AC164140 Microchip Technology, AC164140 Datasheet
AC164140
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AC164140 Summary of contents
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... 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. MCP79410/MCP79411/MCP79412 Description: The MCP7941X series of low-power Real-Time Clocks Unique ID (RTC) uses digital timing compensation for an accurate ...
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... MCP7941X FIGURE 1-1: TYPICAL OPERATING CIRCUIT X1 RTCC Time-Stamp/ SRAM Alarms Switch I BAT BAT V SS EEPROM ID DS22266B-page MFP 2 C™ SCL SDA Preliminary 2011 Microchip Technology Inc. ...
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... Rise Time (Note CC D15 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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... 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) — = 5.5V Page mode CC (Note 3) 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 Preliminary MCP7941X DS22266B-page 5 ...
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... 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 DS22266B-page 6 Table 2-1. Preliminary 2011 Microchip Technology Inc. ...
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... SCL SDA Start Condition 2011 Microchip Technology Inc. 3.1.1.4 Data Valid (D) The state of the data line represents valid data when, after a Start condition, the data line is stable for the duration of the high period of the clock signal. The data on the line must be changed during the low period of the clock signal ...
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... Preliminary 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 Upon receiving an ‘1010111’ A • • • • • • 0 2011 Microchip Technology Inc. or ...
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... Figure 3-4 flow diagram. FIGURE 3-4: ACKNOWLEDGE POLLING FLOW Send EE Write Command Send Stop Condition to Initiate EE Write Cycle Send Start Send Control Byte with R Did Device Acknowledge (ACK = 0)? YES Next Operation 2011 Microchip Technology Inc. for the NO Preliminary MCP7941X DS22266B-page 9 ...
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... Interrupt polarity and the Alarm 0 Compare. • Addresses 0x11h-0x17h are the same as 0x0Bh- 0x11h but are used for Alarm 1. • Addresses 0x18h-0x1Fh are used for the time- stamp feature. The Memory Map is shown in Table 4-1. DS22266B-page 10 Preliminary 2011 Microchip Technology Inc. ...
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... Minutes 19h 10 Hour 12/24 AM/PM 1Ah 10 Date 1Bh Day 1Ch 10 Minutes 1Dh 10 Hour 12/24 AM/PM 1Eh 10 Date 1Fh Day 2011 Microchip Technology Inc. Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Seconds Minutes 10 Hour Hour V VBATEN Day BAT Date 10 Month Month Year ALM0 ...
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... ALM2POL is a copy of ALM1POL. The default state of the MFP when used for alarms is the inverse of ALM1POL. • ALMxIF: This is the Alarm Interrupt Fag. This bit is set in hardware if the alarm was triggered. The bit is cleared in software. Preliminary process is fully detailed in Sequence”. 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 STATUS REGISTER The STATUS register is in the nonvolatile EEPROM array. To access the STATUS register, the address of 0xFFh is written to and read from ...
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... Calibration register. The MFP waveform will appear as: Delay Preliminary RS0 Output Signal 32768 (32768 +/- (2 * CALREG)) T input = clock period of MFP output signal = clock period of input signal = decimal value of Calibration register setting and the sign is determined by the MSB of Calibration register. 2011 Microchip Technology Inc. ...
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... MSB of the Calibration register. Since the calibration is done every cycle, the frequency of the output MFP waveform is constant. 2011 Microchip Technology Inc. 4.2.4 MFP Pin multi-function pin and supports the following functions: • Use of the OUT bit in the Control register for single bit I/O • ...
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... The second set of registers, located at 0x1Ch through 0x1Fh, are loaded at the time when V is restored and the RTCC switches to V The power-fail time-stamp registers are cleared when the V bit is cleared in software. BAT DS22266B-page 16 voltage. To TRIP Preliminary 2011 Microchip Technology Inc. ...
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... The RTCC and SRAM are not accessible when the device is running on the external V • The RTCC and SRAM are separate blocks. The SRAM array may be accessed during an RTCC update. 2011 Microchip Technology Inc. supply CONTROL ...
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... It is therefore necessary for the application software to prevent page write operations that would attempt to cross a page boundary. Note: Addressing undefined EEPROM locations will result acknowledging the address. Preliminary transmitted. Physical page in the MCP7941X not 2011 Microchip Technology Inc. ...
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... Upon receipt of the control byte with R/W bit set to one, the MCP7941X issues an Acknowledge and transmits the 8-bit data word. The master will not acknowledge the transfer but does generate a Stop condition and the MCP7941X discontinues transmission 2011 Microchip Technology Inc CONTROL ADDRESS ...
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... This Address Pointer allows the entire memory contents to be serially read during one operation. The internal Address Pointer will automatically roll over to the start of the Block ADDRESS CONTROL A BYTE BYTE DATA n DATA DATA Preliminary S 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: 79410I e 3 ...
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... MCP7941X DS22266B-page 22 Preliminary 2011 Microchip Technology Inc. ...
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... Microchip Technology Inc. Preliminary MCP7941X DS22266B-page 23 ...
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... MCP7941X DS22266B-page 24 Preliminary 2011 Microchip Technology Inc. ...
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... D N NOTE 2011 Microchip Technology Inc Preliminary MCP7941X φ L DS22266B-page 25 ...
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... MCP7941X Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22266B-page 26 Preliminary 2011 Microchip Technology Inc. ...
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... D N NOTE 2011 Microchip Technology Inc Preliminary MCP7941X φ L DS22266B-page 27 ...
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... MCP7941X Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22266B-page 28 Preliminary 2011 Microchip Technology Inc. ...
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... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2011 Microchip Technology Inc. Preliminary MCP7941X DS22266B-page 29 ...
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... MCP7941X DS22266B-page 30 Preliminary 2011 Microchip Technology Inc. ...
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... Microchip Technology Inc. Preliminary MCP7941X DS22266B-page 31 ...
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... The external CMOS source is stopped in EXTOSC mode. The work-around is to determine when the OSCON bit is cleared and check in software for AM/PM bit corrup- tion. Devices with silicon revision A4 or later (date code after 11/09) do not have this issue. Preliminary 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? DS22266B-page 34 FAX: (______) _________ - _________ N Preliminary Total Pages Sent ________ Literature Number: DS22266B 2011 Microchip Technology Inc. ...
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... MS = 8-Lead Plastic Micro Small Outline (1) MNY = 8-Lead Plastic Dual Flat, No Lead Note 1: ’Y’ indicates a Nickel Palladium Gold (NiPdAu) finish. 2011 Microchip Technology Inc. Examples: a) MCP79410-I/SN: ture, SOIC package. b) MCP79410T-I/SN: Industrial Tempera- 2 ture, SOIC package, Tape and Reel. C™ Serial RTCC ...
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... MCP7941X NOTES: DS22266B-page 36 Preliminary 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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... 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 Preliminary 2011 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 ...