It featured a 200 MHz Samsung S3C2410 ARM processor developed around the 32-bit ARM920T core that implements the ARMv4T architecture.

The Non-Volatile File System (NVFS), also known as NVRAM, ensured that data was never lost even if the battery was fully discharged.

[3] The Z22 can run most of the basic programs included in previous Palm PDAs including:[3] The Z22 came with a program called Addit [3] which allowed users to order software while offline, and then have it sent to the handheld at the next hotsync.

The four smaller buttons are at each corner of the writing area and have the following default functions: Clock (clock icon) brings up the Date and Time briefly, then reverts to the current program, Contrast (Circle icon: half black, half white) allows the user to adjust the contrast and brightness of the display, Keyboard (ABC Icon) brings up an on-screen keyboard that allowed the user to "type" using the stylus, Number Board (123 icon) brings up the keypad on-screen keyboard which is used in much the same way as the letters keyboard.

[3] In addition to HotSync the Palm also has a standard IR interface command called ‘Beam’.