
- 7 - 
 Andigilog, Inc. 2006 
www.andigilog.com
August 2006 - 70A04010 
aSC7511
Status Register 
The status register is a read-only register for reporting the 
state of the aSC7511’s alarms. It is a read-only register 
located at 02h.  
Bit 
Name 
Function 
0 
LTHERM 
Local sensor >
 THERM
limit 
1 
RTHERM 
Remote sensor >
 THERM
limit 
Remote sensor open-circuit 
Remote sensor 
≤
 low limit 
Remote sensor > high limit 
Local sensor 
≤
 low limit 
Local sensor > high limit 
Converter in process of conversion
2 
3 
4 
5 
6 
7 
ROPEN 
RLOW 
RHIGH 
LLOW 
LHIGH 
BUSY 
When any high or low local limits or high or low remote 
limits are exceeded, bits 3 through 6 are set accordingly 
and the
 ALERT
 pin 6 will be driven low. If the remote 
sensor is open-circuit, bit 2 will be set and the
 ALERT
 will 
be asserted. Reading the status register will re-set these 
flags if the alerted condition has been removed, however, 
the
 ALERT
 pin will remain asserted until the master has 
serviced the SMBus alert. 
The local and remote
 THERM
limit trip are reported in bits 0 
and 1 respectively. These two bits are reset only by the 
temperature falling below the
 THERM
limit by the amount 
set into the hysteresis register. 
Table 3.  Status Register Bit Assignments
Bit 7 will be high when the converter is busy. The list of 
status register bit assignments is in Table 3. Each condition 
is asserted when the bit is high. Default is 0. 
Read 
Address 
Write 
Address 
Description 
Default 
Value 
Read 
Address
Write 
Address
Description  
Default 
Value 
n/a
n/a
Address Pointer
Local Temperature (high-byte)
2
Remote Temperature (high-byte)
2
n/a
00h
n/a
00h / 0
°
C
Remote Temperature (low-byte)
2
01h
n/a
00h
10h
n/a
00h / 0
°
C
02h
n/a
Status
n/a
03h
09h
Configuration
00h
04h
0Ah
Conversion rate
08h
05h
0Bh
Local High Limit
55h / 85
°
C
00h / 0
°
C
55h / 85
°
C
00h / 0
°
C
06h
0Ch
Local Low Limit
Remote High Limit (high-byte)
2
Remote Low Limit (high-byte)
2
Remote High Limit (low-byte)
2
Remote Low Limit (low-byte)
2
07h
0Dh
13h
13h
00h / 0
°
C
00h / 0
°
C
08h
0Eh
14h
14h
n/a
0Fh
One-Shot Measurement
Remote Temp. Offset (high-byte)
 2
n/a
Remote Temp. Offset (low-byte)
2
11h
11h
00h / 0
°
C
55h / 85
°
C
55h / 85
°
C
0Ah / 
10
°
C
12h
12h
00h / 0
°
C
19h
19h
Remote 
 THERM
 Limit
Local 
 THERM
 Limit
20h
20h
21h
21h
THERM Hysteresis
22h
22h
Consecutive 
 ALERT
Manufacturer ID
01h
FEh
n/a
61h
FFh
n/a
Die Revision Code
00h
Notes: 
1. Low-byte values are fractional degrees, MSB of lower byte is 0.5°C 
2. Changing to extended range adds 64°C to values reported, but limit settings are not changed and must be corrected by the user. 
Table 4.  aSC7511 Registers