Overview

The GR5525 series comes in two package choices: QFN56 and QFN68. The specific configurations are listed below.

Table 1 Configuration of GR5525 series

GR5525 Series	GR5525RGNI	GR5525IGNI	GR5525IENI	GR5525I0NI
CPU	Cortex®-M4F	Cortex®-M4F	Cortex®-M4F	Cortex®-M4F
RAM	256 KB	256 KB	256 KB	256 KB
SiP Flash	1 MB	1 MB	512 KB	N/A
I/O Number	50	39	39	39
I/O Voltage	1.8 V–3.6 V	1.8 V–3.6 V	1.8 V–3.6 V	In line with Flash voltage
Package (mm)	QFN68 (7.0 x 7.0 x 0.85)	QFN56 (7.0 x 7.0 x 0.75)	QFN56 (7.0 x 7.0 x 0.75)	QFN56 (7.0 x 7.0 x 0.75)