PCF2123TS/1,112 NXP Semiconductors, PCF2123TS/1,112 Datasheet - Page 55
![IC SPI RTC/CALENDAR 14-TSSOP](/photos/6/58/65814/568-14-tssop_sot402-1_sml.jpg)
PCF2123TS/1,112
Manufacturer Part Number
PCF2123TS/1,112
Description
IC SPI RTC/CALENDAR 14-TSSOP
Manufacturer
NXP Semiconductors
Type
Clock/Calendar/Alarmr
Specifications of PCF2123TS/1,112
Package / Case
14-TSSOP
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
SPI, 3-Wire Serial
Voltage - Supply
1.1 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Function
Clock, Calendar
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.1 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
935286384112
PCF2123TS/1
PCF2123TS/1
PCF2123TS/1
PCF2123TS/1
NXP Semiconductors
PCF2123
Product data sheet
18.4 Reflow soldering
Key characteristics in reflow soldering are:
Table 50.
Table 51.
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see
Package thickness (mm)
Package thickness (mm)
< 1.6
1.6 to 2.5
> 2.5
< 2.5
2.5
•
•
•
Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see
reducing the process window
Solder paste printing issues including smearing, release, and adjusting the process
window for a mix of large and small components on one board
Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature) and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic). In addition, the peak temperature must be low enough that the
packages and/or boards are not damaged. The peak temperature of the package
depends on package thickness and volume and is classified in accordance with
Table 50
SnPb eutectic process (from J-STD-020C)
Lead-free process (from J-STD-020C)
and
Figure
All information provided in this document is subject to legal disclaimers.
51
Rev. 4 — 22 December 2010
39.
Package reflow temperature (C)
Volume (mm
< 350
235
220
Package reflow temperature (C)
Volume (mm
< 350
260
260
250
3
3
)
)
Figure
350 to 2000
260
250
245
39) than a SnPb process, thus
350
220
220
SPI Real time clock/calendar
245
> 2000
260
245
PCF2123
© NXP B.V. 2010. All rights reserved.
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