PCF8523TS-1 datasheet(8/66 Pages) NXP

Part #	PCF8523TS-1

Description	Real-Time Clock (RTC) and calendar

Download	66 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

Logo

8 / 66 page

PCF8523

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 30 March 2011

8 of 66

NXP Semiconductors

PCF8523

Real-Time Clock (RTC) and calendar

8.2 Control and status registers

8.2.1 Register Control_1

[1]

Default value.

[2]

Must always be written with logic 0.

[3]

For a software reset, 01011000 (58h) must be sent to register Control_1 (see Section 8.3). Bit SR will

always return 0 when read.

CLOCKOUT and timer registers

0Fh

Tmr_CLKOUT_ctrl

TAM

TBM

COF[2:0]

TAC[1:0]

TBC

10h

Tmr_A_freq_ctrl

-

TAQ[2:0]

11h

Tmr_A_reg

TIMER_A_VALUE[7:0]

12h

Tmr_B_freq_ctrl

-

TBW[2:0]

-

TBQ[2:0]

13h

Tmr_B_reg

TIMER_B_VALUE[7:0]

Table 4.

Registers overview …continued

Bit positions labeled as - are not implemented and will return a 0 when read. Bit T must always be written with logic 0.

Address Register name

Bit

7

6

5

4

3

2

1

0

Table 5.

Control_1 - control and status register 1 (address 00h) bit description

Bit

Symbol

Value

Description

7

CAP_SEL

internal oscillator capacitor selection for quartz

crystals with a corresponding load capacitance

0[1]

7pF

112.5 pF

6T

0[1][2]

unused

5STOP

0[1]

RTC time circuits running

1

RTC time circuits frozen;

RTC divider chain flip-flops are

asynchronously set logic 0;

CLKOUT at 32.768 kHz, 16.384 kHz, or

8.192 kHz is still available

4SR

0[1][3]

no software reset

1

initiate software reset

3

12_24

0[1]

24 hour mode is selected

1

12 hour mode is selected

2SIE

0[1]

second interrupt disabled

1

second interrupt enabled

1AIE

0[1]

alarm interrupt disabled

1

alarm interrupt enabled

0CIE

0[1]

no correction interrupt generated

1

interrupt pulses will be generated at every

correction cycle (see Section 8.8)

Similar Part No. - PCF8523TS-1

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCF8523TS	334Kb / 2P	Save power with small, ultra-efficient RTCs March 2011
	PCF8523TS	700Kb / 75P	Real-Time Clock (RTC) and calendar Rev. 4-5 July 2012
	PCF8523TS/1	700Kb / 75P	Real-Time Clock (RTC) and calendar Rev. 4-5 July 2012

More results

Similar Description - PCF8523TS-1

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCF8523	700Kb / 75P	Real-Time Clock (RTC) and calendar Rev. 4-5 July 2012
Intersil Corporation	X1205	331Kb / 22P	2-Wire RTC Real Time Clock/Calendar
Renesas Technology Corp	X1205	873Kb / 22P	2-Wire??RTC Real Time Clock/Calendar
NXP Semiconductors	PCF8564A	1Mb / 45P	Real time clock and calendar Rev. 02-30 September 2010
	PCF8564A_1308	386Kb / 48P	Real time clock and calendar Rev. 3-26 August 2013
	PCF8564A	924Kb / 44P	Real time clock and calendar Rev. 1-8 October 2009
	PCF8563	466Kb / 45P	Real-time clock/calendar Rev. 9-16 June 2011
	PCF8563TF4.118	492Kb / 50P	Real-time clock/calendar Rev. 10-3 April 2012
	PCF8563	692Kb / 30P	Real-time clock/calendar 16 April 1999
Xicor Inc.	X1205	407Kb / 22P	Real Time Clock/Calendar

More results

PCF8523TS-1 Datasheet(PDF) 8 Page - NXP Semiconductors

PCF8523TS-1 Datasheet(HTML) 8 Page - NXP Semiconductors

Similar Part No. - PCF8523TS-1

Similar Description - PCF8523TS-1

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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66

Datasheet Download

Link URL