71m6545h-igtr/f Maxim Integrated Products, Inc., 71m6545h-igtr/f Datasheet - Page 33

• Manufacturer Part Number: 71m6545h-igtr/f
• Description: Metrology Processors
• Manufacturer: Maxim Integrated Products, Inc.

PDS_6545_009
at addresses 0x00-0x7F. All of the bytes in the lower 128 bytes are accessible through direct or indirect
addressing.
2.4.4 Special Function Registers (SFRs)
A map of the Special Function Registers is shown in
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 71M6545/H are shown in bold print on a gray field. The registers at 0x80, 0x88, 0x90,
etc., are bit addressable, all others are byte addressable.
2.4.5 Generic 80515 Special Function Registers
Table 12
descriptions of the registers can be found at the page numbers listed in the table.
P0
SP
DPL
v1.0
Hex/
Name
Bin
E8
E0
D8
D0
C8
C0
B8
B0
A8
A0
F8
F0
98
90
88
80
Addressable
shows the location, description and reset or power-up value of the generic 80515 SFRs. Additional
Address Range
INTBITS
0x80
0x30
0x20
0x00
IFLAGS
WDCON
T2CON
IRCON
S0CON
TCON
X000
IEN1
IEN0
PSW
Address
Bit
P3
P2
P1
P0
B
A
(Hex)
0x80
0x81
0x82
0xFF
0x7F
0x2F
0x1F
Table 12: Generic 80515 SFRs - Location and Reset Values
VSTAT
S0BUF
TMOD
X001
DIR2
DIR1
Reset value
IP1
IP0
SP
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(Hex)
0xFF
0x07
0x00
Special Function Registers (SFRs)
Table 11: Special Function Register Map
FLSHCTL
Table 10: Internal Data Memory Map
S0RELH
S0RELL
X010
DIR0
IEN2
DPL
DPS
TL0
Direct Addressing
Port 0
Stack Pointer
Data Pointer Low 0
S1RELH
S1CON
X011
DPH
TL1
Byte Addressable
Register banks R0…R7
Byte addressable area
Bit addressable area
Table
ERASE
RCMD SPI_CMD
S1BUF
X100
DPL1
TH0
11.
Description
S1RELL
DPH1
X101
TH1
Indirect Addressing
EEDATA
CKCON
X110
RAM
Data Sheet 71M6545/H
EECTRL
PGADR
PDATA
PCON
X111
Page(s)
Bin/
Hex
35
35
35
DF
CF
BF
AF
EF
D7
C7
B7
A7
FF
F7
E7
9F
8F
97
87
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