Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

PCF8563 Datasheet(PDF) 11 Page - NXP Semiconductors

Part # PCF8563
Description  Real-time clock/calendar
Download  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8563 Datasheet(HTML) 11 Page - NXP Semiconductors

Back Button PCF8563 Datasheet HTML 7Page - NXP Semiconductors PCF8563 Datasheet HTML 8Page - NXP Semiconductors PCF8563 Datasheet HTML 9Page - NXP Semiconductors PCF8563 Datasheet HTML 10Page - NXP Semiconductors PCF8563 Datasheet HTML 11Page - NXP Semiconductors PCF8563 Datasheet HTML 12Page - NXP Semiconductors PCF8563 Datasheet HTML 13Page - NXP Semiconductors PCF8563 Datasheet HTML 14Page - NXP Semiconductors PCF8563 Datasheet HTML 15Page - NXP Semiconductors Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 32 page
background image
PCF8563_6
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 21 February 2008
11 of 32
NXP Semiconductors
PCF8563
Real-time clock/calendar
7.7 EXT_CLK test mode
A Test mode is available which allows for on-board testing. In such a mode it is possible to
set up test conditions and control the operation of the RTC.
The Test mode is entered by setting bit TEST1 in control_status_1 register. Then
pin CLKOUT becomes an input. The Test mode replaces the internal 64 Hz signal with the
signal applied to pin CLKOUT. Every 64 positive edges applied to pin CLKOUT will then
generate an increment of one second.
The signal applied to pin CLKOUT should have a minimum pulse width of 300 ns and a
minimum period of 1000 ns. The internal 64 Hz clock, now sourced from CLKOUT, is
divided down to 1 Hz by a 26 divide chain called a pre-scaler. The pre-scaler can be set
into a known state by using bit STOP. When bit STOP is set, the pre-scaler is reset to 0
(STOP must be cleared before the pre-scaler can operate again).
From a STOP condition, the first 1 second increment will take place after 32 positive
edges on CLKOUT. Thereafter, every 64 positive edges will cause a one-second
increment.
Remark: Entry into EXT_CLK test mode is not synchronized to the internal 64 Hz clock.
When entering the Test mode, no assumption as to the state of the pre-scaler can be
made.
Table 22.
Timer_control - Timer control register (address 0Eh) bit description
Bit
Symbol
Value
Description
7
TE
0
timer is disabled
1
timer is enabled
6 to 2
x
not relevant
1 to 0
TD[1:0]
see Table 23
timer source clock frequency select; these bits
determine the source clock for the countdown
timer; when not in use, TD[1:0] should be set
to 11 (1
60 Hz) for power saving
Table 23.
TD1 and TD0: Timer frequency selection
TD1
TD0
TIMER Source clock frequency
0
0
4096 Hz
0
1
64 Hz
10
1 Hz
11
1
60 Hz
Table 24.
Timer - Timer value register (address 0Fh) bit description
Bit
Symbol
Value
Description
7 to 0
TIMER
00h to FFh
countdown value = n;
CountdownPeriod
n
SourceClockFrequency
---------------------------------------------------------------
=


Similar Part No. - PCF8563

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
PCF8563 PHILIPS-PCF8563 Datasheet
692Kb / 30P
   Real-time clock/calendar
16 April 1999
PCF8563 NXP-PCF8563 Datasheet
466Kb / 45P
   Real-time clock/calendar
Rev. 9-16 June 2011
logo
Tiger Electronic Co.,Lt...
PCF8563 TGS-PCF8563 Datasheet
2Mb / 23P
   Real-time Clock/Calendar
logo
NXP Semiconductors
PCF8563 NXP-PCF8563 Datasheet
727Kb / 8P
   Smart, simple solutions for the 12 most common design concerns
August 2011
PCF8563 NXP-PCF8563 Datasheet
492Kb / 50P
   Real-time clock/calendar
Rev. 10-3 April 2012
More results

Similar Description - PCF8563

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
PCF8563 NXP-PCF8563_11 Datasheet
466Kb / 45P
   Real-time clock/calendar
Rev. 9-16 June 2011
PCF8563TF4.118 NXP-PCF8563TF4.118 Datasheet
492Kb / 50P
   Real-time clock/calendar
Rev. 10-3 April 2012
PCF8563 PHILIPS-PCF8563 Datasheet
692Kb / 30P
   Real-time clock/calendar
16 April 1999
logo
Xicor Inc.
X1205 XICOR-X1205 Datasheet
407Kb / 22P
   Real Time Clock/Calendar
logo
NXP Semiconductors
PCA8565 NXP-PCA8565 Datasheet
813Kb / 39P
   Real time clock/calendar
Rev. 02-16 June 2009
logo
OKI electronic componet...
MSM58321 OKI-MSM58321 Datasheet
121Kb / 16P
   REAL TIME CLOCK/CALENDAR
logo
Tiger Electronic Co.,Lt...
PCF8563 TGS-PCF8563 Datasheet
2Mb / 23P
   Real-time Clock/Calendar
logo
NXP Semiconductors
PCF8563TS-T NXP-PCF8563TS-T Datasheet
492Kb / 50P
   Real-time clock/calendar
Rev. 10-3 April 2012
PCA2125 NXP-PCA2125_08 Datasheet
189Kb / 36P
   SPI Real-time clock/calendar
Rev. 01-28 July 2008
PCF8564A NXP-PCF8564A_10 Datasheet
1Mb / 45P
   Real time clock and calendar
Rev. 02-30 September 2010
More results


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


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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