HYB514405BJ-50 SIEMENS [Siemens Semiconductor Group], HYB514405BJ-50 Datasheet - Page 9

• Manufacturer Part Number: HYB514405BJ-50
• Description: 1M x 4-Bit Dynamic RAM
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

AC Characteristics (cont’d)
T
Parameter
CAS before RAS Refresh Cycle
CAS setup time
CAS hold time
RAS to CAS precharge time
Write to RAS precharge time
Write hold time referenced to
RAS
CAS-before-RAS Counter Test
Cycle
CAS precharge time (CAS-
before-RAS counter test cycle)
Test Mode
Write command setup time
Write command hold time
Capacitance
T
Parameter
Input capacitance (A0 to A9)
Input capacitance (RAS, CAS, WE,OE)
Output capacitance (IO1 to IO4)
Semiconductor Group
A
A
= 0 to 70 ˚C,
= 0 to 70 ˚C;
V
V
CC
CC
= 5 V
= 5 V
10 %, t
10 %;
5)6)
f
Symbol
t
t
t
t
t
t
t
t
T
CSR
CHR
RPC
WRP
WRH
CPT
WTS
WTH
= 1 MHz
= 2 ns
min.
10
10
5
10
10
35
10
10
9
-50
max. min.
–
–
–
–
–
–
–
–
Symbol
C
C
C
i1
i2
io
Limit Values
HYB 514405BJ/BJL-50/-60/-70
10
10
5
10
10
40
10
10
-60
min.
–
–
–
max. min.
–
–
–
–
–
–
–
–
Limit Values
1M x 4 EDO - DRAM
10
10
5
10
10
40
10
10
max.
5
7
7
-70
max.
–
–
–
–
–
–
–
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Unit
pF
pF
pF
Note