2.0 LM63 Registers

The following pages include: Section 2.1, a Register Map in Hexadecimal Order, which shows a summary of all registers and their

bit assignments, Section 2.2, a Register Map in Functional Order, and Section 2.3, a detailed explanation of each register. Do not

address the unused or manufacturer’s test registers.

2.1 LM63 REGISTER MAP IN HEXADECIMAL ORDER

The following is a Register Map grouped in hexadecimal address order. Some address locations have been left blank to maintain

compatibility with LM86. Addresses in parenthesis are mirrors of “Same As” address for backwards compatibility with some older

software. Reading or writing either address will access the same 8-bit register.

Register

0x[HEX]

Register Name

DATA BITS

D7

D6

D5

D4

D3

D2

D1

D0

00

Local Temperature

LT7

LT6

LT5

LT4

LT3

LT2

LT1

LT0

01

Rmt Temp MSB

RTHB14

RTHB13

RTHB12

RTHB11

RTHB10

RTHB9

RTHB8

02

ALERT Status

BUSY

LHIGH

0

RHIGH

RLOW

RDFA

RCRIT

TACH

03

Configuration

ALTMSK

STBY

PWMDIS

0

0

ALT/TCH

TCRITOV

FLTQUE

04

Conversion Rate

0

0

0

0

CONV3

CONV2

CONV1

CONV0

05

Local High Setpoint

LHS7

LHS6

LHS5

LHS4

LHS3

LHS2

LHS1

LHS0

06

[Reserved]

Not Used

07

Rmt High Setpoint MSB RHSHB15 RHSHB14 RHHBS13 RHSHB12 RHSHB11 RHSHB10

RHSHB9

RHSHB8

08

Rmt Low Setpoint MSB

RLSHB15 RLSHB14 RLSHB13 RLSHB12

RLHBS11

RLSHB10

RLSHB9

RLSHB8

(09)

Same as 03

(0A)

Same as 04

(0B)

Same as 05

0C

[Reserved]

Not Used

(0D)

Same as 07

(0E)

Same as 08

0F

One Shot

Write Only. Write command triggers one temperature conversion cycle.

10

Rmt Temp LSB

RTLB7

RTLB6

RTLB5

0

0

0

0

0

11

Rmt Temp Offset MSB

RTOHB15 RTOHB14 RTOHB13 RTOHB12 RTOHB11 RTOHB10

RTOHB9

RTOHB8

12

Rmt Temp Offset LSB

RTOLB7

RTOLB6

RTOLB5

0

0

0

0

0

13

Rmt High Setpoint LSB

RHSLB7

RHSLB6

RHSLB5

0

0

0

0

0

14

Rmt Low Setpoint LSB

RLSLB7

RLSLB6

RLSLB5

0

0

0

0

0

15

[Reserved]

Not Used

16

ALERT Mask

1

ALTMSK6

1

ALTMSK4 ALTMSK3

1

ALTMSK1 ALTMSK0

17

[Reserved]

Not Used

18

[Reserved]

Not Used

19

Rmt TCRIT Setpoint

RCS7

RCS6

RCS5

RCS4

RCS3

RCS2

RCS1

RCS0

1A–1F

[Reserved]

Not Used

20

[Reserved]

Not Used

21

Rmt TCRIT Hysteresis

RTH7

RTH6

RTH5

RTH4

RTH3

RTH2

RTH1

RTH0

22–2F

[Reserved]

Not Used

30–3F

[Reserved]

Not Used

40–45

[Reserved]

Not Used

46

Tach Count LSB

TCLB5

TCLB4

TCLB3

TCLB2

TCLB1

TCLB0

TEDGE1

TEDGE0

47

Tach Count MSB

TCHB13

TCHB12

TCHB11

TCHB10

TCHB9

TCHB8

TCHB7

TCHB6

48

Tach Limit LSB

TLLB7

TLLB6

TLLB5

TLLB4

TLLB3

TLLB2

Not Used

Not Used

49

Tach Limit MSB

TLHB15

TLHB14

TLHB13

TLHB12

TLHB11

TLHB10

TLHB9

TLHB8

4A

PWM and RPM

0

0

PWPGM

PWCKSL

0

TACH1

TACH0

4B

Fan Spin-Up Config

0

0

SPINUP

SPNDTY1 SPNDTY0 SPNUPT2 SPNUPT1 SPNUPT0

4C

PWM Value

0

0

PWVAL5

PWVAL4

PWVAL3

PWVAL2

PWVAL1

PWVAL0

4D

PWM Frequency

0

0

0

PWMF4

PWMF3

PWMF2

PWMF1

PWMF0

4E

[Reserved]

Not Used

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