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參數資料
| 型號： | LC7872E |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數： | 12/17頁 |
| 文件大小： | 295K |
| 代理商： | LC7872E |
Continued from preceding page.
No. 4868-4/17
LC7872E
Parameter
Symbol
Conditions
min
typ
max
Unit
SBCK, WE, RAS, CAS, OE, A0 to A7, DB0 to DB3,
Output low level voltage
VOL (1)
CDGM, TRANS0 to TRANS5, VSYNC, YS, CSYNC,
VSS
0.4
V
EFLG, FSX, FSC: IO = 2 mA
VOL (2)
DO: IO = 5 mA
VSS
0.75
V
Output off leakage current
IOFF
DO, DB0 to DB3
–5
+5
A
Built-in feedback resistance
RX
XIN1, XIN2, 4FSC2, FSCIN
1
M
8-bit D/A converter
VREF
VIDEO
2.40
2.45
2.50
V
reference voltage
8-bit D/A converter
RDA
VIDEO
300
output resistance
8-bit D/A converter output level
VDAC
VIDEO: Figure 9
Random read/write cycle time
tRC
Figures 2 and 3
250
ns
Page mode cycle time
tPC
Figures 4 and 5
130
ns
RAS access time
tRAC
Figure 2
210
ns
CAS access time
tCAC
Figures 2 and 4
10
ns
Output turn-off delay time
tOFF
Figures 2 and 4
20
ns
RAS precharge time
tRP
Figures 2, 3, 4, 5 and 6
100
ns
RAS pulse width
tRAS
Figures 2, 3 and 6
120
ns
RAS pulse width (page mode)
tRASP
Figures 4 and 5
18000
ns
RAS hold time
tRSH
Figures 2, 3, 4 and 5
60
ns
CAS hold time
tCSH
Figures 2 and 3
120
ns
CAS pulse width
tCAS
Figures 2, 3, 4 and 5
60
ns
CAS precharge time
tCPN
Figure 6
50
ns
CAS precharge time (page mode)
tCP
Figures 4 and 5
50
ns
Row address setup time
tASR
Figures 2, 3, 4 and 5
100
ns
Row address hold time
tRAH
Figures 2, 3, 4 and 5
50
ns
Column address setup time
tASC
Figures 2, 3, 4 and 5
0
ns
Column address hold time
tCAH
Figures 2, 3, 4 and 5
50
ns
Read command setup time
tRCS
Figure 2
150
ns
Read command hold time
tRCH
Figure 2
120
ns
(referenced to CAS)
Read command hold time
tRRH
Figure 2
120
ns
(referenced to RAS)
Write command setup time
tWCS
Figure 3
100
ns
Write command hold time
tWCH
Figure 3
50
ns
Write command pulse width
tWP
Figure 3
150
ns
Write data setup time
tDS
Figure 3
100
ns
Write data hold time
tDH
Figure 3
100
ns
CAS setup time (CAS before RAS)
tCSR
Figure 6
50
ns
CAS hold time (CAS before RAS)
tCHR
Figure 6
50
ns
RAS precharge CAS active time
tRPC
Figure 6
50
ns
Video setup time
tVS
Superimposition: Figure 7
20
25
ns
SBCK output delay time
tSD
NTSC mode: Figure 8
4.74
5.03
s
PAL mode:
4.79
5.08
s
SBCK cycle frequency
fSC
NTSC mode: Figure 8
224
kHz
PAL mode:
222
kHz
PW setup time
tPWS
Figure 8
100
ns
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