HYB514171BJ-50- SIEMENS [Siemens Semiconductor Group], HYB514171BJ-50- Datasheet - Page 8

• Manufacturer Part Number: HYB514171BJ-50-
• Description: 256k x 16-Bit Dynamic RAM
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

AC Characteristics (cont’d)
T
Parameter
CAS precharge time
Access time from CAS precharge
RAS pulse width
RAS hold time from CAS precharge
Fast Page Mode Read-Modify-Write Cycle
Fast page mode read/write cycle time
CAS precharge to WE delay time
CAS-before-RAS Refresh Cycle
CAS setup time
CAS hold tim
RAS to CAS precharge time
Write to RAS precharge time
Write to RAS hold time
CAS-before-RAS Counter Test Cycle
CAS precharge time
Semiconductor Group
A
= 0 to 70 C;
V
SS
= 0 V;
V
CC
5, 6
= 5 V
10 %,
t
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
T
CP
CPA
RASP
RHCP
PRWC
CPWD
CSR
CHR
RPC
WRP
WRH
CPT
= 5 ns
8
min.
10
–
50
30
80
55
5
10
0
10
10
25
-50
Limit Values
max. min.
–
30
200k
–
–
–
–
–
–
–
–
–
HYB 514171BJ-50/-60
10
–
60
35
90
60
5
10
0
10
10
30
-60
256k
max.
–
35
200k
–
–
–
–
–
–
–
–
–
16 DRAM
Unit Note
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1998-10-01
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