ICSI IS41LV16105-50K 1m x 16 (16-mbit) dynamic ram with fast page mode Datasheet

IS41C16105
IS41LV16105
1M x 16 (16-MBIT) DYNAMIC RAM
WITH FAST PAGE MODE
DESCRIPTION
The 1+51 IS41C16105 and IS41LV16105 are 1,048,576 x
FEATURES
• TTL compatible inputs and outputs; tristate I/O
• Refresh Interval: 1,024 cycles/16 ms
• Refresh Mode: RAS-Only, CAS-before-RAS (CBR),
Hidden
• JEDEC standard pinout
• Single power supply:
5V ± 10% (IS41C16105)
3.3V ± 10% (IS41LV16105)
• Byte Write and Byte Read operation via two CAS
16-bit high-performance CMOS Dynamic Random Access
Memories. Fast Page Mode allows 1,024 random accesses
within a single row with access cycle time as short as 20 ns per
16-bit word. The Byte Write control, of upper and lower byte,
makes the IS41C16105 ideal for use in 16-, 32-bit wide data
bus systems.
These features make the IS41C16105 and IS41LV16105
ideally suited for high-bandwidth graphics, digital signal
processing, high-performance computing systems, and
peripheral applications.
• Industrail temperature range -40oC to 85oC
The IS41C16105 and IS41LV16105 are packaged in a
42-pin 400mil SOJ and 400mil 44- (50-) pin TSOP-2.
KEY TIMING PARAMETERS
Parameter
-50
-60
Unit
Max. RAS Access Time (tRAC)
50
60
ns
Max. CAS Access Time (tCAC)
13
15
ns
Max. Column Address Access Time (tAA)
25
30
ns
Min. Fast Page Mode Cycle Time (tPC)
20
25
ns
Min. Read/Write Cycle Time (tRC)
84
104
ns
PIN CONFIGURATIONS
44(50)-Pin TSOP-2
VCC
1
50
GND
I/O0
2
49
I/O15
I/O1
3
48
I/O14
I/O2
4
47
I/O13
I/O3
5
46
I/O12
VCC
6
45
GND
42-Pin SOJ
VCC
1
42
GND
I/O0
2
41
I/O15
I/O1
3
40
I/O14
I/O2
4
39
I/O13
I/O3
5
38
I/O12
VCC
6
37
GND
I/O4
7
44
I/O11
I/O5
8
43
I/O10
I/O4
7
36
I/O11
I/O6
9
42
I/O9
I/O5
8
35
I/O10
9
34
I/O9
PIN DESCRIPTIONS
A0-A9
Address Inputs
I/O0-15
Data Inputs/Outputs
I/O7
10
41
I/O8
I/O6
NC
11
40
NC
I/O7
10
33
I/O8
NC
11
32
NC
WE
Write Enable
NC
15
36
NC
NC
12
31
LCAS
NC
16
35
LCAS
WE
13
30
UCAS
OE
Output Enable
WE
17
34
UCAS
RAS
14
29
OE
RAS
18
33
OE
RAS
Row Address Strobe
NC
15
28
A9
NC
19
32
A9
NC
16
27
A8
UCAS
Upper Column Address Strobe
NC
20
31
A8
A0
21
30
A7
A0
17
26
A7
LCAS
Lower Column Address Strobe
A1
22
29
A6
A1
18
25
A6
28
A5
19
24
A5
Power
23
A2
Vcc
A2
A3
24
27
A4
A3
20
23
A4
GND
Ground
VCC
25
26
GND
VCC
21
22
GND
NC
No Connection
ICSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors
which may appear in this publication. © Copyright 2000, Integrated Circuit Solution Inc.
Integrated Circuit Solution Inc.
DR005-0C
1
IS41C16105
IS41LV16105
FUNCTIONAL BLOCK DIAGRAM
OE
WE
LCAS
UCAS
CAS
CLOCK
GENERATOR
WE
CONTROL
LOGICS
CAS
WE
OE
CONTROL
LOGIC
OE
DATA I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
ADDRESS
BUFFERS
A0-A9
2
ROW DECODER
REFRESH
COUNTER
MEMORY ARRAY
1,048,576 x 16
DATA I/O BUFFERS
RAS
CLOCK
GENERATOR
RAS
RAS
I/O0-I/O15
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
TRUTH TABLE
Standby
Read: Word
Read: Lower Byte
RAS
H
L
L
Read: Upper Byte
L
H
L
H
L
ROW/COL
Write: Word (Early Write)
Write: Lower Byte (Early Write)
L
L
L
L
L
H
L
L
X
X
ROW/COL
ROW/COL
Write: Upper Byte (Early Write)
L
H
L
L
X
ROW/COL
L
L→H→L
L→H→L
L
H→L
L
L
L
H
L
L
L
L
H
L
H→L
H
L
X
X
L→H
L
X
X
X
ROW/COL
ROW/COL
ROW/COL
ROW/NA
X
Function
Read-Write(1,2)
Hidden Refresh
Read
Write(1,3)
RAS-Only Refresh
CBR Refresh(4)
(2)
LCAS UCAS
H
H
L
L
L
H
WE
X
H
H
OE
X
L
L
Address tR/tC
X
ROW/COL
ROW/COL
I/O
High-Z
DOUT
Lower Byte, DOUT
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, DOUT
DIN
Lower Byte, DIN
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, DIN
DOUT, DIN
DOUT
DOUT
High-Z
High-Z
Notes:
1. These WRITE cycles may also be BYTE WRITE cycles (either LCAS or UCAS active).
2. These READ cycles may also be BYTE READ cycles (either LCAS or UCAS active).
3. EARLY WRITE only.
4. At least one of the two CAS signals must be active (LCAS or UCAS).
Integrated Circuit Solution Inc.
DR005-0C
3
IS41C16105
IS41LV16105
Functional Description
Write Cycle
The IS41C16105 and IS41LV16105 is a CMOS DRAM
optimized for high-speed bandwidth, low power
applications. During READ or WRITE cycles, each bit is
uniquely addressed through the 10 address bits. These
are entered ten bits (A0-A9) at a time. The row address is
latched by the Row Address Strobe (RAS). The column
address is latched by the Column Address Strobe (CAS).
RAS is used to latch the first ten bits and CAS is used the
latter ten bits.
The IS41C16105 and IS41LV16105 has two CAS controls,
LCAS and UCAS. The LCAS and UCAS inputs internally
generates a CAS signal functioning in an identical manner
to the single CAS input on the other 1M x 16 DRAMs. The
key difference is that each CAS controls its corresponding
I/O tristate logic (in conjunction with OE and WE and RAS).
LCAS controls I/O0 through I/O7 and UCAS controls I/O8
through I/O15.
The IS41C16105 and IS41LV16105 CAS function is determined by the first CAS (LCAS or UCAS) transitioning
LOW and the last transitioning back HIGH. The two CAS
controls give the IS41C16105 and IS41LV16105 both
BYTE READ and BYTE WRITE cycle capabilities.
A write cycle is initiated by the falling edge of CAS and
WE, whichever occurs last. The input data must be valid
at or before the falling edge of CAS or WE, whichever
occurs last.
Memory Cycle
A memory cycle is initiated by bring RAS LOW and it is
terminated by returning both RAS and CAS HIGH. To
ensures proper device operation and data integrity any
memory cycle, once initiated, must not be ended or
aborted before the minimum tRAS time has expired. A new
cycle must not be initiated until the minimum precharge
time tRP, tCP has elapsed.
Refresh Cycle
To retain data, 1,024 refresh cycles are required in each
16 ms period. There are two ways to refresh the memory.
1. By clocking each of the 1,024 row addresses (A0
through A9) with RAS at least once every 16 ms. Any
read, write, read-modify-write or RAS-only cycle refreshes the addressed row.
2. Using a CAS-before-RAS refresh cycle. CAS-beforeRAS refresh is activated by the falling edge of RAS,
while holding CAS LOW. In CAS-before-RAS refresh
cycle, an internal 10-bit counter provides the row
addresses and the external address inputs are ignored.
CAS-before-RAS is a refresh-only mode and no data
access or device selection is allowed. Thus, the output
remains in the High-Z state during the cycle.
Power-On
After application of the VCC supply, an initial pause of
200 µs is required followed by a minimum of eight initialization cycles (any combination of cycles containing a
RAS signal).
During power-on, it is recommended that RAS track with
VCC or be held at a valid VIH to avoid current surges.
Read Cycle
A read cycle is initiated by the falling edge of CAS or OE,
whichever occurs last, while holding WE HIGH. The
column address must be held for a minimum time specified
by tAR. Data Out becomes valid only when tRAC, tAA, tCAC
and tOEA are all satisfied. As a result, the access time is
dependent on the timing relationships between these
parameters.
4
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Parameters
VT
Voltage on Any Pin Relative to GND
VCC
Supply Voltage
IOUT
PD
TA
Output Current
Power Dissipation
Commercial Operation Temperature
Industrail Operation Temperature
Storage Temperature
TSTG
5V
3.3V
5V
3.3V
Rating
Unit
–1.0 to +7.0
–0.5 to +4.6
–1.0 to +7.0
–0.5 to +4.6
50
1
0 to +70
–40 to +85
–55 to +125
V
V
mA
W
°C
°C
°C
Note:
1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect
reliability.
RECOMMENDED OPERATING CONDITIONS (Voltages are referenced to GND.)
Symbol
Parameter
VCC
Supply Voltage
VIH
Input High Voltage
VIL
Input Low Voltage
TA
Commercial Ambient Temperature
Industrail Ambient Temperature
5V
3.3V
5V
3.3V
5V
3.3V
Min.
Typ.
Max.
Unit
4.5
3.0
2.4
2.0
–1.0
–0.3
0
–40
5.0
3.3
—
—
—
—
—
—
5.5
3.6
VCC + 1.0
VCC + 0.3
0.8
0.8
70
85
V
V
V
°C
°C
CAPACITANCE(1,2)
Symbol
Parameter
CIN1
CIN2
CIO
Input Capacitance: A0-A9
Input Capacitance: RAS, UCAS, LCAS, WE, OE
Data Input/Output Capacitance: I/O0-I/O15
Max.
Unit
5
7
7
pF
pF
pF
Notes:
1. Tested initially and after any design or process changes that may affect these parameters.
2. Test conditions: TA = 25°C, f = 1 MHz,
Integrated Circuit Solution Inc.
DR005-0C
5
IS41C16105
IS41LV16105
ELECTRICAL CHARACTERISTICS(1)
(Recommended Operating Conditions unless otherwise noted.)
Symbol
Parameter
Test Condition
IIL
Input Leakage Current
IIO
Speed
Min.
Max.
Unit
Any input 0V < VIN < Vcc
Other inputs not under test = 0V
–5
5
µA
Output Leakage Current
Output is disabled (Hi-Z)
0V < VOUT < Vcc
–5
5
µA
VOH
Output High Voltage Level
IOH = –5.0 mA (5V)
IOH = –2.0 mA (3.3V)
2.4
—
V
VOL
Output Low Voltage Level
IOL = 4.2 mA (5V)
IOL = 2.0 mA (3.3V)
—
0.4
V
ICC1
Standby Current: TTL
RAS, LCAS, UCAS > VIH Commerical
—
—
—
—
2
1
3
2
mA
5V
3.3V
Extended & Idustrial 5V
3.3V
mA
ICC2
Standby Current: CMOS
RAS, LCAS, UCAS > VCC – 0.2V
5V
3.3V
—
—
1
0.5
mA
ICC3
Operating Current:
Random Read/Write(2,3,4)
Average Power Supply Current
RAS, LCAS, UCAS,
Address Cycling, tRC = tRC (min.)
-50
-60
—
—
160
145
mA
ICC4
Operating Current:
Fast Page Mode(2,3,4)
Average Power Supply Current
RAS = VIL, LCAS, UCAS,
Cycling tPC = tPC (min.)
-50
-60
—
—
90
80
mA
ICC5
Refresh Current:
RAS-Only(2,3)
Average Power Supply Current
RAS Cycling, LCAS, UCAS > VIH
tRC = tRC (min.)
-50
-60
—
—
160
145
mA
ICC6
Refresh Current:
RAS, LCAS, UCAS Cycling
CBR(2,3,5)
tRC = tRC (min.)
Average Power Supply Current
-50
-60
—
—
160
145
mA
Notes:
1. An initial pause of 200 µs is required after power-up followed by eight RAS refresh cycles (RAS-Only or CBR) before proper device
operation is assured. The eight RAS cycles wake-up should be repeated any time the tREF refresh requirement is exceeded.
2. Dependent on cycle rates.
3. Specified values are obtained with minimum cycle time and the output open.
4. Column-address is changed once each Fast page cycle.
5. Enables on-chip refresh and address counters.
6
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
AC CHARACTERISTICS(1,2,3,4,5,6)
(Recommended Operating Conditions unless otherwise noted.)
Symbol
tRC
tRAC
tCAC
tAA
tRAS
tRP
tCAS
tCP
tCSH
tRCD
tASR
tRAH
tASC
tCAH
tAR
tRAD
tRAL
tRPC
tRSH
tRHCP
tCLZ
tCRP
tOD
tOE
tOED
tOEHC
tOEP
tOES
tRCS
tRRH
tRCH
tWCH
tWCR
tWP
tWPZ
tRWL
tCWL
tWCS
tDHR
Parameter
Random READ or WRITE Cycle Time
Access Time from RAS(6, 7)
Access Time from CAS(6, 8, 15)
Access Time from Column-Address(6)
RAS Pulse Width
RAS Precharge Time
CAS Pulse Width(26)
CAS Precharge Time(9, 25)
CAS Hold Time (21)
RAS to CAS Delay Time(10, 20)
Row-Address Setup Time
Row-Address Hold Time
Column-Address Setup Time(20)
Column-Address Hold Time(20)
Column-Address Hold Time
(referenced to RAS)
RAS to Column-Address Delay Time(11)
Column-Address to RAS Lead Time
RAS to CAS Precharge Time
RAS Hold Time(27)
RAS Hold Time from CAS Precharge
CAS to Output in Low-Z(15, 29)
CAS to RAS Precharge Time(21)
Output Disable Time(19, 28, 29)
Output Enable Time(15, 16)
Output Enable Data Delay (Write)
OE HIGH Hold Time from CAS HIGH
OE HIGH Pulse Width
OE LOW to CAS HIGH Setup Time
Read Command Setup Time(17, 20)
Read Command Hold Time
(referenced to RAS)(12)
Read Command Hold Time
(referenced to CAS)(12, 17, 21)
Write Command Hold Time(17, 27)
Write Command Hold Time
(referenced to RAS)(17)
Write Command Pulse Width(17)
WE Pulse Widths to Disable Outputs
Write Command to RAS Lead Time(17)
Write Command to CAS Lead Time(17, 21)
Write Command Setup Time(14, 17, 20)
Data-in Hold Time (referenced to RAS)
Integrated Circuit Solution Inc.
DR005-0C
-50
Max.
Min.
-60
Max.
84
—
—
—
50
30
8
9
38
12
0
8
0
8
30
—
50
13
25
10K
—
10K
—
—
37
—
—
—
—
—
104
—
—
—
60
40
10
9
40
14
0
10
0
10
40
—
60
15
30
10K
—
10K
—
—
45
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
25
5
8
37
0
5
3
—
20
5
10
5
0
0
25
—
—
—
—
—
—
15
13
—
—
—
—
—
—
12
30
5
10
37
0
5
3
—
20
5
10
5
0
0
30
—
—
—
—
—
—
15
15
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
0
—
0
—
ns
8
40
—
—
10
50
—
—
ns
ns
8
10
13
8
0
39
—
—
—
—
—
—
10
10
15
10
0
39
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
Min.
Units
7
IS41C16105
IS41LV16105
AC CHARACTERISTICS (Continued)(1,2,3,4,5,6)
(Recommended Operating Conditions unless otherwise noted.)
Symbol
tACH
tOEH
tDS
tDH
tRWC
tRWD
tCWD
tAWD
tPC
tRASP
tCPA
tPRWC
tCOH
tOFF
tWHZ
tCLCH
tCSR
tCHR
tORD
tREF
tT
Parameter
Column-Address Setup Time to CAS
Precharge during WRITE Cycle
OE Hold Time from WE during
READ-MODIFY-WRITE cycle(18)
Data-In Setup Time(15, 22)
Data-In Hold Time(15, 22)
READ-MODIFY-WRITE Cycle Time
RAS to WE Delay Time during
READ-MODIFY-WRITE Cycle(14)
CAS to WE Delay Time(14, 20)
Column-Address to WE Delay Time(14)
Fast Page Mode READ or WRITE
Cycle Time(24)
RAS Pulse Width
Access Time from CAS Precharge(15)
READ-WRITE Cycle Time(24)
Data Output Hold after CAS LOW
Output Buffer Turn-Off Delay from
CAS or RAS(13,15,19, 29)
Output Disable Delay from WE
Last CAS going LOW to First CAS
returning HIGH(23)
CAS Setup Time (CBR REFRESH)(30, 20)
CAS Hold Time (CBR REFRESH)(30, 21)
OE Setup Time prior to RAS during
HIDDEN REFRESH Cycle
Auto Refresh Period (1,024 Cycles)
Transition Time (Rise or Fall)(2, 3)
Min.
-50
Max.
Min.
-60
Max.
Units
15
—
15
—
ns
8
—
10
—
ns
0
8
108
64
—
—
—
—
0
10
133
77
—
—
—
—
ns
ns
ns
ns
26
39
20
—
—
—
32
47
25
—
—
—
ns
ns
ns
50
—
56
5
1.6
100K
30
—
—
12
60
—
68
5
1.6
100K
35
—
—
15
ns
ns
ns
ns
ns
3
10
10
—
3
10
10
—
ns
ns
5
8
0
—
—
—
5
10
0
—
—
—
ns
ns
ns
—
1
16
50
—
1
16
50
ms
ns
AC TEST CONDITIONS
Output load:
Two TTL Loads and 50 pF (Vcc = 5.0V ±10%)
One TTL Load and 50 pF (Vcc = 3.3V ±10%)
Input timing reference levels: VIH = 2.4V, VIL = 0.8V (Vcc = 5.0V ±10%);
VIH = 2.0V, VIL = 0.8V (Vcc = 3.3V ±10%)
Output timing reference levels: VOH = 2.0V, VOL = 0.8V (Vcc = 5V ±10%, 3.3V ±10%)
8
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
Notes:
1. An initial pause of 200 µs is required after power-up followed by eight RAS refresh cycle (RAS-Only or CBR) before proper device
operation is assured. The eight RAS cycles wake-up should be repeated any time the tREF refresh requirement is exceeded.
2. VIH (MIN) and VIL (MAX) are reference levels for measuring timing of input signals. Transition times, are measured between VIH
and VIL (or between VIL and VIH) and assume to be 1 ns for all inputs.
3. In addition to meeting the transition rate specification, all input signals must transit between VIH and VIL (or between VIL and VIH)
in a monotonic manner.
4. If CAS and RAS = VIH, data output is High-Z.
5. If CAS = VIL, data output may contain data from the last valid READ cycle.
6. Measured with a load equivalent to one TTL gate and 50 pF.
7. Assumes that tRCD < tRCD (MAX). If tRCD is greater than the maximum recommended value shown in this table, tRAC will increase
by the amount that tRCD exceeds the value shown.
8. Assumes that tRCD > tRCD (MAX).
9. If CAS is LOW at the falling edge of RAS, data out will be maintained from the previous cycle. To initiate a new cycle and clear the
data output buffer, CAS and RAS must be pulsed for tCP.
10. Operation with the tRCD (MAX) limit ensures that tRAC (MAX) can be met. tRCD (MAX) is specified as a reference point only; if tRCD
is greater than the specified tRCD (MAX) limit, access time is controlled exclusively by tCAC.
11. Operation within the tRAD (MAX) limit ensures that tRCD (MAX) can be met. tRAD (MAX) is specified as a reference point only; if tRAD
is greater than the specified tRAD (MAX) limit, access time is controlled exclusively by tAA.
12. Either tRCH or tRRH must be satisfied for a READ cycle.
13. tOFF (MAX) defines the time at which the output achieves the open circuit condition; it is not a reference to VOH or VOL.
14. tWCS, tRWD, tAWD and tCWD are restrictive operating parameters in LATE WRITE and READ-MODIFY-WRITE cycle only. If tWCS > tWCS
(MIN), the cycle is an EARLY WRITE cycle and the data output will remain open circuit throughout the entire cycle. If tRWD > tRWD
(MIN), tAWD > tAWD (MIN) and tCWD > tCWD (MIN), the cycle is a READ-WRITE cycle and the data output will contain data read from
the selected cell. If neither of the above conditions is met, the state of I/O (at access time and until CAS and RAS or OE go back
to VIH) is indeterminate. OE held HIGH and WE taken LOW after CAS goes LOW result in a LATE WRITE (OE-controlled) cycle.
15. Output parameter (I/O) is referenced to corresponding CAS input, I/O0-I/O7 by LCAS and I/O8-I/O15 by UCAS.
16. During a READ cycle, if OE is LOW then taken HIGH before CAS goes HIGH, I/O goes open. If OE is tied permanently LOW, a
LATE WRITE or READ-MODIFY-WRITE is not possible.
17. Write command is defined as WE going low.
18. LATE WRITE and READ-MODIFY-WRITE cycles must have both tOD and tOEH met (OE HIGH during WRITE cycle) in order to ensure
that the output buffers will be open during the WRITE cycle. The I/Os will provide the previously written data if CAS remains LOW
and OE is taken back to LOW after tOEH is met.
19. The I/Os are in open during READ cycles once tOD or tOFF occur.
20. The first χCAS edge to transition LOW.
21. The last χCAS edge to transition HIGH.
22. These parameters are referenced to CAS leading edge in EARLY WRITE cycles and WE leading edge in LATE WRITE or READMODIFY-WRITE cycles.
23. Last falling χCAS edge to first rising χCAS edge.
24. Last rising χCAS edge to next cycle’s last rising χCAS edge.
25. Last rising χCAS edge to first falling χCAS edge.
26. Each χCAS must meet minimum pulse width.
27. Last χCAS to go LOW.
28. I/Os controlled, regardless UCAS and LCAS.
29. The 3 ns minimum is a parameter guaranteed by design.
30. Enables on-chip refresh and address counters.
Integrated Circuit Solution Inc.
DR005-0C
9
IS41C16105
IS41LV16105
READ CYCLE
tRC
tRAS
tRP
RAS
tCSH
tCRP
tRSH
tCAS tCLCH
tRCD
tRRH
UCAS/LCAS
tAR
tRAD
tASR
ADDRESS
tRAH
tRAL
tCAH
tASC
Row
Column
Row
tRCS
tRCH
WE
tAA
tRAC
tCAC
tCLC
I/O
tOFF(1)
Open
Open
Valid Data
tOE
tOD
OE
tOES
Don’t Care
Note:
1. tOFF is referenced from rising edge of RAS or CAS, whichever occurs last.
10
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
READ WRITE CYCLE (LATE WRITE and READ-MODIFY-WRITE Cycles)
tRWC
tRAS
tRP
RAS
tCSH
tCRP
tRSH
tCAS tCLCH
tRCD
UCAS/LCAS
tAR
tRAD
tRAH
tASR
tRAL
tCAH
tASC
tACH
ADDRESS
Row
Column
Row
tRWD
tCWL
tRWL
tCWD
tRCS
tAWD
tWP
WE
tAA
tRAC
tCAC
tCLZ
I/O
tDS
Open
Valid DOUT
tOE
tOD
tDH
Valid DIN
Open
tOEH
OE
Don’t Care
Integrated Circuit Solution Inc.
DR005-0C
11
IS41C16105
IS41LV16105
EARLY WRITE CYCLE (OE = DON'T CARE)
tRC
tRAS
tRP
RAS
tCSH
tCRP
tRSH
tCAS tCLCH
tRCD
UCAS/LCAS
tAR
tRAD
tASR
ADDRESS
tRAH
tRAL
tCAH
tACH
tASC
Row
Column
Row
tCWL
tRWL
tWCR
tWCS
tWCH
tWP
WE
tDHR
tDS
I/O
tDH
Valid Data
Don’t Care
12
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
FAST PAGE MODE READ CYCLE
tRASP
tRP
RAS
tPRWC
tCAS
tCSH
tCAS
tCRP
tRCD
tRSH
tCAS
tCP
tCRP
tCP
UCAS/LCAS
tAR
tRAH
tRAD
tASC
tASR
ADDRESS
tCPWD
tRAL
tCAH
tCPWD
Row
tCAH
tASC
tAR
Column
tCAH
Column
tASC
Column
tRCS
WE
tAA
tAA
tCAC
tAA
tCAC
tOE
tCAC
tOE
tOE
OE
tRAC
tOED
tCLZ
I/O
tOED
tCLZ
OUT
tOED
tCLZ
OUT
OUT
Don’t Care
Integrated Circuit Solution Inc.
DR005-0C
13
IS41C16105
IS41LV16105
FAST PAGE MODE READ WRITE CYCLE (LATE WRITE and READ-MODIFY-WRITE Cycles)
tRASP
tRP
RAS
tPRWC
tCAS
tCSH
tCAS
tCRP
tRCD
tRSH
tCAS
tCP
tCRP
tCP
UCAS/LCAS
tAR
tRAH
tRAD
tASC
tASR
ADDRESS
tCPWD
tRAL
tCAH
tCPWD
Row
tCAH
tAR
Column
tASC
Column
tCWL
tRWD
tAWD
tCWD
tRCS
tCAH
tASC
Column
tCWL
tRWL
tCWL
tAWD
tCWD
tWP
tAWD
tCWD
tWP
tWP
WE
tAA
tAA
tCAC
tAA
tCAC
tOE
tCAC
tOE
tOE
OE
tOEZ
tOED
tRAC
OUT
IN
tOEZ
tOED
tDH
tDH
tDS tCLZ
tCLZ
I/O0-I/O15
tOEZ
tOED
tDS
OUT
IN
tDH
tCLZ
OUT
tDS
IN
Don’t Care
14
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
FAST PAGE MODE EARLY WRITE CYCLE
tRASP
tRP
RAS
tCAS
tCRP
tRHCP
tRSH
tCAS
tPC
tCAS
tCSH
tRCD
tCP
tCRP
tCP
UCAS/LCAS
tAR
tRAL
tRAD
tRAH
tASC
tASR
ADDRESS
Row
tCAH
tCAH
tAR
Column
tASC
Column
Column
tCWL
tWCS
tWCH
tCAH
tASC
tCWL
tWCH tWCS
tWCS
tWP
tCWL
tWP
tWCH
tWP
WE
tWCR
OE
tDHR
tDS
tDH
tDS
Valid DIN
I/O0-I/O15
tDH
Valid DIN
tDS
tDH
Valid DIN
Don’t Care
AC WAVEFORMS
4)5
4)5-ONLY REFRESH CYCLE (OE, WE = DON'T CARE)
tRC
tRAS
tRP
RAS
tCRP
tRPC
UCAS/LCAS
tASR
ADDRESS
I/O
tRAH
Row
Row
Open
Don’t Care
Integrated Circuit Solution Inc.
DR005-0C
15
IS41C16105
IS41LV16105
+*4 REFRESH CYCLE (Addresses; WE, OE = DON'T CARE)
tRP
tRAS
tRP
tRAS
RAS
tCHR
tRPC
tCP
tCHR
tRPC
tCSR
tCSR
UCAS/LCAS
Open
I/O
HIDDEN REFRESH CYCLE(1) (WE = HIGH; OE = LOW)
tRAS
tRP
tRAS
RAS
tCRP
tRCD
tASR
tRAD
tRAH tASC
tRSH
tCHR
UCAS/LCAS
tAR
ADDRESS
Row
tRAL
tCAH
Column
tAA
tRAC
tOFF(2)
tCAC
tCLZ
I/O
Open
Valid Data
tOE
Open
tOD
tORD
OE
Don’t Care
Notes:
1. A Hidden Refresh may also be performed after a Write Cycle. In this case, WE = LOW and OE = HIGH.
2. tOFF is referenced from rising edge of RAS or CAS, whichever occurs last.
16
Integrated Circuit Solution Inc.
DR005-0C
IS41C16105
IS41LV16105
ORDERING INFORMATION: 3.3V
Commercial Range: 0°C to 70°C
Speed (ns)
50
60
Order Part No.
Package
IS41LV16105-50K
IS41LV16105-50T
IS41LV16105-60K
IS41LV16105-60T
400mil SOJ
400mil TSOP-2
400mil SOJ
400mil TSOP-2
ORDERING INFORMATION: 3.3V
Industrial Temperature Range: –40°C to 85°C
Speed (ns)
50
60
Order Part No.
Package
IS41LV16105-50KI
IS41LV16105-50TI
IS41LV16105-60KI
IS41LV16105-60TI
400mil SOJ
400mil TSOP-2
400mil SOJ
400mil TSOP-2
ORDERING INFORMATION: 5V
Commercial Range: 0°C to 70°C
Speed (ns)
50
60
Order Part No.
Package
IS41C16105-50K
IS41C16105-50T
IS41C16105-60K
IS41C16105-60T
400mil SOJ
400mil TSOP-2
400mil SOJ
400mil TSOP-2
ORDERING INFORMATION: 5V
Industrial Temperature Range: –40°C to 85°C
Speed (ns)
50
60
Integrated Circuit Solution Inc.
DR005-0C
Order Part No.
Package
IS41C16105-50KI
IS41C16105-50TI
IS41C16105-60KI
IS41C16105-60TI
400mil SOJ
400mil TSOP-2
400mil SOJ
400mil TSOP-2
17
IS41C16105
IS41LV16105
Integrated Circuit Solution Inc.
HEADQUARTER:
NO.2, TECHNOLOGY RD. V, SCIENCE-BASED INDUSTRIAL PARK,
HSIN-CHU, TAIWAN, R.O.C.
TEL: 886-3-5780333
Fax: 886-3-5783000
BRANCH OFFICE:
7F, NO. 106, SEC. 1, HSIN-TAI 5TH ROAD,
HSICHIH TAIPEI COUNTY, TAIWAN, R.O.C.
TEL: 886-2-26962140
FAX: 886-2-26962252
http://www.icsi.com.tw
18
Integrated Circuit Solution Inc.
DR005-0C
Similar pages