Nxp semiconductors – NXP Semiconductors UM10301 PCF2123 User 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.