参数资料
型号: 71M6541F-DB
厂商: Maxim Integrated Products
文件页数: 33/166页
文件大小: 0K
描述: DEMO BOARD 71M6541F
标准包装: 1
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
DPTR1 is useful for copy routines, where it can make the inner loop of the routine two instructions
faster compared to the reloading of DPTR from registers. Any interrupt routine using DPTR1 must save
and restore DPS , DPTR and DPTR1 , which increases stack usage and slows down interrupt latency.
By selecting the R80515 core in the Keil compiler project settings and by using the compiler directive
“MODC2”, dual data pointers are enabled in certain library routines.
An alternative data pointer is available in the form of the PDATA register ( SFR 0xBF ), sometimes referred
to as USR2 ). It defines the high byte of a 16-bit address when reading or writing XDATA with the instruction
MOVX A,@Ri or MOVX @Ri,A.
Internal Data Memory Map and Access
The Internal data memory provides 256 bytes (0x00 to 0xFF) of data memory. The internal data memory
address is always 1 byte wide. Table 11 shows the internal data memory map.
The Special Function Registers (SFR) occupy the upper 128 bytes. The SFR area of internal data memory
is available only by direct addressing. Indirect addressing of this area accesses the upper 128 bytes of
Internal RAM. The lower 128 bytes contain working registers and bit addressable memory. The lower 32
bytes form four banks of eight registers (R0-R7). Two bits on the program memory status word ( PSW, SFR
0xD0 ) select which bank is in use. The next 16 bytes form a block of bit addressable memory space at
addresses 0x00-0x7F. All the bytes in the lower 128 bytes are accessible through direct or indirect
addressing.
Table 11: Internal Data Memory Map
Address Range
Direct Addressing
Indirect Addressing
0x80
0x30
0x20
0x00
0xFF
0x7F
0x2F
0x1F
Special Function Registers (SFRs)
Byte addressable area
Bit addressable area
Register banks R0…R7
RAM
2.4.2
Special Function Registers (SFRs)
A map of the Special Function Registers is shown in Table 12 .
Only a few addresses in the SFR memory space are occupied, the others are not implemented. A read
access to unimplemented addresses returns undefined data, while a write access has no effect. SFRs
specific to the 71M654x are shown in bold print on a shaded field. The registers at 0x80, 0x88, 0x90,
etc., are bit addressable, all others are byte addressable.
Table 12: Special Function Register Map
Hex/
Bin
F8
Bit
Addressable
X000
FLAG1
X001
STAT
X010
Byte Addressable
X011 X100 X101
REMOTE0
SPI1
X110
X111
Bin/
Hex
FF
F0
E8
E0
D8
D0
C8
C0
B
IFLAGS
A
WDCON
PSW
T2CON
IRCON
F7
EF
E7
DF
D7
CF
C7
B8
B0
A8
IEN1
P3 (DIO12:15)
IEN0
IP1
IP0
S0RELH
FLSHCTL
S0RELL
S1RELH
PDATA
FL_BANK PGADR
BF
B7
AF
A0
Rev 4
P2 (DIO8:11)
A7
相关PDF资料
PDF描述
71M6543F-DB-CT DEMO BOARD 71M6543F-DB-CT
72-CNV-5 CONVERTER RS-232 TO RS-422 5V
72346-001 72346-1-SCA-II REC
72347-001LF CONN RECEPT SCA2 20POS VERT PCB
72436-001LF 80POS EXT HT. REC SCA-2
相关代理商/技术参数
参数描述
71M6541F-IGT/F 功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6541F-IGTR/F 功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6541FT-IGT/F 制造商:Maxim Integrated Products 功能描述:1-PHASE SOC, 64KB FLASH, PRES TEMP SENSOR - Rail/Tube
71M6541FT-IGTR/F 制造商:Maxim Integrated Products 功能描述:1-PHASE SOC, 64KB FLASH, PRES TEMP SENSOR - Tape and Reel
71M6541G 制造商:未知厂家 制造商全称:未知厂家 功能描述:71M6541D/71M6541F/71M6541G/71M6542F/71M6542G 是 TeridianTM 的第4 代高集成度单相电表SoC