PCA8565
Real time clock/calendar
Rev. 02 16 June 2009 Product data sheet
1. General description
1
The PCA8565 is a CMOS real time clock and calendar optimized for low power
consumption. A programmable clock output, interrupt output and voltage-low detector are
also provided. All address and data are transferred serially via a two-line bidirectional
2
I C-bus. Maximum bus speed is 400 kbit/s. The built-in word address register is
incremented automatically after each written or read data byte.
AEC-Q100 compliant (PCA8565TS) for automotive applications.
2. Features
n Provides year, month, day, weekday, hours, minutes and seconds based on a
32.768 kHz quartz crystal
n Century ag
n Clock operating voltage: 1.8 V to 5.5 V
n Extended operating temperature range: - 40 C to +125 C
n Low backup current; typical 0.65 A at V = 3.0 V and T =25 C
DD amb
2
n 400 kHz two-wire I C-bus interface (at V = 1.8 V to 5.5 V)
DD
n Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz and
1 Hz)
n Alarm and timer functions
n Internal power-on reset
2
n I C-bus slave address: read A3h and write A2h
n Open-drain interrupt pin
n One integrated oscillator capacitor
3. Applications
n Automotive
n Industrial
n Other applications that require a wide operating temperature range
1. The denition of the abbreviations and acronyms used in this data sheet can be found in Section 16.PCA8565
NXP Semiconductors
Real time clock/calendar
4. Ordering information
Table 1. Ordering information
Type number Package
Name Description Version
PCA8565TS TSSOP8 plastic thin shrink small outline package; 8 leads; SOT505-1
body width 3 mm
PCA8565BS HVSON10 plastic thermal enhanced very thin small outline SOT650-1
package; no leads; 10 terminals;
body 3 3 0.85 mm
5. Marking
Table 2. Marking codes
Type number Marking code
PCA8565TS 8565
PCA8565BS 8565S
PCA8565_2 NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 16 June 2009 2 of 39