PCF85363A: Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I²C-bus

Overview

The PCF85363A is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption and with automatic switching to battery on main power loss. The RTC can also be configured as a stop-watch (elapsed time counter). Three time log registers triggered from battery switch-over as well as input driven events. Featuring clock output and two independent interrupt signals, two alarms, I²C interface and quartz crystal calibration, 64 byte battery backed-up RAM.

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Features

UL Recognized Component (PCF85363ATL)
Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds based on a 32.768 kHz quartz crystal
Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
Two independent alarms
Battery back-up circuit
WatchDog timer
Three timestamp registers
Two independent interrupt generators plus predefined interrupts at every second, minute, or hour
64 byte battery backed-up RAM
Frequency adjustment via programmable offset register
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.28 μA at V_DD = 3.0 V and T_amb = 25 °C
400 kHz two-line I²C-bus interface (at V_DD = 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Configurable oscillator circuit for a wide variety of quartzes: C_L = 6 pF, C_L = 7 pF, and C_L = 12.5 pF

Target Applications

Elapsed time counter
Network powered devices
Printers and copiers
Battery backed up systems
Digital voice recorders
Data loggers
Mobile equipment
White goods
Digital cameras
Accurate high duration timer

MoreLess

Features

UL Recognized Component (PCF85363ATL)
Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds based on a 32.768 kHz quartz crystal
Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
Two independent alarms
Battery back-up circuit
WatchDog timer
Three timestamp registers
Two independent interrupt generators plus predefined interrupts at every second, minute, or hour
64 byte battery backed-up RAM
Frequency adjustment via programmable offset register
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.28 μA at V_DD = 3.0 V and T_amb = 25 °C
400 kHz two-line I²C-bus interface (at V_DD = 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Configurable oscillator circuit for a wide variety of quartzes: C_L = 6 pF, C_L = 7 pF, and C_L = 12.5 pF

Target Applications

Data Sheets

Development Boards

OM13514:PC evaluation board for the I²C-bus RTC PCF85363A

Development Boards

OM13514:PC evaluation board for the I²C-bus RTC PCF85363A

PCF85363A: Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I2C-bus

Overview

Features

Target Applications

Target Applications

Development Boards

Development Boards

PCF85363A: Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I²C-bus