IS61LV25616AL-12TI ISSI, IS61LV25616AL-12TI Datasheet - Page 8

• Manufacturer Part Number: IS61LV25616AL-12TI
• Description: SRAM 4Mb 256Kx16 12ns 3.3v
• Manufacturer: ISSI
• Type: Asynchronousr

Specifications of IS61LV25616AL-12TI

• Product Category: SRAM
• Memory Size: 4 Mbit
• Organization: 256 K x 16
• Access Time: 12 ns
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3.135 V
• Maximum Operating Current: 100 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: TSOP-44
• Interface: TTL
• Factory Pack Quantity: 135

IS61LV25616AL
8
WRITE CYCLE SWITCHING CHARACTERISTICS
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0V
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
3. The internal write time is defined by the overlap of CE LOW and UB or LB and WE LOW. All signals must be in valid
Notes:
1. WE is HIGH for a Read Cycle.
2. The device is continuously selected. OE, CE, UB, or LB = V
3. Address is valid prior to or coincident with CE LOW transition.
READ CYCLE NO. 2
Symbol
to 3.0V and output loading specified in Figure 1.
states to initiate a Write, but any one can go inactive to terminate the Write. The Data Input Setup and Hold timing
are referenced to the rising or falling edge of the signal that terminates the write.
t
t
t
t
t
t
t
t
t
t
t
t
wc
sce
aw
Ha
sa
Pwb
Pwe
Pwe
sD
HD
Hzwe
Lzwe
1
2
(2)
(2)
ADDRESS
Parameter
Write Cycle Time
CE to Write End
Address Setup Time to Write End
Address Hold from Write End
Address Setup Time
LB, UB Valid to End of Write
WE Pulse Width
WE Pulse Width (OE = LOW)
Data Setup to Write End
Data Hold from Write End
WE LOW to High-Z Output
WE HIGH to Low-Z Output
LB, UB
Current
Supply
D
V
OUT
OE
CE
DD
(1,3)
HIGH-Z
t
LZCE
t
LZB
t
PU
t
AA
50%
t
DOE
t
t
t
LZOE
ACE
BA
Integrated Silicon Solution, Inc. — www.issi.com —
t
RC
IL
.
Min. Max.
10
10
—
8
8
0
0
8
8
6
0
2
-10
(1,3)
t
RC
—
—
—
—
—
—
—
—
—
—
—
DATA VALID
(Over Operating Range)
5
Min. Max.
12
12
—
8
8
0
0
8
8
6
0
2
-12
t
HZCE
—
—
—
—
—
—
—
—
—
—
—
6
t
PD
t
t
t
OHA
HZB
HZOE
Unit
50%
ns
ns
ns
ns
ns
ns
ns
ns
ns
n s
ns
ns
UB_CEDR2.eps
I
I
CC
SB
1-800-379-4774
12/15/2011
Rev. F