參數(shù)資料
型號: Z8S18033VSC
廠商: ZILOG INC
元件分類: 微控制器/微處理器
英文描述: CONN HDR INVERSE 120POS 5ROW R/A
中文描述: 8-BIT, MICROPROCESSOR, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 31/70頁
文件大?。?/td> 387K
代理商: Z8S18033VSC
Z80180/Z8S180/Z8L180
Enhanced Z180 Microprocessor
Zilog
DS971800401
P R E L I M I N A R Y
1-31
1
Figure 22. CPU Timing (/IOC = 0)
(I/O Read Cycle, I/O Write Cycle)
1. t
DRQS
and t
DHQH
are specified for the rising edge of clock followed by T
3
.
*2. t
DRQS
and t
DHQH
are specified for the rising edge of clock.
*3. DMA cycle starts.
*4. CPU cycle starts
Figure 23. DMA Control Signals
T
1
T
2
T
w
T
3
T
1
T
2
T
w
T
3
ADDRESS
φ
RD
IROQ
WR
28
9
29
28
29
13
22
25
I/O Read Cycle
I/O Write Cycle
CPU Timing (IOC=0)
I/O Read Cycle
I/O Write Cycle
47
45 46
48
18
*
4
*
2
(at level sense)
/DREQi
(at level sense)
/TENDi
ST
T
1
T
2
T
W
T
3
T
1
*
317
/DREQi
CPU or DMA Read/Write Cycle (Only DMA Write Cycle for /TENDi)
45
46
*
1
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