Solutions Cubed serial real time clock RTC

Get	Type	Title	Description

	PDF	PWB_DS	Datasheet and communication protocol for the Pocket Watch B
	ZIP	AN150	Using PocketWatch B with Parallax BASIC Stamp™ IISX
	ZIP	AN151	Using PocketWatch B with Parallax BASIC Stamp™ II
	ZIP	AN152	Using PocketWatch B with Parallax BASIC Stamp™ P I
	ZIP	qBASIC_PWB	Quick BASIC example of interfacing to the Pocket Watch B


1 or 2 wire serial interface
four types of programmable alarms
5 pin SIP package
seconds, minutes, days, months, years
Y2K, leap year compliant


1 to 49 units	NA
50 to 99 units	$22
100 to 249 units	$20
250 to 499 units	$18
500 or more	call for pricing
Special order of 50+ units required, pricing TBD due to obsolescence.


The Pocket Watch B (PWB) is a serial real time clock module that operates at baud rates of 2400, 4800, and 9600. Data is sent/received at TTL levels in an 8N1 format. 16 separate commands allow the user to set/read time and configure the various available alarms. In addition to accurate time keeping, the Pocket Watch B contains four advanced timing features. These are the standard alarm output; a single shot alarm with an adjustable duration of up to 18 hours; an astable alarm with pulse lengths up to 4 minutes and repetition rates up to 4 hours; and an astable alarm with pulse lengths up to 4 hours and repetition rates of up to 10 days.