PCF8583T/5,518 NXP Semiconductors, PCF8583T/5,518 Datasheet - Page 24

• Manufacturer Part Number: PCF8583T/5,518
• Description: IC CLK/CALENDAR 240X8 RAM 8-SOIC
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/NVSRAMr

Specifications of PCF8583T/5,518

• Package / Case: 8-SOIC (7.5mm Width)
• Memory Size: 240B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-1085-2; 935276539518; PCF8583TD-T

NXP Semiconductors
11. Application information
PCF8583
Product data sheet
11.1.1 Method 1: Fixed OSCI capacitor
11.1.2 Method 2: OSCI trimmer
11.1.3 Method 3: Direct measurement
11.1 Quartz frequency adjustment
By evaluating the average capacitance necessary for the application layout, a fixed
capacitor can be used. The frequency is measured using the 1 Hz signal available after
power-on at the interrupt output (pin 7). The frequency tolerance depends on the quartz
crystal tolerance, the capacitor tolerance and the device-to-device tolerance. Average
deviations of ±5 minutes per year are possible.
Using the alarm function (via the I
interrupt output for fast setting of a trimmer.
Procedure:
Routine:
Direct measurement of oscillator output (allowing for test probe capacitance).
•
•
•
•
Power the device on
Initialize the device (alarm functions).
Set clock to time t and set alarm to time t + Δt
at time t + Δt (interrupt) repeat routine.
All information provided in this document is subject to legal disclaimers.
Rev. 06 — 6 October 2010
2
C-bus) a signal faster than the 1 Hz is generated at the
Clock and calendar with 240 x 8-bit RAM
PCF8583
© NXP B.V. 2010. All rights reserved.
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