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PCF85263ATL/A Datasheet(PDF) 8 Page - NXP Semiconductors

Part # PCF85263ATL/A
Description  Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
PDF  102 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85263ATL/A Datasheet(HTML) 8 Page - NXP Semiconductors

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NXP Semiconductors
PCF85263A
Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
PCF85263ATT1
PCF85263ATT1
1
OSCI
10 VDD
2
OSCO
9 INTA (CLK)
3
VBAT
8 CLK
4
TS (CLK/INTB)
7 SCL
5
VSS
6 SDA
aaa-009082
For mechanical details, see Figure 48.
Figure 5. Pin configuration for PCF85263ATT1 (TSSOP10)
aaa-032284
1
A
B
C
D
Transparent top view
2
3
PCF85263AUK
For mechanical details, see Figure 49.
Figure 6. Pin configuration for PCF85263AUK (WLCSP12)
6.2 Pin description
Table 3 provides detailed description of various pins on PCF85263A.
Input or input/output pins must always be at a defined level (VSS or VDD) unless otherwise specified.
Pin
Description
Symbol
PCF85263AT
(SO8)
PCF85263
ATL
(DFN2626-10)
PCF85263
ATT
(TSSOP8)
PCF85263
ATT1
(TSSOP10)
PCF85263AUK
(WLCSP12)
Type
Primary use
Secondary use
OSCI
1
1
1
1
A2
Input
Oscillator input
-
OSCO
2
2
2
2
A3
Output Oscillator output
-
VBAT
3
3
3
3
B3
Supply Battery backup
supply voltage [1]
-
Can be configured with TSPM[1:0] [2]
TS (CLK/INTB)
-
4
-
4
C3
Input/
output
Timestamp input
INTB and CLK
output (push-
pull); stop-watch
control
VSS
4
5 [3]
4
5
D2, D3
Supply Ground supply
voltage
-
SDA
5
6
5
6
D1
Input/
output
Serial data line
-
Table 3. Pin description
PCF85263A
All information provided in this document is subject to legal disclaimers.
© 2025 NXP B.V. All rights reserved.
Product data sheet
Rev. 5.4 — 12 December 2025
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