參數(shù)資料
型號(hào): TMS6644148A
廠商: Texas Instruments, Inc.
英文描述: 4 194 304 BY 4-BIT/2 097 152 BY 8-BIT/1 048 576 BY 16-BIT BY 4-BANK SYNCHRONOUS DYNAMIC RANDOM-ACCESS MEMORIES
中文描述: 4 194 304 4位/ 2 097 152 8位/ 1 048 576由16位4,銀行同步動(dòng)態(tài)隨機(jī)存取記憶體
文件頁(yè)數(shù): 44/56頁(yè)
文件大?。?/td> 958K
代理商: TMS6644148A
T
4
S
S
T
4
P
BURST
TYPE
BANK
ROW
BURST CYCLE
(D/Q)
(0–3)
ADDR
a
b
c
d
e
f
g
h
Q
3
R0
C0
C0+1
C0+2
C0+3
C0+4
C0+5
C0+6
C0+7
Column-address sequence depends on programmed burst type and starting address C0 (see Table 6).
NOTE A: This example illustrates minimum tRC, tRCD, and tRP for the ’664xx4 at 100 MHz.
Figure 34. Refresh Cycles (Refreshes Followed by Read Burst, Followed by Refresh)
(CAS latency = 2, burst length = 8)
P
CKE
CS
A0–A9
A10
A11
A12
A13
W
CAS
RAS
DQMx
DQ
CLK
C0
R0
R0
R0
h
g
f
e
d
c
b
a
REFR
DEAC_3
READ_3
ACTV_3
REFR
REFR
tRC
tRC
tRCD
tRP
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