Texas Instruments Avigo 10

Date of introduction:  September 16, 1997 Display technology:  LCD dot matrix
New price:  $299 Display size:  240 * 160 pixels
Size:  5.5" x 3.3" x 0.7"    
Weight:  6.5 ounces Serial No:  
Batteries:  2*AAA + CR2025 Date of manufacture:  mth 09 year 1997
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  17 Integrated circuits:  CPU: Inventec 6SI117
 Flash: AMD 29F080
 Display: Toshiba 6C23, Toshiba 6C24
Memories:  1024kB Flash-ROM 128kB RAM    
Program steps:   Courtesy of:  Joerg Woerner

AVIGO_BACK.jpg (415570 Byte)The Avigo 10 PDA (Personal Digital Assistent) introduced already in September 1997 uses a completly different approach compared to Texas Instruments' Personal Organizers, e.g. the PocketMate 300. Instead of a spacy keyboard the smaller Avigo 10 uses a bold, touch-sensitive display with a resolution of 160*240 dots. A nice feature, especially for tables, is the ability to rotate the data, viewing it "landscape" rather than "portrait".

Next to the display are several buttons including a rocker switch that scrolls windows and messages, a power switch and a button to illuminate the backlight. The Avigo offers the usual array of  PDA functions and has the capacity to upload applications. Using its stylus, users can navigate through four main applications:

To Do

Another set of buttons along the bottom of the screen offers access to the:

Expense Programm

A third set of programms is accessible from the general applications button:


AVIGO_T3.jpg (385677 Byte)AVIGO_KBD.jpg (383007 Byte)AVIGO_PEN.jpg (62307 Byte)Users of the Avigo 10 have two choices to enter their data with the stylus into the different applications:

A standard graphics keyboard.
The T9 keyboard from Tegic Communcations, known from most mobile phones
    with the typical three characters per key.

AVIGO_CRADLE.jpg (143375 Byte)The Avigo 10 is bundled with a customized version of the Lotus® Organizer™ 97, the leading personal information management software. It takes control of the calendar, address book, task list, and more. Also included is the IntelliSync™ software to synchronize the appointments, tasks, contacts, and more, directly with Lotus Organizer 97 on the desktop PC. Connectivity with a Personal Computer is accomplished through a Avigo 10 specific cradle supporting a RS-232 interface.

AVIGO_PCB2.jpg (465811 Byte)AVIGO_PCB1.jpg (531460 Byte)AVIGO_PCB.jpg (167517 Byte)Dismantling this Avigo 10 PDA manufactured in September 1997 by Inventec Corporation in Taiwan reveals a very complex, yet high integrated system based on an Application Specific Integrated Circuit (ASIC). The main electronics is compromised of two printed circuit boards (PCB's), the larger PCB hosts the ASIC and memory chips, while the smaller PCB supports the huge, touch-sensitive display.

AVIGO_ASIC.jpg (106741 Byte)The Avigo handheld PDA is based on a modified Z80 microprocessor, which has a 16-bit memory address bus. That means it can directly access up to 64k bytes. The Avigo Operating System is able to access multiple megabytes of memory using a technique known as "banking" or "paging", selecting 16k banks of extended memory to appear in 2 memory regions as needed. Like most other computers, Avigo memory is designated as RAM and ROM. The ROM however, is EEPROM (electrically erasable ROM), and the operating system and applications can - and do -routinely alter its contents.

AVIGO_R.jpg (68254 Byte)The 64k of base memory contains four 16k regions as follows:

$0000 - $3FFF System ROM region
$4000 - $7FFF ROM bank access region
$8000 - $BFFF RAM bank access region
$C000 - $FFFF System RAM region

The 1MByte Flash memory of the Avigo 10 with approx. 680KB available for the user could be expanded with a small 1MByte module. 

AVIGO_LCC.jpg (96194 Byte)The smaller of the two PCB's supports the touch-sensitive display and uses with the Toshiba 6C23 and 6C24 very high integrated column resp. row drivers.

AVIGO_LCR.jpg (124883 Byte)

The Avigo 10 had never the appeal of the Apple Newton or the success of the 3Com’s Palm Pilot series. With the introduction of the first Windows CE based PDA’s Texas Instruments discontinued the Avigo.

Don't miss the Personal Learning Tool PLT SHH1 based on a very similiar technology!


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© Joerg Woerner, January 17, 2002. No reprints without written permission.