MCP7940NT-I/MS Microchip Technology, MCP7940NT-I/MS Datasheet
MCP7940NT-I/MS
Specifications of MCP7940NT-I/MS
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MCP7940NT-I/MS Summary of contents
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... ESD Protection >4,000V • Packages include 8-Lead SOIC, TSSOP, 2x3 TDFN, MSOP • Pb-Free and RoHS Compliant • Temperature Ranges: - Industrial (I): -40°C to +85°C 2011 Microchip Technology Inc. 2 C™ Real-Time Clock/Calendar Description: SRAM The MCP7940N series of low-power Real-Time Clocks ...
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... MCP7940N FIGURE 1-1: TYPICAL OPERATING CIRCUIT X1 RTCC Time-Stamp/ SRAM Alarms Switch BAT BAT V SS DS25010A-page MFP 2 I C™ SCL SDA 2011 Microchip Technology Inc. ...
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... Rise Time (Note CC D14 V V Voltage Range BAT BAT (Note 1) Note 1: This parameter is periodically sampled and not 100% tested. 2: Standby with oscillator running 2011 Microchip Technology Inc. Electrical Characteristics: Industrial (I +1.8V to 5.5V CC Min. Typ. Max. Units — — — 0.7 V — ...
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... CC 1.8V V < 2.5V CC 2.5V V 5.5V CC 1.8V V < 2.5V CC 2.5V V 5.5V CC 1.8V V < 2.5V CC 2.5V V 5.5V CC 1.8V V < 2.5V CC 2.5V V 5.5V CC (Note 1 and Note 2) 2011 Microchip Technology Inc. ...
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... FIGURE 1-2: BUS TIMING DATA 5 SCL 7 3 SDA SDA Out 2011 Microchip Technology Inc MCP7940N DS25010A-page 5 ...
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... Pin Name Pin Function Vss Ground SDA Bidirectional Serial Data SCL Serial Clock X1 Xtal Input, External Oscillator Input X2 Xtal Output V Battery Backup Input (3V Typ) BAT MFP Multi Function Pin Vcc +1.8V to +5.5V Power Supply DS25010A-page 6 Table 2-1. 2011 Microchip Technology Inc. ...
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... DATA TRANSFER SEQUENCE ON THE SERIAL BUS (A) (B) SCL SDA Start Condition 2011 Microchip Technology Inc. 3.1.1.3 Stop Data Transfer (C) A low-to-high transition of the SDA line while the clock (SCL) is high determines a Stop condition. All operations must end with a Stop condition. 3.1.1.4 ...
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... MCP7940N will select a read or write operation. ADDRESS BYTE R/W X • • Data from transmitter Receiver must release the SDA line at this point so the Transmitter can continue sending data. (Figure 3-3). The upper address bits are A • • • • 0 2011 Microchip Technology Inc. ...
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... AM/PM 1Ah 10 Date 1Bh Day 2011 Microchip Technology Inc. Care must be taken when accessing these regis- ters while the oscillator is running. • Incorrect data can appear in the Time and Date registers if a write is attempted during the time frame where these internal registers are being incremented ...
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... ALMxPOL: This bit specifies the level that the MFP will drive when the alarm is triggered. ALM2POL is a copy of ALM1POL. The default state of the MFP when used for alarms is the inverse of ALM1POL. Reset Function Range State 00h 00h 00h 00h 2011 Microchip Technology Inc. ...
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... Note strongly recommended that the timesaver function only be used when the oscillator is running. This will ensure accurate functionality. 2011 Microchip Technology Inc. 4.2 FEATURES 4.2.1 CALIBRATION The MCP7940N utilizes digital calibration to correct for inaccuracies of the input clock source (either external or crystal) ...
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... MFP waveform is constant. 512 method previously described, the (2 * (256 +/- (2 * CALREG))) T input clock period of MFP output signal clock period of input signal decimal value of the Calibration register setting, and the sign is determined by the MSB of the Calibration register. 2011 Microchip Technology Inc. ...
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... V supply must be present and BAT the oscillator must also be running. 2011 Microchip Technology Inc. There are two separate sets of registers that are used to record this information: • The first set located at 0x18h through 0x1Bh are loaded at the time when V operates on the V bit 4) bit is also set at this time ...
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... RTCC update. Upon POR the SRAM will undefined state. Note: Entering an address past 5F for an SRAM operation will result in the MCP7940N not acknowledging the address. DS25010A-page 14 supply BAT S T CONTROL ADDRESS A BYTE BYTE ADDRESS BYTE DATA BYTE DATA DATA BYTE 2011 Microchip Technology Inc. ...
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... A BUS ACTIVITY C K 2011 Microchip Technology Inc. Pointer of the MCP7940N. After receiving another Acknowledge signal from the MCP7940N, the master device transmits the data word to be written into the addressed acknowledges again and the master generates a Stop condition. After a Byte Write command, the internal address counter will point to the address location following the one that was just written ...
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... This Address Pointer allows the entire memory contents to be serially read during one operation. The internal Address Pointer will automat- sequentially ically roll over to the start of the Block ADDRESS CONTROL A BYTE BYTE DATA n DATA DATA DATA T BYTE DATA 2011 Microchip Technology Inc. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2011 Microchip Technology Inc. Example: 7940NI e 3 ...
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... MCP7940N DS25010A-page 18 2011 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP7940N DS25010A-page 19 ...
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... MCP7940N DS25010A-page 20 2011 Microchip Technology Inc. ...
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... D N NOTE 2011 Microchip Technology Inc MCP7940N φ L DS25010A-page 21 ...
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... MCP7940N Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25010A-page 22 2011 Microchip Technology Inc. ...
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... D N NOTE 2011 Microchip Technology Inc MCP7940N φ L DS25010A-page 23 ...
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... MCP7940N DS25010A-page 24 2011 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP7940N DS25010A-page 25 ...
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... MCP7940N DS25010A-page 26 2011 Microchip Technology Inc. ...
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... D N NOTE 2011 Microchip Technology Inc MCP7940N φ L DS25010A-page 27 ...
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... MCP7940N Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS25010A-page 28 2011 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (04/2011) Original release of this document. 2011 Microchip Technology Inc. MCP7940N DS25010A-page 29 ...
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... MCP7940N NOTES: DS25010A-page 30 2011 Microchip Technology Inc. ...
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... To register, access the Microchip web site at www.microchip.com. Under “Support”, “Customer Change Notification” and follow the registration instructions. 2011 Microchip Technology Inc. CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • Local Sales Office ...
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... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS25010A-page 32 FAX: (______) _________ - _________ N Total Pages Sent ________ Literature Number: DS25010A 2011 Microchip Technology Inc. ...
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... Examples: a) MCP7940N-I/SN: Industrial Tempera- ture, SOIC package. b) MCP7940NT-I/SN: Industrial Tempera- 2 ture, SOIC package, Tape and Reel. C™ Serial RTCC 2 C Serial RTCC c) MCP7940NT-I/MNY: Industrial Tempera- ture, TDFN package Serial RTCC d) MCP7940N-I/SN: Industrial Tempera Serial RTCC, ture, SOIC package. e) MCP7940N-I/MS: Industrial Tempera Serial RTCC ture MSOP package ...
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... MCP7940N NOTES: DS25010A-page 34 2011 Microchip Technology Inc. ...
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... PICtail, 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. ...
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... Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-6578-300 Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-213-7830 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2011 Microchip Technology Inc. 02/18/11 ...