參數(shù)資料
型號(hào)： XA-SCC
廠商： NXP Semiconductors N.V.
英文描述： CMOS 16-bit communications microcontroller
中文描述： 的CMOS 16位微控制器的通信
文件頁(yè)數(shù)： 34/42頁(yè)
文件大?。?/td> 229K
代理商： XA-SCC
Philips Semiconductors
Preliminary specification
XA-SCC
CMOS 16-bit communications microcontroller
1999 Mar 29
34
NOTE 3
t
CHSL
NOTE 4
t
CHSH
t
CHSH
t
CHAV
t
CHSL
t
CHAH
t
CHAH
t
CHAV
t
CHAH
NOTE 4
A
SU01134
4 Byte Fetch (1 word = 2 bytes) is shown on 16 bit bus, burst can be 2 to 16 bytes (1 to 8 words.)
Note 4: To meet hold time, EDO DRAM drives valid Data until OE rises, or until new falling edge of CAS.
CLKOUT
t
CHAV
RAS (CS)
CAS (BHE/BLE)
OE
D[15:0]
DRIVEN BY XA
DRIVEN BY SLAVE DEVICE
WORD
(from CAS ADDR)
WORD
(from CAS ADDR + 2)
RAS ADDRESS
CAS ADDRESS
CAS ADDRESS + 2
t
AVSL
t
CPWH
t
CPWL
t
DIS
t
DIS
t
OHDE
tAVSL
Figure 13. DRAM EDO Burst Code Fetch on 16 Bit Bus
A
RAS
CASL/CASH
OE
D[15:0]
SU01135
CLKOUT
NOTE: The processor can prefetch from one to eight words (1 word = 2 bytes)
INSTRUCTION
INSTRUCTION
NOTE 2
NOTE 2
t
CHSL
t
CHSH
t
CHSH
t
CHAH
t
CHAV
t
CHAV
t
CHAH
CAS ADDRESS
CAS ADDRESS + 2
t
CHAV
t
CHAV
t
CHSL
t
CHSL
t
CHAH
t
DIS
t
DIS
t
CPWH
t
AVSL
RAS ADDRESS
t
AVSL
Figure 14. DRAM FPM (Fast Page Mode) Burst Code Fetch
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