参数资料
型号: 71M6521FE-IM/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: 15/103页
文件大小: 1691K
代理商: 71M6521FE-IM/F
71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 19 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
Internal Data Memory: 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) select which bank is in use. The
next 16 bytes form a block of bit-addressable memory space at bit addressees 0x00-0x7F. All of the bytes in the lower 128
bytes are accessible through direct or indirect addressing. Table 6 shows the internal data memory map.
Address
Direct addressing
Indirect addressing
0xFF
Special Function Registers
(SFRs)
RAM
0x80
0x7F
Byte-addressable area
0x30
0x2F
Bit-addressable area
0x20
0x1F
Register banks R0…R7
0x00
Table 6: Internal Data Memory Map
Special Function Registers (SFRs)
A map of the Special Function Registers is shown in Table 7.
Hex\Bin
Bit-address-
able
Byte-addressable
Bin/Hex
X000
X001
X010
X011
X100
X101
X110
X111
F8
INTBITS
FF
F0
B
F7
E8
WDI
EF
E0
A
E7
D8
WDCON
DF
D0
PSW
D7
C8
T2CON
CF
C0
IRCON
C7
B8
IEN1
IP1
S0RELH
S1RELH
USR2
BF
B0
FLSHCTL
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
WDTREL
PCON
87
Table 7: Special Function Registers Locations
Only a few addresses are occupied, the others are not implemented. SFRs specific to the 652X are shown in bold print. Any
read access to unimplemented addresses will return undefined data, while any write access will have no effect. The registers at
0x80, 0x88, 0x90, etc., are bit-addressable, all others are byte-addressable.
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