CM200S-32.768KDZB-UT datasheet(1/50 Pages) MAS

Part #	CM200S-32.768KDZB-UT

Description	3V SPI Real-Time Clock Calendar with Battery Switchover

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Manufacturer	MAS [Micro Analog systems]

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 2012 Microchip Technology Inc.

Preliminary

DS22300A-page 1

MCP7952X/MCP7951X

Device Selection Table

Timekeeping Features:

• Real-Time Clock/Calendar:

- Hours, Minutes, Seconds, Hundredth of

Seconds, Day of Week, Month, Year, Leap

Year

• Crystal Oscillator requires External 32,768 kHz

Tuning Fork Crystal and Load Capacitors.

• Clock Out Function:

- 1Hz, 4.096 kHz, 8.192 kHz, 32.768 kHz

• 2 Programmable Alarms

• Programmable open drain output – Alarm or

Interrupt

• On-Chip Digital Trimming/Calibration:

- +/- 255 PPM range in 1 PPM steps

• Power-Fail Time-Stamp @ Battery Switchover:

- Logs time when VCC fails and VCC is restored

Low-Power Features:

• Wide Operating Voltage:

-VCC: 1.8V to 3.6V

-VBAT: 1.3V to 3.6V

• Low Operating Current:

-VCC Standby Current < 1uA @ 3V

-VBAT Timekeeping Current: <700nA @ 1.8V

• Automatic Battery Switchover from VCC to VBAT:

- Backup power for timekeeping and SRAM

retention

User Memory:

• 64-Byte Battery-Backed SRAM

• 2 Kbit and 1 Kbit EEPROM Memory:

- Software block write-protect (¼, ½, or entire

array)

- Write Page mode (up to 8 bytes)

- Endurance: 1M erase/write cycles

• 128-Bit Unique ID in Protected Area of EEPROM:

- Available blank or preprogrammed

- EUI-48™ or EUI-64™ MAC address

- Unlock sequence for user programming

Operating Ranges:

• SPI Clock Speed up to 5 MHz

• Operating Temperature Ranges:

- Industrial (I Temp): -40°C to +85°C.

• Packages include 10-Lead MSOP and TDFN

Package Types (not to scale)

Part Number

SRAM

(Bytes)

EEPROM

(Kbits)

Unique ID

MCP79520

64

2

Blank

MCP79510

64

1

Blank

MCP79521

64

2

EUI-48™

MCP79511

64

1

EUI-48™

MCP79522

64

2

EUI-64™

MCP79512

64

1

EUI-64™

X1

X2

VBAT

Vcc

MFP

1

2

3

4

MSOP/TDFN

CS

VSS

SCK

SO

SI

5

6

7

10

9

8

Note:

MCP795XX is used in this document as a

generic part number for the MCP7951X,

MCP7952X devices.

3V SPI Real-Time Clock Calendar with Battery Switchover

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Micro Analog systems	CM200S-32.768KDZB-UT	969Kb / 54P	SPI Real-Time Clock Calendar

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CM200S-32.768KDZB-UT Datasheet(PDF) 1 Page - Micro Analog systems

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