MCP98243-BE/MC Microchip Technology, MCP98243-BE/MC Datasheet
MCP98243-BE/MC
Specifications of MCP98243-BE/MC
Available stocks
Related parts for MCP98243-BE/MC
MCP98243-BE/MC Summary of contents
Page 1
... Specification JC42.4-TSE2002B3 Memory Module Thermal Sensor Component. It provides an accuracy of ±0.2°C/±1°C (typical/maximum) from +75°C to +95°C. In addition, MCP98243 has an internal 256 Byte EEPROM which can be used to store memory module and vendor information. The MCP9843/98243 digital temperature sensor comes with user-programmable registers that provide flexibility for DIMM temperature-sensing applications ...
Page 2
... Note: This accuracy data from the production system represents the typical accuracy performance of the MCP98242 Memory Module Temperature Sensor. The MCP98242 production methodology is also used for the MCP9843/98243 to achieve the same typical accuracy performance. MCP98243 VS. MCP98242 Feature Event Output in Shutdown Mode 2 ...
Page 3
... CONV Power Supply Specified Voltage Range Operating Voltage Range Operating Current I DD_TS Shutdown Current - MCP9843 I SHDN MCP98243 Power On Reset (POR) V POR_TS Δ°C/ΔV Power Supply Rejection +25°C A Event Output (Open-Drain output, external pull-up or pull-down resistor required), see Section 5.2.3 High-level Current (leakage) ...
Page 4
... MCP9843/98243 MCP98243 EEPROM DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V and T = -20°C to +125°C. A Parameters Sym Power Supply Operating Voltage Range V Current, EEPROM write I DD_EE Current, EEPROM read I DD_EE Power On Reset (POR) V POR_EE Write Cycle time (byte/page Endurance T = +25°C — ...
Page 5
... POR resets and acknowledges a shutdown com- mand receiver, SDA should not be sampled at the falling edge of SCL. SDA can transition t SCL toggles Low. © 2009 Microchip Technology Inc. MCP9843/98243 = -20°C to +125°C, and ...
Page 6
... JA θ — 41 — exceed Maximum Junction Temperature (+150°C). J Data Transmission V DD Voltage Current I OH time = 3.0V to 3.6V for DD Units Conditions °C Note 1 °C °C °C/W °C/W °C/W °C/W Stop Condition OUTPUT © 2009 Microchip Technology Inc. ...
Page 7
... Temperature Accuracy (°C) FIGURE 2-3: Temperature Accuracy Histogram +75°C. A © 2009 Microchip Technology Inc. MCP9843/98243 = 2.7V to 5.5V, GND = Ground, SDA/SCL pulled- 10000 1000 EEPROM Write (Sensor in Shutdown Mode) 100 Sensor (EEPROM Inactive) 10 EEPROM Read (Sensor in Shutdown Mode) 1 -40 ...
Page 8
... FIGURE 2-12: Response. , and DD = 0.6V - 100 120 T (°C) A SDA I vs. Temperature. OL Δ°C/ΔV = 0.4° 5. 100 120 T (°C) A Temperature Accuracy vs. TSSOP-8 DFN-8 22°C (Air) to 125°C (Oil bath Time (s) Package Thermal © 2009 Microchip Technology Inc. ...
Page 9
... Voltage Range. 3.00 2.50 2.00 1.50 1.00 0.50 0.00 -40 - (° FIGURE 2-14: Shutdown Current vs. Temperature. © 2009 Microchip Technology Inc. = 2.7V to 5.5V, GND = Ground, SDA/SCL pulled- 100 for Pins 1V 4.5 5.0 5.5 1.5 FIGURE 2-15: 100 120 MCP9843/98243 , and Sensor in Shutdown Mode ...
Page 10
... MCP9843/98243 NOTES: DS22153C-page 10 © 2009 Microchip Technology Inc. ...
Page 11
... Serial Data Line (SDA) SDA is a bidirectional input/output pin, used to serially transmit data to/from the host controller. This pin requires a pull-up resistor. (See Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc. Table 3-1. A0 Slave Address and EEPROM Software Write Protect high voltage ...
Page 12
... MCP9843/98243 NOTES: DS22153C-page 12 © 2009 Microchip Technology Inc. ...
Page 13
... An Acknowledge (ACK) from the slave confirms the reception of each byte. Each access must be terminated by a Stop condition (STOP). Repeated communication is initiated after t © 2009 Microchip Technology Inc. MCP9843/98243 This device does not support sequential register read/ write. Each register needs to be addressed using the Register Pointer ...
Page 14
... MCP9843/98243 temperature sensor resets the serial interface. This dictates the minimum clock speed as specified in the specification. However, the EEPROM does not reset the serial interface. Therefore, the master can hold the clock indefinitely to process data from the EEPROM. © 2009 Microchip Technology Inc. , OUT ...
Page 15
... Event FIGURE 5-1: Functional Block Diagram. © 2009 Microchip Technology Inc. MCP9843/98243 mable registers and a 2-wire I serial interface. Figure 5-1 the register structure. MCP98243 EEPROM Band-Gap Temperature Sensor Address Decoder ΣΔ ADC 0.5°C/bit 0.25°C/bit Memory Control 0.125°C/bit Logic 0.0625° ...
Page 16
... Register 5-1 describes the pointer or the address of the ambient each register. W-0 W-0 — Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared ) CRIT ) A MCP9843/98243’s capability in W-0 W-0 W-0 Pointer Bits bit Bit is unknown ) UPPER ) LOWER © 2009 Microchip Technology Inc. ...
Page 17
... LSB 2 °C 0x04 MSB 0 3 LSB 2 °C ≥ T 0x05 MSB CRIT A 3 LSB 2 °C 0x06 MSB 0 LSB 0 0x07 MSB 0 MCP98243 LSB 0 0x07 MSB 0 MCP9843 LSB 0 0x08 LSB 0 © 2009 Microchip Technology Inc. MCP9843/98243 Bit Assignment Range V Resolution Int Clr Evt Stat ...
Page 18
... R-0 R-1 Resolution Meas Range U = Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared Range): U-0 U-0 U-0 — — — bit 8 R-1 R-1 R-1 Accuracy Temp Alarm bit Bit is unknown to re-assert the Event CONV © 2009 Microchip Technology Inc. ...
Page 19
... The part has temperature boundary trip limits (T temperautre event output (JC 42.4 required feature SCL SDA Address Byte MCP9843/98243 SCL A A SDA Address Byte FIGURE 5-2: Timing Diagram for Reading the Capability Register (See Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc. MCP9843/98243 Capability Pointer MCP9843/98243 ...
Page 20
... U = Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared ): HYST register (T ) holds the previous A temperature data (see UPPER to prevent an accidental rewrite. CRIT ‘0000 0001’b R/W-0 R/W-0 T SHDN HYST bit 8 R/W-0 R/W-0 Event Pol. Event Mod. bit Bit is unknown © 2009 Microchip Technology Inc. , ...
Page 21
... Interrupt output This bit cannot be altered when either of the lock bits is set (bit 6 and bit 7). This bit can be programmed in shutdown mode, but Event output will remain de-asserted. © 2009 Microchip Technology Inc. register can be written. (power-up default) Window Lock Bit (Win. Lock): and T registers can be written ...
Page 22
... Communication”. DS22153C-page Configuration Pointer MCP9843/98243 MCP9843/98243 MSB Data MCP9843/98243 // send START command //WRITE Command //also, make sure bit 0 is cleared ‘0’ // Write CONFIG Register // Write data // Write data // send STOP command LSB Data MCP9843/98243 © 2009 Microchip Technology Inc. ...
Page 23
... Address Byte MCP9843/98243 Note: this is an example routine: i2c_start(); i2c_write(AddressByte & 0xFE); i2c_write(0x01); i2c_start(); i2c_write(AddressByte | 0x01); UpperByte = i2c_read(ACK); LowerByte = i2c_read(NAK); i2c_stop(); FIGURE 5-4: Timing Diagram for Reading from the Configuration Register (See Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc ...
Page 24
... U = Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared : , T UPPER LOWER /T / UPPER LOWER (NOTE 1) R/W-0 R/W-0 R/W °C 2 °C 2 °C bit 8 R/W-0 U-0 U °C — — bit Bit is unknown and T located at ‘0000 0010b’, CRIT © 2009 Microchip Technology Inc. ...
Page 25
... Address Byte • Reading from the T Register. UPPER SCL SDA Address Byte MCP9843/98243 SCL A A SDA Address Byte FIGURE 5-5: Timing Diagram for Writing and Reading from the T “Serial Communication”). © 2009 Microchip Technology Inc. MCP9843/98243 Pointer UPPER MCP9843/98243 MCP9843/98243 ...
Page 26
... A is greater than or equal CRIT is greater than T and bit 13 A UPPER is less than LOWER Register 5-5. (NOTE 1) ‘0000 0101’b R-0 R-0 R °C 2 °C 2 °C bit 8 R-0 R-0 R °C 2 °C 2 °C bit Bit is unknown (Register 5-9). © 2009 Microchip Technology Inc. , ...
Page 27
... UpperByte = UpperByte & 0x1F; if ((UpperByte & 0x10) == 0x10){ UpperByte = UpperByte & 0x0F; Temperature = 256 - (UpperByte LowerByte / 16); }else Temperature = (UpperByte LowerByte / 16); FIGURE 5-6: Example Instruction Code. © 2009 Microchip Technology Inc. MCP9843/98243 EQUATION 5-1: Temperature ≥ 0° UpperByte 2 A Temperature < 0°C ...
Page 28
... Timing Diagram for Reading +25.25°C Temperature from the T Section 4.0 “Serial Communication”). DS22153C-page Pointer A MCP9843/98243 MSB Data Master MCP9843/98243 Note not necessary to select the register pointer if it was set from the previous read/write LSB Data Master Register (See A © 2009 Microchip Technology Inc. ...
Page 29
... A A SDA Address Byte MCP9843/98243 FIGURE 5-8: Timing Diagram for Reading the Manufacturer ID Register (See Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc. MCP9843/98243 R-0 R-0 Manufacturer ID R-1 R-0 Manufacturer Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared ...
Page 30
... The upper byte of this register is used to specify the device identification and the lower byte is used to specify device revision. The device ID for the MCP98243 is 0x21 (hex) and the MCP9843 is 0x00 (hex). The revision (Lower Byte) begins with 0x00 (hex) for the first release, with the number being incremented as revised versions are released ...
Page 31
... Address Byte MCP9843/98243 FIGURE 5-9: Timing Diagram for Changing T Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc. MCP9843/98243 “Temperature ‘0000 1000’b U-0 U-0 — — Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared = 30 ms typical typical) CONV ...
Page 32
... When this feature is selected, the Event output becomes a comparator output. In this mode, the interrupt output configuration (bit 0 of CONFIG) is ignored. Figure 5-11 for MCP9843/98243 Active-High Event Output V DD MCP9843/98243 R PU Active-Low Event Output and T registers. The bits LOWER CRIT © 2009 Microchip Technology Inc. ...
Page 33
... This mode is designed for interrupt driven microcontroller based systems. The microcontroller receiving the interrupt will have to acknowledge the interrupt by setting bit 5 of CONFIG register from the MCP9843/98243. © 2009 Microchip Technology Inc. MCP9843/98243 5.2.4 TEMPERATURE RESOLUTION The MCP9843/98243 device is capable of providing a temperature data with 0.5° ...
Page 34
... Output State (Active Low/High) High/Low Low/High Low/High Low/High Low/High Low/High High/Low Low/High Low/High Low/High < the Interrupt Mode, if Interrupt is not cleared A CRIT HYST Low/High High/Low CRIT HYST UPPER HYST LOWER HYST Critical T Bits High/Low High/Low High/Low High/Low Low/High High/Low © 2009 Microchip Technology Inc. ...
Page 35
... MCP98243 EEPROM FEATURE DESCRIPTION 5.3.1 BYTE WRITE To write a byte in the MCP98243 EEPROM, the master has to specify the memory location or address. Once the address byte is transmitted correctly followed by a word address, the word address is stored in the EEPROM address pointer. The following byte is data to be stored in the specified memory location ...
Page 36
... MCP9843/98243 5.3.2 PAGE WRITE The write Address Byte, word address and the first data byte are transmitted to the MCP98243 in the same way byte write. Instead of generating a Stop condition, the master transmits additional data bytes to the MCP98243, which are temporarily stored in the on-chip page buffer and will be written into the memory after the master has transmitted a Stop condition ...
Page 37
... WRITE PROTECTION The MCP98243 has a Software Write-Protect (SWP) feature that allows the lower half array (addresses 00h - 7Fh write-protected or permanently write- protected (PWP). The write protected area can be cleared by sending Clear Write Protect (CWP) command. However, once the PWP is executed the protected memory can not be cleared ...
Page 38
... The device response in this mode is shown in Table 5- Word Address MCP98243 MCP98243 at A1 pin, connect A2 pin to GND to initiate CWP cycle. DD 5-3. Both A2 and A1 pins are grounded Table Data MCP98243 and the corresponding slave DD Table 5-4 and Data MCP98243 © 2009 Microchip Technology Inc. ...
Page 39
... PWP. The state of A2, A1, and A0 is user selectable. However, the address pin states need to Table 5-4 and match the slave address bits, as shown Word Address MCP98243 MCP98243 must be within the range of GND Figure 2-13 voltage levels not applied on the A0 HV Table 5- Data MCP98243 + 1V to execute PWP. DD DS22153C-page 39 ...
Page 40
... Upon receipt of n+1 the slave address with R/W bit set to ‘1’, the MCP98243 issues an acknowledge and transmits the 8-bit data 1 2 SCL SDA S ...
Page 41
... Microchip Technology Inc. set. The master then issues the Address Byte again, but with the R/W bit set to a ‘1’. The MCP98243 then issues an acknowledge and transmits the 8-bit data word. The master will not acknowledge the transfer but ...
Page 42
... Sequential reads are initiated in the same way as a random read, with the exception that after the MCP98243 transmits the first data byte, the master issues an acknowledge, as opposed to a stop condition in a random read. This directs the MCP98243 to transmit the next sequentially addressed 8-bit word (Figure 5-20). ...
Page 43
... CONFIG 0x02 T UPPER 0x03 T LOWER 0x04 T CRIT 0x05 T 0x06 Manufacturer ID 0x07 Device ID/ Device Revision for MCP98243 0x07 Device ID/ Device Revision for MCP9843 0x08 Resolution © 2009 Microchip Technology Inc. MCP9843/98243 glitches DD thresholds, the Default Register Data (Hexadecimal) 0x00EF 0x0000 0x0000 0x0000 ...
Page 44
... MCP9843/98243 NOTES: DS22153C-page 44 © 2009 Microchip Technology Inc. ...
Page 45
... PCB temperature to the sensor die. For good temperature sensitivity, add a ground layer under the device pins as shown in FIGURE 6-1: DFN Package Layout. © 2009 Microchip Technology Inc. 6.2 Thermal Considerations A potential for self-heating errors can exist if the MCP9843/98243 SDA, SCLK and Event lines are heavily loaded with pull-ups (high current) ...
Page 46
... MCP9843/98243 NOTES: DS22153C-page 46 © 2009 Microchip Technology Inc. ...
Page 47
... PACKAGING INFORMATION 7.1 Package Marking Information 8-Lead 2x3x0.9 DFN XXX MCP9843-BE/MC YWW MCP9843T-BE/MC NN MCP98243-BE/MC MCP98243T-BE/MC 8-Lead 2x3x0.75 TDFN XXX MCP9843T-BE/MNY YWW MCP98243T-BE/MNY NN 8-Lead 2x3x0.5 UDFN XXX MCP98243T-BE/MUY YWW NN 8-Lead TSSOP XXXX XYWW NNN Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) ...
Page 48
... MCP9843/98243 D N NOTE TOP VIEW A3 DS22153C-page EXPOSED PAD BOTTOM VIEW A NOTE NOTE © 2009 Microchip Technology Inc. ...
Page 49
... Microchip Technology Inc. MCP9843/98243 DS22153C-page 49 ...
Page 50
... MCP9843/98243 DS22153C-page 50 © 2009 Microchip Technology Inc. ...
Page 51
... Microchip Technology Inc. MCP9843/98243 DS22153C-page 51 ...
Page 52
... MCP9843/98243 DS22153C-page 52 © 2009 Microchip Technology Inc. ...
Page 53
... Microchip Technology Inc. MCP9843/98243 DS22153C-page 53 ...
Page 54
... MCP9843/98243 D N NOTE DS22153C-page φ L © 2009 Microchip Technology Inc. ...
Page 55
... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2009 Microchip Technology Inc. MCP9843/98243 DS22153C-page 55 ...
Page 56
... MCP9843/98243 NOTES: DS22153C-page 56 © 2009 Microchip Technology Inc. ...
Page 57
... Added Register 5-8 for MCP9843 device. 4. Updated Section 7.1 “Package Marking Infor- mation”. Revision B (October 2009) The following is the list of modifications: 1. Added MCP98243 vs MCP98242 comparison table. 2. Added EEPROM Write temperature Range Changed I C time out minimum specification to 25 ms. 4. Replaced Figure 2-5 ...
Page 58
... MCP9843/98243 NOTES: DS22153C-page 58 © 2009 Microchip Technology Inc. ...
Page 59
... Extended Temp., 8LD TSSOP pkg. MCP9843T-BE/MNY: Tape and Reel, Extended Temp., 8LD TDFN (nickel palladium gold) pkg. MCP98243-BE/MC: Extended Temp., 8LD DFN pkg. MCP98243T-BE/MC: Tape and Reel, Extended Temp., 8LD DFN pkg. MCP98243-BE/ST: Extended Temp., 8LD TSSOP pkg. MCP98243T-BE/ST: Tape and Reel, Extended Temp ...
Page 60
... MCP9843/98243 NOTES: DS22153C-page 60 © 2009 Microchip Technology Inc. ...
Page 61
... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
Page 62
... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...