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参数资料
型号： 71M6543GH-IGTR/F
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 模拟信号调理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封装： LEAD FREE, LQFP-100
文件页数： 84/157页
文件大小： 2178K
代理商： 71M6543GH-IGTR/F
71M6543F/H and 71M6543G/GH Data Sheet
32
2008–2011 Teridian Semiconductor Corporation
v1.2
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 10 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 of the bytes in the lower 128 bytes are accessible through direct or indirect
addressing.
Table 10: Internal Data Memory Map
Address Range
Direct Addressing
Indirect Addressing
0x80
0xFF
Special Function Registers (SFRs)
RAM
0x30
0x7F
Byte addressable area
0x20
0x2F
Bit addressable area
0x00
0x1F
Register banks R0…R7
2.4.2
Special Function Registers (SFRs)
A map of the Special Function Registers is shown in Table 11.
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 71M6543 are shown in bold print on a gray field. The registers at 0x80, 0x88, 0x90, etc.,
are bit addressable, all others are byte addressable.
Table 11: Special Function Register Map
Hex/
Bin
Bit
Addressable
Byte Addressable
Bin/
Hex
X000
X001
X010
X011
X100
X101
X110
X111
F8
INTBITS
VSTAT
RCMD SPI_CMD
FF
F0
B
F7
E8
IFLAGS
EF
E0
A
E7
D8
WDCON
DF
D0
PSW
D7
C8
T2CON
CF
C0
IRCON
C7
B8
IEN1
IP1
S0RELH
S1RELH
PDATA
BF
B0
P3
FLSHCTL
FL_BANK
PGADR
B7
A8
IEN0
IP0
S0RELL
AF
A0
P2
DIR2
DIR0
A7
98
S0CON
S0BUF
IEN2
S1CON
S1BUF
S1RELL
EEDATA
EECTRL
9F
90
P1
DIR1
DPS
ERASE
97
88
TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
8F
80
P0
SP
DPL
DPH
DPL1
DPH1
PCON
87
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