¡ Semiconductor MSM6542-01/02/03 MSM6542-01/02/03.
MSM6542-01 - (MSM6542-01/-02/-03) REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT
MSM6542-02 - (MSM6542-01/-02/-03) REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT
MSM6542-03 - (MSM6542-01/-02/-03) REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT