MAX1617(2000) 查看數據表（PDF） - ON Semiconductor
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MAX1617 Datasheet PDF : 12 Pages
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MAX1617
Status Register (Status)
D[7] D[6] D[5] D[4] D[3] D[2] D[1]
Busy Flag1 Flag2 Flag3 Flag4 Flag5 Flag6
D[0]
Re-
served
Bit(s)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1:0]
POR
State
0
0
0
0
0
0
0
Function
Signal A/D
converter is busy.
Interrupt flag for
INT_HLIM event
Interrupt flag for
INT_LLIM event
Interrupt flag for
EXT_HLIM event
Interrupt flag for
EXT_LLIM event
External diode
“fault” flag
Reserved —
Always returns
zero.
Operation*
1 = A/D busy,
0 = A/D idle
1 = interrupt occurred,
0 = none
1 = interrupt occurred,
0 = none
1 = interrupt occurred,
0 = none
1 = interrupt occurred,
0 = none
1 = external diode fault
0 = external diode OK
N/A
NOTE: All status bits are cleared after a read operation is
performed on STATUS. The EXT_TEMP register will read +127°C
if an external diode “open” is detected.
Manufacturer’s Identification Register (MFR_ID),
8–Bits, Read Only:
Manufacturer’s Identification Register (MFR_ID)
D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]
MSB X
X
X
X
X
X LSB
Manufacturer’s Revision Register (MFR_REV),
8–Bits, Read Only:
Manufacturer’s Revision Register (MFR_REV)
D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]
MSB X
X
X
X
X
X LSB
Register Set Summary:
The MAX1617’s register set is summarized in the following table. All registers are 8–bits wide.
Name
Description
POR State
Read
Write
INT_TEMP
Internal sensor temperature (2’s complement)
0000 0000b*
√
EXT_TEMP
External sensor temperature (2’s complement)
0000 0000b*
√
STATUS
STATUS register
0000 0000b
√
CONFIG
CONFIG register
0000 0000b
√
√
CONV_RATE
A/D conversion rate register
0000 0010b
√
√
INT_HLIM
Internal high limit (2’s complement)
0111 1111b
√
√
INT_LLIM
Internal low limit (2’s complement)
1100 1001b
√
√
EXT_HLIM
External high limit (2’s complement)
0111 1111b
√
√
EXT_LLIM
External low limit (2’s complement)
1100 1001b
√
√
MFR_ID
ASCII for letter “T”
0101 0100b
√
MFR_REV
Serial device revision #
**
√
CRITICAL
CRITICAL limit (2’s complement)
N/A
√***
*NOTE: The INT_TEMP and EXT_TEMP register immediately will be updated by the A/D converter after POR. If STBY is low at power–up,
INT_TEMP and EXT_TEMP will remain in POR state (0000 0000b).
**MFR_REV will sequence 01h, 02h, 03h, etc. by mask changes.
***CRITICAL only can be written via the CRIT[1:0] pins. It cannot be accessed through the SMBus port.
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