5. The memory modules:

• Pilot 1000 / 5000 Memory Modules
• Palm Pilot Memory Modules
• How to upgrade Memory Modules

Pilot 1000 / 5000 memory modules:

Schematics diagrams and component pinout

• There are 3 flavors of memory: 128K, 512K and 1M. All 3 have the same base board.
  The common components are: U4 (512K ROM) and bypass capacitors C1 to C4.
• There are 24 address lines available on the memory card connector.
  Future modules can handle up to 12 Mega RAM (1000 0000 ~ 10BF FFFF) and
  4 Mega ROM (10C0 0000 ~ 10FF FFFF) w/o modifications.
• ROM is 512K bytes (a.k.a. 256K 16 bit words)
• 1M memory module RAM is 512K 16 words (a.k.a. 1M byte). Using 1M memory module is lot better than using 512K or 128K modules because of the double bandwidth.

On the 128K model there is an additional U3 (128K x 8 RAM), model KM68V1000 as seen below.

On the 512K model there are U2 (512K x 8 RAM), model TC518512, U5 (AND gate), model TC7S08, R2 (jumper) and a jumper wire.

On the 1M model there are U1 and U2 (512K x 8 RAM), model TC518512 (together they form a 512K x 16 RAM, a.k.a. 1M RAM), U5 (AND gate), R1 (jumper) and a jumper wire, as seen below.

The memory chip used at 512K and 1M memory modules is the Toshiba's TC518512AFT-80V and an AND gate TC7S08F. The memory chip used at 128K memory module is the Sansung's KM68V1000BLT-7L

PalmPilot memory modules:

This is the NEW 512K Memory Module from PalmPilot Personal. (Courtesy of Carlos A.A.Hespanhol)
Note: This is a new printed circuit board w/ PalmOS version 2 firmware and can be upgraded up to 2 M !!!!!!

Please check Steve's Hardware Page about other PalmPilot memory modules and upgrades.

How to upgrade Memory Modules:

Check Steve's Hardware Page about upgrading memory modules to 1M or more by yourself !

You can buy memory chips from people at www.interwb.com/memory.htm#PILOT.

[ Next Page ] [ Previous Page ] [ Main Page ]