数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

PCF8564A 数据表(PDF) 19 Page - NXP Semiconductors

部件名 PCF8564A
功能描述  Real time clock and calendar
PDF  44 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF8564A 数据表(HTML) 19 Page - NXP Semiconductors

Back Button PCF8564A Datasheet HTML 15Page - NXP Semiconductors PCF8564A Datasheet HTML 16Page - NXP Semiconductors PCF8564A Datasheet HTML 17Page - NXP Semiconductors PCF8564A Datasheet HTML 18Page - NXP Semiconductors PCF8564A Datasheet HTML 19Page - NXP Semiconductors PCF8564A Datasheet HTML 20Page - NXP Semiconductors PCF8564A Datasheet HTML 21Page - NXP Semiconductors PCF8564A Datasheet HTML 22Page - NXP Semiconductors PCF8564A Datasheet HTML 23Page - NXP Semiconductors Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 44 page
background image
PCF8564A_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 1 — 8 October 2009
19 of 44
NXP Semiconductors
PCF8564A
Real time clock and calendar
[1]
F0 is clocked at 32.768 kHz.
The first increment of the time circuits is between 0.507813 s and 0.507935 s after STOP
bit is released. The uncertainty is caused by the prescaler bits F0 and F1 not being reset
(see Table 26) and the unknown state of the 32 kHz clock.
8.11 Reset
The PCF8564A includes an internal reset circuit which is active whenever the oscillator is
stopped. In the reset state the I2C-bus logic is initialized including the address pointer and
all registers are set according to Table 27. I2C-bus communication is not possible during
reset.
Table 26.
First increment of time circuits after STOP bit release
Bit
Prescaler bits
[1]
1 Hz tick
Time
Comment
STOP
F0F1-F2 to F14
hh:mm:ss
Clock is running normally
0
01-0 0001 1101 0100
12:45:12
prescaler counting normally
STOP bit is activated by user. F0F1 are not reset and values cannot be predicted externally
1
XX-0 0000 0000 0000
12:45:12
prescaler is reset; time circuits are frozen
New time is set by user
1
XX-0 0000 0000 0000
08:00:00
prescaler is reset; time circuits are frozen
STOP bit is released by user
0
XX-0 0000 0000 0000
08:00:00
prescaler is now running
XX-1 0000 0000 0000
08:00:00
-
XX-0 1000 0000 0000
08:00:00
-
XX-1 1000 0000 0000
08:00:00
-
:
::
11-1 1111 1111 1110
08:00:00
-
00-0 0000 0000 0001
08:00:01
0 to 1 transition of F14 increments the time circuits
10-0 0000 0000 0001
08:00:01
-
:
::
11-1 1111 1111 1111
08:00:01
-
00-0 0000 0000 0000
08:00:01
-
10-0 0000 0000 0000
08:00:01
-
:
:-
11-1 1111 1111 1110
08:00:01
-
00-0 0000 0000 0001
08:00:02
0 to 1 transition of F14 increments the time circuits
013aaa076



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com