Z80180 Datasheet, PDF (304/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z 8018x Fam ily
M PU Us e r M anual
288
Table 55. Pin Outputs in Each Operating Mode (Continued)
Mode
Internal
DMA
RESET
Address Data
M1 MREQ IORQ RD WR RFSH HALT BUSACK ST BUS BUS
Memory Read 1
0
Memory Write 1
0
I/O Read
1
1
I/O Write
1
1
1
1
1 01 1
*
1 10 1
*
0 01 1
*
0 10 1
*
1 11 1
1
1
0
A
IN
1
0
A OUT
1
0
A
IN
1
0
A OUT
1
1
Z
IN
• 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.
UM005001-ZMP0400