PCF8523 Datasheet PDF learn more.
Part number : PCF8523
Functions : This is a kind of semiconductor, Real-Time Clock (RTC) and calendar.
Pin arrangement :
Package information :
Manufacturer : NXP
The texts in the PDF file :
PCF8523 Real-Time Clock (RTC) and calendar Rev. 3 — 30 March 2011 Product data sheet 1. General description The PCF8523 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. Data is transferred serially via an I2C-bus with a maximum data rate of 1000 kbit/s. Alarm and timer functions are available with the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine-tuning of the clock. The PCF8523 has a backup battery switch-over circuit, which detects power failures and automatically switches to the battery supply when a power failure occurs. 2.
and benefits Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal Resolution: seconds to years Clock operating voltage: 1.0 V to 5.5 V Low backup current: typical 150 nA at VDD = 3.0 V and Tamb = 25 C 2 line bidirectional 1 MHz Fast-mode Plus (Fm+) I2C interface Battery backup input pin and switch-over circuit Freely programmable timer and alarm with interrupt capability Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF Internal Power-On Reset (POR) Open-drain interrupt or clock output pins Programmable offset register for frequency adjustment 3. Applications Time keeping application Battery powered devices Metering 1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19. NXP Semiconductors PCF8523 Real-Time Clock (RTC) and calendar 4. Ordering information Table 1. Ordering information Package Name PCF8523T/1 PCF8523TS/1 PCF8523TK/1 SO8 TSSOP14 HVSON8
plastic small outline package; 8 leads; body width 3.9 mm Version SOT96-1 Type number plastic thin shrink small outline package; 14 leads; SOT402-1 body width 4.4 mm plastic thermal enhanced very thin small outline package; no leads; 8 terminals; body 4 4 0.85 mm SOT909-1 PCF8523U/12AA/1  PCF [ … ]
PCF8523 PDF File