MCP79510-IMS Datasheet, PDF (1/50 Pages) Microchip Technology – 3V SPI Real-Time Clock Calendar with Battery Switchover

MCP7952X/MCP7951X
3V SPI Real-Time Clock Calendar with Battery Switchover
Device Selection Table
Part Number
SRAM
(Bytes)
EEPROM
(Kbits)
Unique ID
MCP79520
64
MCP79510
64
MCP79521
64
MCP79511
64
MCP79522
64
MCP79512
64
2
Blank
1
Blank
2
EUI-48^™
1
EUI-48^™
2
EUI-64^™
1
EUI-64^™
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)
MSOP/TDFN
X1 1
X2 2
VBAT 3
CS 4
VSS 5
10 Vcc
9 MFP
8 SCK
7 SO
6 SI
Note:
MCP795XX is used in this document as a
generic part number for the MCP7951X,
MCP7952X devices.
 2012 Microchip Technology Inc.
Preliminary
DS22300A-page 1