IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
MAY 2016
256K x 36 and 512K x 18
9Mb, FLOW THROUGH 'NO WAIT' STATE BUS SRAM
FEATURES
DESCRIPTION
• 100 percent bus utilization
The 9 Meg product family features 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 36 bits and 512K 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 QFP, 119-ball BGA, and 165ball BGA packages
• Power supply:
NLF: Vdd 3.3V (± 5%), Vddq 3.3V/2.5V (± 5%)
NVF: Vdd 2.5V (± 5%), Vddq 2.5V (± 5%)
NVVF: Vdd 1.8V (± 5%), Vddq 1.8V (± 5%)
• JTAG Boundary Scan for BGA 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 © 2016 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. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
BLOCK DIAGRAM
A0-17 ( A0-18)
A0-17 ( A0-18)
A2-17(A2-A18)
A0-17(A0-18)
Address
Registers
MODE
ADV
A0-A1
A'0-A'1
K
K
Address
Registers
CLK
256Kx36;
512Kx18
Memory Array
Burst Logic
Address
Registers
/CKE
Data-In
Register
K
/CE
Control register
CE2
/CE2
ADV
/WE
/BWx
(X=a,b,c,d or a,b)
Data-In
Register
Control Logic
K
/OE
Output
Buffers
ZZ
36(18)
K
DQx/DQPx
2
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
Bottom View
165-Ball, 13 mm x 15mm BGA
Bottom View
119-Ball, 14 mm x 22 mm BGA
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 3
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
Pin Configuration —
256K x 36, 165-Ball BGA (Top View)
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
J
K
L
M
NC
NC
DQPc
DQc
DQc
DQc
DQc
NC
DQd
DQd
DQd
DQd
A
A
NC
DQc
DQc
DQc
DQc
NC
DQd
DQd
DQd
DQd
CE
CE2
Vddq
Vddq
Vddq
Vddq
Vddq
NC
Vddq
Vddq
Vddq
Vddq
BWc
BWd
VSS
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
BWb
BWa
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
CE2
CLK
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
CKE
WE
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
ADV
OE
VSS
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
A
NC
Vddq
Vddq
Vddq
Vddq
Vddq
NC
Vddq
Vddq
Vddq
A
A
NC
DQb
DQb
DQb
DQb
NC
DQa
DQa
DQa
NC
NC
DQPb
DQb
DQb
DQb
DQb
ZZ
DQa
DQa
DQa
N
P
R
DQPd
NC
MODE
NC
NC
NC
Vddq
A
A
Vdd
VSS
A
A
VSS
NC
TDI
TMS
VSS
NC
A1*
A0*
VSS
NC
TDO
TCK
Vdd
VSS
A
A
Vddq
Vddq
A
A
DQa
NC
A
A
DQa
DQPa
NC
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
Pin Name
Address Inputs
Synchronous Burst Address Inputs
Synchronous Burst Address Advance/
Load
WE
Synchronous Read/Write Control Input
CLK
Synchronous Clock
CKE
Clock Enable
CE, CE2, CE2 Synchronous Chip Enable
BWx (x=a-d) Synchronous Byte Write Inputs
OE
Output Enable
ZZ
Power Sleep Mode
4
MODE
TCK, TDI
TDO, TMS
VDD
NC
DQx
DQPx
VDDQ
Vss
Burst Sequence Selection
JTAG Pins
Power Supply
No Connect
Data Inputs/Outputs
Parity Data I/O
I/O Power Supply
Ground
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
119-PIN BGA PACKAGE CONFIGURATION
256K x 36 (TOP VIEW)
1
2
3
4
5
6
7
A
VDDQ
A
A
NC
A
A
VDDQ
B
NC
CE2
A
ADV
A
CE2
NC
C
NC
A
A
VDD
A
A
NC
D
DQc
DQPc
VSS
NC
Vss
DQPb
DQb
E
DQc
DQc
VSS
CE
Vss
DQb
DQb
F
VDDQ
DQc
VSS
OE
Vss
DQb
VDDQ
G
DQc
DQc
BWc
A
BWb
DQb
DQb
H
DQc
DQc
VSS
WE
Vss
DQb
DQb
J
VDDQ
VDD
NC
VDD
NC
VDD
VDDQ
K
DQd
DQd
VSS
CLK
Vss
DQa
DQa
L
DQd
DQd
BWd
NC
BWa
DQa
DQa
M
VDDQ
DQd
VSS
CKE
Vss
DQa
VDDQ
N
DQd
DQd
VSS
A 1*
Vss
DQa
DQa
P
DQd
DQPd
VSS
A0*
Vss
DQPa
DQa
R
NC
A
MODE
VDD
NC
A
NC
T
NC
NC
A
A
A
NC
ZZ
U
VDDQ
TMS
TDI
TCK
TDO
NC
VDDQ
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
OE
Output Enable
ZZ
Power Sleep Mode
MODE
Burst Sequence Selection
TCK, TDO
JTAG Pins
TMS, TDI
Vdd
Power Supply
Vss
Ground
NC
No Connect
DQa-DQd
Data Inputs/Outputs
DQPa-Pd
Parity Data I/O
Vddq
I/O Power Supply
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 5
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
165-PIN BGA PACKAGE CONFIGURATION
512K x 18 (TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
A
NC
A
BWb
NC
CE2
CKE
ADV
B
NC
A
CE
CE2
A
NC
A
A
C
NC
NC
VDDQ
NC
Vss
BWa
Vss
CLK
Vss
WE
Vss
D
NC
DQb
VDDQ
VDD
Vss
Vss
Vss
OE
Vss
VDD
A
VDDQ
NC
NC
DQPa
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
H
NC
NC
NC
VDD
VDD
Vss
Vss
Vss
Vss
VDD
VDD
VDDQ
NC
DQa
J
DQb
NC
VDDQ
VDD
Vss
Vss
NC
NC
ZZ
Vss
Vss
VDD
VDDQ
DQa
NC
K
DQb
NC
VDDQ
VDD
Vss
Vss
Vss
VDD
VDDQ
DQa
VDD
Vss
Vss
VDD
VDDQ
DQa
VDDQ
VDD
Vss
Vss
Vss
NC
NC
L
DQb
NC
VDDQ
M
DQb
NC
Vss
VDD
VDDQ
DQa
NC
N
DQPb
NC
Vss
A
NC
TDI
NC
NC
Vss
NC
TDO
A
A
NC
NC
A
A
TMS
A1*
A0*
VDDQ
A
NC
NC
VDDQ
A
P
NC
R
MODE
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
Pin Name
Address Inputs
Synchronous Burst Address Inputs
Synchronous Burst Address Advance/
Load
WE
Synchronous Read/Write Control Input
CLK
Synchronous Clock
CKE
Clock Enable
CE, CE2, CE2 Synchronous Chip Enable
BWx (x=a,b) Synchronous Byte Write Inputs
OE
Output Enable
ZZ
Power Sleep Mode
6
MODE
TCK, TDI
TDO, TMS
VDD
NC
DQx
DQPx
VDDQ
Vss
Burst Sequence Selection
JTAG Pins
Power Supply
No Connect
Data Inputs/Outputs
Parity Data I/O
I/O Power Supply
Ground
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
119-PIN BGA PACKAGE CONFIGURATION
512K x 18 (TOP VIEW)
1
2
3
4
5
6
7
A
VDDQ
A
A
NC
A
A
VDDQ
B
NC
CE2
A
ADV
A
CE2
NC
C
NC
A
A
VDD
A
A
NC
D
DQb
NC
VSS
NC
Vss
DQPa
NC
E
DQb
VSS
CE
Vss
NC
DQa
F
NC
VDDQ
NC
VSS
OE
Vss
DQa
VDDQ
G
NC
DQb
BWb
A
NC
NC
DQa
H
DQb
NC
WE
Vss
DQa
NC
J
VDDQ
VDD
VSS
NC
VDD
NC
VDD
VDDQ
K
NC
DQb
VSS
CLK
Vss
NC
DQa
L
DQb
NC
NC
NC
BWa
DQa
NC
M
VDDQ
DQb
VSS
CKE
Vss
NC
VDDQ
N
DQb
NC
VSS
A 1*
Vss
DQa
NC
P
NC
DQPb
VSS
A0*
Vss
NC
DQa
R
NC
A
MODE
VDD
NC
A
NC
T
NC
A
A
NC
A
A
ZZ
U
VDDQ
TMS
TDI
TCK
TDO
NC
VDDQ
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)
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
OE
Output Enable
ZZ
Power Sleep Mode
MODE
Burst Sequence Selection
TCK, TDO
JTAG Pins
TMS, TDI
Vdd
Power Supply
Vss
Ground
NC
No Connect
DQa-DQb
Data Inputs/Outputs
DQPa-Pb
Parity Data I/O
Vddq
I/O Power Supply
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
7
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
PIN CONFIGURATION
DQa
DQb
DQa
DQb
VDDQ
VDDQ
Vss
NC
Vss
DQa
Vss
DQb
DQa
DQb
DQa
DQa
Vss
DQPb
NC
VDDQ
VDDQ
DQa
DQa
DQPa
NC
NC
NC
Vss
A
ADV
NC
OE
CKE
CLK
WE
CE2
VDD
Vss
BWa
NC
BWb
NC
CE2
CE
A
A
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
DQb
NC
VDD
A
DQb
Vss
NC
VDD
ZZ
A
DQb
A
VDDQ
DQb
A
VDDQ
NC
A
Vss
NC
DQb
VDD
Vss
DQb
Vss
DQb
NC
NC
NC
NC
DQb
Vss
A1
A0
MODE
DQd
DQd
DQPd
DQb
DQb
VDDQ
A
VDDQ
Vss
NC
A
DQd
DQd
Vss
VDDQ
NC
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
DQd
DQb
NC
A
Vss
DQd
DQb
MODE
VDDQ
DQPb
A
A
DQd
A
DQd
A
NC
Vss
A
DQc
NC
VDD
A
DQc
NC
A
VDDQ
NC
Vss
Vss
DQc
VDD
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
A
A
A
OE
ADV
NC
CKE
CLK
WE
CE2
VDD
Vss
BWa
BWc
BWb
BWd
CE2
CE
A
A
100-Pin QFP
512K x 18
256K x 36
PIN DESCRIPTIONS
A0, A1
A
CLK
ADV
BWa-BWd
WE
CKE
Vss
NC
8
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
Power Supply
Ground for output Buffer
I/O Power Supply
Snooze Enable
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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).
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
9
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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.
10
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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.
Power Up Sequence
Vddq → Vdd1 → I/O Pins2
Notes:
1. Vdd can be applied at the same time as Vddq
2. Applying I/O inputs is recommended after Vddq is ready. The inputs of the I/O pins can be applied at the
same time as Vddq provided Vih (level of I/O pins) is lower than Vddq.
Power-UP INITIALIZATION TIMING
VDD
power > 1ms
VDD
VDDQ
Device Initialization
Device ready for
normal operation
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
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 11
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
Storage Temperature
Power Dissipation
Output Current (per I/O)
Voltage Relative to Vss for I/O Pins
Voltage Relative to Vss for
for Address and Control Inputs
NLF Value
–65 to +150
1.6
100
–0.5 to Vddq + 0.3
–0.3 to Vdd + 0.5
NVF/NVVF Value
–65 to +150
1.6
100
–0.5 to Vddq + 0.3
–0.3 to Vdd + 0.3
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.
OPERATING RANGE (IS61NLFx)
Range
Commercial
Industrial
12
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%
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
OPERATING RANGE (IS61NVFx)
Range
Commercial
Industrial
Ambient Temperature
0°C to +70°C
-40°C to +85°C
Vdd
2.5V ± 5%
2.5V ± 5%
Vddq
2.5V ± 5%
2.5V ± 5%
Vdd
1.8V ± 5%
1.8V ± 5%
Vddq
1.8V ± 5%
1.8V ± 5%
OPERATING RANGE (IS61NVVFx)
Range
Commercial
Industrial
Ambient Temperature
0°C to +70°C
-40°C to +85°C
DC ELECTRICAL CHARACTERISTICS (Over Operating Range) 1, 2, 3
3.3V 2.5V 1.8V
Symbol Parameter
Test Conditions
Min. Max.
Min. Max.
Min. Max. Unit
Voh
Output HIGH Voltage
Ioh = –4.0 mA (3.3V)
2.4 —
2.0 —
Vddq - 0.4 —
V
Ioh = –1.0 mA (2.5V, 1.8V)
Vol
Output LOW Voltage
Iol = 8.0 mA (3.3V)
— 0.4
— 0.4
— 0.4
V
Iol = 1.0 mA (2.5V, 1.8V)
Vih
Input HIGH Voltage
2.0 Vdd + 0.3
1.7 Vdd + 0.3 0.6Vdd Vdd + 0.3 V
Vil
Input LOW Voltage
–0.3 0.8
–0.3 0.7
–0.3 0.3Vdd V
(1)
Ili
Input Leakage Current
Vss ≤ Vin ≤ Vdd
–5 5
–5 5
–5 5
µA
Ilo
Output Leakage Current
Vss ≤ Vout ≤ Vddq, OE = Vih
–5 5
–5 5
–5 5
µA
Notes:
1. All voltages referenced to ground.
2. Overshoot:
3.3V and 2.5V: Vih (AC) ≤ Vdd + 1.5V (Pulse width less than tkc /2)
1.8V: Vih (AC) ≤ Vdd + 0.5V (Pulse width less than tkc /2)
3. Undershoot:
3.3V and 2.5V: Vil (AC) ≥ -1.5V (Pulse width less than tkc /2)
1.8V: Vil (AC) ≥ -0.5V (Pulse width less than tkc /2)
POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)
Symbol Parameter
Icc
AC Operating
Supply Current
Isb
Standby Current
TTL Input
Isbi
Standby Current
CMOS Input
Test Conditions
Temp. range
Device Selected,
Com.
OE = Vih, ZZ ≤ Vil,
Ind.
All Inputs ≤ 0.2V or ≥ Vdd – 0.2V,
Cycle Time ≥ tkc min.
Device Deselected,
Com.
Vdd = Max.,
Ind.
All Inputs ≤ Vil or ≥ Vih,
ZZ ≤ Vil, f = Max.
Device Deselected,
Com.
Vdd = Max.,
Ind.
Vin ≤ Vss + 0.2V or ≥Vdd – 0.2V
f = 0
6.5
7.5
MAX
MAX
x18 x36
x18 x36
120 120
110 110
130 130 120 120
Unit
mA
65
70
65
70
65
70
65
70
mA
50
55
50
55
50
55
50
55
mA
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.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 13
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
14
Figure 2
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
Figure 4
1.8V 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 1.8V
1.5 ns
0.9V
See Figures 5 and 6
1.8V I/O OUTPUT LOAD EQUIVALENT
1K Ω
+1.8V
ZO = 50Ω
OUTPUT
OUTPUT
50Ω
5 pF
Including
jig and
scope
1K Ω
0.9V
Figure 5
Figure 6
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 15
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
READ/WRITE CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)
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
tpower(4)
Notes:
6.5
Min. Max.
—
133
7.5
—
2.2
—
2.2
—
—
6.5
2.5
—
2.5
—
—
3.8
—
3.2
0
—
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
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
Vdd (typical) to First Access
—
1.5
1.5
1.5
1.5
1.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
1
3.5
—
—
—
—
—
—
—
—
—
—
—
—
—
7.5
Min. Max.
— 117
8.5 —
2.5 —
2.5 —
— 7.5
2.5 —
2.5 —
— 4.0
— 3.4
0
—
— 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 —
1
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
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.
4. tpower is the time that the power needs to be supplied above Vdd (min) initially before READ or WRITE operation can be
initiated.
16
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
SNOOZE MODE ELECTRICAL CHARACTERISTICS
Symbol Parameter Conditions
Temperature
Min. Max.
Unit
Range
Isb2
Current during SNOOZE MODE ZZ ≥ Vih
Com.
—
15
mA
Ind.
— 20
tpds
ZZ active to input ignored
—
2
cycle
tpus
ZZ inactive to input sampled
2
—
cycle
tzzi
ZZ active to SNOOZE current
—
2
cycle
trzzi
ZZ inactive to exit SNOOZE current
0
—
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
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
17
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
tDS
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
18
Q2-4
Q3-1
Q3-2
Q3-3
Q3-4
Don't Care
Undefined
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
Don't Care
Undefined
19
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
D5
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
Don't Care
Undefined
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
D5
Don't Care
Undefined
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 21
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
22
D5
Don't Care
Undefined
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
IEEE 1149.1 Serial Boundary Scan (JTAG)
Test Access Port (TAP) - Test Clock
The serial boundary scan Test Access Port (TAP) is only
available in the BGA package. (Not available in QFP
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 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 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.
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)
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
TAP CONTROLLER
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 23
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
Test Data Out (TDO)
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.
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 reg-
ister is set LOW (Vss) when the BYPASS instruction is
executed.
Boundary Scan 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.
Scan Register Sizes
Register
Bit Size
Bit Size
Name
(x18) (x36)
Instruction 3 3
Bypass
1
1
ID
32 32
Boundary Scan
90
90
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)
24
Description
Reserved for version number.
Defines depth of SRAM. 256K or 512K
Defines Width of the SRAM. x36 or x18
Reserved for future use.
Allows unique identification of SRAM vendor.
Indicate the presence of an ID register.
256K x 36
xxxx
00111
00100
xxxxx
00001010101
1
512K x 18
xxxx
01000
00011
xxxxx
00001010101
1
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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.
SAMPLE-Z
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.
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.
Reserved
These instructions are not implemented but are reserved
for future use. Do not use these instructions.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 25
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
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
26
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
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
TAP Electrical Characteristics (2.5V and 3.3V Operating Range)
Symbol Parameter
Test Conditions
Min.
Max.
Voh1
Output HIGH Voltage
Ioh = –2.0 mA
1.7
—
Voh2
Output HIGH Voltage
Ioh = –100 µA
2.1
—
Vol1
Output LOW Voltage
Iol = 2.0 mA
—
0.7
Vol2
Output LOW Voltage
Iol = 100 µA
—
0.2
Vih
Input HIGH Voltage
1.7
Vdd +0.3
Vil
Input LOW Voltage
–0.3
0.7
Ix
Input Leakage Current
Vss ≤ V I ≤ Vddq
–10
10
TAP Electrical Characteristics (1.8V Operating Range)
Symbol Parameter
Voh1
Output HIGH Voltage
Vol1
Vih
Vil
Ix
Test Conditions
Min.
Max.
Ioh = –2.0 mA
Vdd -0.4
—
Output LOW Voltage
Iol = 2.0 mA
-0.3
0.5
Input HIGH Voltage
1.3
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
Units
V
V
V
V
µA
TAP AC ELECTRICAL CHARACTERISTICS (Over Operating Range)
Parameter
Symbol
Min
Max
Units
TCK cycle time
tTHTH
100
–
ns
TCK high pulse width
tTHTL
40
–
ns
TCK low pulse width
tTLTH
40
–
ns
TMS Setup
tMVTH
10
–
ns
TMS Hold
tTHMX
10
–
ns
TDI Setup
tDVTH
10
–
ns
TDI Hold
tTHDX
10
–
ns
TCK Low to Valid Data
tTLOV
–
20
ns
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
27
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
TAP AC TEST conditions
(1.8V/2.5V/3.3V)Input pulse levels
0 to 1.8V/0 to 2.5V/0 to 3.0V
1.5ns
0.9V/1.25V/1.5V
0.9V/1.25V/1.5V
0.9V/1.25V/1.5V
0.9V/1.25V/1.5V
Input rise and fall times
Input timing reference levels
Output reference levels
Test load termination supply voltage
Vtrig
TAP Output Load Equivalent
50Ω
Vtrig
TDO
20 pF
Z0 = 50Ω
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
28
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
119 BGA Boundary Scan Order
TBD
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
29
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
165 bga Boundary Scan Order
165 BGA
165 BGA
X36
X18
X36
X18
Bit #
Bump ID
Signal
Bump ID
Signal
Bit #
Bump ID
Signal
Bump ID
Signal
1
N6
NC
N6
NC
41
B8
/OE
B8
/OE
2
N7
NC
N7
NC
42
A7
/CKE
A7
/CKE
3
N10
NC
N10
NC
43
B7
/WE
B7
/WE
4
P11
NC
P11
NC
44
B6
CLK
B6
CLK
5
P8
A17
P8
A17
45
A6
/CE2
A6
/CE2
6
R8
A16
R8
A16
46
B5
/Bwa
B5
/Bwa
7
R9
A15
R9
A15
47
A5
/Bwb
A5
NC
8
P9
A14
P9
A14
48
A4
/Bwc
A4
/Bwb
9
P10
A13
P10
A13
49
B4
/Bwd
B4
NC
10
R10
A12
R10
A12
50
B3
CE2
B3
CE2
11
R11
A11
R11
A11
51
A3
/CE1
A3
/CE1
12
H11
ZZ
H11
ZZ
52
A2
A7
A2
A7
13
N11
DQa0
N11
NC
53
B2
A6
B2
A6
14
M11
DQa1
M11
NC
54
C2
NC
C2
NC
B1
NC
B1
NC
15
L11
DQa2
L11
NC
55
16
M10
DQa3
M10
NC
56
A1
NC
A1
NC
17
L10
DQa4
L10
NC
57
C1
DQc0
C1
NC
18
K11
DQa5
K11
DQa8
58
D1
DQc1
D1
NC
19
J11
DQa6
J11
DQa7
59
E1
DQc2
E1
NC
20
K10
DQa7
K10
DQa6
60
D2
DQc3
D2
NC
21
J10
DQa8
J10
DQa5
61
E2
DQc4
E2
NC
22
H9
NC
H9
NC
62
F1
DQc5
F1
DQb8
23
H10
NC
H10
NC
63
G1
DQc6
G1
DQb7
24
G11
DQb8
G11
DQa4
64
F2
DQc7
F2
DQb6
25
F11
DQb7
F11
DQa3
65
G2
DQc8
G2
DQb5
26
G10
DQb6
G10
DQa2
66
H1
NC
H1
NC
27
E11
DQb5
E11
DQa1
67
H2
NC
H2
NC
28
D11
DQb4
D11
DQa0
68
H3
NC
H3
NC
29
F10
DQb3
C11
NC
69
J1
DQd8
J1
DQb4
30
E10
DQb2
E10
NC
70
K1
DQd7
K1
DQb3
31
D10
DQb1
D10
NC
71
J2
DQd6
J2
DQb2
32
C11
DQb0
F10
NC
72
L1
DQd5
L1
DQb1
33
A11
NC
A11
A18
73
M1
DQd4
M1
DQb0
34
B11
NC
B11
NC
74
K2
DQd3
N1
NC
35
A10
A10
A10
A10
75
L2
DQd2
L2
NC
36
B10
A9
B10
A9
76
M2
DQd1
M2
NC
37
A9
A8
A9
A8
77
N1
DQd0
K2
NC
38
B9
NC
B9
NC
78
N2
NC
N2
NC
39
C10
NC
C10
NC
79
P1
NC
P1
NC
40
A8
ADV
A8
ADV
80
R1
MODE
R1
MODE
30
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
165 BGA
X36
X18
Bit #
Bump ID
Signal
Bump ID
Signal
81
R2
NC
R2
NC
82
P3
A5
P3
A5
83
R3
A4
R3
A4
84
P2
NC
P2
NC
85
P4
A2
P4
A2
86
R4
A3
R4
A3
87
N5
NC
N5
NC
88
P6
A1
P6
A1
89
R6
A0
R6
A0
90
*
Int
*
Int
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 31
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
ORDERING INFORMATION (Vdd = 3.3V/Vddq = 2.5V/3.3V)
Commercial Range: 0°C to +70°C
Access Time
Order Part Number Package
256Kx36
6.5
IS61NLF25636B-6.5TQ
100 QFP
IS61NLF25636B-6.5TQL
100 QFP, Lead-free
IS61NLF25636B-6.5B2
119 BGA
IS61NLF25636B-6.5B3
165 BGA
7.5
IS61NLF25636B-7.5TQ
100 QFP
IS61NLF25636B-7.5TQL
100 QFP, Lead-free
IS61NLF25636B-7.5B2
119 BGA
IS61NLF25636B-7.5B3
165 BGA
512Kx18
6.5
IS61NLF51218B-6.5TQ
100 QFP
IS61NLF51218B-6.5TQL
100 QFP, Lead-free
IS61NLF51218B-6.5B2
119 BGA
IS61NLF51218B-6.5B3
165 BGA
7.5
IS61NLF51218B-7.5TQ
100 QFP
IS61NLF51218B-7.5TQL
100 QFP, Lead-free
IS61NLF51218B-7.5B2
119 BGA
IS61NLF51218B-7.5B3
165 BGA
ORDERING INFORMATION (Vdd = 3.3V/Vddq = 2.5V/3.3V)
Industrial Range: -40°C to +85°C
Access Time
Order Part Number Package
256Kx36
6.5
IS61NLF25636B-6.5TQI
100 QFP
IS61NLF25636B-6.5TQLI
100 QFP, Lead-free
IS61NLF25636B-6.5B2I
119 BGA
IS61NLF25636B-6.5B3I
165 BGA
7.5
IS61NLF25636B-7.5TQI
100 QFP
IS61NLF25636B-7.5TQLI
100 QFP, Lead-free
IS61NLF25636B-7.5B2I
119 BGA
IS61NLF25636B-7.5B3I
165 BGA
512Kx18
6.5
IS61NLF51218B-6.5TQI
100 QFP
IS61NLF51218B-6.5TQLI
100 QFP, Lead-free
IS61NLF51218B-6.5B2I
119 BGA
IS61NLF51218B-6.5B3I
165 BGA
7.5
IS61NLF51218B-7.5TQI
100 QFP
IS61NLF51218B-7.5TQLI
100 QFP, Lead-free
IS61NLF51218B-7.5B2I
119 BGA
IS61NLF51218B-7.5B3I
165 BGA
32
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
ORDERING INFORMATION (Vdd = 2.5V/Vddq = 2.5V)
Industrial Range: -40°C to +85°C
Access Time
6.5
7.5
6.5
7.5
Order Part Number Package
256Kx36
IS61NVF25636B-6.5TQI
100 QFP
IS61NVF25636B-6.5B2I
119 BGA
IS61NVF25636B-6.5B3I
165 BGA
IS61NVF25636B-7.5TQI
100 QFP
IS61NVF25636B-7.5B2I
119 BGA
IS61NVF25636B-7.5B3I
165 BGA
512Kx18
IS61NVF51218B-6.5TQI
100 QFP
IS61NVF51218B-6.5B2I
119 BGA
IS61NVF51218B-6.5B3I
165 BGA
IS61NVF51218B-7.5TQI
100 QFP
IS61NVF51218B-7.5B2I
119 BGA
IS61NVF51218B-7.5B3I
165 BGA
ORDERING INFORMATION (Vdd = 1.8V/Vddq = 1.8V)
Please contact SRAM Marketing at sram@issi.com
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 33
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
34
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 35
Rev. A1
05/23/2016
36
Package Outline
1. CONTROLLING DIMENSION : MM .
NOTE :
08/28/2008
IS61NLF25636B/IS61NVF/NVVF25636B
IS61NLF51218B/IS61NVF/NVVF51218B
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
05/23/2016