IS64LF6436
IS64LF6432
64K x 32, 64Kx36 SYNCHRONOUS
FLOW-THROUGH STATIC RAM
FEATURES
• Internal self-timed write cycle
• Individual Byte Write Control and Global Write
• 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
• Common data inputs and data outputs
• Power-down control by ZZ input
• JEDEC 100-Pin TQFP package
• Power Supply:
+3.3V V
DD
+3.3V or 2.5V V
DDQ
• Control pins mode upon power-up:
– MODE in interleave burst mode
– ZZ in normal operation mode
• Temperature offerings:
Option A1: -40
0
C to +85
0
C
Option A2: -40
0
C to +105
0
C
Option A3: -40
0
C to +125
0
C
ISSI
PRELIMINARY INFORMATION
AUGUST 2003
®
DESCRIPTION
The
ISSI
IS64LF6432 and IS64LF6436 are high-speed,
low-power synchronous static RAM designed to provide a
burstable, high-performance, memory. IS64LF6432 is orga-
nized as 65,536 words by 32 bits and IS64LF6436 is
organized as 65,536 words by 36 bits. They are fabricated
with
ISSI
's advanced CMOS technology. The device inte-
grates 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 controlled by
a positive-edge-triggered single clock input.
Write cycles are internally self-timed and are initiated by the
rising edge of the clock input. Write cycles can be from one
to four bytes wide as controlled by the write control inputs.
Separate byte enables allow individual bytes to be written.
BW1
controls DQ1-DQ8,
BW2
controls DQ9-DQ16,
BW3
controls DQ17-DQ24,
BW4
controls DQ25-DQ32, condi-
tioned by
BWE
being LOW. A LOW on
GW
input would
cause all bytes to be written.
Bursts can be initiated with either
ADSP
(Address Status
Processor) or
ADSC
(Address Status Cache Controller)
input pins. Subsequent burst addresses can be generated
internally by the IS64LF6432/36 and controlled by the
ADV
(burst address advance) input pin.
The mode pin is used to select the burst sequence order.
Linear burst is achieved when this pin is tied LOW. Inter-
leave burst is achieved when this pin is tied HIGH or left
floating.
FAST ACCESS TIME
Symbol
t
KQ
t
KC
Parameter
Clock Access Time
Cycle Time
Frequency
8.5
8.5
11
90
10
10
15
66
Unit
ns
ns
MHz
Copyright © 2003 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. — 1-800-379-4774
Rev. 00B
07/24/03
1
IS64LF6432
IS64LF6436
ISSI
MODE
Q0
A0'
A0
Q1
A1'
A1
®
BLOCK DIAGRAM
CLK
CLK
BINARY
COUNTER
ADV
ADSC
ADSP
CE
CLR
64Kx32 / 64Kx36
MEMORY
ARRAY
14
16
A
16
D
Q
ADDRESS
REGISTER
CE
CLK
32
or
36
32
or
36
GW
BWE
BW4
(x32/x36)
D
Q
DQ32-DQ25
BYTE WRITE
REGISTERS
CLK
D
BW3
(x32/x36)
Q
DQ24-DQ17
BYTE WRITE
REGISTERS
CLK
D
BW2
(x32/x36)
Q
DQ16-DQ9
BYTE WRITE
REGISTERS
CLK
D
BW1
(x32/x36)
Q
DQ8-DQ1
BYTE WRITE
REGISTERS
CLK
CE
CE2
CE2
D
Q
4
ENABLE
REGISTER
CE
CLK
INPUT
REGISTERS
CLK
OE
32 or 36
DATA[32:1]
D
Q
ENABLE
DELAY
REGISTER
CLK
OE
2
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00B
07/24/03
IS64LF6432
IS64LF6436
ISSI
®
PIN CONFIGURATION
100-Pin TQFP
A
A
CE
CE2
BW4
BW3
BW2
BW1
CE2
VDD
GND
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A
A
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
NC
DQc
DQc
VDDQ
GND
DQc
DQc
DQc
DQc
GND
VDDQ
DQc
DQc
NC
VDD
NC
GND
DQd
DQd
VDDQ
GND
DQd
DQd
DQd
DQd
GND
VDDQ
DQd
DQd
NC
NC
DQb
DQb
VDDQ
GND
DQb
DQb
DQb
DQb
GND
VDDQ
DQb
DQb
GND
NC
VDD
ZZ
DQa
DQa
VDDQ
GND
DQa
DQa
DQa
DQa
GND
VDDQ
DQa
DQa
NC
64K x 32
PIN DESCRIPTIONS
A0, A1
Synchronous Address Inputs. These
pins must tied to the two LSBs of the
address bus.
Synchronous Address Inputs
Synchronous Clock
Synchronous Processor Address
Status
Synchronous Controller Address
Status
Synchronous Burst Address Advance
Individual Byte Write Enable
Synchronous Byte Write Enable
GW
CE, CE2,
CE2
OE
DQa-DQd
MODE
V
DD
GND
V
DDQ
ZZ
Synchronous Global Write Enable
Synchronous Chip Enable
Output Enable
Synchronous Data Input/Output
Burst Sequence Mode Selection
+3.3V Power Supply
Ground
Isolated Output Buffer Supply: +3.3V
or 2.5V
Snooze Enable
A
CLK
ADSP
ADSC
ADV
BW1-BW4
BWE
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00B
07/24/03
MODE
A
A
A
A
A1
A0
NC
NC
GND
VDD
NC
NC
A
A
A
A
A
A
NC
3
IS64LF6432
IS64LF6436
ISSI
®
PIN CONFIGURATION
100-Pin TQFP
A
A
CE
CE2
BW4
BW3
BW2
BW1
CE2
VDD
GND
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A
A
DQPc
DQc
DQc
VDDQ
GND
DQc
DQc
DQc
DQc
GND
VDDQ
DQc
DQc
NC
VDD
NC
GND
DQd
DQd
VDDQ
GND
DQd
DQd
DQd
DQd
GND
VDDQ
DQd
DQd
DQPd
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
MODE
A
A
A
A
A1
A0
NC
NC
GND
VDD
NC
NC
A
A
A
A
A
A
NC
DQPb
DQb
DQb
VDDQ
GND
DQb
DQb
DQb
DQb
GND
VDDQ
DQb
DQb
GND
NC
VDD
ZZ
DQa
DQa
VDDQ
GND
DQa
DQa
DQa
DQa
GND
VDDQ
DQa
DQa
DQPa
64K x 36
PIN DESCRIPTIONS
A0, A1
Synchronous Address Inputs. These
pins must tied to the two LSBs of the
address bus.
Synchronous Address Inputs
Synchronous Clock
Synchronous Processor Address
Status
Synchronous Controller Address
Status
Synchronous Burst Address Advance
Individual Byte Write Enable
Synchronous Byte Write Enable
GW
CE, CE2,
CE2
OE
DQa-DQd
MODE
V
DD
GND
V
DDQ
ZZ
DQPa-DQPd
Synchronous Global Write Enable
Synchronous Chip Enable
Output Enable
Synchronous Data Input/Output
Burst Sequence Mode Selection
+3.3V Power Supply
Ground
Isolated Output Buffer Supply: +3.3V or
2.5V
Snooze Enable
Parity Data I/O
A
CLK
ADSP
ADSC
ADV
BW1-BW4
BWE
4
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00B
07/24/03
IS64LF6432
TRUTH TABLE
Operation
IS64LF6436
ISSI
CE2
X
X
L
X
L
H
H
H
X
X
X
X
X
X
X
X
X
X
X
X
CE2
X
H
X
H
X
L
L
L
X
X
X
X
X
X
X
X
X
X
X
X
ADSP ADSC
X
L
L
H
H
L
H
H
H
H
X
X
H
X
H
H
X
X
H
X
L
X
X
L
L
X
L
L
H
H
H
H
H
H
H
H
H
H
H
H
ADV
X
X
X
X
X
X
X
X
L
L
L
L
L
L
H
H
H
H
H
H
WRITE
X
X
X
X
X
X
Read
Write
Read
Read
Read
Read
Write
Write
Read
Read
Read
Read
Write
Write
OE
X
X
X
X
X
X
X
X
L
H
L
H
X
X
L
H
L
H
X
X
DQ
High-Z
High-Z
High-Z
High-Z
High-Z
Q
Q
D
Q
High-Z
Q
High-Z
D
D
Q
High-Z
Q
High-Z
D
D
H
L
L
X
X
L
L
L
X
X
H
H
X
H
X
X
H
H
X
H
®
Address
Used
CE
None
None
None
None
None
External
External
External
Next
Next
Next
Next
Next
Next
Current
Current
Current
Current
Current
Current
Deselected, Power-down
Deselected, Power-down
Deselected, Power-down
Deselected, Power-down
Deselected, Power-down
Read Cycle, Begin Burst
Read Cycle, Begin Burst
Write Cycle, Begin Burst
Read Cycle, Continue Burst
Read Cycle, Continue Burst
Read Cycle, Continue Burst
Read Cycle, Continue Burst
Write Cycle, Continue Burst
Write Cycle, Continue Burst
Read Cycle, Suspend Burst
Read Cycle, Suspend Burst
Read Cycle, Suspend Burst
Read Cycle, Suspend Burst
Write Cycle, Suspend Burst
Write Cycle, Suspend Burst
PARTIAL TRUTH TABLE
Function
Read
Read
Write Byte 1
Write All Bytes
Write All Bytes
GW
H
H
H
H
L
BWE
H
L
L
L
X
BW1
X
H
L
L
X
BW2
X
H
H
L
X
BW3
X
H
H
L
X
BW4
X
H
H
L
X
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00B
07/24/03
5