參數(shù)資料
型號: XA-H4
廠商: NXP Semiconductors N.V.
英文描述: Single-chip 16-bit microcontroller
中文描述: 單片16位微控制器
文件頁數(shù): 34/42頁
文件大小: 225K
代理商: XA-H4
Philips Semiconductors
Preliminary specification
XA-H4
Single-chip 16-bit microcontroller
1999 Sep 24
34
SU01281
t
CHSL
D[15:0]
OE
CASL, CASH
RAS
A
t
CHAH
ClkOut
t
AVSL
t
CHAV
CAS ADDRESS
RAS ADDRESS
t
AVSL
t
CPWH
Note 2
CAS ADDRESS +2
t
DIS
t
DIS
t
CHAV
INSTRUCTION
INSTRUCTION
t
CHAV
Note:
The processor can fetch from one to eight Words (1 Word = 2 bytes)
t
CHAV
t
CHSL
Note 2
t
CHSL
t
CHSH
t
CHAH
t
CHSH
t
CHAH
Figure 12. DRAM FPM (Fast Page Mode) Burst Code Fetch
SU01282
t
CHSL
t
CHSH
D
WE
CAS (BHE/BLE)
RAS (CS)
A
ClkOut
t
AVSL
t
CHAV
CAS ADDRESS
RAS ADDRESS
t
CHAH
t
AVSL
Note 1
t
CHSH
Valid Data
t
CHSL
t
CHAH
Note.
OE is inactive during all writes.
t
CHDV
Figure 13. DRAM Write (on 16-Bit Bus, also 8-Bit Write on 8-Bit Bus)
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