MAX16031ETM+ Maxim Integrated Products, MAX16031ETM+ Datasheet

IC SYSTEM MON EEPROM 48-TQFN

MAX16031ETM+

Manufacturer Part Number
MAX16031ETM+
Description
IC SYSTEM MON EEPROM 48-TQFN
Manufacturer
Maxim Integrated Products
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of MAX16031ETM+

Number Of Voltages Monitored
8
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
Adjustable/Selectable
Voltage - Threshold
8 Selectable Threshold Combinations
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-TQFN Exposed Pad
Manual Reset
Resettable
Watchdog
No Watchdog
Supply Voltage (max)
14 V
Supply Voltage (min)
2.9 V
Supply Current (typ)
3000 uA
Maximum Power Dissipation
2222.2 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16031/MAX16032 EEPROM-configurable sys-
tem monitors feature an integrated 10-bit analog-to-
digital converter (ADC) designed to monitor voltages,
temperatures, and current in complex systems. These
EEPROM-configurable devices allow enormous flexibility
in selecting operating ranges, upper and lower limits,
fault output configuration, and operating modes with
the capability of storing these values within the device.
The MAX16031 monitors up to eight voltages, three
temperatures (one internal/two external remote temper-
ature diodes), and a single current. The MAX16032
monitors up to six voltages and two temperatures (one
internal/one remote temperature diode). Each of these
monitored parameters is muxed into the ADC and writ-
ten to its respective register that can be read back
through the SMBus™ and JTAG interface.
Measured values are compared to the user-config-
urable upper and lower limits. For voltage measure-
ments, there are two undervoltage and two overvoltage
limits. For current and temperature, there are two sets
of upper limits. Whenever the measured value is out-
side its limits, an alert signal is generated to notify the
processor. Independent outputs are available for over-
current, overtemperature, and undervoltage/overvolt-
age that are configured to assert on assigned
channels. There are also undedicated fault outputs that
are configured to offer a secondary limit for tempera-
ture, current, or voltage fault or provide a separate
overvoltage output.
During a major fault event, such as a system shutdown,
the MAX16031/MAX16032 automatically copy the inter-
nal ADC registers into the nonvolatile EEPROM registers
that then are read back for diagnostic purposes.
The MAX16031/MAX16032 offer additional GPIOs that
are used for voltage sequencing, additional fault out-
puts, a manual reset input, or read/write logic levels. A
separate current-sense amplifier with an independent
output allows for fast shutoff during overcurrent condi-
tions. The MAX16031/MAX16032 are available in a
7mm x 7mm TQFN package and are fully specified
from -40°C to +85°C.
19-0870; Rev 3; 9/10
SMBus is a trademark of Intel Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Servers
Storage Systems
Telecom
________________________________________________________________ Maxim Integrated Products
General Description
Workstations
Networking
Applications
EEPROM-Based System Monitors
with Nonvolatile Fault Memory
♦ Supply Voltage Operating Range of 2.85V to 14V
♦ Monitors Up to Eight Voltages (Single-Ended or
♦ EEPROM-Configurable Limits
♦ High-Side Current-Sense Amplifier with
♦ Monitors Up to Three Temperatures
♦ Nonvolatile Fault Memory Stores Fault Conditions
♦ Two Additional Configurable Fault Outputs
♦ Two Configurable GPIOs
♦ SMBus/I
♦ JTAG Interface
♦ 7mm x 7mm, 48-Pin TQFN Package
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
MAX16031ETM+
MAX16032ETM+
Pseudo-Differential) with 1% Accuracy
Overcurrent Output (MAX16031 Only)
(1 Internal/2 Remote)
for Later Retrieval
Output and Bus Timeout Function
Two Undervoltage and Two Overvoltage
Two Overtemperature
Two Overcurrent
N.C. (IN7)
N.C. (IN8)
( ) MAX16031 ONLY
PART
GND
N.C.
N.C.
N.C.
N.C.
IN2
IN3
IN4
IN5
IN6
10
11
12
1
2
3
4
5
6
7
8
9
2
48
13
C-Compatible Interface with ALERT
+
EP
47
14
46
15
45
16
-40°C to +85°C
-40°C to +85°C
Ordering Information
TEMP RANGE
44
17
MAX16031
MAX16032
43
18
TQFN
Pin Configuration
42
19
41
20
40
21
39
22
PIN-PACKAGE
48 TQFN-EP*
48 TQFN-EP*
38
23
Features
37
24
36
35
34
33
32
31
30
29
28
27
26
25
ABP
GND
DBP
TDO
N.C.
N.C.
N.C.
TDI
TCK
TMS
RESET
FAULT1
1

Related parts for MAX16031ETM+

MAX16031ETM+ Summary of contents

Page 1

... Later Retrieval ♦ Two Additional Configurable Fault Outputs ♦ Two Configurable GPIOs ♦ SMBus/I Output and Bus Timeout Function ♦ JTAG Interface ♦ 7mm x 7mm, 48-Pin TQFN Package PART MAX16031ETM+ MAX16032ETM+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. IN2 IN3 IN4 N.C. ...

Page 2

... EEPROM-Based System Monitors with Nonvolatile Fault Memory VOLTAGE MONITORS PART SINGLE ENDED MAX16031ETM+ 8 MAX16032ETM DC-DC 3.3V DC-DC 12V BUS 2.5V DC-DC 1.8V DC-DC 3.3V AUX CS+ CS 1μF DXP1 DXN1 DXP2 DXN2 ABP DBP RBP 1μF 1μF 2.2μF 2 _______________________________________________________________________________________ TEMPERATURE SENSORS ...

Page 3

ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0.3V to +15V CC IN_, FAULT_, SCL, SDA, OVERT to GND.................-0.3V to +6V A0, A1, TCK, TMS, TDI to GND ................................-0.3V to +6V OVERC, RESET, GPIO_, ALERT to GND..................-0.3V to +6V RBP, ABP, DBP ...

Page 4

EEPROM-Based System Monitors with Nonvolatile Fault Memory ELECTRICAL CHARACTERISTICS (continued 2.9V to 14V -40°C to +85°C, unless otherwise specified. Typical values are PARAMETER SYMBOL Input Hysteresis RESET OUTPUT Reset Timeout Period TEMPERATURE ...

Page 5

ELECTRICAL CHARACTERISTICS (continued 2.9V to 14V -40°C to +85°C, unless otherwise specified. Typical values are PARAMETER SYMBOL Current-Sense Analog Input Range ADC Current-Sense Measurement Accuracy Gain Accuracy Common-Mode Rejection Ratio CMRR Power-Supply ...

Page 6

EEPROM-Based System Monitors with Nonvolatile Fault Memory ELECTRICAL CHARACTERISTICS (continued 2.9V to 14V -40°C to +85°C, unless otherwise specified. Typical values are PARAMETER SYMBOL SMBus TIMING (see Figure 1) Serial-Clock Frequency Bus ...

Page 7

SDA t SU:DAT t LOW SCL t HIGH t HD:STA START CONDITION Figure 1. SMBus Interface Timing Diagram TCK TDI, TMS TDO Figure 2. JTAG Interface Timing Diagram _______________________________________________________________________________________ EEPROM-Based System Monitors ...

Page 8

EEPROM-Based System Monitors with Nonvolatile Fault Memory (Typical values are 3.3V +25°C, unless otherwise noted SUPPLY CURRENT CC vs. V SUPPLY VOLTAGE CC 3 +85° +25°C 2.5 ...

Page 9

V = 3.3V +25°C, unless otherwise noted INTERNAL TEMPERATURE SENSOR ACCURACY vs. TEMPERATURE -35 - TEMPERATURE (°C) TEMPERATURE ERROR vs. DXP-DXN CAPACITANCE ...

Page 10

EEPROM-Based System Monitors with Nonvolatile Fault Memory PIN NAME MAX16031 MAX16032 1 1 IN2 2 2 IN3 3 3 IN4 4–7, 11, 12, 4–7, 30, 31, 23, 30, 31, 32, 39, 40, N.C. 32, 39, 47 40–44 13, ...

Page 11

PIN NAME MAX16031 MAX16032 SMBus Alert Open-Drain Output. ALERT follows the SMBALERT# signal functionality described in Appendix A of the SMBus 2.0 Specification. ALERT asserts when the device ALERT 21 21 detects a fault, thereby interrupting the host processor to ...

Page 12

EEPROM-Based System Monitors with Nonvolatile Fault Memory INTERNAL TEMPERATURE SENSOR CIRCUITRY IN1 INPUT RANGE SELECTION INPUT RANGE IN2 SELECTION INPUT RANGE IN3 SELECTION INPUT RANGE IN4 SELECTION INPUT RANGE IN5 SELECTION INPUT RANGE IN6 SELECTION INPUT RANGE *IN7 SELECTION INPUT ...

Page 13

Table 1. Address Map EEPROM REGISTER READ/ MEMORY ADDRESS WRITE ADDRESS 00h — R 01h — R 02h — R 03h — R 04h — R 05h — R 06h — R 07h — R 08h — R 09h — ...

Page 14

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 1. Address Map (continued) EEPROM REGISTER READ/ MEMORY ADDRESS WRITE ADDRESS 25h A5h R/W 26h A6h R/W 27h A7h R/W 28h A8h R/W 29h A9h R/W 2Ah AAh R/W 2Bh ABh R/W ...

Page 15

Table 1. Address Map (continued) EEPROM REGISTER READ/ MEMORY ADDRESS WRITE ADDRESS 4Bh CBh R/W 4Ch CCh R/W 4Dh CDh R/W 4Eh CEh R/W 4Fh CFh R/W 50h D0h R/W 51h D1h R/W 52h D2h R/W 53h D3h R/W 54h ...

Page 16

EEPROM-Based System Monitors with Nonvolatile Fault Memory Detailed Description The MAX16031/MAX16032 contain both I JTAG serial interfaces for accessing registers and EEPROM. Use only one interface at any given time. For more information on how to access the internal memory ...

Page 17

Table 2. Input Monitor Ranges and Enables (continued) EEPROM REGISTER MEMORY ADDRESS ADDRESS 18h 98h 1Ah 9Ah ______________________________________________________________________________________ EEPROM-Based System Monitors with Nonvolatile Fault Memory BIT RANGE IN5 Voltage Range Selection: [1: 5.6V 2. ...

Page 18

EEPROM-Based System Monitors with Nonvolatile Fault Memory a -1V differential input (range of 5.6V) gives a decimal code of -183, which is 1101001001 in two’s comple- ment binary form. In single-ended mode, conversions are performed between a single input and ...

Page 19

Current Monitoring The MAX16031 provides current-sense inputs CS+/CS- and a current-sense amplifier for current monitoring (see Figure 3). There are two programmable current- sense thresholds: primary overcurrent and secondary overcurrent. For fast fault detection, the primary over- current threshold is ...

Page 20

EEPROM-Based System Monitors with Nonvolatile Fault Memory ABP I I LOW HIGH DXP_ V ~ 100mV BIAS DXN_ I BIAS ABP Figure 4. Remote Temperature Sensor Amplifier Circuitry The ADC converts the internal sensor and remote sen- sor amplifier outputs. ...

Page 21

Table 6. Temperature Sensor Fault Enable, Current-Sense Fault Enable, SMBALERT# Enable, and Temperature Offset Trim EEPROM REGISTER MEMORY ADDRESS ADDRESS 1Bh 9Bh 4Dh CDh ing diode open/short fault conditions, and the corre- sponding diode open/short flags must be cleared to ...

Page 22

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 7. ADC Conversion Registers EEPROM REGISTER MEMORY ADDRESS ADDRESS 00h — 01h — 02h — 03h — 04h — 05h — 06h — 07h — 08h — 09h — 0Ah — 0Bh ...

Page 23

Table 8. Output Dependencies EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS [0] [1] [2] [3] 1Dh 9Dh [4] [5] [6] [7] [0] [1] [2] [3] 1Eh 9Eh [4] [5] [6] [7] [0] 1Fh 9Fh [1] [2] ______________________________________________________________________________________ EEPROM-Based System Monitors ...

Page 24

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 8. Output Dependencies (continued) EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS [3] [4] 1Fh 9Fh [5] [6] [7] [2:0] 20h A0h [5:3] [7:6] 24 ______________________________________________________________________________________ DESCRIPTION 1 = OVERT depends on the ...

Page 25

Table 8. Output Dependencies (continued) EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS [0] [1] [2] [3] 21h A1h [4] [5] [6] [7] [2:0] 22h A2h [5:3] [6] [7] ______________________________________________________________________________________ EEPROM-Based System Monitors with Nonvolatile Fault Memory DESCRIPTION 1 = RESET ...

Page 26

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 8. Output Dependencies (continued) EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS [0] [1] [2] [3] 23h A3h [4] [5] [6] [7] [2:0] 24h A4h [5:3] [6] [7] 26 ______________________________________________________________________________________ DESCRIPTION 1 = ...

Page 27

Table 8. Output Dependencies (continued) EEPROM REGISTER MEMORY BIT RANGE ADDRESS ADDRESS [0] [1] [2] [3] 25h A5h [4] [5] [6] [7] The MAX16031/MAX16032 offer many configurable options for detecting and managing system faults. Fault thresholds are set in r26h–r4Eh, ...

Page 28

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 9. Fault Thresholds (continued) EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS 34h B4h [7:0] 35h B5h [7:0] 36h B6h [7:0] 37h B7h [7:0] 38h B8h [7:0] 39h B9h [7:0] 3Ah BAh [7:0] ...

Page 29

Table 10. Fault Masks EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS [0] [1] 54h D4h [2] [3] [7:4] [0] [1] [2] [3] 55h D5h [4] [5] [6] [7] [0] [1] [2] [3] 56h D6h [4] [5] [6] [7] [0] [1] ...

Page 30

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 11. Fault Flags EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS [ Short circuit detected at remote temperature sensor 1. [ Open circuit detected at remote temperature sensor 1. ...

Page 31

Table 12. Fault Log Dependency EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS [ Fault log triggered when IN1 is below its primary undervoltage threshold. [ Fault log triggered when IN2 is below its primary undervoltage threshold. ...

Page 32

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 13. Fault Log EEPROM EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS — 80h [7:0] — 81h [7:0] — 82h [7:0] — 83h [7:0] — 84h [7:0] — 85h [7:0] — 86h [7:0] ...

Page 33

Send Byte Format S ADDRESS R/W ACK COMMAND ACK 7 bits 0 8 bits Slave Address: Address Data Byte: Presets the internal of the slave on the serial address pointer or represents interface bus. a command. Write Byte Format S ...

Page 34

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 14. Miscellaneous Settings EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS [3:0] 5Bh DBh [6:4] [1:0] 5Ch DCh [4:3] 34 ______________________________________________________________________________________ Postboot Timeout (all faults and outputs masked timeout 1h ...

Page 35

Table 14. Miscellaneous Settings (continued) EEPROM REGISTER BIT MEMORY ADDRESS RANGE ADDRESS [6] 5Ch DCh [7] 5Eh DEh [7:0] [0] 5Fh DFh [1] [7:2] 2 Table 15. Setting the I C/SMBus Slave Address A1 A0 GND GND GND N.C. GND ...

Page 36

EEPROM-Based System Monitors with Nonvolatile Fault Memory V DBP R PU TDI TMS TCK Figure 6. JTAG Block Diagram Run-Test/Idle: The run-test/idle state is used between scan operations or during specific tests. The instruction register and test data registers remain ...

Page 37

TEST-LOGIC-RESET RUN-TEST/IDLE 0 Figure 7. TAP Controller State Diagram Exit2-DR: A rising edge on TCK with TMS high while in this state puts the controller in the update-DR state. A rising edge on TCK with TMS low ...

Page 38

EEPROM-Based System Monitors with Nonvolatile Fault Memory Exit1-IR: A rising edge on TCK with TMS low puts the controller in the pause-IR state. If TMS is high on the ris- ing edge of TCK, the controller enters the update-IR state. ...

Page 39

Table 17. 32-Bit Identification Code MSB Version (4 bits) 0000 Table 18. 32-Bit User-Code Data MSB 2 I C/SMBus D.C. (don’t cares) Slave Address 00000000000000000 See Table 15 USERCODE: When the USERCODE instruction is latched into the parallel instruction register, ...

Page 40

EEPROM-Based System Monitors with Nonvolatile Fault Memory Table 19. Boundary Cell Order BOUNDARY CELL NO. DESCRIPTION/PIN 0–147 148 149 150 151 152 153 154 155 156 157–182 183 184 185 186 187 188 189 190 191–197 40 ______________________________________________________________________________________ Table 20. ...

Page 41

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 41 © 2010 Maxim Integrated Products ...

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