參數(shù)資料
型號: PXASCC
廠商: NXP Semiconductors N.V.
英文描述: CMOS 16-bit communications microcontroller(CMOS 16位通信微控制器)
中文描述: 的CMOS 16位微控制器通信的CMOS(16位通信微控制器)
文件頁數(shù): 36/42頁
文件大?。?/td> 229K
代理商: PXASCC
Philips Semiconductors
Preliminary specification
XA-SCC
CMOS 16-bit communications microcontroller
1999 Mar 29
36
t
Note 2
ClkOut
SU01138
OE, BLE, CS
D[7:0]
t
CHAV
t
CHAV
t
CHAV
t
CHAV
EVEN ADDRESS
ADDRESS + 1
ADDRESS + 2
ADDRESS + 3
t
CHAV
NOTE 3
t
CHSH
LS BYTE
MS BYTE
LS BYTE
MS BYTE
t
DIS
t
Note 2
t
DIS
t
DIS
t
DIS
t
Note 2
t
Note 2
NOTES: BHE remains high (inactive) for all accesses on an 8 bit bus.
A burst code fetch can be from 1 to 8 words (1 word = 2 bytes), a 2 word fetch is shown here.
To meet the required Data In Hold time, data should be held on the bus at least until the earliest of CS, BLE, OE goes high, or until the address changes, whichever occurs
first.
Figure 17. Burst Code Fetch on 8 bit bus, Generic Memory
t
AVSL
t
CHSL
A0
CS
BLE, WE
D7–D0
SU01139
ClkOut
A19–A1
OE is inactive during all writes.
t
CHAV
t
CHSL
t
CHSH
t
SHAH
t
SHAH
t
AVSL
t
DVSL
t
SHDH
Figure 18. Generic 16 Bit Write on 8 Bit Bus
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