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): 32/42頁
文件大?。?/td> 229K
代理商: PXASCC
Philips Semiconductors
Preliminary specification
XA-SCC
CMOS 16-bit communications microcontroller
1999 Mar 29
32
CLKOUT
SU01130
A19–A1
CS
BHE/BLE
OE
D15–D0
t
CHAV
t
CHSL
t
AVSL
NOTE 3
t
DIS
t
DIH
(NOTE 2)
t
CHSH
A0
t
CHAH
t
AHDR
(DOES NOT INCLUDE A0)
NOTE:
On Generic Data Reads, A0 can terminate a full clock period before A19–A1,
and therefore should not be used on some peripheral devices.
Figure 9. Generic (SRAM, ROM, Flash, IO Devices, etc.) Read on 16 Bit Bus
OE
CS
NOTE: The processor can prefetch from one to eight words.
NOTE 2: To meet the required Data In Hold time, data should be held on the bus at least until the earliest of CS, BHE, BLE, OE goes high, or until the address changes,
whichever comes first.
SU01131
CLKOUT
A[19:0]
BHE/BLE
D[15:0]
NOTE 3
t
CHSL
ADDRESS
ADDRESS + 2
ADDRESS + 4
t
CHAV
t
CHAV
t
CHSH
t
OHDE
DRIVEN
BY XA
DRIVEN BY XA
t
CHAV
t
DIS
t
NOTE 2
t
DIS
t
DIS
t
DIH
(NOTE 2)
t
NOTE 2
t
AVSL
Figure 10. Generic Memory (SRAM, ROM, Flash, etc.) Burst Code Fetch on 16 Bit Bus
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