LM32EVAL National Semiconductor, LM32EVAL Datasheet
LM32EVAL
Specifications of LM32EVAL
Related parts for LM32EVAL
LM32EVAL Summary of contents
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... Features n SensorPath Interface — 2 hardware programmable addresses Typical Application SensorPath ™ trademark of National Semiconductor Corporation © 2004 National Semiconductor Corporation n 2 remote diode temperature sensor zones n Internal local temperature zone n 0.5 ˚C resolution n Measures temperatures up to 140 ˚C n 14-lead TSSOP package ...
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Connection Diagram TSSOP-14 Top View National Package Number MTC14C Pin Description Pin Number Pin Name 1, 6, 7,12, 13 GND 3 V+/+3.3V_SBY 4 SWD 5 ADD 8, 10 D1-, D2 D1+, D2+ www.national.com Order Number ...
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Block Diagram 3 20071103 www.national.com ...
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Absolute Maximum Ratings (Notes Supply Voltage (V ) Voltage at Any Digital Input or Output Pin Voltage on D1+ and D2+ −0 (V+ + 0.05 V) Current on D1- and D2- Input Current per Pin(Note ...
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SWD and ADD DIGITAL INPUT CHARACTERISTICS Symbol Parameter V SWD Logical High Input Voltage IH V SWD Logical Low Input Voltage IL V ADD Logical High Input Voltage IH V ADD Logical Low Input Voltage IL V Input Hysteresis HYST ...
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AC Electrical Characteristics The following specification apply for =0˚ =85˚C; all other limits MIN MAX specification revision 0.98. Please refer to that speciation for further details. ...
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Timing Diagrams FIGURE 1. Timing for Data Bits 0, 1 and Start Bit. See Section 1.2 "SensorPath BIT SIGNALING" for further details. 7 20071104 www.national.com ...
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Timing Diagrams (Continued) FIGURE 2. Timing for Attention Request and Reset. See Section 1.2 "SensorPath BIT SIGNALING" for further details. www.national.com 8 20071105 ...
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Typical Performance Characteristics Remote Diode Temperature Reading Sensitivity to Diode Filter Capacitance 1.0 Functional Description The LM32 measures 3 temperature zones. The LM32 uses a ∆V temperature sensing method. A differential voltage, be representing temperature, is digitized using a Sigma-Delta ...
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Functional Description Signal labels that begin with the label Slv_ depict the drive by the LM32. All other signals show what would be seen when probing SWD for a particular function (e.g. "Master Wr 0" is the Master transmitting ...
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Functional Description 1.3.2 Read Transaction During a read transaction, the master reads data from a register at a specified address within a slave. A read trans- action begins with a Start Bit and ends with an ACK bit, as ...
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Functional Description • Data Bits This is the data written to the LM32 register, are driven by the master. Data is transferred serially with the most significant bit first. The number of data bits may vary from one address ...
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Functional Description All devices (master or slave) must monitor the bus for an Attention Request signal. The following notes clarify the intended system operation that uses the Attention Request Indication. • Masters are expected to use the attention request ...
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Register Set 2.1 REGISTER SET SUMMARY P Reg Register R/ O Add Name W R MSb Val 000 000 Device R * 00h Number 000 001 Manufacturer R 100Bh 01h ID 000 010 Device ID R 23h 02h 000 ...
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... Reg Register Add Name W R MSb Val Manufacturer 000 001 R 100Bh 0 ID The manufacturer ID matches that assigned to National Semiconductor by the PCI SIG. This register may be used to identify the manufacturer of the device in order to perform manufacturer specific operations Bit 7 Bit 6 Bit Val Reserved TABLE 1 ...
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Register Set (Continued) 2.5 DEVICE ID (Addr: 000 010; 02h) P Reg Register R/ O Add Name W R MSb Val 000 010 Device ID R 23h The device ID is defined by the manufacturer of the device and ...
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Register Set (Continued) 2.8 DEVICE CONTROL (Addr: 000 101; 05h) This register responds to a broadcast write command (Device Number 000). Write using broadcast address is ignored by bits 15-2. This register is set to the reset value by ...
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Register Set (Continued) register clears also the Error Function 1 flag (ERF1). The Readout register contains the temperature data, and the sensor number. Since the LM32 only supports three temperature zones the sensor number field will be zero to ...
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Register Set (Continued) 2.9.3 Temperature Data Readout (Addr: 001 001; 09h) P Bit Reg Register Add Name W R MSb Val Local Temperature Data Readout MSb 001 001 R Processor/ Sign Remote Temperature Data Readout Bit ...
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Register Set (Continued) Temperature - 40 ˚C -255.5 ˚C -256 ˚C 2.9.4 Temperature Control (Addr: 001 010; 0Ah) This register is set to the reset value by a Device Reset. P Reg Register R/ O Add Name W R ...
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Register Set (Continued) LowPwr *Fastest: 2x7.5ms(remote) + 7.5msec (local) = 22.5 ms total The sensor conversion rate is controlled by this register as well as the Low Power Bit of Device Control Register. ...
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Application Hints −19 • 1.6x10 Coulombs (the electron charge), • Absolute Temperature in Kelvin −23 • 1.38x10 joules/K (Boltzmann’s constant), • η is the non-ideality factor of the process the diode is manufactured ...
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Application Hints (Continued) 4. Diode traces should be surrounded by a GND guard ring to either side, above and below if possible. This GND guard should not be between the D+ and D− lines. In the event that noise ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...