SAA5700GP 查看數據表（PDF） - Philips Electronics
零件编号
产品描述 (功能)
生产厂家
SAA5700GP Datasheet PDF : 24 Pages
| |||
Philips Semiconductors
Chinese Character System Teletext
(CCST) decoder
Preliminary specification
SAA5700
DRAM Interface timing (see note 1 and Fig.4)
SYMBOL
Tcy(RAS)
tpch(RAS)
th(CAS)
td(RAS-CAS)
tWL(CAS)
Tcy(CAS)
tpch(CAS)
th(CAS-RAS)
tpch(CAS-RAS)
tsu(RA)
th(RA)
tsu(CA)
th(CA)
tsu(R)
th(R)(CAS)
th(R)(RAS)
tsu(W)
th(W)
tsu(i)(D)
th(i)(D)
tACC(R)(CAS)
tACC(R)(RAS)
PARAMETER
RAS cycle time
RAS precharge time
CAS hold time
RAS to CAS delay time
CAS pulse width LOW
CAS page mode cycle time
CAS precharge time
RAS hold time after CAS
CAS to RAS precharge time
row address set-up time
row address hold time
column address set-up time
column address hold time
read command set-up time
read command hold time from (CAS)
read command hold time from (RAS)
write command set-up time
write command hold time
data input set-up time
data input hold time
read access time from (CAS)
read access time from (RAS)
MIN.
−
60
80
20
20
50
10
20
10
0
10
0
15
0
0
10
0
15
0
15
−
−
Note
1. Based on a display clock frequency of 24 MHz, maximum 24 MHz + 500 ppm.
TYP.
375
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
MAX.
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
20
80
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1997 May 16
15
Share Link: 