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PCF8564A 数据表(PDF) 5 Page - NXP Semiconductors

部件名 PCF8564A
功能描述  Tiny Real-Time Clock/calendar with alarm function and I2C-bus
PDF  65 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF8564A 数据表(HTML) 5 Page - NXP Semiconductors

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PCF85063A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 7 — 30 March 2018
5 of 65
NXP Semiconductors
PCF85063A
Tiny Real-Time Clock/calendar with alarm function and I2C-bus
7.2 Pin description
[1]
The die paddle (exposed pad) is connected to VSS through high ohmic (non-conductive) silicon attach and should be electrically
isolated. It is good engineering practice to solder the exposed pad to an electrically isolated PCB copper pad as shown in Figure 37
“Footprint information for reflow soldering of SOT1197-1 (DFN2626-10) of PCF85063ATL” for better heat transfer but it is not required
as the RTC doesn’t consume much power. In no case should traces be run under the package exposed pad.
[2]
NXP recommends tying VDD of the device and VDD of all the external pull-up resistors to the same Power Supply.
Table 4.
Pin description
Input or input/output pins must always be at a defined level (VSS or VDD) unless otherwise specified.
Symbol
Pin
Type
Description
PCF85063AT
PCF85063ATL
PCF85063ATT
OSCI
1
1
1
input
oscillator input
OSCO
2
2
2
output
oscillator output
CLKOE[2]
-
3
-
input
CLKOUT enable or disable pin; enable is
active HIGH
INT[2]
3
4
3
output
interrupt output (open-drain)
VSS
4
5[1]
4
supply
ground supply voltage
SDA[2]
5
6
5
input/output
serial data line
SCL[2]
6
7
6
input
serial clock input
n.c.
-
8
-
-
not connected
CLKOUT
7
9
7
output
clock output (push-pull)
VDD
8
10
8
supply
supply voltage



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