描述 Description

The 5X1503 is a series of small form factor programmable clock

generators intended for low-power, consumer, battery powered

applications, wearable and smart devices.

The device is a 1 PLL + DCO architecture design with one

embedded crystal. The device is OTP programmable, allowing for

up to 3 unique frequency outputs. The 5X1503 has built-in unique

features such as Proactive Power Saving (PPS) and a low power

DCO to support system date/time keeping clock at 32.768kHz.

Dynamic Frequency Control (DFC) supports dynamically changing

between four different PLL frequencies via external requests with

controlled frequency changes, reducing frequency overshoot and

undershoot (ORT). The 5X1503S device can also support a

spread clock for EMI reduction. For a description of terms and

their functions, see Glossary of Features.

An internal OTP memory allows the user to store up to four

independent configurations that can be loaded on power-up

without programming. It can then be reprogrammed again through

the I2

C interface.

The 5X1503 supports three LVCMOS type outputs. Two outputs

have programmable amplitude. A low-power 32.768kHz clock is

supported with only less than 1.5μA current consumption for

system RTC reference clock needs.

Typical Applications

? SmartDevice

? Handheld

? Wearable applications

? Portable Consumer applications

特性 Features

? Proactive Power Saving (PPS) features save power during the

end device power-down mode

? Dynamic Frequency Control (DFC) feature allows programming

up to 4 difference frequencies that switch dynamically

? Programmable output clock amplitude (1V, 1.1V, 1.2V and

1.8V) to support low swing clock requirement

? Dedicated 32kHz output with 6 clock amplitude options

(5X1503L)

? Integrated crystal; no external input source requirement

? Configurable through I2C or OTP programming

? Spread spectrum clock support (5X1503S)

? 1.8V operating supply voltage

? 2 × 2 mm 10-VFQFPN package