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The microprocessor is a standard Z80 running in CMOS version for low working and standby power consumption. For Z88, 4MHz and 6MHz capable Z80 CMOS were used : Z84C004PSC or Z84C0006PSC.


 
Z80 CPU Pinout
 

A11
A12
A13
A14
A15
CLK
D4
D3
D5
D6
VCC
D2
D7
D0
D1
/INT
/NMI
/HALT
/MREQ
/IORQ
+--------------+
|1    +--+   40|
|2           39|
|3           38|
|4           37|
|5           36|
|6           35|
|7           34|
|8           33|
|9           32|
|10  Z84C00  31|
|11   CPU    30|
|12          29|
|13          28|
|14          27|
|15          26|
|16          25|
|17          24|
|18          23|
|19          22|
|20          21|
+--------------+

A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
GND
/RFSH
/M1
/RST
/BUSRQ
/WAIT
/BUSAK
/WR
/RD
 
 

 

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