z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 301

• Manufacturer Part Number: z80189
• Description: Z80180, Z8s180, Z8l180 Mpu Operation
• Manufacturer: ZiLOG Semiconductor

OTHER OPERATION MODE TRANSITIONS
The following operation mode transitions are also possible.
1.
2.
–
–
–
HALT
IOSTOP
SLEEP
SYSTEM STOP
DREQ0, DREQ1 = 1
memory to/from (memory mapped)
I/O DMA transfer
BCR0, BCR1 =
NMI = 0 (all DMA transfers)
0000H
(all DMA transfers)
{
{
Family MPU User Manual
DMA
REFRESH
BUS RELEASE
DMA
REFRESH
BUS RELEASE
BUS RELEASE
BUS RELEASE
UM005003-0703
}
}
Z8018x
285