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Special function registers location – Maxim Integrated 71M6513H Power Meter IC Family Software User Manual

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71M651x Software User’s Guide

address

direct addressing

Indirect addressing

0xFF

0x80

Special Function
Registers (SFRs)

0x7F

0x30

RAM

0x2F

0x20

bit-addressable area

0x1F

0x00

register banks R0…R7

Table 6-3: Internal Data Memory Map

Special Function Registers Location

A map of the Special Function Registers is shown in Table 6-4. Only a few addresses are occupied, the others are not
implemented. SFRs specific to the 651X are shown in bold print (see 71M651X data sheet for descriptions of these
registers). 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.

Hex/Bin

X000

X001

X010

X011

X100

X101

X110

X111

Bit-

address-

able

Byte-addressable

Bin/Hex

F8

INTBITS

FF

F0

B

F7

E8

WDI

EF

E0

A

E7

D8

WDCON

DF

D0

PSW

D7

C8

CF

C0

IRCON

C7

B8

IEN

IP1

S0RELH

S1RELH

USR2

BF

B0

FLSHCTL

PGADR

B7

A8

IEN0

IP0

S0RELL

AF

A0

DIO11

(P2)

DIO12

(P2)

DIO8

(P0)

A7

98

S0CON

S0BUF

IEN2

S1CON

S1BUF

S1RELL

EEDATA

EECTRL

9F

90

DIO9

(P1)

DIO10

(P1)

DPS

ERASE

97

88

TCON

TMOD

TL0

TL1

TH0

TH1

CKCON

8F

80

DIO7

(P0)

SP

DPL

DPH

DPL1

DPH1

WDTREL

PCON

87

Table 6-4: Special Function Registers Locations

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