EMC1053 Standard Microsystems Corp., EMC1053 Datasheet

Page 1

... EMC1053 includes resistance error correction and ideality factor configuration to eliminate major sources of 1 temperature measurement error. An added feature to the EMC1053 is a function that automatically compares the two external temperature zones and reports the hotter of the two temperatures. Selectable conversion rates and standby mode support low-power operation. The temperature measurement ranges support two data ranges (and formats), -64° ...

Page 2

... EMC1053-2-ACZL-TR EMC1053-3-ACZL-TR EMC1053-4-ACZL-TR Evaluation Boards available upon request. (EVB-EMC1053, EVB-EMC1053C) 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2008 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given ...

Page 3

... Configuration Register (03h Read, 09h Write 4.5 Configuration 2 Register - (04h 4.6 One Shot Register - (0Fh 4.7 Ideality Configuration Registers (27h - 28h 4.8 Beta Configuration Registers (29h - 2Ah 4.9 Product ID Register (EDh 4.10 Manufacturer ID Register (FEh 4.11 Revision Register (FFh Chapter 5 Typical Operating Curves Chapter 6 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6.1 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 SMSC EMC1053 3 DATASHEET Revision 1.44 (04-14-08) ...

Page 4

... List of Figures Figure 1.1 EMC1053 Pin Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2.1 System Management Bus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 3.1 EMC1053 Diode System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 3.2 Block Diagram of Temperature Monitoring Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 3.3 External Diode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 6.1 8-Pin MSOP Package Outline - 3x3mm Body 0.65mm Pitch Revision 1.44 (04-14-08) 1°C Triple Temperature Sensor with Resistance Error Correction & Hotter of Two Zones ...

Page 5

... Table 2.3 Write Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 2.4 Read Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 2.5 Send Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 2.6 Receive Byte Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 3.1 Supply Current vs. Conversion Rate and ADC Averaging Factor . . . . . . . . . . . . . . . . . . . . . . 12 Table 3.2 EMC1053 Temperature Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 4.1 EMC1053 Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 4.2 Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 4.3 Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 4.4 Conversion Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 4 ...

Page 6

... SMDATA 8-MSOP 3 6 VDD 4 5 GND Figure 1.1 EMC1053 Pin Diagram Table 1.1 EMC1053 Pin Description DESCRIPTION External Diode 1 Positive (anode) Connection External Diode 1 Negative (cathode) Connection External Diode 2 Positive (anode) Connection External Diode 2 Negative (cathode) Connection Ground Supply Voltage System Management Bus Data - bi-directional data, open drain output ...

Page 7

... Electrical Specifications V =3.0V to 3.6V PARAMETER DC Power Supply Voltage Average Operating Current Internal Temperature Monitor Temperature Accuracy Temperature Resolution SMSC EMC1053 Table 2.1 Absolute Maximum Ratings Table 2.2 Electrical Characteristics = -20°C to +85°C, Typical values 27°C unless otherwise noted A A SYMBOL MIN TYP MAX V 3 ...

Page 8

... A ≤85°C °C -20°C≤T A ≤85°C -20°C≤T °C A °C nF Connected across external diode Note 2 μ SMDATA = 0.6V kHz 50 ns μ s μ s μ s μ s μ μ s μ *Min = 20+0. *Min = 20+0. SMSC EMC1053 ...

Page 9

... System Management Bus Interface Protocol A host controller, such as an SMSC I/O controller, communicates with the EMC1053 via the two wire serial interface named SMBus. The SMBus interface is used to read and write registers in the EMC1053, which is a slave-only device. A detailed timing diagram is shown in ...

Page 10

... Attempting to communicate with the EMC1053 SMBus interface with an invalid slave address or invalid protocol results in no response from the device and does not affect its register contents. The EMC1053 supports stretching of the SMCLK signal by other devices on the SMBus but will not perform this operation itself ...

Page 11

... The average power dissipation will depend on the conversion rate. When the EMC1053 is not actively converting a channel, it goes into a lower power wait state. Standby Mode (power-up default this mode, the EMC1053 is put into a low power state. In the standby mode, temperature monitoring is disabled. The device will still respond to SMBus commands ...

Page 12

... Conversion Rates The EMC1053 may be configured for different conversion rates based on the system requirements. The available rates are 1 full set of conversions per second to 16 full sets of conversions per second. The conversion rate is configured as described in shown in Table 4.4. 3.3.2 Dynamic Averaging The EMC1053 temperature channels support a new feature that measures the external diode channels for an extended time based on the selected conversion rate ...

Page 13

... The negative terminal for the remote temperature diode, DN, is internally biased with a forward diode voltage referenced to ground. The external diodes in the EMC1053 are compatible with a broad range of thermal diodes that may be connected as shown ...

Page 14

... Resistance Error Correction (REC) Resistance error correction is an automatic feature that eliminates the need to characterize and compensate for series resistance in the external diode lines. The EMC1053 corrects for as much as 100 ohms of series resistance. When using a temperature sensor that does not include resistance error correction, voltage developed across the parasitic resistance in the external diode path produces an error in the reported temperature. The error introduced by this resistance is approximately +0.7° ...

Page 15

... Ideality Factor should not be adjusted. Beta Compensation automatically corrects for most ideality errors. 3.9 Diode Faults The EMC1053 detects a fault if the DP pin is left floating or is shorted to VDD. In the case of a diode fault, the corresponding status bit will be set and the output data will be set at 400h. SMSC EMC1053 Section 4.5). Please see Application note “ ...

Page 16

... External Diode 2 Low Byte - Legacy Format FAh N/A R External Diode 1 High Byte - Extended Format FBh N/A R External Diode 1 Low Byte - Extended Format FCh N/A R External Diode 2 HIgh Byte - Extended Format Table 4.1 EMC1053 Register Set SYMBOL INTHBL Sign INTLBL 0.5 0.25 0.125 ET1HBL Sign ET1LBL 0 ...

Page 17

... W One Shot Conversion 27h 27h R/W External Diode 1 Ideality Correction Factor 28h 28h R/W External Diode 2 Ideality Correction Factor 29h 29h R/W External Diode 1 Beta Configuration Table 4.1 EMC1053 Register Set (continued) SYMBOL ET2LBE 0.5 0.25 0.125 Status and Control STS Busy - - HOTT ER CFG - ADC_ST ...

Page 18

... VDD supply surpasses the POR level as specified in the electrical characteristics. Any reads to undefined registers will return 00h. Writes to undefined registers will not have an effect. The EMC1053 uses an interlock mechanism that will update the Low byte of a particular monitor when the High Byte is read. This prevents changes in register content when the ADC updates between successive reads. ...

Page 19

... Config - STANDBY 09h Write The Configuration Register controls the basic functionality of the EMC1053. The bits are described below: Bit 6 - STANDBY- controls the ADC conversions and power modes of the part. '0' - The device is in the run operating mode. The ADC is converting at the user-programmed conversion rate ...

Page 20

... CFG2 - - The Configuration 2 Register controls the basic functionality of the EMC1053 that is NOT compatible with the EMC1023. Bit 3 - MAX_RES - controls the external diode conversion time during dynamic averaging. Although the dynamic averaging may be used to increase the ADC resolution, only 11 bits of data are available in the temperature registers. ‘ ...

Page 21

... All codes that are not listed are reserved and should not be used. Beta Compensation and Resistance Error Correction automatically correct for most diode ideality errors, therefore it is not recommended that these settings be updated without consulting SMSC. SMSC EMC1053 Table 4.6 One Shot Registers B6 ...

Page 22

... Table 4.9 when using a CPU SETTING FACTOR 101000 1.0291 101001 1.0304 101010 1.0317 101011 1.0330 101100 1.0343 101101 1.0356 101110 1.0369 101111 1.0382 110000 1.0395 SMSC EMC1053 ...

Page 23

... Diode 2 Beta - Configuration By default, the beta compensation circuitry is disabled and the EMC1053 is configured to measure discrete diode-connected transistors. Writing to the Beta Configuration Registers will enable the beta compensation circuitry and should be used if measuring a CPU substrate diode. The beta compensation circuit is able to compensate for beta variation within a given range. The beta configuration register is configured to the proper range to match the CPU to be monitored ...

Page 24

... Table 4.1 for a list of the product ID number for each version of the EMC1053. 4.10 Manufacturer ID Register (FEh) ADDR REGISTER B7 FEh SMSC 0 1 The Manufacturer ID register contains an 8 bit word that identifies the manufacturer of the EMC1053 (SMSC = 5Dh). 4.11 Revision Register (FFh) ADDR REGISTER B7 FFh REV - - The Revision register contains a 4 bit word that identifies the die revision ...

Page 25

... Conve rs ion Rate (conv / Tem perature Error vs. Am bient Tem perature (2N3904 27°C, VDD = 3.3V) DIODE 2.0 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2 bient Tem perature (°C) SMSC EMC1053 Tem perature Error vs. Filter Capacitor (2N3904 27°C, T 0.5 0.3 0.0 -0.3 -0.5 -0.8 -1 Tem perature Error vs. External Diode Tem perature 2.0 1.5 1.0 0.5 0.0 -0.5 -1 ...

Page 26

... Typical 65nm CPU from major vendor (TA = 27°C, VDD = 3.3V, BETA = 011 100 26 DATASHEET Datasheet (TA = 27°C) 3.1 3.3 3.5 3.7 Supply Voltage (V) = 0pF) FILT ER Beta Compensation Disabled Beta Compensation Enabled 100 CPU Temperature (°C) SMSC EMC1053 ...

Page 27

... determined at datum plane H. Maximum mold protrusion or flash is 0.15mm (0.006 inches) per end, and 0.15mm (0.006 inches) per side. 4. Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane. 5. Details of pin 1 identifier are optional but must be located within the zone indicated. SMSC EMC1053 MAX REMARKS 1.10 Overall Package Height 0 ...

Page 28

... All devices will be marked on the first line of the top side with “1053”. On the second line, they will be marked with the appropriate -X number (-1, -2, etc), the Functional Revision “B” and Country Code (CC) . Revision 1.44 (04-14-08) 1°C Triple Temperature Sensor with Resistance Error Correction & Hotter of Two Zones 28 DATASHEET Datasheet SMSC EMC1053 ...