HYPER PAGE MODE 1073741824 - BIT ( 16777216 - WORD BY 64 - BIT ) DYNAMIC RAM
DESCRIPTION
The MH16V6445BWJ is 16777216-word x 64-bit dynamic
ram module. This consist of sixteen industry standard 16M
x 4 dynamic RAMs in SOJ and one industry standard
EEPROM in TSSOP.
The mounting of SOJs and TSSOP on a card edge dual
in-line package provides any application where high
densities and large of quantities memory are required.
This is a socket-type memory module ,suitable for easy
interchange or addition of module.
FEATURES
/RAS
/CAS Address /OECyclePower
access
access
access
Type name
MH16V6445BWJ-5
MH16V6445BWJ-6
time
(max.ns)
50
60
time
(max.ns)
132513
1530
Utilizes industry standard 16M x 4 RAMs in SOJ and industry
standard EEPROM in TSSOP
168-pin (84-pin dual dual in-line package)
Single +3.3V(±0.3V) supply operation
Low stand-by power dissipation
All input are directly LVTTL compatible
All output are three-state and directly LVTTL compatible
Includes(0.22uF x 16) decoupling capacitors
4096 refresh cycle every 64ms
Hyper-page mode,Read-modify-write,
/CAS before /RAS refresh,Hidden refresh capabilities
Gold plating contact pads
time
(max.ns)
access
time
(max.ns)
15
time
(min.ns)
84
104
dissipation
(typ.W)
6.24
5.20
PIN CONFIGURATION
85pin
94pin
95pin
124pin
BACK SIDE
125pin
1pin
10pin
11pin
40pin
FRONT SIDE
41pin
Row Address
Column Address
A0 ~ A11
A0 ~ A11
APPLICATION
Main memory unit for computers , Microcomputer memory
MIT-DS-0239-0.0
MITSUBISHI
ELECTRIC
( / 22 )
1
168pin
84pin
28/Jul./1998
Preliminary Spec.
Specifications subject to
change without notice.
MH16V6445BWJ -5, -6
HYPER PAGE MODE 1073741824 - BIT ( 16777216 - WORD BY 64 - BIT ) DYNAMIC RAM
MITSUBISHI LSIs
PIN CONFIGURATION
Pin No.Pin NamePin No.Pin NamePin No.Pin NamePin No.Pin Name
a number of other functions, e.g., Hyper page mode,
/CAS before /RAS refresh, and delayed-write. The
input conditions for each are shown in Table 1.
/OE
ACT
DNC
DNC
ACT
ACT
DNC
Row
address
APD
APD
APD
APD
DNC
DNC
Column
address
APD
APD
APD
APD
DNC
DNC
Input
OPN
VLD
VLD
VLD
OPN
DNC
Output
OPN
OPN
Refresh
VLD
IVD
VLD
VLD
YES
YES
YES
YES
YES
YES
Remark
Hyper page
mode
identical
MIT-DS-0239-0.0
MITSUBISHI
ELECTRIC
( / 22 )
4
28/Jul./1998
Preliminary Spec.
Specifications subject to
change without notice.
HYPER PAGE MODE 1073741824 - BIT ( 16777216 - WORD BY 64 - BIT ) DYNAMIC RAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Vcc
VIInput voltage
VOOutput voltage
IO
Pd
Topr
Tstg
Supply voltage
Output current
Power dissipation
Operating temperature
Storage temperature
MH16V6445BWJ -5, -6
ParameterConditions
With respect to Vss
Ta=25°C
MITSUBISHI LSIs
Ratings
-0.5~ 4.6
-0.5~ 4.6
-0.5~ 4.6
50
16
0~70
-40~125
Unit
V
V
V
mA
W
°C
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
Vcc
Vss
VIH
VIL
Note 1 : All voltage values are with respect to Vss
Supply voltage
Supply voltage
High-level input voltage, all inputs
Low-level input voltage
ELECTRICAL CHARACTERISTICS
Symbol
VOH
VOL
IOZ
I I
I I (CAS)
ICC1 (AV)
ICC2
ICC4(AV)
ICC6(AV)
Note 2: Current flowing into an IC is positive, out is negative.
3: Icc1 (AV), Icc3 (AV), Icc4 (AV) and Icc6 (AV) are dependent on cycle rate. Maximum current is measured at the fastest cycle rate.
4: Icc1 (AV) and Icc4 (AV) are dependent on output loading. Specified values are obtained with the output open.
5:Column address can be changed once or less while /RAS=VIL and /CAS=VIH
High-level output voltage
Low-level output voltage
Off-state output current
Input current (except /CAS)
Input current (/CAS)0V≤VIN≤Vcc+0.3, Other input pins=0V
Average supply
current
from Vcc operating
Supply current from Vcc , stand-by
Average supply current
from Vcc
Hyper-Page-Mode
Average supply current from
Vcc
/CAS before /RAS refresh
mode
HYPER PAGE MODE 1073741824 - BIT ( 16777216 - WORD BY 64 - BIT ) DYNAMIC RAM
SWITCHING CHARACTERISTICS
(Ta=0~70°C, Vcc=3.3V±0.3V, Vss=0V, unless otherwise noted , see notes 6,14,15)
Limits
ParameterSymbol
- 5
MinMax
tCAC
tRAC
tAA
tCPA
tOEA
tOHCOutput hold time from /CAS
tOHR
tCLZ
tOEZ
tWEZOutput disable time after /WE high(Note 12)
tOFF
tREZ
Note 6: An initial pause of 500us is required after power-up followed by a minimum of eight initialization cycles (any combination of cycles
containing /CAS before /RAS refresh).
Note the /RAS may be cycled during the initial pause . And any 8 /RAS or /RAS /CAS cycles are required after prolonged periods
(greater than 64 ms) of /RAS inactivity before proper device operation is achieved.
7: Measured with a load circuit equivalent to 1 TTL load and 100pF,VOH=2.4V(IOH=-2mA) and VOL=0.4V(IOL=-2mA).
The reference levels for measuring of output signals are 2.0V(VOH)and 0.8V(VOL).
8: Assumes that tRCD ≥ tRCD(max), tASC ≥ tASC(max) and tCP ≥ tCP(max).
9: Assumes that tRCD ≤ tRCD(max) and tRAD ≤ tRAD(max). If tRCD or tRAD is greater than the maximum recommended value shown in this table,
tRAC will increase by amount that tRCD exceeds the value shown.
10: Assumes that tRAD ≥ tRAD(max) and tASC ≤ tASC(max).
11: Assumes that tCP ≤ tCP(max) and tASC ≥ tASC(max).
12: tOEZ (max), tWEZ(max), tOFF(max) and tREZ(max) defines the time at which the output achieves the high impedance state (IOUT ≤ I ± 10uA I )
and is not reference to VOH(min) or VOL(max).
13: Output is disabled after both /RAS and /CAS go to high.
Access time from /CAS
Access time from /RAS
Column address access time
Access time from /CAS precharge
Access time from /OE
Output hold time from /RAS
Output low impedance time /CAS low
(Note 7,8)
(Note 7,9)
(Note 7,10)
(Note 7,11)
(Note 7)
(Note 13)
(Note 7)
Output disable time after /OE high(Note 12)
Output disable time after /CAS high
Output disable time after /RAS high
Note 14: The timing requirements are assumed tT =2ns.
15: VIH(min) and VIL(max) are reference levels for measuring timing of input signals.
16: tRCD(max) is specified as a reference point only. If tRCD is less than tRCD(max), access time is tRAC. If tRCD is greater than tRCD(max), access
time is controlled exclusively by tCAC or tAA. .
17: tRAD(max) is specified as a reference point only. If tRAD≥tRAD(max) and tASC≤tASC(max), access time is controlled exclusively by tAA.
18: tASC(max) is specified as a reference point only. If tRCD≥tRCD(max) and tASC≥tASC(max), access time is controlled exclusively by tCAC.
19: Either tDZC or tDZO must be satisfied.
20: Either tRDD or tCDD or tODD must be satisfied.
21: tT is measured between VIH(min) and VIL(max).
Refresh cycle time
/RAS high pulse width
Delay time, /RAS low to /CAS low
Delay time, /CAS high to /RAS low
Delay time, /RAS high to /CAS low
/CAS high pulse width
Column address delay time from /RAS low
Row address setup time before /RAS low
Column address setup time before /CAS low
Row address hold time after /RAS low
Column address hold time after /CAS low
Delay time, data to /CAS low
Delay time, data to /OE low
Delay time, /RAS high to data
Delay time, /CAS high to data
Delay time, /OE high to data
Read cycle time
/RAS low pulse width
/CAS low pulse width
/CAS hold time after /RAS low
/RAS hold time after /CAS low
Read Setup time after /CAS high
Read hold time after /CAS low
Read hold time after /RAS low
Column address to /RAS hold time
/RAS hold time after /OE low
/CAS hold time after /OE low
ParameterSymbol
Write cycle time
/RAS low pulse width
/CAS low pulse width
/CAS hold time after /RAS low
/RAS hold time after /CAS low
Write setup time before /CAS low
Write hold time after /CAS low
/CAS hold time after /W low
/RAS hold time after /W low
Write pulse width
Data setup time before /CAS low or /W low
Data hold time after /CAS low or /W low
(Note 22)
(Note 22)
(Note 24)
MITSUBISHI LSIs
MH16V6445BWJ -5, -6
Limits
-5
MinMax
84
50
8
35
13
0
0
0
25
13
13
13
MinMax
84
50
8
35
13
0
8
8
8
8
0
8
10000
10000
-5
10000
10000
MinMax
104
60
15tOCH
Limits
MinMax
104
60
10
10
48
15
30
18tCALColumn address to /CAS hold time
15
10
40
15
10
10
10
10
ns
10000
10000
0
0
0
-6
10000
10000
0
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Read-Write and Read-Modify-Write Cycles
Limits
ParameterSymbol
tRWC
tRAS
tCAS
tCSH
tRSH
tRCS
tCWD
tRWD
tAWD
tOEH
Note 23: tRWC is specified as tRWC(min)=tRAC(max)+tODD(min)+tRWL(min)+tRP(min)+4tT.
24:tWCS, tCWD,tRWD ,tAWD and,tCPWD are specified as reference points only. If tWCS≥tWCS(min) the cycle is an early write cycle and the DQ pins will remain
high impedance throughout the entire cycle. If tCWD≥tCWD(min), tRWD≥tRWD (min), tAWD≥tAWD(min) and tCPWD ≥tCPWD(min) (for Hyper page mode cycle only),
the cycle is a read-modify-write cycle and the DQ will contain the data read from the selected address. If neither of the above condition (delayed write) of the DQ (at access
time and until /CAS or /OE goes back to VIH) is indeterminate.
Read write/read modify write cycle time
/RAS low pulse width
/CAS low pulse width
/CAS hold time after /RAS low
/RAS hold time after /CAS low
Read setup time before /CAS low
Delay time, /CAS low to /W low
Delay time, /RAS low to /W low
Delay time, address to /W low
/OE hold time after /W low
MIT-DS-0239-0.0
(Note23)
(Note24)
(Note24)
(Note24)
MITSUBISHI
-5
MinMax
109
75
38
70
38
0
28
65
40
13
10000
10000
-6
MinMax
133
89
44
82
44
0
32
77
47
15
10000
10000
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
28/Jul./1998
ELECTRIC
( / 22 )
7
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