BQ32000 Series
Serial real-time clock (RTC) with battery backup and trickle charge
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Serial real-time clock (RTC) with battery backup and trickle charge
| Part | Type | Voltage - Supply [Max] | Voltage - Supply [Min] | Mounting Type | Current - Timekeeping (Max) | Features | Voltage - Supply, Battery [Min] | Voltage - Supply, Battery [Max] | Time Format | Supplier Device Package | Interface | Operating Temperature [Min] | Operating Temperature [Max] | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ32000DR | Clock/Calendar | 3.6 V | 3 V | Surface Mount | 100 µA | Leap Year, Square Wave Output, Trickle-Charger | 1.4 V | 3.6 V | HH:MM:SS (24 hr) | 8-SOIC | 2-Wire Serial, I2C | -40 °C | 85 °C | 3.9 mm | 8-SOIC |
Texas Instruments BQ32000D | Clock/Calendar | 3.6 V | 3 V | Surface Mount | 100 µA | Leap Year, Square Wave Output, Trickle-Charger | 1.4 V | 3.6 V | HH:MM:SS (24 hr) | 8-SOIC | 2-Wire Serial, I2C | -40 °C | 85 °C | 3.9 mm | 8-SOIC |
Key Features
• Automatic Switchover to Backup SupplyI2C Interface Supports Serial Clock up to 400 kHzUses 32.768-kHz Crystal With –63-ppm to+126-ppm AdjustmentIntegrated Oscillator-Fail Detection8-Pin SOIC Package–40°C to 85°C Ambient Operating TemperatureAutomatic Switchover to Backup SupplyI2C Interface Supports Serial Clock up to 400 kHzUses 32.768-kHz Crystal With –63-ppm to+126-ppm AdjustmentIntegrated Oscillator-Fail Detection8-Pin SOIC Package–40°C to 85°C Ambient Operating Temperature
Description
AI
The bq32000 device is a compatible replacement for industry standard real-time clocks.
The bq32000 features an automatic backup supply with integrated trickle charger. The backup supply can be implemented using a capacitor or non-rechargeable battery. The bq32000 has a programmable calibration adjustment from –63 ppm to +126 ppm. The bq32000 registers include an OF (oscillator fail) flag indicating the status of the RTC oscillator, as well as a STOP bit that allows the host processor to disable the oscillator. The time registers are normally updated once per second, and all the registers are updated at the same time to prevent a timekeeping glitch. The bq32000 includes automatic leap-year compensation.
The bq32000 device is a compatible replacement for industry standard real-time clocks.
The bq32000 features an automatic backup supply with integrated trickle charger. The backup supply can be implemented using a capacitor or non-rechargeable battery. The bq32000 has a programmable calibration adjustment from –63 ppm to +126 ppm. The bq32000 registers include an OF (oscillator fail) flag indicating the status of the RTC oscillator, as well as a STOP bit that allows the host processor to disable the oscillator. The time registers are normally updated once per second, and all the registers are updated at the same time to prevent a timekeeping glitch. The bq32000 includes automatic leap-year compensation.