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 | ||
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Z80 Clocks
Two clocks are driving the Z80. MCK, the master clock and SCK, the standby clock. The MCK (3.2768 MHz) is generated by a 9.8304 Xtal to the Blink and divided by 3, given to the pin 6. The SCK pulses at 25.6 KHz and is active on COMA state.
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