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PS2ADPT-xxx   by Versalent   Home
Converts PS/2 Keyboard to RS232 Serial Keyboard
A small low-cost module to convert a PC wired or wireless keyboard (PS2 and most USB) to an RS232 serial keyboard. PS2ADPT removes the real-time response requirement imposed by the PC keyboard protocol and translates the complex keycode sequences into the simple ASCII (serial) characters printed on the keyboard keys. Embedded systems no longer require expensive hand-held terminals with reduced-size keyboards. This device accepts a PS2 connector from the keyboard and provides a standard DB9 RS-232 output to connect to your asynchronous serial port at baud rates from 2400 to 115k. Low-Baud (LB) option extends the baud rates down to 110 baud. Keyboard power is supplied through PS2ADPT's keyboard connector. The PS2ADPT can be powered by supplying +5VDC, or +6 to +12VDC through the DB9 connector. Or can be powered by the optional 6V wall adapter (purchased separately). Parity and baud rates are user configured internally. Can be ordered in DCE or DTE* pin configurations (both with DB9 female).
For user-programmable version see the PS2PRO model
For wireless keyboard version see WLKB232 model

  PS2 Facts/Info     Typical Application     Manual    Key-Output Diagram 		PS2 Converter
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PS2ADPT Datasheet by Versalent
FEATURES
  • Converts PS/2 Keyboard to simple ASCII keyboard
  • Non-ASCII Keys Send 8-bit Characters
  • Keyboard LEDs Fully Operational
  • ALT/CTRL Keys Easily Detected By Host
  • RS-232 Connection To Host W/Selectable Baud/Parity. Baud rates from 110 to 115k
  • Works with wired or wireless PS/2 keyboards
  • Operates on your 5VDC, or 6-12VDC,or w/optional wall adapter (PS2-PWR)
  • Keyboard is 'Hot-Pluggable'
  • Low cost
APPLICATIONS
  • Systems without PS/2 protocol support
  • Embedded systems requiring low cost/full size keyboards
  • Full size override of miniature or limited-key keypads
 DESCRIPTION

       PS2ADPT is a 2.6" X 1.7" X 0.8" module which provides a complete interface to a standard IBM PC PS/2 keyboard handling the 2-wire keyboard protocol, and converting all the default SCAN SET 2 keycodes to simple ASCII characters. This allows non-PC systems using low-end microcontrollers, or powerhouse microcomputers to use inexpensive PC keyboards without dealing with the complexities of multiple keycodes in real-time. PS2ADPT handles all the real-time response requirements of the keyboard protocol and even transparently manages the keyboard LEDs (CAPS LOCK, NUM LOCK, SCROLL LOCK) independent of the host computer. The host receives just the ASCII characters as printed on the keyboard's keys with any modifiers such as the SHIFT keys already applied.
       PS2ADPT auto-detects the presence or absence of the keyboard on power up and reports the condition to the host. Full manual is available here. A diagram of all 102 keys and their corresponding serial-character outputs is available here.

PS2ADPT-XXX is available with power source and RS-232 options to provide the flexibility to mate to a variety of systems without additional adapters.
*All units whether DTE or DCE provide DB9 female connector
Models Available

Model NumberDefining Features
PS2ADPT-014 DB9=DCE, +5.0VDC Power supplied via DB9 Pin 4
PS2ADPT-016 DB9=DCE, +5.0VDC Power supplied via DB9 Pin 6
PS2ADPT-024* DB9=DCE, 6VDC to 12VDC Power supplied via DB9 Pin 4, or optional 6V wall adapter
PS2ADPT-026* DB9=DCE, 6VDC to 12VDC Power supplied via DB9 Pin 6, or optional 6V wall adapter
PS2ADPT-034 DB9=DTE, +5.0VDC Power supplied via DB9 Pin 4
PS2ADPT-036 DB9=DTE, +5.0VDC Power supplied via DB9 Pin 6
PS2ADPT-044* DB9=DTE, 6VDC to 12VDC Power supplied via DB9 Pin 4, or optional 6V wall adapter
PS2ADPT-046* DB9=DTE, 6VDC to 12VDC Power supplied via DB9 Pin 6, or optional 6V wall adapter
* These models cost slightly more due to additional internal regulator.

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