Table 9: PSW Register Flags
Bit
Symbol
Function
PSW.7
CV
Carry flag
PSW.6
AC
Auxiliary Carry flag for BCD operations
PSW.5
F0
General purpose Flag 0 available for user.
F0 is not to be confused with the F0 flag in the CE STATUS register.
PSW.4
RS1
Register bank select control bits. The contents of RS1 and RS0 select the working
register bank:
RS1/RS0
Bank selected
Location
00
Bank 0
(0x00 – 0x07)
01
Bank 1
(0x08 – 0x0F)
10
Bank 2
(0x10 – 0x17)
11
Bank 3
(0x18 – 0x1F)
PSW.3
RS0
PSW.2
OV
Overflow flag
PSW.1
-
User defined flag
PSW.0
P
Parity flag, affected by hardware to indicate odd / even number of “one” bits in the
Accumulator, i.e. even parity.
Table 10: PSW Bit Functions
Stack Pointer (SP): The stack pointer is a 1-byte register initialized to 0x07 after reset. This register is incremented before
PUSH and CALL instructions, causing the stack to begin at location 0x08.
Data Pointer: The data pointer (DPTR) is 2 bytes wide. The lower part is DPL, and the highest is DPH. It can be loaded as two
registers (e.g. MOV DPL,#data8). It is generally used to access external code or data space (e.g. MOVC A,@A+DPTR or
MOVX A,@DPTR respectively).
Program Counter: The program counter (PC) is 2 bytes wide initialized to 0x0000 after reset. This register is incremented
when fetching operation code or when operating on data from program memory.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6521DH | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521DH-IGT/F | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521DH-IGTR/F | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521FE | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521FE-DB | 功能描述:开发板和工具包 - 8051 71M6521FE Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
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