參數(shù)資料
型號(hào): CL-PS7110-VI-A
廠商: CIRRUS LOGIC INC
元件分類: 微控制器/微處理器
英文描述: Low-Power System-on-a-Chip
中文描述: MROM, RISC MICROCONTROLLER, PQFP208
封裝: VQFP-208
文件頁(yè)數(shù): 65/82頁(yè)
文件大?。?/td> 1101K
代理商: CL-PS7110-VI-A
May 1997
65
DATA BOOK v1.5
ELECTRICAL SPECIFICATIONS
CL-PS7110
Low-Power System-on-a-Chip
Figure 4-3. DRAM Read Cycles
NOTES:
1)
t
RC
(read cycle time) = 160 ns maximum
t
RAC
(access time from RAS) = 80 ns maximum
t
RP
(RAS precharge time) = 80 ns maximum
t
CAS
(CAS pulse width) = 25 ns maximum
t
CP
(CAS precharge in Page mode = 25 ns maximum
t
PC
(Page mode cycle time) = 50 ns minimum at maximum
Word reads shown, for byte reads only one of CAS[3:0] is active, CAS0 for byte 0, etc.
2)
3)
4)
5)
6)
7)
t
10
t
9
DRA[12:0]
t
RC
MCLK
ROW
COL
ROW
COL 1
COL 2
COL n
RAS[3:0]
CAS[3:0]
D[31:0]
NMOE
NMWE
WORD
WRITE
t
RAS
t
RP
t
PC
t
CP
t
CAS
t
11
t
12
1
2
n
DRAM word read followed by Page mode read (MCLK shown for reference only)
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