MCP79410-I/SN Microchip Technology, MCP79410-I/SN Datasheet

IC RTC/CALENDER 8SOIC

MCP79410-I/SN

Manufacturer Part Number
MCP79410-I/SN
Description
IC RTC/CALENDER 8SOIC
Manufacturer
Microchip Technology
Type
Clock/Calendar/EEPROMr
Datasheet

Specifications of MCP79410-I/SN

Package / Case
8-SOIC (0.154", 3.90mm Width)
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Memory Size
1K (128 x 8)
Interface
I²C, 2-Wire Serial
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Function
Clock/Calendar
Rtc Memory Size
64 B
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
I2C
Supply Current
400 uA
Clock Format
HH
Clock Ic Type
RTC
Ic Interface Type
I2C
Memory Configuration
128 X 8
Supply Voltage Range
1.8V To 5.5V
Digital Ic Case Style
SOIC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP79410-I/SN
Manufacturer:
FUJI
Quantity:
23
Part Number:
MCP79410-I/SN
Manufacturer:
MICROCHI
Quantity:
20 000
Part Number:
MCP79410-I/SN
0
Device Selection Table
Features:
• Real-Time Clock/Calendar (RTCC), Battery
• On-Chip Digital Trimming/Calibration:
• Programmable Open-Drain Output Control:
• 64 Bytes SRAM, Battery Backed
• 1 Kbits EEPROM (128x8):
• Separate 64-Bit Unique ID:
• Automatic V
• Power-Fail Time-Stamp for Battery Switchover
• Low-Power CMOS Technology:
• 100 kHz and 400 kHz Compatibility
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Packages include 8-Lead SOIC, TSSOP, 2x3
• Pb-Free and RoHS Compliant
• Temperature Ranges:
 2010 Microchip Technology Inc.
MCP79410
MCP79411
MCP79412
Backed:
- Hours, Minutes, Seconds, Day of Week, Day,
- Dual alarm with single output
- Range -127 to +127 ppm
- Resolution 1 ppm
- CLKOUT with 4 selectable frequencies
- Alarm output
- 8 bytes/page
- Block/sector write protection
- Protect none, 1/4, 1/2 or all of array
- User or factory programmable
- Protected area
- EUI-48
- Custom ID programming
Supply
- Dynamic Current: 400 A max read
- Dynamic Current: 3mA max EEPROM write
- Battery Backup Current: <700nA @ 1.8V
TDFN, MSOP
- Industrial (I): -40°C to +85°C.
Number
Part
Month and Year
I
2
C™ Real-Time Clock/Calendar with EEPROM, SRAM,
or EUI-64
CC
EEPROM
(Kbits)
Switchover to V
1K
1K
1K
MAC address
Unique ID and Battery Switchover
(Bytes)
SRAM
64
64
64
BAT
Backup
MCP79410/MCP79411/MCP79412
Unique ID
EUI-48
EUI-64
Blank
Preliminary
Description:
The MCP7941X series of low-power Real-Time Clocks
(RTC) uses digital timing compensation for an accurate
clock/calendar, a programmable output control for
versatility, a power sense circuit that automatically
switches to the backup supply, and nonvolatile memory
for data storage. Using a low-cost 32.768 kHz crystal,
it tracks time using several internal registers. For
communication, the MCP7941X uses the I
The clock/calendar automatically adjusts for months
with fewer than 31 days, including corrections for
leap years. The clock operates in either the 24-hour
or 12-hour format with an AM/PM indicator and
the week, date or month. Using the programmable
CLKOUT, frequencies of 32.768, 8.192 and 4.096
kHz and 1 Hz can be generated from the external
crystal.
Along with the on-board Serial EEPROM and battery-
backed SRAM memory, a 64-bit protected space is
available for a unique ID or MAC address to be
programmed at the factory or by the end user.
The device is fully accessible through the serial
interface while V
operate down to 1.3V for timekeeping and SRAM
retention only.
The RTC series of devices are available in the standard
8-lead SOIC, TSSOP, MSOP and 2x3 TDFN packages.
Package Types
settable alarm(s) to the second, minute, hour, day of
V
V
X1
X2
BAT
V
SS
V
BAT
X1
X2
SS
1
2
3
4
SOIC, TSSOP
1
2
3
4
MSOP
CC
is between 1.8V and 5.5V, but can
8
7
6
5
8
7
6
5
V
MFP
SCL
SDA
V
MFP
SCL
SDA
CC
CC
V
V
BAT
X1
X2
SS
1
2
4
3
DS22266A-page 1
TDFN
2
C™ bus.
8
7
6
5
V
MFP
SCL
SDA
CC

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MCP79410-I/SN Summary of contents

Page 1

... TDFN, MSOP • Pb-Free and RoHS Compliant • Temperature Ranges: - Industrial (I): -40°C to +85°C.  2010 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 clock/calendar, a programmable output control for ...

Page 2

... MCP7941X FIGURE 1-1: TYPICAL OPERATING CIRCUIT X1 RTCC Time-Stamp/ SRAM Alarms Switch I BAT BAT V SS EEPROM ID DS22266A-page MFP 2 C™ SCL SDA Preliminary  2010 Microchip Technology Inc. ...

Page 3

... 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  2010 Microchip Technology Inc. Electrical Characteristics: Industrial (I +1.8V to 5.5V CC Min. Typ. Max. Units — — — 0.7 V — ...

Page 4

... 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)  2010 Microchip Technology Inc. ...

Page 5

... FIGURE 1-2: BUS TIMING DATA 5 SCL 7 3 SDA SDA Out  2010 Microchip Technology Inc Preliminary MCP7941X DS22266A-page 5 ...

Page 6

... 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 DS22266A-page 6 Table 2-1. Preliminary  2010 Microchip Technology Inc. ...

Page 7

... SCL SDA Start Condition  2010 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 ...

Page 8

... 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  2010 Microchip Technology Inc. or ...

Page 9

... 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  2010 Microchip Technology Inc. for the NO Preliminary MCP7941X DS22266A-page 9 ...

Page 10

... Month 01-12 01h Reserved 01h Seconds 00-59 00h Minutes 00-59 00h Hours 1-12 + AM/PM 00h 00-23 Day 1-7 01h Date 01-31 01h Month 01-12 01h Reserved 01h 00h 00h 00h 00h 00h 00h 00h 00h  2010 Microchip Technology Inc. ...

Page 11

... Contains the BCD year and 10 year. The Range is 00-99. 0x07h – Is the Control register.  2010 Microchip Technology Inc. • Bit 7 is the OUT bit. This sets the logic level on the MFP when not using this as a square wave out- put. • ...

Page 12

... This will allow the unique EEPROM locations to be written. After the byte or page write to these locations, the write sequence is initiated by the Stop condition. At this time, the ID locations are locked and no further writes are possible to this location unless a complete unlock sequence is repeated. Preliminary  2010 Microchip Technology Inc. ...

Page 13

... The frequencies listed in the table presume an input clock source of exactly 32.768 kHz. In terms of the equivalent number of input clock cycles, the table becomes: FIGURE 4-1: RS1 AND RS0 WITH AND WITHOUT CALIBRATION  2010 Microchip Technology Inc. RS2 RS1 With regards to the calibration function, the Calibration register setting has no impact upon the MFP output clock signal when bits RS1 and RS0 are set to ‘ ...

Page 14

... Preliminary mode BAT mode BAT mode, other modes are suspended. pin BAT DD supply. The BAT Read/Write Powered Access By < BAT BAT < V Yes V CC BAT CC > V Yes V CC BAT CC  2010 Microchip Technology Inc. ...

Page 15

... 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  2010 Microchip Technology Inc. voltage. To TRIP Preliminary ...

Page 16

... S T CONTROL ADDRESS A BYTE BYTE ADDRESS BYTE DATA BYTE Note: Entering an address past 5F for an SRAM operation will result in the MCP7941X not acknowledging the address. . BAT Preliminary supply is present and BAT supply for retention DATA DATA BYTE  2010 Microchip Technology Inc. ...

Page 17

... As with the byte write operation, once the Stop condition is received, an internal write cycle will begin (Figure 5-4).  2010 Microchip Technology Inc. Note: Page write operations are limited to writing bytes within a single physical page, regardless of the number of bytes actually ...

Page 18

... Preliminary S T DATA DATA BYTE CURRENT ADDRESS READ (EEPROM SHOWN CONTROL DATA A T BYTE BYTE (Figure 5-2). After a random read  2010 Microchip Technology Inc. ...

Page 19

... The unique ID can be factory programmed on some devices to provide a unique IEEE EUI-48 or EUI-64 value. In addition, customer-provided codes can also be programmed.  2010 Microchip Technology Inc. master, the master will NOT generate an Acknowledge but will generate a Stop condition. To provide sequential reads, the MCP7941X contains an internal Address Pointer which is incremented by one at the completion of each operation ...

Page 20

... TSSOP XXXX TYWW NNN 8-Lead MSOP XXXXX YWWNNN 8-Lead 2x3 TDFN XXX YWW NN Part Number MCP79410 MCP79411 MCP79412 Note Temperature grade NN = Alphanumeric traceability code Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘ ...

Page 21

... Microchip Technology Inc. α φ β Preliminary MCP7941X DS22266A-page 21 ...

Page 22

... MCP7941X DS22266A-page 22 Preliminary  2010 Microchip Technology Inc. ...

Page 23

... Microchip Technology Inc. I Preliminary MCP7941X φ DS22266A-page 23 ...

Page 24

... MCP7941X DS22266A-page 24 I Preliminary  2010 Microchip Technology Inc. φ ...

Page 25

... Microchip Technology Inc. Preliminary MCP7941X DS22266A-page 25 ...

Page 26

... MCP7941X DS22266A-page 26 Preliminary  2010 Microchip Technology Inc. ...

Page 27

... APPENDIX A: REVISION HISTORY Revision A (10/2010) Original release of this document.  2010 Microchip Technology Inc. Preliminary MCP7941X DS22266A-page 27 ...

Page 28

... MCP7941X NOTES: DS22266A-page 28 Preliminary  2010 Microchip Technology Inc. ...

Page 29

... To register, access the Microchip web site at www.microchip.com. Under “Support”, “Customer Change Notification” and follow the registration instructions.  2010 Microchip Technology Inc. CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • Local Sales Office ...

Page 30

... 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? DS22266A-page 30 FAX: (______) _________ - _________ N Preliminary Total Pages Sent ________ Literature Number: DS22266A  2010 Microchip Technology Inc. ...

Page 31

... Plastic Micro Small Outline (1) MNY = 8-Lead Plastic Dual Flat, No Lead Note 1: ’Y’ indicates a Nickel Palladium Gold (NiPdAu) finish.  2010 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 2 C Serial RTCC ...

Page 32

... MCP7941X NOTES: DS22266A-page 32 Preliminary  2010 Microchip Technology Inc. ...

Page 33

... 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. ...

Page 34

... 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  2010 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 ...

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