Zilog Z80180 Manual de usuario Pagina 304

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Z8018x
Family MPU User Manual
288
UM005003-0703
1 : High
0 : Low
A : Programmable
Z : High Impedance
IN : Input
OUT : Output
* : Invalid
PIN STATUS
Tables 56 describes the status of each ping during RESET and LOW
POWER OPERATION modes.
Internal
DMA
Memory Read 1 0 1 0 1 1 * 1 0 A IN
Memory Write 1 0 1 1 0 1 * 1 0 A OUT
I/O Read 1 1 0 0 1 1 * 1 0 A IN
I/O Write 1 1 0 1 0 1 * 1 0 A OUT
RESET 1 1 1 1 1 1 1 1 1 Z IN
Table 55. Pin Outputs in Each Operating Mode (Continued)
Mode M1 MREQ IORQ RD WR RFSH HALT BUSACK ST
Address
BUS
Data
BUS
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