MCP79510-I/MS
Real Time Clocks
Technical Specifications
| Type | Description |
|---|---|
| Operating Temp | -40°C ~ +85°C |
| Working Voltage V | 2.7 V |
| Features | Temperature compensation;InsideSRAM/NVRAM;Timestamp function;Locking and tamper-proof;Programmable clock output;ESD/Overvoltage protection;Alarm function;Power-off retention of registers |
| crystal oscillator | External |
| Type | Description |
|---|---|
| Alarm Output | Yes |
| Current - Supply | 1.2uA |
| Package / Case | MSOP-10 |
Product Introduction
The MCP795XX Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, hundredth of seconds, days, months, years and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP795XX supports SPI communications up to 5 MHz.
The MCP795XX is designed to operate using a 32.768 kHz tuning fork crystal with external crystal load capacitors. On-chip digital trimming can be used to adjust for frequency variance caused by crystal tolerance and temperature.
SRAM and timekeeping circuitry are powered from the backup supply when main power is lost, allowing the device to maintain accurate time and the SRAM contents. The times when the device switches over to the backup supply and when primary power returns are both logged by the power-fail timestamp.
The MCP795XX features 128 bits of EEPROM which is only writable after an unlock sequence, making it ideal for storing a unique ID or other critical information. The MCP795X1 and MCP795X2 are pre-programmed with EUI-48 and EUI-64 addresses, respectively. Custom programming is also available.
The MCP795XX has a shared pin for outputting a selectable frequency square wave or alarm signals.
Features
- Real-Time Clock/Calendar (RTCC): Hours, minutes, seconds, hundredth of seconds, day of week, date, month, year; Leap year compensated to 2399; 12/24-hour modes
- Oscillator for 32.768 kHz Crystals: Optimized for 6 - 9 pF crystals
- On-Chip Digital Trimming/Calibration: ±1 ppm resolution; ±259 ppm range
- Dual Programmable Alarms
- Clock Output Function with Selectable Frequency
- Power-Fail Timestamp: Time logged on switchover to and from Battery mode
- Wide Voltage Range: Operating voltage range of 1.8V to 3.6V; Backup voltage range of 1.3V to 3.6V
- Low Typical Timekeeping Current: Operating from VCC: 1.2 μA at 3.0V; Operating from VBAT: 1.0 μA at 3.0V
- Automatic Switchover to Battery Backup
- 64-Byte Battery-Backed SRAM
- 1 Kbit or 2 Kbit EEPROM: Software write-protect; Page write up to 8 bytes; Endurance: one million erase/write cycles
- 128-Bit Protected EEPROM Area: Robust write unlock sequence; EUI-48 MAC address (MCP795X1); EUI-64 MAC address (MCP795X2)
- SPI Serial Interface: SPI clock rate up to 5 MHz
- Temperature Range: Industrial (I): -40°C to +85°C
- 10-Lead MSOP and TDFN
Datasheet
Alternative Parts
Common MCP79510-I/MS alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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