LM63CIMA/NOPB National Semiconductor, LM63CIMA/NOPB Datasheet - Page 15

• Manufacturer Part Number: LM63CIMA/NOPB
• Description: IC TEMP SENSR REMOTE DIODE 8SOIC
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM63CIMA/NOPB

• Function: Fan Control, Temp Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Speed Control, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 1°C
• Supply Current: 1.3mA
• Supply Voltage Range: 3V To 3.6V
• Resolution (bits): 11bit
• Sensor Case Style: SOIC
• No. Of Pins: 8
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Accuracy %: 1°C
• For Use With: LM63EVAL - BOARD EVALUATION LM63
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM63CIMA; LM63CIMA

ALERT STATUS AND MASK REGISTERS
ID AND TEST REGISTERS
[RESERVED] REGISTERS—NOT USED
Register
C0–FD
1A–1F
60–BE
22–2F
30–3F
40–45
2.3 LM63 INITIAL REGISTER SEQUENCE AND REGISTER DESCRIPTIONS IN FUNCTIONAL ORDER
The following is a Register Map grouped in functional and sequence order. Some address locations have been left blank to maintain
compatibility with LM86. Addresses in parenthesis are mirrors of named address for backwards compatibility with some older
software. Reading or writing either address will access the same 8-bit register.
2.3.1 LM63 Required Initial Fan Control Register Sequence
Important! The BIOS must follow the sequence below to configure the following Fan Registers for the LM63 before using any of
the Fan or Tachometer or PWM registers:
All other registers can be written at any time after the above sequence.
[HEX]
Step
0C
02
16
FF
06
15
17
18
20
4E
1
2
3
4
5
[4A] Write bits 0 and 1; 3 and 4. This includes tach settings if used, PWM internal clock select (1.4 kHz or 360 kHz) and
PWM Output Polarity.
[4B] Write bits 0 through 5 to program the spin-up settings.
[4D] Write bits 0 through 4 to set the frequency settings. This works with the PWM internal clock select.
Choose, then write, only one of the following:
A. [4F–5F] the Lookup Table, or
B. [4C] the PWM value bits 0 through 5.
If Step 4A, Lookup Table, was chosen and written then write [4A] bit 5 = 0.
Stepping/Die Rev. ID
Register Name
ALERT Status
ALERT Mask
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
[Register]
HEX
15
and Setup Instructions
Read/Write
Read Only
Read Only
R/W
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
POR Default
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[HEX]
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
A4
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