PCF85263A
Tiny Real-Time Clock/calendar with alarm function, battery
switch-over, time stamp input, and I
2
C-bus
Rev. 4.1 — 27 November 2015
Product data sheet
1. General description
The PCF85263A is a CMOS
1
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, I
2
C 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 (PCF85263ATL)
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 V
DD
= 3.0 V and T
amb
= 25
C
400 kHz two-line I
2
C-bus interface (at V
DD
= 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: C
L
= 6 pF, C
L
= 7 pF, and
C
L
= 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.
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I
2
C-bus
White goods
Elapsed time counter
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
Package
Name
PCF85263AT
PCF85263ATL
SO8
DFN2626-10
Description
plastic small outline package; 8 leads;
body width 3.9 mm
plastic thermal enhanced extremely
thin small outline package; no leads;
10 terminals; body 2.6
2.6
0.5 mm
plastic thin shrink small outline
package; 8 leads; body width 3 mm
plastic thin shrink small outline
package; 10 leads; body width 3 mm
Version
SOT96-1
SOT1197-1
Type number
PCF85263ATT
PCF85263ATT1
TSSOP8
TSSOP10
SOT505-1
SOT552-1
4.1 Ordering options
Table 2.
Ordering options
Orderable part number Sales item
(12NC)
PCF85263AT/AJ
PCF85263ATL/AX
PCF85263ATT/AJ
PCF85263ATT1/AJ
935302207118
935302602115
935304459118
935304461118
Delivery form
tape and reel, 13 inch
tape and reel, 7 inch
tape and reel, 13 inch
tape and reel, 13 inch
IC
revision
1
1
1
1
Product type number
PCF85263AT/A
PCF85263ATL/A
PCF85263ATT/A
PCF85263ATT1/A
5. Marking
Table 3.
Marking codes
Marking code
85263A
263A
263A
263A
Product type number
PCF85263AT/A
PCF85263ATL/A
PCF85263ATT/A
PCF85263ATT1/A
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
2 of 100
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I
2
C-bus
6. Block diagram
(1) Not available on all package types.
Fig 1.
Block diagram of PCF85263A
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
3 of 100
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I
2
C-bus
7. Pinning information
7.1 Pinning
For mechanical details, see
Figure 44 on page 79.
Fig 2.
Pin configuration for PCF85263AT (SO8)
For mechanical details, see
Figure 45 on page 80.
Fig 3.
Pin configuration for PCF85263ATL (DFN2626-10)
For mechanical details, see
Figure 46 on page 81.
Fig 4.
Pin configuration for PCF85263ATT (TSSOP8)
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
4 of 100
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I
2
C-bus
For mechanical details, see
Figure 47 on page 82.
Fig 5.
Pin configuration for PCF85263ATT1 (TSSOP10)
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
5 of 100
stm32/stm8
京公网安备 11010802033920号
EEWORLD
