參數(shù)資料
型號(hào): VV6444C001
廠商: 意法半導(dǎo)體
英文描述: Low Cost Digital Camera (LCDC) Chipset
中文描述: 低成本數(shù)碼相機(jī)(LCDC)芯片組
文件頁(yè)數(shù): 19/60頁(yè)
文件大小: 352K
代理商: VV6444C001
STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
PRELIMINARY
CDSTV0680F-C
Commercial in confidence
19
T
STV0680F_contents.fm
Figure 2 : SDRAM Read Timing (16Mbit device, burst read)
Figure 3 : SDRAM Write Timing (16Mbit device, burst write)
Table 7 : Timing parameters for SDRAM read/write
4.3.3
The SDRAM refresh period from STV0680A is guaranteed to be no greater than 15.6
μ
S during ‘Snapshot’/self-timer/continuous/
tethered video modes of operation (i.e. not standby mode). In standby mode, the SDRAM is set to self-refresh, therefore no
SDRAM refresh Period
Symbol
Min
Max
Units
Symbol
Min
Max
Units
t
CK
166.45
166.89
ns
t
DS
81.01
ns
t
CH
t
CK
t
DH
83.41
ns
t
CL
t
CK
t
RCD
1
t
CK
t
AC
t
CK
t
RAS
5
5
t
CK
t
OH
0
ns
t
RC
7
t
CK
t
CMS
82.88
ns
t
RP
2
t
CK
t
CMH
82.85
ns
t
RCD
1
t
CK
t
AS
82.88
ns
t
AH
82.76
ns
DCLK
Command
DQM
A0-9,BA
A10
ACTIVE
WRITE
NOP
PRECHARGE
NOP
ROW
COLUMN
ROW
DIN M
DIN M + 1
DIN M + 2
DIN M + 3
DQ
t
CK
t
RCD
t
RC
CKE
t
RAS
t
RP
t
CMS
t
CMH
t
AS
t
AH
t
L
t
H
t
CMS
t
CMH
t
DS
t
DH
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