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AB1815-T3 Datasheet(PDF) 7 Page - Abracon Corporation

Part # AB1815-T3
Description  Real-Time Clock with Power
Download  37 Pages
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Manufacturer  ABRACON [Abracon Corporation]
Direct Link  https://abracon.com
Logo ABRACON - Abracon Corporation

AB1815-T3 Datasheet(HTML) 7 Page - Abracon Corporation

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AB18X5 Real-Time Clock with Power
Management Family
Date of Issue: October 16, 2014
3.0 x 3.0 mm
Page 7 of 37
Abracon Drawing #453568
Revision: C
4. Package Pins
4.1 Pin Configuration and Connections
Figure 2 and Table 2 show the QFN-16 pin configurations for the AB18X5 parts. Pins labeled NC must be
left unconnected. The thermal pad, pin 17, on the QFN-16 packages must be connected to VSS.
Figure 2. Pin Configuration Diagram
Table 2: Pin Connections
Pin Name
Pin Type
Function
Pin Number
AB1805
AB1815
VSS
Power
Ground
9,17
17
VCC
Power
System power supply
13
13
XI
XT
Crystal input
16
16
XO
XT
Crystal output
15
15
AF
Output
Autocalibration filter
14
14
VBAT
Power
Battery power supply
5
5
SCL
Input
I2C or SPI interface clock
77
SDO
Output
SPI data output
6
SDI
Input
SPI data input
9
nCE
Input
SPI chip select
12
SDA
Input
I2C data input/output
6
EXTI
Input
External interrupt input
10
10
WDI
Input
Watchdog reset input
2
2
nEXTR
Input
External reset input
3
3
FOUT/nIRQ
Output
Int 1/function output
11
11
nIRQ2
Output
Int 2 output
4
4
CLKOUT/nIRQ3
Output
Int 3/clock output
8
8
nTIRQ
Output
Timer interrupt output
12
nRST
Output
Reset output
1
1
nRST
WDI
nEXTR
FOUT/nIRQ
EXTI
VSS
nTIRQ
1
nRST
WDI
nEXTR
FOUT/nIRQ
EXTI
SDI
nCE
1
PSW/nIRQ2
PSW/nIRQ2
AB1805
AB1815
VSS
PAD
VSS
PAD


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