The Palm Serial were 3 successive proprietary 10-pin Serial connectors on the bottom of the first 3 series of models of PDAs from Palm, Inc. to provide serial communications: 1) pre-IrDA models; 2) the 1st IrDA models; 3) the 1st thin, metal-body models. In addition to Palm's models (and rebranded models like the IBM WorkPad series) similar serial connectors have been used in the Ericsson MC16 Palmtop and Handera equipment.
Pressing the HotSync button located at the base of the cradle closes a circuit between pins 2 and 7 which causes the activation of MUN2214 NPN transistor connected to pin 38 of the Motorola Dragonball CPU that provides a low signal on the IRQ1 UART, triggering the HotSync process.
On pin 8 when a modem connects to the Palm similarly closes a circuit pin 2 to activate another MUN2214 NPN transistor connected to pin 32 (GPIO UART) of the CPU to notify the presence of the modem.
PDA models that used the Palm Serial connector
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Pilot 1000
The Pilot 1000 and Pilot 5000 were the first generations of PDAs produced by Palm Computing (then a subsidiary of U.S. Robotics). It was introduced in March 1996.
The Pilot uses a Motorola 68328 processor at 16 MHz, and had 128 kB (Pilot ...
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Pilot 5000
An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its directional flight controls. Some other aircrew members, such as navigators or flight engineers, are also considered aviators, because they a ...
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PalmPilot Personal
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PalmPilot Professional
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Palm III
The Palm III is a personal digital assistant that was made by the Palm Computing division of 3Com. It went on sale in 1998 as a replacement for the PalmPilot handheld. It was the first Palm handheld to support infrared file transfer and a Flash RO ...
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Palm IIIe
The Palm IIIe is a PDA from Palm Computing released in 1999 briefly after the more expensive and more advanced Palm IIIx.
It shared the same screen as the Palm IIIx, which improved upon the Palm III's screen by featuring a new enhanced and easi ...
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Palm IIIx
The Palm IIIx is a PDA from Palm Computing released in 1999, briefly before the scaled down Palm IIIe was introduced into the marketplace.
The Palm IIIx improved upon the Palm III by featuring a new enhanced and easier to read LCD and 4 MB RA ...
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Palm IIIxe
The Palm IIIxe is a discontinued Palm personal digital assistant that was designed and manufactured by Palm, Inc. It cost US$249 when new.
Product data
Manufacturer's part number: 3C80304U
Dimensions
* Width: 8.1 cm (3.19 in)
* Depth ...
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Palm VII
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Palm VIIx
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Palm m100
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Palm m105
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TRGpro
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Handera 330
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Symbol 1500
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Symbol 1550
External links
PCPD Serial Pin-Out DescriptionsPalm HotSync(tm) Cradle and serial port information
Palm, Inc.