HM5212325F Hitachi Semiconductor, HM5212325F Datasheet - Page 9

• Manufacturer Part Number: HM5212325F
• Description: 128M LVTTL interface SDRAM 100 MHz 1-Mword x 32-bit x 4-bank PC/100 SDRAM
• Manufacturer: Hitachi Semiconductor

AC Characteristics
(Tcase = 0 to +70 C [Tj max = 110 C]), V
Parameter
System clock cycle time
CLK high pulse width
CLK low pulse width
Access time from CLK
Data-out hold time
CLK to Data-out low impedance
CLK to Data-out high impedance
Input setup time
CKE setup time for power down
exit
Input hold time
Ref/Active to Ref/Active command
period
Active to Precharge command
period
Active command to column
command (same bank)
Precharge to active command
period
Write recovery or data-in to
precharge lead time
Active (a) to Active (b) command
period
Transition time (rise and fall)
Refresh period
(CAS latency = 2)
(CAS latency = 3)
(CAS latency = 2)
(CAS latency = 3)
HITACHI
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CK
CK
CKH
CKL
AC
AC
OH
LZ
HZ
AS
CES
CESP
AH
CEH
RC
RAS
RCD
RP
DPL
RRD
T
REF
, t
, t
CS
CH
, t
, t
DS
DH
,
,
PC/100
Symbol
Tclk
Tclk
Tch
Tcl
Tac
Tac
Toh
Tsi
Tpde
Thi
Trc
Tras
Trcd
Trp
Tdpl
Trrd
CC
= 3.3 V 0.3 V, V
HM5212325F
-B60
Min
15
10
3
3
—
—
3
2
—
2
2
1
70
50
20
20
10
20
1
—
Max
—
—
—
—
8
6
—
—
6
—
—
—
—
120000
—
—
—
—
5
64
SS
= 0 V)
HM5212325F-B60
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
Notes
1
1
1
1, 2
1, 2
1, 2, 3
1, 4
1, 5, 6
1
1, 5
1
1
1
1
1
1
9