PCF8583BS-T NXP Semiconductors, PCF8583BS-T Datasheet - Page 30

• Manufacturer Part Number: PCF8583BS-T
• Description: Real Time Clock CLOCK CALENDAR W 256X8SRAM I2C
• Manufacturer: NXP Semiconductors

Specifications of PCF8583BS-T

• Time Format: HH:MM:SS:hh
• Bus Type: Serial (2-Wire, I2C)
• Operating Supply Voltage (typ): 3.3/5V
• Package Type: PDIP
• Operating Supply Voltage (max): 6V
• Operating Supply Voltage (min): 2.5V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Through Hole
• Date Format: DW:DM:M:Y
• Function: Clock, Calendar, Alarm, Timer Interrupt
• Rtc Memory Size: 240 B
• Supply Voltage (max): 6 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Package / Case: HVQFN EP
• Lead Free Status / RoHS Status: Compliant
• Other names: PCF8583BS,518

NXP Semiconductors
PCF8583
Product data sheet
13.4 Reflow soldering
Key characteristics in reflow soldering are:
Table 9.
Table 10.
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)
< 2.5
≥ 2.5
Package thickness (mm)
< 1.6
1.6 to 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 9
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.
10
27.
Rev. 06 — 6 October 2010
Package reflow temperature (°C)
Volume (mm
< 350
235
220
Package reflow temperature (°C)
Volume (mm
< 350
260
260
250
3
3
)
)
Figure
Clock and calendar with 240 x 8-bit RAM
350 to 2000
260
250
245
27) than a SnPb process, thus
≥ 350
220
220
245
> 2000
260
245
PCF8583
© NXP B.V. 2010. All rights reserved.
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