User guide
2.0 LM63 Registers (Continued)
ALERT Status And Mask Registers (Continued)
ADDRESS
Hex
Read/
Write
Bits
POR
Value
Name Description
16
HEX
ALERT MASK REGISTER (8-bits)
16 R/W
7 1 This bit is unused and always read as 1.
60
Local High
Alarm Mask
When this bit is a 0, a Local High Alarm event will generate an ALERT.
When this bit is a 1, a Local High Alarm will not generate an ALERT
5 1 This bit is unused and always read as 1.
40
Remote
High Alarm Mask
When this bit is a 0, Remote High Alarm event will generate an ALERT.
When this bit is a 1, a Remote High Alarm event will not generate an
ALERT.
30
Remote
Low Alarm
Mask
When this bit is a 0, a Remote Low Alarm event will generate an
ALERT.
When this bit is a 1, a Remote Low Alarm event will not generate an
ALERT.
2 1 This bit is unused and always read as 1.
10
Remote
T_CRIT
Alarm Mask
When this bit is a 0, a Remote T_CRIT event will generate an ALERT.
When this bit is a 1, a Remote T_CRIT event will not generate an
ALERT.
00
Tach
Alarm Mask
When this bit is a 0, a Tach Alarm event will generate an ALERT.
When this bit is a 1, a Tach Alarm event will not generate an ALERT.
Conversion Rate And One-Shot Registers
ADDRESS
Hex
Read/
Write
Bits
POR
Value
Name Description
04 (0A)
HEX
CONVERSION RATE REGISTER (8-bits)
04 (0A) R/W 7:0 0x08
Conversion
Rate
Sets the conversion rate of the LM63.
00000000 = 0.0625 Hz
00000001 = 0.125 Hz
00000010 = 0.25 Hz
00000011 = 0.5 Hz
00000100 = 1 Hz
00000101 = 2 Hz
00000110 = 4 Hz
00000111 = 8 Hz
00001000 = 16 Hz
00001001 = 32 Hz
All other values = 32 Hz
04 (0A)
HEX
ONE-SHOT REGISTER (8-bits)
0F
Write
Only
7:0 N/A
One Shot
Trigger
With the LM63 in the STANDBY mode a single write to this register will
initiate one complete temperature conversion cycle.
ID Registers
ADDRESS
Hex
Read/
Write
Bits
POR
Value
Name Description
FF
HEX
STEPPING / DIE REVISION ID REGISTER (8-bits)
FF
Read
Only
7:0 0x41
Stepping/Die
Revision ID
Version of LM63
FE
HEX
MANUFACTURER’S ID REGISTER (8-bits)
FE
Read
Only
7:0 0x01 Manufacturer’s ID 0x01 = National Semiconductor
LM63
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