R31DS0145EU0116 Rev. 1.16

Page 20

Sep 24, 2025

XK Datasheet

5. Package Outline Drawings

The package outline drawings are located at the end of this document and are accessible from the Renesas

website. The package information is the most current data available and is subject to change without revision of

this document.

6. Marking Diagram

The XK devices provide operating voltage, frequency group and date code information in the crystal top mark,

which is mounted on the top of the XK oscillator. Customer-specific configuration information is contained in a

factory-readable field stored in the part. The XK device may be configured with up to three frequencies from a

single group. Frequencies from different groups are not allowed in a single device.

Figure 21. Voltage and Frequency Group Codes and Marking Diagrams

2.5V or 3.3V

1.8V

Frequency

Group 1

S

Prefix

X

Voltage/

Frequency

Group Code

y

Year

Code

m

Month

Code

50

100

125

250

500

Frequency

Group 2

156.25

312.5

625

1250

Frequency

Group 3

161.1328125

322.265625

644.53125

Frequency

Group 4

122.88, 153.6

245.76, 307.2

491.52, 614.4

983.04

Frequency

Group 5

106.25

212.5

425

MHz