IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
NOVEMBER 2013
256K x 72, 512K x 36 and 1M x 18
18Mb, FLOW THROUGH 'NO WAIT' STATE BUS SRAM
FEATURES
DESCRIPTION
• 100 percent bus utilization
The 18 Meg 'NLF/NVF' product family feature high-speed,
low-power synchronous static RAMs designed to provide
a burstable, high-performance, 'no wait' state, device
for networking and communications applications. They
are organized as 256K words by 72 bits, 512K words
by 36 bits and 1M words by 18 bits, fabricated with ISSI's
advanced CMOS technology.
• No wait cycles between Read and Write
• Internal self-timed write cycle
• Individual Byte Write Control
• Single Read/Write control pin
• Clock controlled, registered address,
data and control
• Interleaved or linear burst sequence control using MODE input
• Three chip enables for simple depth expansion
and address pipelining
• Power Down mode
• Common data inputs and data outputs
• CKE pin to enable clock and suspend operation
• JEDEC 100-pin TQFP, 165-ball PBGA and 209ball (x72) PBGA packages
• Power supply:
NVF: Vdd 2.5V (± 5%), Vddq 2.5V (± 5%)
NLF: Vdd 3.3V (± 5%), Vddq 3.3V/2.5V (± 5%)
• JTAG Boundary Scan for PBGA packages
• Industrial temperature available
• Lead-free available
Incorporating a 'no wait' state feature, wait cycles are
eliminated when the bus switches from read to write, or
write to read. This device integrates a 2-bit burst counter,
high-speed SRAM core, and high-drive capability outputs
into a single monolithic circuit.
All synchronous inputs pass through registers are controlled
by a positive-edge-triggered single clock input. Operations
may be suspended and all synchronous inputs ignored
when Clock Enable, CKE is HIGH. In this state the internal
device will hold their previous values.
All Read, Write and Deselect cycles are initiated by the ADV
input. When the ADV is HIGH the internal burst counter
is incremented. New external addresses can be loaded
when ADV is LOW.
Write cycles are internally self-timed and are initiated by
the rising edge of the clock inputs and when WE is LOW.
Separate byte enables allow individual bytes to be written.
A burst mode pin (MODE) defines the order of the burst
sequence.When tied HIGH, the interleaved burst sequence
is selected. When tied LOW, the linear burst sequence is
selected.
FAST ACCESS TIME
Symbol Parameter
tkq
Clock Access Time
tkc
Cycle Time
Frequency
6.5
6.5
7.5
133
7.5
7.5
8.5
117
Units
ns
ns
MHz
Copyright © 2013 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any
published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause
failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written
assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 1
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
BLOCK DIAGRAM
x 72: A [0:17] or
x 36: A [0:18] or
x 18: A [0:19]
ADDRESS
REGISTER
A2-A17 or A2-A18 or A2-A19
MODE
A0-A1
CLK
CONTROL
LOGIC
K
CKE
WRITE
ADDRESS
REGISTER
BURST
ADDRESS
COUNTER
256Kx72; 512Kx36;
1024Kx18
MEMORY ARRAY
A'0-A'1
WRITE
ADDRESS
REGISTER
K
DATA-IN
REGISTER
K
DATA-IN
REGISTER
CE
CE2
CE2
ADV
WE
BWŸX
}
CONTROL
REGISTER
K
CONTROL
LOGIC
(X=a-h, a-d, or a,b)
BUFFER
OE
ZZ
72, 36 or 18
DQx/DQPx
2
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Bottom View
165-Ball, 13 mm x 15mm BGA
Bottom View
209-Ball, 14 mm x 22 mm BGA
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 3
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Pin Configuration — 256K x 72, 209-Ball PBGA (Top View)
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
1
DQg
DQg
DQg
DQg
DQPg
DQc
DQc
DQc
DQc
NC
DQh
DQh
DQh
DQh
DQPd
DQd
DQd
DQd
DQd
2
DQg
DQg
DQg
DQg
DQPc
DQc
DQc
DQc
DQc
NC
DQh
DQh
DQh
DQh
DQPh
DQd
DQd
DQd
DQd
3
A
BWc
BWh
VSS
Vddq
VSS
Vddq
VSS
Vddq
CLK
Vddq
VSS
Vddq
VSS
Vddq
VSS
NC
A
TMS
4
CE2
BWg
BWd
NC
Vddq
VSS
Vddq
VSS
Vddq
NC
Vddq
VSS
Vddq
VSS
Vddq
NC
A
A
TDI
5
A
NC
NC
NC
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
NC
NC
A
A
6
ADV
WE
CE
OE
Vdd
NC
NC
NC
NC
CKE
NC
NC
NC
ZZ
Vdd
MODE
A
A1
A0
7
A
A
NC
NC
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
VSS
Vdd
NC
NC
A
A
8
CE2
BWb
BWe
NC
Vddq
VSS
Vddq
VSS
Vddq
NC
Vddq
VSS
Vddq
VSS
Vddq
NC
A
A
TDO
9
A
BWf
BWa
VSS
Vddq
VSS
Vddq
VSS
Vddq
NC
Vddq
VSS
Vddq
VSS
Vddq
VSS
NC
A
TCK
10
DQb
DQb
DQb
DQb
DQPf
DQf
DQf
DQf
DQf
NC
DQa
DQa
DQa
DQa
DQPa
DQe
DQe
DQe
DQe
11
DQb
DQb
DQb
DQb
DQPb
DQf
DQf
DQf
DQf
NC
DQa
DQa
DQa
DQa
DQPe
DQe
DQe
DQe
DQe
11 x 19 Ball BGA—14 x 22 mm2 Body—1 mm Ball Pitch
PIN DESCRIPTIONS
Symbol
A
A0, A1
Pin Name
Synchronous Address Inputs
Synchronous Address Inputs. These
pins must tied to the two LSBs of the
address bus.
ADV
Synchronous Burst Address Advance
BWa-BWh
Synchronous Byte Write Enable
CE, CE2, CE2 Synchronous Chip Enable
CLK
Synchronous Clock
CKE
Clock Enable
DQx
Synchronous Data Input/Output
DQPx
Parity Data I/O
4
Vss
MODE
OE
TCK, TDI
TDO, TMS
Vdd
Vddq
WE
ZZ
Ground
Burst Sequence Selection
Output Enable
JTAG Pins
3.3V/2.5V Power Supply
Isolated Output Buffer Supply:
3.3V/2.5V
Write Enable
Snooze Enable
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Pin Configuration — 512K x 36, 165-Ball PBGA (Top View)
1
2
3
4
5
6
7
8
9
10
11
A
NC
A
CE
BWc
BWb
CE2
CKE
ADV
A
A
NC
B
NC
A
CE2
BWd
BWa
CLK
WE
OE
A
A
NC
C
DQPc
NC
Vddq
VSS
VSS
VSS
VSS
VSS
Vddq
NC
DQPb
D
DQc
DQc
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQb
DQb
E
DQc
DQc
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQb
DQb
F
DQc
DQc
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQb
DQb
G
DQc
DQc
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQb
DQb
H
NC
VDD
NC
Vdd
VSS
VSS
VSS
Vdd
NC
NC
ZZ
J
DQd
DQd
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQa
DQa
K
DQd
DQd
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQa
DQa
L
DQd
DQd
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQa
DQa
M
DQd
DQd
Vddq
Vdd
VSS
VSS
VSS
Vdd
Vddq
DQa
DQa
N
DQPd
NC
Vddq
VSS
NC
NC
NC
VSS
Vddq
NC
DQPa
P
NC
NC
A
A
TDI
A1*
TDO
A
A
A
NC
R
MODE
NC
A
A
TMS
A0*
TCK
A
A
A
A
Note: A0 and A1 are the two least significant bits (LSB) of the address field and set the internal burst counter if burst is desired.
PIN DESCRIPTIONS
Symbol
A
A0, A1
ADV
WE
CLK
CKE
CE
CE2
CE2
BWx (x=a-d)
Pin Name
Address Inputs
Synchronous Burst Address Inputs
Synchronous Burst Address Advance/
Load
Synchronous Read/Write Control
Input
Synchronous Clock
Clock Enable
Synchronous Chip Select
Synchronous Chip Select
Synchronous Chip Select
Synchronous Byte Write Inputs
Symbol
OE
ZZ
Pin Name
Output Enable
Power Sleep Mode
MODE
TCK, TDI
TDO, TMS
VDD
NC
DQx
DQPx
VDDQ
Burst Sequence Selection
JTAG Pins
Vss
3.3V/2.5V Power Supply
No Connect
Data Inputs/Outputs
Parity Data I/O
Isolated output Power Supply
3.3V/2.5V
Ground
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 5
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
165-PIN PBGA PACKAGE CONFIGURATION
1024K x 18 (TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
A
NC
A
BWb
NC
CE2
CKE
ADV
A
NC
A
NC
NC
VDDQ
BWa
Vss
CLK
Vss
WE
Vss
VDDQ
NC
NC
DQPa
D
NC
DQb
VDDQ
VDD
Vss
Vss
Vss
OE
Vss
VDD
A
C
NC
Vss
A
A
A
B
CE
CE2
VDDQ
NC
DQa
E
NC
DQb
VDDQ
VDD
Vss
Vss
Vss
VDD
VDDQ
NC
DQa
F
NC
DQb
VDDQ
VDD
Vss
Vss
Vss
VDD
VDDQ
NC
DQa
G
NC
DQb
VDDQ
Vss
NC
NC
NC
ZZ
J
DQb
NC
VDDQ
VDD
Vss
Vss
VDD
VDD
DQa
VDD
Vss
Vss
NC
NC
Vss
Vss
VDDQ
H
VDD
VDD
Vss
Vss
VDD
VDDQ
DQa
NC
K
DQb
NC
VDDQ
VDD
Vss
Vss
Vss
VDD
VDDQ
DQa
L
DQb
NC
VDDQ
VDD
Vss
Vss
VDD
VDDQ
DQa
M
DQb
NC
VDDQ
VDD
Vss
Vss
Vss
NC
NC
Vss
VDD
VDDQ
DQa
NC
N
DQPb
NC
Vss
NC
TDO
A
A
NC
R
MODE
NC
A
A
TMS
A1*
A0*
VDDQ
A
NC
NC
NC
TDI
NC
NC
Vss
A
NC
P
VDDQ
A
TCK
A
A
A
A
Note: A0 and A1 are the two least significant bits (LSB) of the address field and set the internal burst counter if burst is desired.
PIN DESCRIPTIONS
Symbol
A
A0, A1
ADV
WE
CLK
CKE
CE
CE2
CE2
BWx (x=a,b)
OE
ZZ
6
Pin Name
Address Inputs
Synchronous Burst Address Inputs
Synchronous Burst Address Advance/
Load
Synchronous Read/Write Control
Input
Synchronous Clock
Clock Enable
Synchronous Chip Select
Synchronous Chip Select
Synchronous Chip Select
Synchronous Byte Write Inputs
Output Enable
Power Sleep Mode
MODE
TCK, TDI
TDO, TMS
VDD
NC
DQx
DQPx
VDDQ
Vss
Burst Sequence Selection
JTAG Pins
3.3V/2.5V Power Supply
No Connect
Data Inputs/Outputs
Parity Data I/O
Isolated output Power Supply
3.3V/2.5V
Ground
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
PIN CONFIGURATION
DQb
DQb
DQb
Vss
NC
VDD
ZZ
DQb
NC
VDD
DQa
DQb
DQa
DQb
VDDQ
VDDQ
NC
Vss
DQa
Vss
DQb
DQa
DQb
DQa
DQa
Vss
DQPb
NC
VDDQ
VDDQ
DQa
DQa
DQPa
NC
NC
NC
Vss
Vss
A
A
A
ADV
A
OE
CKE
CLK
WE
CE2
VDD
Vss
BWa
NC
BWb
NC
CE2
CE
512K x 36
A
NC
NC
VDDQ
Vss
NC
DQPa
DQa
DQa
Vss
VDDQ
DQa
DQa
Vss
NC
VDD
ZZ
DQa
DQa
VDDQ
Vss
DQa
DQa
NC
NC
Vss
VDDQ
NC
NC
NC
A
A
VDDQ
VDDQ
A
Vss
Vss
A
DQb
A
DQb
A
DQb
DQb
NC
A
NC
NC
NC
DQb
DQb
VDD
Vss
Vss
Vss
NC
NC
VDDQ
A
A
A
ADV
A
OE
CKE
CLK
WE
CE2
VDD
Vss
BWa
BWc
BWb
BWd
CE2
CE
A
A
VDDQ
A1
A0
MODE
DQd
DQd
DQPd
NC
A
VDDQ
DQb
A
DQd
DQd
Vss
NC
A
DQd
DQb
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
80
2
79
3
78
4
77
5
76
6
75
7
74
8
73
9
72
10
71
11
70
12
69
13
68
14
67
15
66
16
65
17
64
18
63
19
62
20
61
21
60
22
59
23
58
24
57
25
56
26
55
27
54
28
53
29
52
30
51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
A
Vss
DQd
NC
MODE
VDDQ
DQPb
A
A
DQd
A
DQd
A
NC
Vss
A
DQc
NC
VDD
A
DQc
NC
A
VDDQ
NC
Vss
VDD
DQc
Vss
DQc
NC
NC
DQc
DQc
A1
A0
Vss
A
VDDQ
A
DQc
A
DQc
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
80
2
79
3
78
4
77
5
76
6
75
7
74
8
73
9
72
10
71
11
70
12
69
13
68
14
67
15
66
16
65
17
64
18
63
19
62
20
61
21
60
22
59
23
58
24
57
25
56
26
55
27
54
28
53
29
52
30
51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
A
DQPc
A
A
100-Pin TQFP
1M x 18
PIN DESCRIPTIONS
A0, A1
A
CLK
ADV
BWa-BWd
WE
CKE
Vss
NC
Synchronous Address Inputs. These
pins must tied to the two LSBs of the
address bus.
Synchronous Address Inputs
Synchronous Clock
Synchronous Burst Address Advance
Synchronous Byte Write Enable
Write Enable
Clock Enable
Ground for Core
Not Connected
CE, CE2, CE2
OE
DQa-DQd
DQPa-DQPd
MODE
Vdd
Vss
Vddq
ZZ
Synchronous Chip Enable
Output Enable
Synchronous Data Input/Output
Parity Data I/O
Burst Sequence Selection
+3.3V/2.5V Power Supply
Ground for output Buffer
Isolated Output Buffer Supply: +3.3V/2.5V
Snooze Enable
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 7
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
STATE DIAGRAM
READ
READ
READ
BURST
WRITE
BEGIN
READ
DS
DS
READ
WRITE
DESELECT
BURST
BURST
READ
BEGIN
WRITE
BURST
DS
BURST
DS
DS
WRITE
READ
BURST
WRITE
WRITE
WRITE
BURST
SYNCHRONOUS TRUTH TABLE(1)
Address
Operation Used
CE CE2 CE2
Not Selected
N/A
H
X
X
Not Selected
N/A
X
L
X
Not Selected
N/A
X
X
H
Not Selected Continue
N/A
X
X
X
Begin Burst Read
External Address
L
H
L
Continue Burst Read
Next Address
X
X
X
NOP/Dummy Read
External Address
L
H
L
Dummy Read
Next Address
X
X
X
Begin Burst Write
External Address
L
H
L
Continue Burst Write
Next Address
X
X
X
NOP/Write Abort
N/A
L
H
L
Write Abort
Next Address
X
X
X
Ignore Clock
Current Address
X
X
X
Notes:
ADV WE
L
X
L
X
L
X
H
X
L
H
H
X
L
H
H
X
L
L
H
X
L
L
H
X
X
X
BWx
X
X
X
X
X
X
X
X
L
L
H
H
X
OE
X
X
X
X
L
L
H
H
X
X
X
X
X
CKE
L
L
L
L
L
L
L
L
L
L
L
L
H
CLK
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
1. "X" means don't care.
2. The rising edge of clock is symbolized by ↑
3. A continue deselect cycle can only be entered if a deselect cycle is executed first.
4. WE = L means Write operation in Write Truth Table.
WE = H means Read operation in Write Truth Table.
5. Operation finally depends on status of asynchronous pins (ZZ and OE).
8
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
ASYNCHRONOUS TRUTH TABLE(1)
Operation ZZ
OE
Sleep Mode
H
X
Read
L
L
L
H
Write
L
X
Deselected
L
X
Notes:
I/O STATUS
High-Z
DQ
High-Z
Din, High-Z
High-Z
1. X means "Don't Care".
2. For write cycles following read cycles, the output buffers must be disabled with OE, otherwise data
bus contention will occur.
3. Sleep Mode means power Sleep Mode where stand-by current does not depend on cycle time.
4. Deselected means power Sleep Mode where stand-by current depends on cycle time.
WRITE TRUTH TABLE (x18)
Operation
READ
WRITE BYTE a
WRITE BYTE b
WRITE ALL BYTEs
WRITE ABORT/NOP
Notes:
WE BWa BWb
H
X
X
L
L
H
L
H
L
L
L
L
L
H
H
1. X means "Don't Care".
2. All inputs in this table must beet setup and hold time around the rising edge of CLK.
WRITE TRUTH TABLE (x36)
Operation
READ
WRITE BYTE a
WRITE BYTE b
WRITE BYTE c
WRITE BYTE d
WRITE ALL BYTEs
WRITE ABORT/NOP
Notes:
WE BWa BWb BWc BWd
H
X
X
X
X
L
L
H
H
H
L
H
L
H
H
L
H
H
L
H
L
H
H
H
L
L
L
L
L
L
L
H
H
H
H
1. X means "Don't Care".
2. All inputs in this table must beet setup and hold time around the rising edge of CLK.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
9
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
WRITE TRUTH TABLE (x72)
Operation
READ
WRITE BYTE a
WRITE BYTE b
WRITE BYTE c
WRITE BYTE d
WRITE BYTE e
WRITE BYTE f
WRITE BYTE g
WRITE BYTE h
WRITE ALL BYTEs
WRITE ABORT/NOP
Notes:
WE
H
L
L
L
L
L
L
L
L
L
L
BWa
X
L
H
H
H
H
H
H
H
L
H
BWb
X
H
L
H
H
H
H
H
H
L
H
BWc
X
H
H
L
H
H
H
H
H
L
H
BWd
X
H
H
H
L
H
H
H
H
L
H
BWe
X
H
H
H
H
L
H
H
H
L
H
BWf
X
H
H
H
H
H
L
H
H
L
H
BWg
X
H
H
H
H
H
H
L
H
L
H
BWh
X
H
H
H
H
H
H
H
L
L
H
1. X means "Don't Care".
2. All inputs in this table must beet setup and hold time around the rising edge of CLK.
INTERLEAVED BURST ADDRESS TABLE (MODE = Vdd or NC)
External Address
1st Burst Address
2nd Burst Address
3rd Burst Address
A1 A0
A1 A0
A1 A0
A1 A0
00 01 10 11
01 00 11 10
10 11 00 01
11 10 01 00
10
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Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
LINEAR BURST ADDRESS TABLE (MODE = Vss)
0,0
A1', A0' = 1,1
0,1
1,0
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Tstg
Pd
Iout
Vin, Vout
Vin
Parameter
Value
Storage Temperature
–65 to +150
Power Dissipation
1.6
Output Current (per I/O)
100
Voltage Relative to Vss for I/O Pins
–0.5 to Vddq + 0.5
Voltage Relative to Vss for
–0.5 to 4.6
for Address and Control Inputs
Unit
°C
W
mA
V
V
Notes:
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.
2. This device contains circuity to protect the inputs against damage due to high static voltages or electric fields; however, precautions may be taken to avoid application of any voltage higher than maximum rated voltages to this high-impedance circuit.
3. This device contains circuitry that will ensure the output devices are in High-Z at power up.
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Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
OPERATING RANGE (IS61NLFx)
Range
Commercial
Industrial
Ambient Temperature
0°C to +70°C
-40°C to +85°C
Vdd
3.3V ± 5%
3.3V ± 5%
Vddq
3.3V / 2.5V ± 5%
3.3V / 2.5V ± 5%
Vdd
2.5V ± 5%
2.5V ± 5%
Vddq
2.5V ± 5%
2.5V ± 5%
OPERATING RANGE (IS61NVFx)
Range
Commercial
Industrial
Ambient Temperature
0°C to +70°C
-40°C to +85°C
DC ELECTRICAL CHARACTERISTICS (Over Operating Range)
Symbol
Parameter
Voh
Output HIGH Voltage
Vol
Output LOW Voltage
Vih(1)
Input HIGH Voltage
Vil(1)
Input LOW Voltage
Ili
Input Leakage Current
Ilo
Output Leakage Current
3.3V 2.5V
Test Conditions
Min. Max. Min. Max.
Ioh = –4.0 mA (3.3V)
2.4
—
2.0
—
Ioh = –1.0 mA (2.5V)
Iol = 8.0 mA (3.3V)
—
0.4
—
0.4
Iol = 1.0 mA (2.5V)
2.0
Vdd + 0.3 1.7
Vdd + 0.3
–0.3
0.8
–0.3
0.7
(2)
Vss ≤ Vin ≤ Vdd
–5
5
–5
5
Vss ≤ Vout ≤ Vddq, OE = Vih
–5
5
–5
5
Unit
V
V
V
V
µA
µA
Note:
1. Overshoot: Vih (AC) < Vdd + 2.0V (Pulse width less than tkc/2). Undershoot: Vil (AC) > -2V (Pulse width less than tkc/2).
2. MODE pin has an internal pullup and should be tied to Vdd or Vss. It exhibits ±100 µA maximum leakage current when tied to ≤
Vss + 0.2V or ≥ Vdd – 0.2V.
POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)
6.5 7.5
MAX MAX
Symbol Parameter
Test Conditions
Temp. range
x18 x36 x72 x18 x36 x72 Unit
Icc
AC Operating
Device Selected,
Com. 450
450
600
425
425
550
mA
Supply Current
OE = Vih, ZZ ≤ Vil,
Ind.
500
500
650
475
475
600
All Inputs ≤ 0.2V or ≥ Vdd – 0.2V,
Cycle Time ≥ tkc min.
Isb
Standby Current
Device Deselected,
Com. 150
150
150
150
150
150 mA
TTL Input
Vdd = Max.,
Ind.
150 150 150 150 150 150
All Inputs ≤ Vil or ≥ Vih,
ZZ ≤ Vil, f = Max.
Isbi
Standby Current
Device Deselected,
Com. 110
110
110
110
110
110
mA
CMOS Input
Vdd = Max.,
Ind.
125 125 125 125 125 125
Vin ≤ Vss + 0.2V or ≥ Vdd – 0.2V
f=0
Isb2
Sleep Mode
ZZ > Vih
Com.
60
60
60
60
60
60
mA
Ind.
75 75 75 75 75 75
Note:
1. MODE pin has an internal pullup and should be tied to Vdd or Vss. It exhibits ±100 µA maximum leakage current when tied to ≤
Vss + 0.2V or ≥ Vdd – 0.2V.
12
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Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
CAPACITANCE(1,2)
Symbol
Cin
Cout
Parameter
Input Capacitance
Input/Output Capacitance
Conditions
Vin = 0V
Vout = 0V
Max.
6
8
Unit
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, Vdd = 3.3V.
3.3V I/O AC TEST CONDITIONS
Parameter
Input Pulse Level
Input Rise and Fall Times
Input and Output Timing
and Reference Level
Output Load
Unit
0V to 3.0V
1.5 ns
1.5V
See Figures 1 and 2
3.3V I/O OUTPUT LOAD EQUIVALENT
317 Ω
+3.3V
Zo= 50Ω
OUTPUT
OUTPUT
50Ω
5 pF
Including
jig and
scope
351 Ω
1.5V
Figure 1
Figure 2
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Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
2.5V I/O AC TEST CONDITIONS
Parameter
Input Pulse Level
Input Rise and Fall Times
Input and Output Timing
and Reference Level
Output Load
Unit
0V to 2.5V
1.5 ns
1.25V
See Figures 3 and 4
2.5V I/O OUTPUT LOAD EQUIVALENT
1,667 Ω
+2.5V
ZO = 50Ω
OUTPUT
OUTPUT
50Ω
5 pF
Including
jig and
scope
1,538 Ω
1.25V
Figure 3
14
Figure 4
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
READ/WRITE CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)
Parameter
Clock Frequency
Cycle Time
Clock High Time
Clock Low Time
Clock Access Time
Clock High to Output Invalid
Clock High to Output Low-Z
Clock High to Output High-Z
Output Enable to Output Valid
Output Enable to Output Low-Z
6.5
Min. Max.
—
133
7.5
—
2.2
—
2.2
—
—
6.5
2.5
—
2.5
—
—
3.8
—
3.2
0
—
7.5
Min. Max.
— 117
8.5 —
2.5 —
2.5 —
— 7.5
2.5 —
2.5 —
— 4.0
— 3.4
0
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
Output Disable to Output High-Z
Address Setup Time
Read/Write Setup Time
Chip Enable Setup Time
Clock Enable Setup Time
Address Advance Setup Time
Data Setup Time
Address Hold Time
Clock Enable Hold Time
Write Hold Time
Chip Enable Hold Time
Address Advance Hold Time
Data Hold Time
ZZ High to Power Down
ZZ Low to Power Down
—
1.5
1.5
1.5
1.5
1.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
—
—
— 3.5
1.5 —
1.5 —
1.5 —
1.5 —
1.5 —
1.5 —
0.5 —
0.5 —
0.5 —
0.5 —
0.5 —
0.5 —
—
2
—
2
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
cyc
cyc
Symbol
fmax
tkc
tkh
tkl
tkq
tkqx(2)
tkqlz(2,3)
tkqhz(2,3)
toeq
toelz(2,3)
toehz(2,3)
tas
tws
tces
tse
tadvs
tds
tah
the
twh
tceh
tadvh
tdh
tpds
tpus
Notes:
3.5
—
—
—
—
—
—
—
—
—
—
—
—
2
2
1. Configuration signal MODE is static and must not change during normal operation.
2. Guaranteed but not 100% tested. This parameter is periodically sampled.
3. Tested with load in Figure 2.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 15
Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
SLEEP MODE ELECTRICAL CHARACTERISTICS
Symbol Parameter
Conditions
Min.
Max.
Isb2
Current during SLEEP MODE
ZZ ≥ Vih
60
tpds
ZZ active to input ignored
2
tpus
ZZ inactive to input sampled
2
tzzi
ZZ active to SLEEP current
2
trzzi
ZZ inactive to exit SLEEP current
0
Unit
mA
cycle
cycle
cycle
ns
SLEEP MODE TIMING
CLK
tPDS
ZZ setup cycle
tPUS
ZZ recovery cycle
ZZ
tZZI
Isupply
ISB2
tRZZI
All Inputs
(except ZZ)
Deselect or Read Only
Deselect or Read Only
Normal
operation
cycle
Outputs
(Q)
High-Z
Don't Care
16
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Rev. E
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IS61NLF25672/IS61NVF25672
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IS61NLF102418/IS61NVF102418
READ CYCLE TIMING
tKH tKL
CLK
tKC
tADVS tADVH
ADV
tAS tAH
Address
A1
A3
A2
tWS tWH
WRITE
tSE tHE
CKE
tCES tCEH
CE
OE
tOEQ
tOEHZ
Data Out
Q1-1
tOEHZ
tKQX
Q2-1
tKQ
Q2-2
tKQHZ
Q2-3
NOTES: WRITE = L means WE = L and BWx = L
WE = L and BWX = L
CE = L means CE1 = L, CE2 = H and CE2 = L
CE = H means CE1 = H, or CE1 = L and CE2 = H, or CE1 = L and CE2 = L
Q2-4
Q3-1
Q3-2
Q3-3
Q3-4
Don't Care
Undefined
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Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
WRITE CYCLE TIMING
tKH tKL
CLK
tKC
ADV
Address
A1
A3
A2
WRITE
tSE tHE
CKE
CE
OE
tDS
Data In
D1-1
D2-1
D2-2
D2-3
D2-4
D3-1
tDH
D3-2
D3-3
D3-4
tOEHZ
Data Out
Q0-4
NOTES: WRITE = L means WE = L and BWx = L
WE = L and BWX = L
CE = L means CE1 = L, CE2 = H and CE2 = L
CE = H means CE1 = H, or CE1 = L and CE2 = H, or CE1 = L and CE2 = L
18
Don't Care
Undefined
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Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
SINGLE READ/WRITE CYCLE TIMING
tKH
tKL
CLK
tSE tHE
tKC
CKE
Address
A1
A2
A3
A4
A5
A6
A7
A8
A9
WRITE
CE
ADV
OE
tOEQ
Data Out
tOELZ
Q1
Q3
Q4
Q6
Q7
tDS tDH
Data In
D2
D5
NOTES: WRITE = L means WE = L and BWx = L
CE = L means CE1 = L, CE2 = H and CE2 = L
CE = H means CE1 = H, or CE1 = L and CE2 = H, or CE1 = L and CE2 = L
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Rev. E
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Don't Care
Undefined
19
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
CKE OPERATION TIMING
tKH
tKL
CLK
tSE tHE
tKC
CKE
Address
A1
A2
A3
A4
A5
A6
WRITE
CE
ADV
OE
tKQ
Data Out
tKQLZ
tKQHZ
Q1
Q3
Q4
tDS tDH
Data In
D2
NOTES: WRITE = L means WE = L and BWx = L
CE = L means CE1 = L, CE2 = H and CE2 = L
CE = H means CE1 = H, or CE1 = L and CE2 = H, or CE1 = L and CE2 = L
20
D5
Don't Care
Undefined
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Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
CE OPERATION TIMING
tKH
tKL
CLK
tSE tHE
tKC
CKE
Address
A1
A2
A3
A4
A5
WRITE
CE
ADV
OE
tOEQ
Data Out
tOELZ
tKQHZ
Q1
tKQ
tKQLZ
Q2
Q4
tDS tDH
Data In
D3
NOTES: WRITE = L means WE = L and BWx = L
CE = L means CE1 = L, CE2 = H and CE2 = L
CE = H means CE1 = H, or CE1 = L and CE2 = H, or CE1 = L and CE2 = L
D5
Don't Care
Undefined
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Rev. E
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IS61NLF25672/IS61NVF25672
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IS61NLF102418/IS61NVF102418
IEEE 1149.1 Serial Boundary Scan (JTAG)
Test Access Port (TAP) - Test Clock
The IS61NLFX and IS61NVFX have a serial boundary
scan Test Access Port (TAP) in the PBGA package only.
(Not available in TQFP package.) This port operates in
accordance with IEEE Standard 1149.1-1900, but does not
include all functions required for full 1149.1 compliance.
These functions from the IEEE specification are excluded
because they place added delay in the critical speed path
of the SRAM. The TAP controller operates in a manner that
does not conflict with the performance of other devices using 1149.1 fully compliant TAPs. The TAP operates using
JEDEC standard 2.5V I/O logic levels.
The test clock is only used with the TAP controller. All inputs
are captured on the rising edge of TCK and outputs are
driven from the falling edge of TCK.
Disabling the JTAG Feature
The SRAM can operate without using the JTAG feature.
To disable the TAP controller, TCK must be tied LOW
(Vss) to prevent clocking of the device. TDI and TMS are
internally pulled up and may be disconnected. They may
alternately be connected to Vdd through a pull-up resistor.
TDO should be left disconnected. On power-up, the device
will start in a reset state which will not interfere with the
device operation.
Test Mode Select (TMS)
The TMS input is used to send commands to the TAP
controller and is sampled on the rising edge of TCK. This
pin may be left disconnected if the TAP is not used. The
pin is internally pulled up, resulting in a logic HIGH level.
Test Data-In (TDI)
The TDI pin is used to serially input information to the
registers and can be connected to the input of any register. The register between TDI and TDO is chosen by the
instruction loaded into the TAP instruction register. For
information on instruction register loading, see the TAP
Controller State Diagram. TDI is internally pulled up and
can be disconnected if the TAP is unused in an application. TDI is connected to the Most Significant Bit (MSB)
on any register.
tap controller block diagram
0
Bypass Register
2
1
0
Instruction Register
TDI
Selection Circuitry
31 30 29
. . .
Selection Circuitry
2
1
0
2
1
0
TDO
Identification Register
x
. . . . .
Boundary Scan Register*
TCK
TMS
22
TAP CONTROLLER
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IS61NLF25672/IS61NVF25672
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IS61NLF102418/IS61NVF102418
Test Data Out (TDO)
Boundary Scan Register
The TDO output pin is used to serially clock data-out from
the registers. The output is active depending on the current
state of the TAP state machine (see TAP Controller State
Diagram). The output changes on the falling edge of TCK
and TDO is connected to the Least Significant Bit (LSB)
of any register.
The boundary scan register is connected to all input and
output pins on the SRAM. Several no connect (NC) pins are
also included in the scan register to reserve pins for higher
density devices. The x36 configuration has a 75-bit-long
register and the x18 configuration also has a 75-bit-long
register. The boundary scan register is loaded with the
contents of the RAM Input and Output ring when the TAP
controller is in the Capture-DR state and then placed between the TDI and TDO pins when the controller is moved
to the Shift-DR state. The EXTEST, SAMPLE/PRELOAD
and SAMPLE-Z instructions can be used to capture the
contents of the Input and Output ring.
The Boundary Scan Order tables show the order in which
the bits are connected. Each bit corresponds to one of the
bumps on the SRAM package. The MSB of the register
is connected to TDI, and the LSB is connected to TDO.
Performing a TAP Reset
A Reset is performed by forcing TMS HIGH (Vdd) for five
rising edges of TCK. RESET may be performed while the
SRAM is operating and does not affect its operation. At
power-up, the TAP is internally reset to ensure that TDO
comes up in a high-Z state.
TAP Registers
Registers are connected between the TDI and TDO pins
and allow data to be scanned into and out of the SRAM
test circuitry. Only one register can be selected at a time
through the instruction registers. Data is serially loaded
into the TDI pin on the rising edge of TCK and output on
the TDO pin on the falling edge of TCK.
Instruction Register
Three-bit instructions can be serially loaded into the instruction register. This register is loaded when it is placed
between the TDI and TDO pins. (See TAP Controller Block
Diagram) At power-up, the instruction register is loaded
with the IDCODE instruction. It is also loaded with the
IDCODE instruction if the controller is placed in a reset
state as previously described.
When the TAP controller is in the CaptureIR state, the two
least significant bits are loaded with a binary “01” pattern
to allow for fault isolation of the board level serial test path.
Bypass Register
To save time when serially shifting data through registers,
it is sometimes advantageous to skip certain states. The
bypass register is a single-bit register that can be placed
between TDI and TDO pins. This allows data to be shifted
through the SRAM with minimal delay. The bypass register
is set LOW (Vss) when the BYPASS instruction is executed.
Scan Register Sizes
Register
Bit Size
Bit Size
Bit Size
Name
(x18) (x36) (x72)
Instruction 3 3 3
Bypass
1
1
1
ID
32 32 32
Boundary Scan
75
75
TBD
Identification (ID) Register
The ID register is loaded with a vendor-specific, 32-bit
code during the Capture-DR state when the IDCODE command is loaded to the instruction register. The IDCODE
is hardwired into the SRAM and can be shifted out when
the TAP controller is in the Shift-DR state. The ID register
has vendor code and other information described in the
Identification Register Definitions table.
Identification Register Definitions
Instruction Field
Revision Number (31:28)
Device Depth (27:23)
Device Width (22:18)
ISSI Device ID (17:12)
ISSI JEDEC ID (11:1)
ID Register Presence (0)
Description
Reserved for version number.
Defines depth of SRAM. 512K or 1M
Defines Width of the SRAM. x72, x36 or x18
Reserved for future use.
Allows unique identification of SRAM vendor.
Indicate the presence of an ID register.
256K x 72
xxxx
00110
00101
xxxx
0011010101
1
512K x 36
xxxx
00111
00100
xxxxx
00011010101
1
1M x 18
xxxx
01000
00011
xxxxx
00011010101
1
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 23
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
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IS61NLF102418/IS61NVF102418
TAP Instruction Set
SAMPLE/PRELOAD
Eight instructions are possible with the three-bit instruction
register and all combinations are listed in the Instruction
Code table. Three instructions are listed as RESERVED
and should not be used and the other five instructions are
described below. The TAP controller used in this SRAM
is not fully compliant with the 1149.1 convention because
some mandatory instructions are not fully implemented.
The TAP controller cannot be used to load address, data or
control signals and cannot preload the Input or Output buffers. The SRAM does not implement the 1149.1 commands
EXTEST or INTEST or the PRELOAD portion of SAMPLE/
PRELOAD; instead it performs a capture of the Inputs and
Output ring when these instructions are executed. Instructions are loaded into the TAP controller during the Shift-IR
state when the instruction register is placed between TDI
and TDO. During this state, instructions are shifted from
the instruction register through the TDI and TDO pins. To
execute an instruction once it is shifted in, the TAP controller must be moved into the Update-IR state.
SAMPLE/PRELOAD is a 1149.1 mandatory instruction.The
PRELOAD portion of this instruction is not implemented, so
the TAP controller is not fully 1149.1 compliant. When the
SAMPLE/PRELOAD instruction is loaded to the instruction register and the TAP controller is in the Capture-DR
state, a snapshot of data on the inputs and output pins is
captured in the boundary scan register.
It is important to realize that the TAP controller clock operates at a frequency up to 10 MHz, while the SRAM clock
runs more than an order of magnitude faster. Because of
the clock frequency differences, it is possible that during
the Capture-DR state, an input or output will under-go a
transition. The TAP may attempt a signal capture while in
transition (metastable state).The device will not be harmed,
but there is no guarantee of the value that will be captured
or repeatable results.
To guarantee that the boundary scan register will capture
the correct signal value, the SRAM signal must be stabilized
long enough to meet the TAP controller’s capture set-up
plus hold times (tcs and tch). To insure that the SRAM clock
input is captured correctly, designs need a way to stop (or
slow) the clock during a SAMPLE/PRELOAD instruction.
If this is not an issue, it is possible to capture all other
signals and simply ignore the value of the CLK captured
in the boundary scan register.
Once the data is captured, it is possible to shift out the data
by putting the TAP into the Shift-DR state. This places the
boundary scan register between the TDI and TDO pins.
Note that since the PRELOAD part of the command is not
implemented, putting the TAP into the Update to the UpdateDR state while performing a SAMPLE/PRELOAD instruction
will have the same effect as the Pause-DR command.
EXTEST
EXTEST is a mandatory 1149.1 instruction which is to be
executed whenever the instruction register is loaded with
all 0s. Because EXTEST is not implemented in the TAP
controller, this device is not 1149.1 standard compliant.
The TAP controller recognizes an all-0 instruction. When an
EXTEST instruction is loaded into the instruction register,
the SRAM responds as if a SAMPLE/PRELOAD instruction
has been loaded. There is a difference between the instructions, unlike the SAMPLE/PRELOAD instruction, EXTEST
places the SRAM outputs in a High-Z state.
IDCODE
The IDCODE instruction causes a vendor-specific, 32bit code to be loaded into the instruction register. It also
places the instruction register between the TDI and TDO
pins and allows the IDCODE to be shifted out of the device
when the TAP controller enters the Shift-DR state. The
IDCODE instruction is loaded into the instruction register
upon power-up or whenever the TAP controller is given a
test logic reset state.
Bypass
When the BYPASS instruction is loaded in the instruction register and the TAP is placed in a Shift-DR state,
the bypass register is placed between the TDI and TDO
pins. The advantage of the BYPASS instruction is that it
shortens the boundary scan path when multiple devices
are connected together on a board.
SAMPLE-Z
Reserved
The SAMPLE-Z instruction causes the boundary scan
register to be connected between the TDI and TDO pins
when the TAP controller is in a Shift-DR state. It also places
all SRAM outputs into a High-Z state.
These instructions are not implemented but are reserved
for future use. Do not use these instructions.
24
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Instruction Codes
Code Instruction Description
000
EXTEST
Captures the Input/Output ring contents. Places the boundary scan register between the TDI and TDO. Forces all SRAM outputs to High-Z state. This
instruction is not 1149.1 compliant.
001
IDCODE
Loads the ID register with the vendor ID code and places the register between TDI
and TDO. This operation does not affect SRAM operation.
010
SAMPLE-Z
Captures the Input/Output contents. Places the boundary scan register between
TDI and TDO. Forces all SRAM output drivers to a High-Z state.
011
RESERVED
Do Not Use: This instruction is reserved for future use.
100
SAMPLE/PRELOAD
Captures the Input/Output ring contents. Places the boundary scan register
between TDI and TDO. Does not affect the SRAM operation. This instruction does not
implement 1149.1 preload function and is therefore not 1149.1 compliant.
101
RESERVED
Do Not Use: This instruction is reserved for future use.
110
RESERVED
Do Not Use: This instruction is reserved for future use.
111
BYPASS
Places the bypass register between TDI and TDO. This operation does not
affect SRAM operation.
TAP CONTROLLER STATE DIAGRAM
Test Logic Reset
1
0
Run Test/Idle
1
Select DR
0
0
1
1
1
Capture DR
0
Shift DR
1
Exit1 DR
0
Select IR
0
1
Exit1 IR
0
Pause DR
0
1
0
1
Exit2 DR
1
Update DR
0
Capture IR
0
Shift IR
1
0
Pause IR
1
0
1
1
0
1
0
Exit2 IR
1
Update IR
0
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 25
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
TAP Electrical Characteristics Over the Operating Range(1,2)
Symbol
Voh1
Voh2
Vol1
Vol2
Vih
Vil
Ix
Notes:
Parameter
Test Conditions
Min.
Max.
Output HIGH Voltage
Ioh = –2.0 mA
1.7
—
Output HIGH Voltage
Ioh = –100 µA
2.1
—
Output LOW Voltage
Iol = 2.0 mA
—
0.7
Output LOW Voltage
Iol = 100 µA
—
0.2
Input HIGH Voltage
1.7
Vdd +0.3
Input LOW Voltage
–0.3
0.7
Input Leakage Current
Vss ≤ V I ≤ Vddq
–10
10
Units
V
V
V
V
V
V
µA
1. All Voltage referenced to Ground.
2. Overshoot: Vih (AC) ≤ Vdd +1.5V for t ≤ ttcyc/2,
Undershoot: Vil (AC) ≤ 0.5V for t ≤ ttcyc/2,
Power-up: Vih < 2.6V and Vdd < 2.4V and Vddq < 1.4V for t < 200 ms.
TAP AC ELECTRICAL CHARACTERISTICS(1,2) (Over Operating Range)
Symbol Parameter Min. Max. Unit
ttcyc
TCK Clock cycle time
100
—
ns
ftf
TCK Clock frequency
—
10 MHz
tth
TCK Clock HIGH
40
—
ns
ttl
TCK Clock LOW
40
— ns
ttmss
TMS setup to TCK Clock Rise 10
—
ns
ttdis
TDI setup to TCK Clock Rise 10
—
ns
tcs
Capture setup to TCK Rise 10
—
ns
ttmsh
TMS hold after TCK Clock Rise
10
—
ns
ttdih
TDI Hold after Clock Rise
10
—
ns
tch
Capture hold after Clock Rise 10
—
ns
ttdov
TCK LOW to TDO valid
—
20
ns
ttdox
TCK LOW to TDO invalid
0
—
ns
Notes:
1. tcs and tch refer to the set-up and hold time requirements of latching data from the boundary scan register.
2. Test conditions are specified using the load in TAP AC test conditions. tr/tf = 1 ns.
26
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
TAP AC TEST CONDITIONS (2.5V/3.3V)
TAP Output Load Equivalent
Input pulse levels
0 to 2.5V/0 to 3.0V
Input rise and fall times
1ns
Input timing reference levels
1.25V/1.5V
Output reference levels
1.25V/1.5V
Test load termination supply voltage
1.25V/1.5V
Vtrig
1.25V/1.5V
50Ω
Vtrig
TDO
Z0 = 50Ω
20 pF
GND
Tap timing
1
2
tTHTH
3
4
5
6
tTLTH
TCK
tTHTL
tMVTH tTHMX
TMS
tDVTH tTHDX
TDI
tTLOV
TDO
tTLOX
DON'T CARE
UNDEFINED
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 27
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
T
B
D
209 Boundary Scan Order (256K X 72)
28
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
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IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
165 Pbga Boundary Scan Order (x 36)
Signal Bump
Bit # Name ID
1
MODE 1R
2
NC
6N
3
NC
11P
4
A
8P
5
A
8R
6
A
9R
7
A
9P
8
A
10P
9
A
10R
10
A
11R
11
ZZ
11H
12
DQa 11N
13
DQa 11M
14
DQa 11L
15
DQa 11K
16
DQa 11J
17
DQa 10M
18
DQa 10L
19
DQa 10K
20
DQa 10J
Bit #
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Signal Bump
Name
ID
Bit #
DQb
11G
41
DQb
11F
42
DQb
11E
43
DQb
11D
44
DQb
10G
45
DQb
10F
46
DQb
10E
47
DQb
10D
48
DQb
11C
49
NC
11A
50
A
10A
51
A
10B
52
A
9A
53
A
9B
54
ADV
8A
55
OE
8B
56
CKE
7A
57
WE
7B
58
CLK
6B
59
NC
11B
60
Signal Bump
Name
ID
NC
1A
CE2
6A
BWa
5B
BWb
5A
BWc
4A
BWd
4B
CE2
3B
CE
3A
A
2A
A
2B
NC
1B
DQc
1C
DQc
1D
DQc
1E
DQc
1F
DQc
1G
DQc
2D
DQc
2E
DQc
2F
DQc
2G
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
Bit #
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
Signal Bump
Name
ID
DQd
1J
DQd
1K
DQd
1L
DQd
1M
DQd
2J
DQd
2K
DQd
2L
DQd
2M
DQd
1N
A
3P
A
3R
A
4R
A
4P
A1
6P
A0
6R
29
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
165 Pbga Boundary Scan Order (x 18)
Signal Bump
Bit # Name ID
1
MODE 1R
2
NC
6N
3
NC
11P
4
A
8P
5
A
8R
6
A
9R
7
A
9P
8
A
10P
9
A
10R
10
A
11R
11
ZZ
11H
12
NC
11N
13
NC
11M
14
NC
11L
15
NC
11K
16
NC
11J
17
DQa 10M
18
DQa 10L
19
DQa 10K
20
DQa 10J
30
Bit #
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Signal Bump
Name
ID
Bit #
DQa
11G
41
DQa
11F
42
DQa
11E
43
DQa
11D
44
DQa
11C
45
NC
10F
46
NC
10E
47
NC
10D
48
NC
10G
49
A
11A
50
A
10A
51
A
10B
52
A
9A
53
A
9B
54
ADV
8A
55
OE
8B
56
CKE
7A
57
WE
7B
58
CLK
6B
59
NC
11B
60
Signal Bump
Name
ID
NC
1A
CE2
6A
BWa
5B
NC
5A
BWb
4A
NC
4B
CE2
3B
CE
3A
A
2A
A
2B
NC
1B
NC
1C
NC
1D
NC
1E
NC
1F
NC
1G
DQb
2D
DQb
2E
DQb
2F
DQb
2G
Bit #
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
Signal Bump
Name
ID
DQb
1J
DQb
1K
DQb
1L
DQb
1M
DQb
1N
NC
2K
NC
2L
NC
2M
NC
2J
A
3P
A
3R
A
4R
A
4P
A1
6P
A0
6R
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
ORDERING INFORMATION (Vdd = 3.3V/Vddq = 2.5V- 3.3V)
Commercial Range: 0°C to +70°C
Access Time
6.5
7.5
6.5
7.5
Order Part Number Package
512Kx36
IS61NLF51236-6.5TQ
100 TQFP
IS61NLF51236-6.5TQL
100 TQFP
IS61NLF51236-6.5B3
165 PBGA
IS61NLF51236-7.5TQ
100 TQFP
IS61NLF51236-7.5B3
165 PBGA
1Mx18
IS61NLF102418-6.5TQ
100 TQFP
IS61NLF102418-6.5TQL
100 TQFP, Lead-free
IS61NLF102418-6.5B3
165 PBGA
IS61NLF102418-7.5TQ
100 TQFP
IS61NLF102418-7.5B3
165 PBGA
Industrial Range: -40°C to +85°C
Access Time
6.5
7.5
6.5
7.5
6.5
7.5
Order Part Number
256Kx72
IS61NLF25672-6.5B1I
IS61NLF25672-7.5B1I
512Kx36
IS61NLF51236-6.5TQI
IS61NLF51236-6.5B3I
IS61NLF51236-7.5TQI
IS61NLF51236-7.5TQLI
IS61NLF51236-7.5B3I
1Mx18
IS61NLF102418-6.5TQI
IS61NLF102418-6.5B3I
IS61NLF102418-7.5TQI
IS61NLF102418-7.5B3I
Package
209 PBGA
209 PBGA
100 TQFP
165 PBGA
100 TQFP
100 TQFP, Lead-free
165 PBGA
100 TQFP
165 PBGA
100 TQFP
165 PBGA
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 31
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
ORDERING INFORMATION (Vdd = 2.5V /Vddq = 2.5V)
Commercial Range: 0°C to +70°C
Access Time
6.5
7.5
6.5
7.5
Order Part Number Package
512Kx36
IS61NVF51236-6.5TQ
100 TQFP
IS61NVF51236-6.5TQL
100 TQFP, Lead-free
IS61NVF51236-6.5B3
165 PBGA
IS61NVF51236-7.5TQ
100 TQFP
IS61NVF51236-7.5B3
165 PBGA
1Mx18
IS61NVF102418-6.5TQ
100 TQFP
IS61NVF102418-6.5B3
165 PBGA
IS61NVF102418-7.5TQ
100 TQFP
IS61NVF102418-7.5B3
165 PBGA
Industrial Range: -40°C to +85°C
Access Time
6.5
7.5
6.5
7.5
6.5
7.5
32
Order Part Number Package
256Kx72
IS61NVF25672-6.5B1I
209 PBGA
IS61NVF25672-7.5B1I
209 PBGA
512Kx36
IS61NVF51236-6.5TQI
100 TQFP
IS61NVF51236-6.5B3I
165 PBGA
IS61NVF51236-7.5TQI
100 TQFP
IS61NVF51236-7.5B3I
165 PBGA
1Mx18
IS61NVF102418-6.5TQI
100 TQFP
IS61NVF102418-6.5B3I
165 PBGA
IS61NVF102418-7.5TQI
100 TQFP
IS61NVF102418-7.5B3I
165 PBGA
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 33
Rev. E
10/25/2013
34
Package Outline
1. CONTROLLING DIMENSION : MM .
NOTE :
08/28/2008
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. E
10/25/2013
12/10/2007
Package Outline
1. Controlling dimension : mm
NOTE :
IS61NLF25672/IS61NVF25672
IS61NLF51236/IS61NVF51236
IS61NLF102418/IS61NVF102418
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 35
Rev. E
10/25/2013