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PCF2123
Datasheet
PCF2123
(Product Specification)
19-Nov-08, 0 pages, 241 kB
General description
The PCF2123 is a CMOS real time clock and calendar optimized for low power applications. Data is transferred serially via a Serial Peripheral Interface bus (SPI-bus) with a maximum data rate of 6.25 Mbit/s. An alarm and timer function is also available providing the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock.
Features
- Real time clock provides year, month, day, weekday, hours, minutes and seconds based on a 32.768 kHz quartz crystal
- Low backup current while running: typical 100 nA at VDD = 2.0 V and Tamb = 25 Cel
- Resolution: seconds to years
- Watchdog functionality
- Freely programmable timer and alarm with interrupt capability
- Clock operating voltage: 1.1 V to 5.5 V
- 3 line SPI-bus with separate combinable data input and output
- Serial interface at VDD = 1.6 V to 5.5 V
- 1 second or 1 minute interrupt output
- Integrated oscillator load capacitors for CL = 7 pF
- Internal power-on reset
- Open-drain interrupt and clock output pins
- Programmable offset register for frequency adjustment
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| PCF2123BS/1 | PCF2123BS/1,112 | 9352 863 82112 | Volume production | SOT758-1
(HVQFN16) | Tube | Standard Marking | |
| PCF2123BS/1 | PCF2123BS/1,118 | 9352 863 82118 | Volume production | SOT758-1
(HVQFN16) | Reel Pack, SMD, 13" | Standard Marking | |
| PCF2123BS/1 | PCF2123BS/1,512 | 9352 863 82512 | Volume production | SOT758-1
(HVQFN16) | Tube Dry Pack | Standard Marking | |
| PCF2123BS/1 | PCF2123BS/1,518 | 9352 863 82518 | Volume production | SOT758-1
(HVQFN16) | Reel Dry Pack, SMD, 13" | Standard Marking | |
| PCF2123TS/1 | PCF2123TS/1,112 | 9352 863 84112 | Volume production | SOT402-1
(TSSOP14) | Tube | Standard Marking | |
| PCF2123TS/1 | PCF2123TS/1,118 | 9352 863 84118 | Volume production | SOT402-1
(TSSOP14) | Reel Pack, SMD, 13" | Standard Marking | |
| PCF2123U/10AA/1 | PCF2123U/10AA/1,00 | 9352 875 42005 | Volume production | Uncased die | Chips on Wafer, Pre-Sawn, On FFC | No Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| PCF2123BS/1 | PCF2123BS/1,112 | PCF2123BS_1 |
| Always Pb-free | ||||
| PCF2123BS/1 | PCF2123BS/1,118 | PCF2123BS_1 |
| Always Pb-free | ||||
| PCF2123BS/1 | PCF2123BS/1,512 | PCF2123BS_1 |
| Always Pb-free | ||||
| PCF2123BS/1 | PCF2123BS/1,518 | PCF2123BS_1 |
| Always Pb-free | ||||
| PCF2123TS/1 | PCF2123TS/1,112 | PCF2123TS_1 |
| Always Pb-free | ||||
| PCF2123TS/1 | PCF2123TS/1,118 | PCF2123TS_1 |
| Always Pb-free | ||||
| PCF2123U/10AA/1 | PCF2123U/10AA/1,00 | PCF2123U_10AA_1 |
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| PCF2123BS/1 | 9352 863 82112 | PCF2123BS/1,112 | not available | |||||||
| PCF2123BS/1 | 9352 863 82118 | PCF2123BS/1,118 | not available | |||||||
| PCF2123BS/1 | 9352 863 82512 | PCF2123BS/1,512 | not available | |||||||
| PCF2123BS/1 | 9352 863 82518 | PCF2123BS/1,518 | Order samples | |||||||
| PCF2123TS/1 | 9352 863 84112 | PCF2123TS/1,112 | NA | ARROW ELECTRONICS | 2,144 | 11/19/2009 | Buy online | not available | ||
| NA | FUTURE ELECTRONICS | 178 | 11/19/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 4,712 | 11/19/2009 | Buy online | ||||||
| PCF2123TS/1 | 9352 863 84118 | PCF2123TS/1,118 | NA | MOUSER ELECTRONICS | 2,500 | 11/20/2009 | Buy online | not available | ||
| NA | ARROW ELECTRONICS | 2,144 | 11/19/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 2,356 | 11/19/2009 | Buy online | ||||||
| NA | DIGI-KEY CORPORATION | 2,814 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 2,500 | 11/20/2009 | Buy online | ||||||
| NA | FUTURE ELECTRONICS | 95 | 11/19/2009 | Buy online | ||||||
| NA | ARROW ELECTRONICS | 5,000 | 11/19/2009 | Buy online | ||||||
| PCF2123U/10AA/1 | 9352 875 42005 | PCF2123U/10AA/1,00 | not available |
Applications
- Time keeping application
- Battery powered devices
- Metering
- High duration timers
- Daily alarms
- Low standby power applications
Design support
Support Documents