PCF2127AT/1 NXP [NXP Semiconductors], PCF2127AT/1 Datasheet - Page 80

• Manufacturer Part Number: PCF2127AT/1
• Description: Integrated RTC, TCXO and quartz crystal
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
9
9.1
9.1.1
9.2
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
10
11
12
12.1
12.2
13
13.1
13.2
14
15
16
17
18
19
20
20.1
20.2
20.3
20.4
21
22
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Internal circuitry. . . . . . . . . . . . . . . . . . . . . . . . 62
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 63
Static characteristics. . . . . . . . . . . . . . . . . . . . 64
Dynamic characteristics . . . . . . . . . . . . . . . . . 69
Application information. . . . . . . . . . . . . . . . . . 72
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 73
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 74
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 76
Legal information. . . . . . . . . . . . . . . . . . . . . . . 77
Contact information. . . . . . . . . . . . . . . . . . . . . 78
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
I
I
SPI-bus timing characteristics . . . . . . . . . . . . 69
I
SPI-bus interface . . . . . . . . . . . . . . . . . . . . . . 55
Data transmission . . . . . . . . . . . . . . . . . . . . . . 55
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
START and STOP conditions . . . . . . . . . . . . . 57
System configuration . . . . . . . . . . . . . . . . . . . 57
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 58
Current consumption characteristics, typical . 66
Frequency characteristics. . . . . . . . . . . . . . . . 68
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 77
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 78
2
2
2
C-bus interface. . . . . . . . . . . . . . . . . . . . . . . 57
C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 58
C interface timing characteristics . . . . . . . . . 71
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2010.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Integrated RTC, TCXO and quartz crystal
PCF2127A
Document identifier: PCF2127A_2
Date of release: 7 May 2010
All rights reserved.