cat34ts02 ON Semiconductor, cat34ts02 Datasheet
cat34ts02
Available stocks
Related parts for cat34ts02
cat34ts02 Summary of contents
Page 1
... Ground SS © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice DESCRIPTION The CAT34TS02 combines a 12-bit (plus Sign bit) Digital Output Temperature Sensor (TS) with 2-Kb of Serial Presence Detect (SPD) EEPROM. The TS measures temperature aproximately 10 times every second. Temperature readings can be retrieved ...
Page 2
... CAT34TS02 ABSOLUTE MAXIMUM RATINGS Operating Temperature Storage Temperature Voltage on any pin with respect to Ground RELIABILITY CHARACTERISTICS Symbol Parameter (4) N Endurance (EEPROM) END T Data Retention (EEPROM) DR TEMPERATURE CHARACTERISTICS = −20°C to +125° 3 3.6 V, unless otherwise specified A CC Parameter Temperature Reading Error Class B, JC42 ...
Page 3
... A valid temperature reading can not be expected sooner than approx. 100ms after V © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice to 0. 0.75V 3mA (V > 2.5V 1mA ( Test Conditions/Comments CAT34TS02 Min Max (2) 10 400 0.6 1.3 0.6 0.6 0 100 300 300 0.6 1.3 0.9 100 50 5 100 10 <2.5V 100pF ...
Page 4
... START and STOP conditions. The CAT34TS02 acts as a Slave device. Master and Slave alternate as transmitter and receiver CAT34TS02 devices may be present on the bus simultaneously, and can be individually addressed by matching the logic state of the address inputs A0, A1, and A2. ...
Page 5
... Characteristics subject to change without notice EEPROM PREAMBLE DEVICE ADDRESS 1 START t t HIGH LOW LOW t HD:DAT t t HD:STA SU:DAT CAT34TS02 STOP BIT ACKNOWLEDGE t SU:STO t BUF Doc. No. MD-1129 Rev. C ...
Page 6
... The internal Write cycle, using the most recently loaded data, then starts immediatelly following the STOP. Acknowledge Polling Acknowledge polling can be used to determine if the CAT34TS02 is busy writing to EEPROM ready to accept commands. Polling is executed by interrogating the device with a ‘Selective Read’ command (see READ OPERATIONS) ...
Page 7
... K SLAVE REGISTER ADDRESS ADDRESS DATA (MSB ACK t WR STOP CONDITION BYTE ADDRESS (n) DATA NOTE: IN THIS EXAMPLE n = XXXX 0000(B CAT34TS02 DATA DATA (LSB ...
Page 8
... EEPROM address counter will point to the first location in memory. The two address counters may be updated by subsequent operations. A CAT34TS02 presented with a Slave address containing a ‘1’ in the R/W ¯ ¯ position will acknowledge the Slave address and will then start transmitting data being pointed at by the current EEPROM data or respectively TS register address counter ...
Page 9
... ADDRESS ADDRESS ( REGISTER SLAVE R ADDRESS ADDRESS Read DATA n DATA n+1 9 CAT34TS02 DATA (LSB SLAVE O C ...
Page 10
... In contrast to a regular memory Read, a SWP Read does not return Data. Instead the CAT34TS02 will respond with NoACK if the flag is set and with ACK if the flag is not set. Therefore, the Master can immediately follow up with a STOP, as there is no meaningful data following the ACK interval (Figure 13) ...
Page 11
... Don't Care S BUS ACTIVITY SLAVE R MASTER ADDRESS T SDA LINE S A SLAVE CAT34TS02 Address Data ACK ACK ACK Byte Byte YES X YES X YES YES YES X YES X YES YES NO YES X YES X YES ...
Page 12
... CAT34TS02 TEMPERATURE SENSOR OPERATION The TS component in the CAT34TS02 combines a Proportional to Absolute Temperature (PTAT) sensor with a ∑-Δ modulator, yielding a 12 bit (13 bit including sign) digital temperature representation. The TS is free running on an internal clock, and starts a conversion cycle at least every 100ms. The result of the conversion is stored in the Temperature Value (TV) Register ...
Page 13
... Capability Register (address 0x00, value 0x001F) is output. © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice CAT34TS02 Power-On Default Read/Write 0x001F Read 0x0000 Read/Write 0x0400 Read/Write 0x00A0 Read/Write 0x0500 Read/Write Undefined Read ...
Page 14
... CAT34TS02 CONFIGURATION REGISTER MSB D15 D14 D13 D12 D11 D10 Hysteresis Description Bit 0: Comparator mode (default) ( Interrupt mode 0: Active low (default) ( Active high. 0: EVENT output triggered by alarm or critical temperature event (default) ( EVENT output triggered by critical temperature event only ...
Page 15
... Characteristics subject to change without notice Alarm window upper boundary temperature Alarm window lower boundary temperature Critical temperature D10 Temperature 15 CAT34TS02 LSB LSB LSB LSB ...
Page 16
... CAT34TS02 REGISTER DATA FORMAT The values used in the temperature value register and the 3 temperature trip point registers are expressed in two’s complement format. The measured temperature value is expressed with 12-bit resolution, while the 3 trip temperature limits are set with 10-bit resolution. The total temperature range is arbitrarily defined as 256° ...
Page 17
... THE CRITICAL TEMPERATURE Figure 15. Hysteresis Detail BELOW WINDOW BIT ABOVE WINDOW BIT © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice HYSTERESIS AFFECTS THESE TRIP POINTS T H – HYST 17 CAT34TS02 TIME T L – HYST Doc. No. MD-1129 Rev. C ...
Page 18
... CAT34TS02 PACKAGE OUTLINE DRAWING (1)(2) TDFN 8-PAD 2 X 3MM (VP2 PIN#1 INDEX AREA TOP VIEW SYMBO L MIN NOM A 0.70 0.75 A1 0.00 0.02 A2 0.45 0.55 A3 0.20 REF b 0.20 0.25 D 1.90 2.00 D2 1.30 1.40 E 2.90 3.00 E2 1.20 1.30 e 050 TYP L 0.20 0.30 For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. ...
Page 19
... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) This device used in the above example is a CAT34TS02VP2I-GT4 (i.e. TDFN, Industrial Temperature, NiPdAu, Tape & Reel, 4,000/Reel). (4) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. © 2008 SCILLC. All rights reserved. ...
Page 20
... CAT34TS02 REVISION HISTORY Date Revision Description 06-Aug-08 A Initial Issue 15-Aug-08 B Update Power-On Reset, Temperature Sensor Operation and Register 04-Nov-08 C Change logo and fine print to ON Semiconductor ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...