PCF85263A WatchDog timer - NXP

1 PCF85263A . Tiny Real-Time Clock/calendar with alarm function, battery 2. switch-over, time stamp input, and I C-bus Rev. 22 September 2021 Product data sheet 1 General description 1. The PCF85263A is a CMOS 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 2. clock output and two independent interrupt signals, two alarms, I C-bus interface and quartz crystal calibration.

2 For a selection of NXP Real-Time Clocks, see Table 71. 2 Features and benefits UL Recognized Component (PCF85263 ATL). Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds based on a kHz quartz crystal Stop-watch mode for elapsed time counting. From 100th seconds to 999 999 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: V to V.

3 Low current; typical A at VDD = V and Tamb = 25 C. 2. 400 kHz two-line I C-bus interface (at VDD = V to V). Programmable clock output for peripheral devices ( kHz, kHz, kHz, kHz, kHz, kHz, and 1 Hz). Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, and CL = pF. Packages offered: SI8, TSSOP8, TSSOP10, HXSON10 and WLCSP12. 3 Applications Printers and copiers Electronic metering Digital cameras White goods Elapsed time counter 1 The definition of the abbreviations and acronyms used in this data sheet can be found in Section 23. NXP Semiconductors PCF85263A .

4 2. Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I C-bus Network powered devices Battery backed up systems Data loggers Digital voice recorders Mobile equipment Accurate high duration timer 4 Ordering information Table 1. Ordering information Type number Topside Package marking Name Description Version PCF85263AT/A 85263A SO8 plastic small outline package; 8 leads; body width mm SOT96-1. PCF85263 ATL/A 263A DFN2626-10 plastic thermal enhanced extremely thin small outline SOT1197-1. package; no leads; 10 terminals; body mm PCF85263 ATT/A 263A TSSOP8 plastic thin shrink small outline package; 8 leads; body width SOT505-1.

5 3 mm PCF85263 ATT1/A 263A TSSOP10 plastic thin shrink small outline package; 10 leads; body SOT552-1. width 3 mm PCF85263 AUK F WLCSP12 wafer level package 12 cu pillars; body x x SOT2035-1. mm with mm pitch Ordering options Table 2. Ordering options [1]. Type number Orderable part Package Packing method Minimum Temperature number order quantity PCF85263AT/A PCF85263AT/AJ SO8 Reel 13" Q1 NDP 2500 Tamb = -40 C to +85 C. PCF85263 ATL/A PCF85263 ATL/AX DFN2626-10 Reel 7" Q1 NDP 4000 Tamb = -40 C to +85 C. PCF85263 ATT/A PCF85263 ATT/AJ TSSOP8 Reel 13" Q1 NDP 2500 Tamb = -40 C to +85 C.

6 [2]. PCF85263 ATT1/A PCF85263 ATT1/AJ TSSOP10 Reel 13" Q1 NDP 2500 Tamb = -40 C to +85 C. PCF85263 ATT1/AZ TSSOP10 Reel 13" Q1 NDP 2500 Tamb = -40 C to +85 C. [3]. SSB. PCF85263 AUK PCF85263 AUKZ WLCSP12 Reel 13" Q1 Dry 20000 Tamb = -40 C to +85 C. Pack [1] Standard packing quantities and other packaging data are available at [2] Discontinuation Notice 202104010DN; drop in replacement is PCF85263 ATT1/AZ. Refer to PCN 202104008A. [3] This packing method uses a Static Shielding Bag (SSB) solution. Material should be kept in the sealed bag between uses. PCF85263A All information provided in this document is subject to legal disclaimers.

7 NXP 2021. All rights reserved. Product data sheet Rev. 22 September 2021. 2 / 92. NXP Semiconductors PCF85263A . 2. Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I C-bus 5 Block diagram 100TH seconds Alarm control 1 byte RAM. Seconds Minutes I2C interface SDA. Alarm 1 Alarm 2. SCL. RTC Stopwatch Hours Hours xxxx00. Weekdays Hours xx00xx Days Hours 00xxxx Time stamp 1 Time stamp 2 Time stamp 3. Months - Years - Time stamp control VDD(int) VSS. Mechanical switch detec. VDD batt_mode Stopwatch control VBAT/VTH VDD(int) VDD. VBAT.

8 Battery switch over TS (1). (CLK/INTB). batt_mode Alarms INTA. Time stamps (CLK). Pulse/ Periodic interrupt Pulse/. level Offset calibration level WatchDog Battery mode Interrupt Interrupt generation generation CLK (1). OSCI 32768 Hz CLK. quartz generation OSCO oscillator PCF85263A . Offset WatchDog calibration aaa-009062. 1. Not available on all package types. Figure 1. Block diagram of PCF85263A . PCF85263A All information provided in this document is subject to legal disclaimers. NXP 2021. All rights reserved. Product data sheet Rev. 22 September 2021. 3 / 92. NXP Semiconductors PCF85263A .

9 2. Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I C-bus 6 Pinning information Pinning PCF85263AT. OSCI 1 8 VDD. OSCO 2 7 INTA(CLK). VBAT 3 6 SCL. VSS 4 5 SDA. aaa-009079. For mechanical details, see Figure 45. Figure 2. Pin configuration for PCF85263AT (SO8). terminal 1. index area OSCI 1 10 VDD. OSCO 2 9 INTA (CLK). VBAT 3 PCF85263 ATL 8 CLK. TS (CLK/INTB) 4 7 SCL. VSS 5 6 SDA. aaa-009081. Transparent top view For mechanical details, see Figure 46. Figure 3. Pin configuration for PCF85263 ATL (DFN2626-10). OSCI 1 8 VDD. OSCO 2 7 INTA(CLK).

10 PCF85263 ATT. VBAT 3 6 SCL. VSS 4 5 SDA. aaa-011437. For mechanical details, see Figure 47. Figure 4. Pin configuration for PCF85263 ATT (TSSOP8). PCF85263A All information provided in this document is subject to legal disclaimers. NXP 2021. All rights reserved. Product data sheet Rev. 22 September 2021. 4 / 92. NXP Semiconductors PCF85263A . 2. Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I C-bus OSCI 1 10 VDD. OSCO 2 9 INTA (CLK). VBAT 3 PCF85263 ATT1 8 CLK. TS (CLK/INTB) 4 7 SCL. VSS 5 6 SDA. aaa-009082. For mechanical details, see Figure 48.