C489ADAP.doc

         C489ADAP.DOC    Description

         This document provides the parts list, assembly information
         and other pertinent data required to program the '705C8 in
         the 40-pin socket used on the HC05EVM's(*) and HC05PGMR's.
         It has been revised to include Vdd voltages for the '705C5,
         '705C9, and the '705F6(**) devices.

                     805C4/705C8-DIL:PLCC Adapter     01-30-92ee.x6

         Pinouts for the '805C4 and the '705C8 are EXACTLY-the-SAME.

         Programming
         Voltage(5)       805C4          705C5,8,9(4)   705F6(**)
         ===========      ============   =============  =============
         Vpp(Vdc):        +20.00(Max.)   +15.00(Max.)   +15.00(Max.)
                          +19.75(Min.)   +14.75(Min.)   +14.75(Min.)
         (5): Vpp is measured directly on the Vpp-pin.

         PARTS LIST: 1 ea. Adapter PCB(Rev.0), dated 030388.

                     2 ea. 20-pin (.025x.025 X 0.1 center) pin-strips.

                     1 ea. ZIF-Socket; (1) Plastronics # P2044SP.
                                       (2) ENPLAS # PLCC-44*1.27-01.
                                       (3) Yamaichi # IC120-0444-206.

         ASSEMBLY INFORMATION:

         Insert pin-strips from bottom, and carefully solder on top.

         Insert ZIF-Socket from top, and carefully solder from bottom.

         NOTE:  The PLCC-MCU is installed upside-down (window-down),
                via the Horizontal-flip method, with notched-corner
                visible at the upper-right.

         ZIF-Socket Source: (1) Plastronics[Irving, Tx.]
                                Sales Mgr. 214/258-0581
                                TNT Products (Austin, Tx.)
                                Nat.Dist. 512/258-7196

                            (2) ENPLAS
                                TESCO Dist. (San Francisco, Ca.)
                                415/572-1683

                            (3) Yamaichi
                                Prime Dist. (Dallas, Tx.)
                                214/231-0170[Also, Textool Shrink-DIP]

         (4):40-pin DIL has EXACTLY the SAME pinouts as 705C8. For 44-
             PLCC compatibility; short pins 3-to-4; 17-to-18; 39-to-40.
         (*):HC05EVM's require Monitor 2.2C9 (evm05c9.s19) for C9 ONLY.
         (**):Requires 42-pin Shrink-DIP to 40-pin St'd-DIP Adapter.