Mitsubishi Electric Corp. Calculator Chips

This information has been gleaned from the following document: Derivation and Tabulation Associates, Inc., Digital Integrated Circuit D.A.T.A. Book, Volume 17, Book 7 (August 1980).

M58872P - 10 digit; printing
                      _____ _____
                     |     U     |
                K0 --| 1      40 |-- K1
         (-30V) Vp --| 2      39 |-- K2
                P1 --| 3      38 |-- K3
                P2 --| 4      37 |-- ACL Power On Reset
                P3 --| 5      36 |-- Vgg (-13V)
                P4 --| 6      35 |-- D1
                P5 --| 7      34 |-- D2
                P6 --| 8      33 |-- D3
                P7 --| 9      32 |-- D4
                P8 --| 10     31 |-- D5
                P9 --| 11     30 |-- D6
               P10 --| 12     29 |-- D7
               P11 --| 13     28 |-- D8
               P12 --| 14     27 |-- D9
               P13 --| 15     26 |-- MS1 Mode Switch In
               P14 --| 16     25 |-- MT Motor Drive Out
                NC --| 17     24 |-- MS2 Mode Switch In
  Digit Output D10 --| 18     23 |-- TP Timing Pulse In
 Reset Pulse In RP --| 19     22 |-- VC Clock Generating
          (0V) GND --| 20     21 |-- D0
                     |___________|

    Notes: Pn - magnet signal outputs and segment outputs.
           Kn - key inputs.