NTE6664 NTE ELECTRONICS, NTE6664 Datasheet - Page 3

• Manufacturer Part Number: NTE6664
• Description: IC, DRAM, 64KBIT, DIP-16
• Manufacturer: NTE ELECTRONICS

Specifications of NTE6664

• Memory Type: DRAM
• Access Time: 150ns
• Page Size: 64Kbit
• Memory Case Style: DIP
• No. Of Pins: 16
• Operating Temperature Range: 0°C To +70°C
• Mounting Type: Through Hole
• Memory Size: 64Kbit
• Package / Case: 16-DIP

Read, Write, and Read–Modify–Write Cycles (Cont’d): (V
Note 6. V
Note 7. An initial pause of 100 s is required after power–up followed by 8 RAS cycles before proper
RAS to CAS Delay Time
Row Address Setup Time
Row Address Hold Time
Column Address Setup Time
Column Address Hold Time
Column Address Hold Time Referenced to RAS
Transition Time (Rise and Fall)
Read Command Setup Time
Read Command Hold Time Referenced to CAS
Read Command Hold Time Referenced to RAS
Write Command Hold Time
Write Command Hold Time Referenced to RAS
Write Command Pulse Width
Write Command to RAS Lead Time
Write Command to CAS Lead Time
Data in Setup Time
Data in Hold Time
Data in Hold Time Referenced to RAS
CAS to RAS Precharge Time
RAS Hold Time
Refresh Period
Write Command Setup Time
CAS to Write Delay
RAS to Write Delay
CAS Hold Time
CAS Precharge Time (Page Mode Cycle Only)
Page Mode Cycle Time
RAS to REFRESH Delay
REFRESH Period (Battery Backup Mode)
REFRESH to RAS Precharge Time
REFRESH Cycle Time (Auto Pulse Mode)
REFRESH Pulse Period (Auto Period Mode)
REFRESH to RAS Setup Time (Auto Pulse Mode)
REFRESH to RAS Delay Time (Auto Pulse Mode)
REFRESH Inactive Time
RAS to REFRESH Lead Time
RAS Inactive Time During REFRESH
(Battery Backup Mode)
times are measured between V
device operation is guaranteed.
IH
min and V
Parameter
IL
max are reference levels for measuring timing of input signals. Transition
IH
and V
Symbol
unless otherwise specified, Notes 6, 7, and 8)
t
t
t
t
t
IL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RFSH
t
t
t
t
t
t
WCH
WCR
WCS
CWD
RWD
t
RWL
CWL
t
RCD
ASR
RAH
ASC
CAH
t
RCS
RCH
RRH
t
t
DHR
CRP
RSH
CSH
t
t
RFD
FRD
FBP
FBR
t
t
FSR
FRL
WP
FRI
t
AR
DS
DH
CP
PC
FC
t
FP
.
FI
T
Note 14
Note 18
Note 15
Note 15
Note 18
Note 16
Note 16
Note 18
Note 17
Note 17
Note 17
Test Conditions
CC
= 5V 10%, T
2000
Min
–10
–10
120
150
145
–10
320
270
–30
320
370
370
25
20
35
95
35
95
35
45
45
35
95
75
45
60
60
60
0
0
3
0
0
0
0
–
A
= 0 to +70 C
Typ
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
2000
Max
75
50
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns