PCF2129AT/1,512 NXP Semiconductors, PCF2129AT/1,512 Datasheet - Page 45

• Manufacturer Part Number: PCF2129AT/1,512
• Description: IC REAL TIME CLK/CALENDAR 20SOIC
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF2129AT/1,512

• Package / Case: 20-SOIC (7.5mm Width)
• Date Format: YY-MM-DD-dd
• Time Format: HH:MM:SS (12/24 hr)
• Interface: I²C, SPI
• Voltage - Supply: 1.8 V ~ 4.2 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Function: Clock, Alarm, Watchdog, Timestamp
• Supply Voltage (max): 4.2 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: I2C, SPI
• Supply Current: 800 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4960-5; 935288599512

NXP Semiconductors
9. Interfaces
PCF2129A_2
Product data sheet
Fig 26. Interface selection
a. SPI-bus interface selection
SDO
SCL
V
V
SDI
CE
DD
SS
To select the SPI-bus interface, pin IFS has to be
connected to pin V
SDA/CE
The PCF2129A has a selectable I
the interface selection pin IFS (see
Table 47.
Pin
IFS
SDO
SCL
V
SS
SDI
IFS
SS
.
1
2
3
4
5
6
7
8
9
10
PCF2129A
Connection
V
BBS
SS
Interface selection input pin IFS
20
19
18
17
16
15
14
13
12
11
All information provided in this document is subject to legal disclaimers.
V
BBS
001aaj706
DD
Rev. 02 — 7 May 2010
2
Bus interface
SPI-bus
I
C-bus or SPI-bus interface. The selection is done using
2
C-bus
Table
b. I
SDA
V
SCL
V
47).
DD
SS
To select the I
connected to pin BBS.
2
C-bus interface selection
Integrated RTC, TCXO and quartz crystal
R PU
2
C-bus interface pin IFS has to be
R PU
SDA/CE
SDO
SCL
V
SDI
IFS
SS
Reference
Section 9.1
Section 9.2
1
2
3
4
5
6
7
8
9
10
PCF2129A
PCF2129A
© NXP B.V. 2010. All rights reserved.
20
19
18
17
16
15
14
13
12
11
V
BBS
001aaj707
DD
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