參數(shù)資料
型號(hào): IS42G32256-7PQ
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: DRAM
英文描述: POT 10K OHM 9MM VERT NO BUSHING
中文描述: 512K X 32 SYNCHRONOUS GRAPHICS RAM, 6 ns, PQFP100
封裝: 14 X 20 MM , PLASTIC, QFP-100
文件頁(yè)數(shù): 40/52頁(yè)
文件大?。?/td> 456K
代理商: IS42G32256-7PQ
IS42G32256
40
Integrated Silicon Solution, Inc.
ADVANCE INFORMATION
SR037-0C
09/10/98
ISSI
Figure 24. Page Read Cycle at Different Bank at Burst Length = 4
Notes:
1.
CS
can be “Don’t Care” when
RAS
,
CAS
, and
WE
are high at the clock high going edge.
2. To interrupt a burst read by row precharge, both the read and the precharge banks must be the same.
CLK
CKE
CS
RAS
CAS
A0-A8
WE
DSF
DQM
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
RAa
CAa
CAc
RBb
CBb
CAe
CBd
RAa
A10
A9
RBb
HIGH
HIGH
ROW ACTIVE
(A-BANK)
ROW
ACTIVE
(B-BANK)
READ
(A-BANK)
READ
(A-BANK)
READ
(B-BANK)
READ
(B-BANK)
READ
(A-BANK)
PRECHARGE
(A-BANK)
: DON’T CARE
DQ: CLOCK
LATENCY = 2
DQ: CLOCK
LATENCY = 3
NOTE 2
QBd0 QBd1 QAe0 QAe1
QBb2 QBb3
QBb0 QBb1
QAa2 QAa3
QAa0 QAa1
QAc0
QAc1
QBd0 QBd1 QAe0 QAe1
QBb2 QBb3
QBb0 QBb1
QAa2 QAa3
QAa0 QAa1
QAc0
QAc1
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IS42G32256-8PQ 256K x 32 x 2 (16-Mbit) SYNCHRONOUS GRAPHICS RAM
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