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LTC2936CUFD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
LTC2936
16
2936fa
For more information www.linear.com/LTC2936
operaTion
V1_THR (Command Byte 0x04), V2_THR (0x05),
V3_THR (0x06), V4_THR (0x07),V5_THR (0x08),
V6_THR (0x09)
The V
n
_THR command allows the user to specify the high
and low threshold monitoring voltages on each channel.
Vn_THR Data Contents Channels V1 to V6
BIT(S) SYMBOL OPERATION
b[15:8] V
n
_THR_HI The COMPn_HI threshold. See the Applications Information section. Factory default settings of 0xE6, 0x89, 0x5D, 0x99,
0x78, 0x57 correspond to 5.5V, 3.64V, 2.76V, 1.98V, 1.65V and 1.32V for channels V1 to V6, respectively.
b[7:0] V
n
_THR_LO The COMPn_LO threshold. See the Applications Information section. Factory default settings of 0xB4, 0x68, 0x44, 0x75,
0x5A, 0x3F correspond to 4.5V, 2.98V, 2.26V, 1.62V 1.35V and 1.08V for channels V1 to V6, respectively.
V1_CONFIG (Command Byte 0x0A), V2_CONFIG (0x0B),
V3_CONFIG (0x0C), V4_CONFIG (0x0D),
V5_CONFIG (0x0E), V6_CONFIG (0x0F)
The V
n
_CONFIG command programs V1 through V6
comparator range, polarity and mapping to GPIO
n
and CMP
n
.
Vn_CONFIG Data Contents Channels V1 to V6
BIT(S) SYMBOL OPERATION
b[15:13] Reserved Ignore
b[12] CMPn_LATCH 0: CMP
n
output not latched.
1: CMP
n
output latched.
Factory default 0.
b[11]
MAP_COMP
n
_HI_TO_CMP
n
0: High comparator not mapped to CMP
n
.
1: High comparator mapped to CMP
n
.
Factory default 1.
b[10]
MAP_COMP
n
_LO_TO_CMP
n
0: Low comparator not mapped to CMP
n
.
1: Low comparator mapped to CMP
n
.
Factory default 1.
b[9:8]
V
n
_RANGE 00b: Medium Range.
01b: Low Range.
10b and 11b: Precision Range.
Factory defaults are 00b on V1-V3 and 01b on V4-V6.
b[7]
V
n
_POL_HI Controls polarity of COMPn_HI output reported by STATUS_WORD. See STATUS_WORD
description for details.
0: Undervoltage. Indicates a fault when the input voltage is below V
n
_THR_HI.
1: Overvoltage. Indicates a fault when the input voltage is above V
n
_THR_HI.
Factory default 1.
b[6]
V
n
_POL_LO Controls polarity of COMPn_LO output reported by STATUS_WORD. See STATUS_WORD
description for details.
0: Undervoltage. Indicates a fault when the input voltage is below V
n
_THR_LO.
1: Overvoltage. Indicates a fault when the input voltage is above V
n
_THR_LO.
Factory default 0.
b[5]
MAP_COMP
n
_HI_TO_GPIO3 0: High comparator not mapped to GPIO3.
1: High comparator mapped to GPIO3.
Factory default 0.
b[4]
MAP_COMP
n
_HI_TO_GPIO2 0: High comparator not mapped to GPIO2.
1: High comparator mapped to GPIO2.
Factory default 0.
LTC2936
17
2936fa
For more information www.linear.com/LTC2936
operaTion
HISTORY_WORD (Command Byte 0x11)
The HISTORY_WORD command returns two bytes of
information with a summary of the faults since power was
applied or HISTORY_WORD was last cleared. HISTORY_
WORD is located in volatile memory and is automatically
updated each time a fault occurs. HISTORY_WORD is
cleared using the CLEAR_HISTORY command.
HISTORY_WORD Data Contents
BIT(S) SYMBOL OPERATION
b[15:13] Reserved Ignore
b[12] V6_HI_LATCHED_FAULT 1: Latched V6_HI_FAULT.
0: No fault.
b[11]
V6_LO_LATCHED_FAULT 1: Latched V6_LO_FAULT.
0: No fault.
b[10]
V5_HI_LATCHED_FAULT 1: Latched V5_HI_FAULT.
0: No fault.
b[9]
V5_LO_LATCHED_FAULT 1: Latched V5_LO_FAULT.
0: No fault.
b[8]
V4_HI_LATCHED_FAULT 1: Latched V4_HI_FAULT.
0: No fault.
b[7]
V4_LO_LATCHED_FAULT 1: Latched V4_LO_FAULT.
0: No fault.
b[6]
V3_HI_LATCHED_FAULT 1: Latched V3_HI_FAULT.
0: No fault.
b[5]
V3_LO_LATCHED_FAULT 1: Latched V3_LO_FAULT.
0: No fault.
b[4]
V2_HI_LATCHED_FAULT 1: Latched V2_HI_FAULT.
0: No fault.
b[3]
V2_LO_LATCHED_FAULT 1: Latched V2_LO_FAULT.
0: No fault.
b[2]
V1_HI_LATCHED_FAULT 1: Latched V1_HI_FAULT.
0: No fault.
b[1]
V1_LO_LATCHED_FAULT 1: Latched V1_LO_FAULT.
0: No fault.
b[0]
Reserved Ignore
Vn_CONFIG Data Contents Channels V1 to V6
b[3] MAP_COMP
n
_HI_TO_GPIO1 0: High comparator not mapped to GPIO1.
1: High comparator mapped to GPIO1.
Factory default 1.
b[2]
MAP_COMP
n
_LO_TO_GPIO3 0: Low comparator not mapped to GPIO3.
1: Low comparator mapped to GPIO3.
Factory default 0.
b[1]
MAP_COMP
n
_LO_TO_GPIO2 0: Low comparator not mapped to GPIO2.
1: Low comparator mapped to GPIO2.
Factory default 0.
b[0]
MAP_COMP
n
_LO_TO_GPIO1 0: Low comparator not mapped to GPIO1.
1: Low comparator mapped to GPIO1.
Factory default 1.
LTC2936
18
2936fa
For more information www.linear.com/LTC2936
operaTion
PADS (Command Byte 0x1A)
The PADS register returns the status of the GPIn, GPIOn
and CMPn pads.
PADS Data Contents
BIT(S) SYMBOL OPERATION
b[15:11] Reserved Ignore
b[10] GPI2_STATUS 0: GPI2 pin is logic low.
1: GPI2 pin is logic high.
b[9] GPI1_ST
ATUS 0: GPI1 pin is logic low.
1: GPI1 pin is logic high.
b[8] GPIO3_ST
ATUS 0: GPIO3 pin is logic low.
1: GPIO3 pin is logic high.
b[7] GPIO2_STATUS 0: GPIO2 pin is logic low.
1: GPIO2 pin is logic high.
b[6] GPIO1_ST
ATUS 0: GPIO1 pin is logic low.
1: GPIO1 pin is logic high.
b[5] CMP6_ST
ATUS 0: CMP6 pin is logic low.
1: CMP6 pin is logic high.
b[4] CMP5_ST
ATUS 0: CMP5 pin is logic low.
1: CMP5 pin is logic high.
b[3] CMP4_ST
ATUS 0: CMP4 pin is logic low.
1: CMP4 pin is logic high.
b[2] CMP3_ST
ATUS 0: CMP3 pin is logic low.
1: CMP3 pin is logic high.
b[1] CMP2_ST
ATUS 0: CMP2 pin is logic low.
1: CMP2 pin is logic high.
b[0] CMP1_ST
ATUS 0: CMP1 pin is logic low.
1: CMP1 pin is logic high.
CLEAR_HISTORY (Command Byte 0x1B)
The CLEAR_HISTORY command clears all the faults logged
in the volatile HISTORY_WORD register. A manual reset
performs the same operation if GPI
n
_MR_RESPONSE = 1.
Clearing HISTORY_WORD does not affect the
STATUS_
WORD content. Processing of the CLEAR_HISTORY
command typically takes less than 10ms, and the part will
not acknowledge other I
2
C operations during that time.
STORE_USER (Command Byte 0x1C)
RESTORE_USER (Command Byte 0x1D)
T
he
STORE_USER and RESTORE_USER commands
access nonvolatile EEPROM memory. Once a command is
stored in EEPROM using STORE_USER, it will be restored
to volatile operating memory with the RESTORE_USER
command or when the part powers up.
BACKUP_WORD (Command Byte 0x1E)
After the first fault occurs, HISTORY_WORD is written to
EEPROM for backup. Any subsequent BACKUP_WORD
write following a fault is inhibited until the CLEAR_HISTORY
command is issued. BACKUP_WORD can be retrieved
by sending a RESTORE_USER command followed by a
BACKUP_WORD read. BACKUP_WORD can be cleared
in EEPROM by sending a CLEAR_HISTORY command
followed by a STORE_USER command.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30

LTC2936CUFD#TRPBF

Mfr. #:
Buy LTC2936CUFD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Programmable Hex Voltage Supervisor (w/ Comparator Outputs)
Lifecycle:
New from this manufacturer.
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