參數(shù)資料
型號(hào): MPC180LMB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, PQFP100
封裝: LQFP-100
文件頁(yè)數(shù): 4/28頁(yè)
文件大小: 356K
代理商: MPC180LMB
12
MPC180 Hardware Reference Manual
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical and Thermal Characteristics
Figure 4. MPC8xx Interface: Read Cycle
Figure 5. MPC8xx Interface: Write Cycle
6.7 MPC180 and MPC8260 Timing Diagrams
A write cycle is dened as a transfer of data to the MPC180 from the host processor and a read cycle is
dened as a transfer of data from the MPC180 to the host processor. The processor initiates all data transfers,
acting as the bus master, and the MPC180 always acts as the bus slave. Data transfer is synchronous to the
main clock input and begins on the rising edge on which CS is asserted. At this time, the R/W signal
KHTAX
KHTAV
KHQX
KHQV
KHAX
AVKH
KHWX
WVKH
KHCX
CVKH
KHTSX
TSVKH
KHKH
CLK
TS
CS
R/W
A[18:29]
D[0:31]
TA
KHTAX
KHTAV
KHDX
DVKH
KHAX
AVKH
KHWX
WVKH
KHCX
CVKH
KHTSX
TSVKH
KHKH
CLK
TS
CS
R/W
A[18:29]
D[0:31]
TA
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