SMJ44400 Datasheet, PDF (5/21 Pages) Austin Semiconductor – 1M x 4 DRAM DYNAMIC RANDOM-ACCESS MEMORY

DRAM
SMJ44400
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
(-55oC<T <125oC or -40oC to +85oC; Vcc = 5V +10%)
A
-8
-10
-12
SYM
PARAMETER
TEST CONDITIONS
MIN MAX MIN MAX MIN MAX UNIT
V_OH High-level output voltage
I_OH = -5mA
2.4
2.4
2.4
V
V_OL Low-level output voltage
I_OL = 4.2mA
0.4
0.4
0.4 V
I_I Input current (leakage)
V_CC = 5.5V, V_I = 0V to 6.5V, All
other pins = 0V to V_CC
±10
±10
±10 μA
I_O Output current (leakage)
I_CC1 Read - or write-cycle current¹
I_CC2 Standby current
V_CC = 5.5V, V_O = 0V to V_CC,
CAS\ High
V_CC = 5.5V, Minimum cycle
After 1 memory cycle,
RAS\ and CAS\ High,
V_IH = 2.4V
±10
±10
±10 μA
85
80
70 mA
4
4
4 mA
Average refresh current
I_{CC3 (RAS\ only, or CBR\)1}
V_CC = 5.5V, Minimum cycle,
RAS\ cycling,
CAS\ High (RAS\ only),
RAS\ Low after CAS\ Low (CBR)
85
75
65 mA
I_CC4 Average page current²
CAPACITANCE (f = 1MHz)³
V_CC = 5.5V, t_PC = minimum,
RAS\ Low, CAS\ cycling
50
40
35 mA
SYM
C_i(A)
C_i(RC)
C_i(W)
C_O
PARAMETER
Input capacitance, address inputs
Input capacitance, strobe inputs
Input capacitance, write-enable inputs
Output capacitance
MAX
7
10
10
10
UNIT
pF
pF
pF
pF
SWITCHING CHARACTERISTICS (-55^oC<T_A<125^oC or -40^oC to +85^oC; Vcc = 5V +10%)
SYM
t_AA
t_CAC
t_CPA
t_RAC
t_OEA
t_OFF
t_OEZ
PARAMETERS
Access time from column address
Access time from CAS\ low
Access time from column precharge
Access time from RAS\ low
Access time from OE\ low
Output disable time after CAS\ High⁴
Output disable tiem after OE\ High⁴
-8
MAX
40
20
45
80
20
20
20
-10
MAX
45
25
50
100
25
25
25
-12
MAX
55
30
55
120
30
30
30
UNIT
ns
ns
ns
ns
ns
ns
ns
NOTES:
1. Measured with a maximum of one address change while RAS\ = V_IL.
2. Measured with a maximum of one address change while CAS\ = V_IH.
3. V_CC = 5V ±0.5V and the bias on the pins under test is 0V. Capacitance is sampled only at initial design and after any major change.
4. t_OFF and t_OEZ are specified when the output is no longer driven. The outputs are disabled by bringing either OE\ or CAS\ High.
SMJ44400
Rev. 2.2 01/10
Micross Components reserves the right to change products or specifications without notice.
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