NXP Semiconductors UM10301 PCF2123 - Manual (Page 7)

NXP Semiconductors
UM10301
User Manual PCF85x3, PCA8565 and PCF2123, PCA2125
UM10301_1 © NXP B.V. 2008. All rights reserved.
User manual Rev. 01 — 23 December 2008 7 of 52
Table 2. Comparison of six real time clocks
PCx85x3 family PCx212x family Features
PCF8563 PCA8565 PCF8583 PCF8593 PCF2123 PCA2125
Unique features Very low
power
consumption AEC-Q100
automotive
qualification High
resolution,
RAM, event
counter High
resolution,
event
counter Extremely
low power
consumption,
electronic
tuning AEC-Q100
automotive
qualification
Type of interface I
2
C I
2
C I
2
C I
2
C SPI SPI
Interface bus speed 400 kHz 400 kHz 100 kHz 100 kHz 7 MHz 7 MHz
Scratch pad RAM no no 240 bytes no no no
Year / leap year tracking yes / yes yes / yes yes / yes yes / yes yes / yes yes / yes
Year counter 2 digit +
1 century bit
2 digit +
1 century bit
2 bit
(4 years)
2 bit
(4 years)
2 digit
(99 years)
2 digit
(99 years)
100 ms, 10 ms time register no no yes yes no no
Electronic tuning register no no no no yes no
Programmable alarm and timer
functions yes yes yes yes yes yes
Low voltage detector yes yes no no yes no
Event counter mode no no yes yes no no
Option to select between two I
2
C
addresses
no no yes no no no
Integrated oscillator capacitor 1 at OSCO 1 at OSCO 1 at OSCO 1 at OSCO 2 1 at OSCO
Supply voltage range 1.8 V – 5.5 V 1.8 V – 5.5 V 2.5 V – 6.0 V 2.5 V – 6.0 V 1.6 V – 5.5 V 1.6 V – 5.5 V
Clock operating voltage 1.0 V – 5.5 V 1.8 V – 5.5 V 1.0 V – 6.0 V 1.0 V – 6.0 V 1.1 V – 5.5 V 1.3 V – 5.5 V
Typical current consumption 250 nA at
V
DD
= 1 V
650 nA at
V
DD
= 3 V
2 μA at
V
DD
= 1 V
1 μA at
V
DD
= 2 V
100 nA at
V
DD
= 2 V
550 nA at
V
DD
= 3 V
Operating temperature range -40 °C to
+85 °C
-40 °C to
+125 °C
-40 °C to
+85 °C
-40 °C to
+85 °C
-40 °C to
+85 °C
-40 °C to
+125 °C
AEC-Q100 qualified no Yes
(TSSOP8) no no no yes
Packages U
[1]
, DIP8,
SO8,
TSSOP8,
HVSON10
TSSOP8,
HVSON10 U
[1]
, DIP8,
SO8,
HVQFN20
DIP8, SO8 U
[1]
,
HVQFN16,
TSSOP14
TSSOP14
[1] Naked die
Some derived versions are available such as PCF8563A and PCA8565A which include
two integrated oscillator capacitors and are also available as naked die.