PCF8593P,112 NXP Semiconductors, PCF8593P,112 Datasheet - Page 23

• Manufacturer Part Number: PCF8593P,112
• Description: IC CLOCK/CALENDAR LOW PWR 8-DIP
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/NVSRAMr

Specifications of PCF8593P,112

• Package / Case: 8-DIP (0.300", 7.62mm)
• Time Format: HH:MM:SS:hh (12/24 hr)
• Date Format: YY-MM-DD-dd
• Memory Size: 8B
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Function: Clock/Calendar/Alarm/Timer Interrupt
• Rtc Memory Size: 8 Byte
• Supply Voltage (max): 6 V
• Supply Voltage (min): 1 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Serial (I2C)
• Bus Type: Serial (I2C)
• User Ram: 8Byte
• Package Type: PDIP
• Operating Supply Voltage (max): 6V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-1089-5; 935151750112; PCF8593N

NXP Semiconductors
11. Application information
PCF8593
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 Oscillator frequency adjustment
By evaluating the average capacitance necessary for the application layout a fixed
capacitor can be used. The frequency is best measured via the 1 Hz signal which can be
programmed to occur at the interrupt output (pin 7). The frequency tolerance depends on
the quartz crystal tolerance, the capacitor tolerance and the device-to-device tolerance
(on average ±5 × 10
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
Apply RESET.
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.
−
6). Average deviations of ±5 minutes per year can be achieved.
Rev. 04 — 6 October 2010
2
C-bus) a signal faster than the 1 Hz is generated at the
Low power clock and calendar
PCF8593
© NXP B.V. 2010. All rights reserved.
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