pcf2129a NXP Semiconductors, pcf2129a Datasheet - Page 44
pcf2129a
Manufacturer Part Number
pcf2129a
Description
Integrated Rtc, Tcxo And Quartz Crystal
Manufacturer
NXP Semiconductors
Datasheet
1.PCF2129A.pdf
(68 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
pcf2129aT
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
pcf2129aT/1
Manufacturer:
NXP
Quantity:
12 246
Part Number:
pcf2129aT/1,518
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
pcf2129aT/1Ј¬512
Manufacturer:
PH3
Quantity:
3 040
Part Number:
pcf2129aT/2,518
Manufacturer:
NXP/恩智浦
Quantity:
20 000
NXP Semiconductors
9. Interfaces
PCF2129A_1
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
V
BBS
001aaj706
DD
Rev. 01 — 13 January 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
SCL
V
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
BBS
V
001aaj707
DD
44 of 68