BQ3285ES
ActiveTexas Instruments
RTC IC WITH 242X8 NVSRAM ALARM WAKE-UP
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BQ3285ES
ActiveTexas Instruments
RTC IC WITH 242X8 NVSRAM ALARM WAKE-UP
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | BQ3285ES | BQ3285 Series |
|---|---|---|
| Current - Timekeeping (Max) [Max] | 300 µA | 300 µA |
| Features | Alarm, Daylight Savings, Square Wave Output, Leap Year, NVSRAM | Alarm, Daylight Savings, Square Wave Output, Leap Year, NVSRAM |
| Interface | Parallel | Parallel |
| Memory Size | 242 B | 114 - 242 B |
| Mounting Type | Surface Mount | Surface Mount, Through Hole |
| Operating Temperature [Max] | 70 ░C | 70 ░C |
| Operating Temperature [Min] | 0 °C | 0 °C |
| Package / Case | 24-SOIC | 24-SSOP, 24-DIP, 24-SOIC |
| Package / Case | - | 15.24 mm |
| Package / Case | - | 0.6 in |
| Package / Case [x] | 0.295 in | 0.295 in |
| Package / Case [y] | 7.5 mm | 7.5 mm |
| Supplier Device Package | 24-SOIC | 24-SSOP, 24-PDIP, 24-SOIC |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Type | Clock/Calendar | Clock/Calendar |
| Voltage - Supply [Max] | 5.5 V | 3.6 - 5.5 V |
| Voltage - Supply [Min] | 4.5 V | 2.7 - 4.5 V |
| Voltage - Supply, Battery | - | 4 V |
| Voltage - Supply, Battery | - | 2.4 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Texas Instruments | TUBE | 1 | $ 11.22 | |
| 100 | $ 9.15 | |||
| 250 | $ 7.19 | |||
| 1000 | $ 6.10 | |||
BQ3285 Series
IC RTC CLK/CALENDAR PAR 24SSOP
| Part | Type | Package / Case | Features | Supplier Device Package | Interface | Mounting Type | Memory Size | Time Format | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Supply [Max] | Voltage - Supply [Min] | Current - Timekeeping (Max) [Max] | Voltage - Supply, Battery [Max] | Voltage - Supply, Battery [Min] | Package / Case | Package / Case | Package / Case [y] | Package / Case [x] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ3285ESS | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | ||||||
Texas Instruments BQ3285LDSSTR | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, NVSRAM | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285EP | Clock/Calendar | 24-DIP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-PDIP | Parallel | Through Hole | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | 15.24 mm | 0.6 in | ||||
Texas Instruments BQ3285S-SB2TR | Clock/Calendar | 24-SOIC | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SOIC | Parallel | Surface Mount | 114 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 7.5 mm | 0.295 in | |||||
Texas Instruments BQ3285LFSS-A1TRG4 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285LDSSG4 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, NVSRAM | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285LDSSTRG4 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, NVSRAM | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285ESSTRG4 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | ||||||
Texas Instruments BQ3285P-SB2 | Clock/Calendar | 24-DIP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-PDIP | Parallel | Through Hole | 114 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 15.24 mm | 0.6 in | |||||
Texas Instruments BQ3285LDSS | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, NVSRAM | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285ES | Clock/Calendar | 24-SOIC | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SOIC | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | 7.5 mm | 0.295 in | ||||
Texas Instruments BQ3285LFSS-A1G4 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285P-SB2E3 | Clock/Calendar | 24-DIP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-PDIP | Parallel | Through Hole | 114 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 15.24 mm | 0.6 in | |||||
Texas Instruments BQ3285ESSTR | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | ||||||
Texas Instruments BQ3285S-SB2 | Clock/Calendar | 24-SOIC | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SOIC | Parallel | Surface Mount | 114 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 7.5 mm | 0.295 in | |||||
Texas Instruments BQ3285LFSS-A1 | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 2.7 V | 4 V | 2.4 V | |||||
Texas Instruments BQ3285ESTR | Clock/Calendar | 24-SOIC | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SOIC | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 300 µA | 7.5 mm | 0.295 in | ||||
Texas Instruments BQ3285LSS | Clock/Calendar | 24-SSOP | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SSOP | Parallel | Surface Mount | 242 B | HH:MM:SS (12/24 hr) | 3.6 V | 2.7 V | 4 V | 2.4 V | |||||||
Texas Instruments BQ3285S-SB2TRG4 | Clock/Calendar | 24-SOIC | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 24-SOIC | Parallel | Surface Mount | 114 B | HH:MM:SS (12/24 hr) | 70 ░C | 0 °C | 5.5 V | 4.5 V | 7.5 mm | 0.295 in |
Description
General part information
BQ3285 Series
The CMOS bq3285E/L is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. The bq3285L supports 3V systems. Other bq3285E/L features include three maskable interrupt sources, square-wave output, and 242 bytes of general nonvolatile storage.
A 32.768kHz output is available for sustaining power-management activities. Wake-up capability is provided by an alarm interrupt, which is active in battery-backup mode.
The bq3285E/L write-protects the clock, calendar, and storage registers during power failure. A backup battery then maintains data and operates the clock and calendar.
Documents
Technical documentation and resources