Z8S18020FSC Datasheet, PDF (65/70 Pages) Zilog, Inc. – ENHANCED Z180 MICROPROCESSOR

Zilog
Z80180/Z8S180/Z8L180
Enhanced Z180 Microprocessor
IOA7, 6: I/O Address Relocation (bits 7,6). IOA7 and the high-order 8 bits of 16-bit internal I/O address are al-
IOA6 relocate internal I/O as shown in Figure 85. Note that ways 0. IOA7 and IOA6 are cleared to 0 during Reset.
1
IOA7-IOA6 = 1 1
IOA7-IOA6 = 1 0
IOA7- IOA6 = 0 1
IOA7-IOA6 = 0 0
00FFH
00COH
00BFH
008OH
007OH
004OH
003FH
000OH
Figure 85. I/O Address Relocation
IOSTP. IOSTOP Mode (bit 5). IOSTOP mode is enabled
when IOSTP is set to 1. Normal I/O operation resumes
when IOSTOP is reprogrammed or Reset to 0
DS971800401
PRELIMINARY
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