PCF85263ATT Datasheet PDF - NXP Semiconductors
| Part Number | PCF85263ATT | |
| Description | Tiny Real-Time Clock/calendar | |
| Manufacturers | NXP Semiconductors | |
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PCF85263A
Tiny Real-Time Clock/calendar with alarm function, battery
switch-over, time stamp input, and I2C-bus
Rev. 2 — 10 July 2014
Product data sheet
1. General description
The PCF85263A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low
power consumption and with automatic switching to battery on main power loss. The RTC
can also be configured as a stop-watch (elapsed time counter). Three time log registers
triggered from battery switch-over as well as input driven events. Featuring clock output
and two independent interrupt signals, two alarms, I2C interface and quartz crystal
calibration.
For a selection of NXP Real-Time Clocks, see Table 72 on page 90
2. Features and benefits
UL Recognized Component
Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds
based on a 32.768 kHz quartz crystal
Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
Two independent alarms
Battery back-up circuit
WatchDog timer
Three timestamp registers
Two independent interrupt generators plus predefined interrupts at every second,
minute, or hour
Frequency adjustment via programmable offset register
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.28 A at VDD = 3.0 V and Tamb = 25 C
400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz,
8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, and
CL = 12.5 pF
3. Applications
Printers and copiers
Electronic metering
Digital cameras
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 24.
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NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I2C-bus
26&,
26&2
9%$7
76 &/.,17%
966
3&)$77
9''
,17$ &/.
&/.
6&/
6'$
For mechanical details, see Figure 47 on page 82.
Fig 5. Pin configuration for PCF85263ATT1 (TSSOP10)
DDD
PCF85263A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 July 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PCF85263ATT.PDF Datasheet ] | |
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