Z180

8-bit Microprocessor

Pinout

DIP64
         +---\/---+
     Vss |1     64| Ø
    XTAL |2     63| *RD
   EXTAL |3     62| *WR
   *WAIT |4     61| *UR
 *BUSACK |5     60| E
 *BUSREQ |6     59| *ME
  *RESET |7     58| *IOE
    *NMI |8     57| *REF
   *INT0 |9     56| *HALT
   *INT1 |10    55| *TEND1
   *INT2 |11    54| *DREQ1
      ST |12    53| CKS
      A0 |13    52| RXS/*CTS1
      A1 |14    51| TXS
      A2 |15    50| CKA1/*TEND0
      A3 |16    49| RXA1
      A4 |17    48| TXA1
      A5 |18    47| CKA0/*DREQ0
      A6 |19    46| RXA0
      A7 |20    45| TXA0
      A8 |21    44| *DCD0
      A9 |22    43| *CTS0
     A10 |23    42| *RTS0
     A11 |24    41| D7
     A12 |25    40| D6
     A13 |26    39| D5
     A14 |27    38| D4
     A15 |28    37| D3
     A16 |29    36| D2
     A17 |30    35| D1
A18/TOUT |31    34| D0
     Vcc |32    33| Vss
         +--------+

Frequency

DIP64
Set reader to FREQ, put black probe to GND, red probe to 15 to measure CPU clock
Guru's comment: 15, 23/24/25(vsync sometimes)

External links

Z180 page on Wikipedia
Z180 page on CPU-World

Files

HD64180.pdf