Z8018008VEC Zilog, Z8018008VEC Datasheet - Page 40

• Manufacturer Part Number: Z8018008VEC
• Description: IC 8MHZ Z180 CMOS ENH MPU 68PLCC
• Manufacturer: Zilog

Specifications of Z8018008VEC

• Processor Type: Z180
• Features: 8-Bit, Enhanced Z80 Megacell
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 68-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3012

DMA Control Signals
Notes:
PS014004-1106
1. t
2. t
3. DMA cycle starts.
4. CPU cycle starts.
DRQS
DRQS
and t
and t
DREQi
(at level sense)
DREQi
(at level sense)
TENDi
ST
ø
DHQH
DHQH
are specified for the rising edge of clock.
are specified for the rising edge of clock followed by T
*3 17
T
1
CPU or DMA READ/WRITE Cycle (Only DMA WRITE Cycle for TENDi)
Figure 19. DMA Control Signals
47
45
46
*2
T
2
45
46 *1
T
W
T
3
3
.
48
*4
18
T
1
Microprocessor Unit
Architecture
Z80180
34