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Zire 21

Zire 21

from Palm
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Overview & Features

Brand
Palm
Model
Zire 21
Released
2003 Oct
Manufacturer
Palm
General Extras
Passive stylus
Hardware Designer
Palm

Technical Specifications

Display

Pixel Size
0.31378 mm/pixel
Resolution
160x160
25600 pixels
Display Area
2520.5 square millimeter
Display Type
Monochrome STN LCD
display
Display Width
50.2 mm
Pixel Density
81 PPI
Display Height
50.2 mm
Display Diagonal
71 mm
Display Color Depth
4 bit/pixel
Display Illumination
ELP
Display Area Utilization
30.4%
Number of Display Scales
16
Scratch Resistant Screen
No
Horizontal Full Bezel Width
23.8 mm
Display Light Reflection Mode
reflective

Power Supply

Battery
Lithium-ion
built-in
1-cell

Sound Playing

Audio Output
No
Loudspeaker(s)
mono

Cellular Phone

Supported Cellular Bands
No

Audio Subsystem

Audio Channel(s)
mono

Sound Recording

Microphone(s)
No

Auxiliary Camera

Aux. Camera Image Sensor
No

Built-in Sensors

Built-in accelerometer
No

Operative Memory

RAM Type
SDRAM
RAM Capacity
8 MiB RAM
7.2 MiB user accessible RAM

Ingress Protection

Protection from liquids
Yes
Protection from solid materials
Yes

Control Peripherals

Directional Pad
Two-way (without action button)
-way
Touchscreen Type
Resistive touch sensing
screen
Touchscreen Simultaneous Touch Points
Single-touch

Graphical Subsystem

Graphical Controller
N/A

Non-volatile Memory

Non-volatile Memory Type
EPROM
Non-volatile Memory Capacity
4 MiB
Non-volatile Memory Interface
Yes

Physical Attributes

Mass
110 g
Depth
16 mm
Width
74 mm
Height
112 mm
Bounding Volume
132.6 ccm

Multimedia Broadcast

FM Radio Receiver
No

Satellite Navigation

Supported GPS protocol(s)
No

Software Environment

Platform
Palm OS
Operating System
PalmSource Palm OS 5.2
(5.2.1)

Audio/Video Interfaces

A/V Out
No

Auxiliary Camera No. 2

Aux. 2 Camera Image Sensor
No

Auxiliary Camera No. 3

Aux. 3 Camera Image Sensor
No

Auxiliary Camera No. 4

Aux. 4 Camera Focus
No
Aux. 4 Camera Image Sensor
No

Primary Camera System

Flash
No
Focus
No
Camera Image Sensor
No

Geographical Attributes

Market Countries
USA

Secondary Camera System

Secondary Camera Sensor
No

Communication Interfaces

IR
IrDA 1.2
115200bit/s (SIR/CIR)
USB
USB 1.1
USB Full-Speed (12 Mbps)
Bluetooth
No
Wireless LAN
No
USB Connector
USB Series Mini-B (mini-USB)
Expansion Interfaces
No

Secondary Cellular Phone

Sec. Supported Cellular Networks
No

Secondary Auxiliary Camera

Sec. Aux. Cam. Image Sensor
No

Application processor, Chipset

CPU
Texas Instruments OMAP 311, 2002, 32 bit, single-core, 16 Kbyte I-Cache, 8 Kbyte D-Cache
CPU Clock
126 MHz

Secondary Auxiliary Camera No. 2

Sec. Aux. 2 Cam. Image Sensor
No

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