Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
The MH32S72AVJA is 33554432 - word x 72-bit Synchronous
DRAM module. This consist of eighteen industry standard
32M x 4 Synchronous DRAMs in TSOP.
The TSOP 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.
MITSUBISHI LSIs
MH32S72AVJA-6
85pin
1pin
Max.
Utilizes industry standard 32M X 4 Synchronous DRAMs in
TSOP package , industry standard Resistered buffer in TSSOP
package,industry standard PLL in TSSOP package
Single 3.3V +/- 0.3V supply
Max.Clock frequency 133MHz
Fully synchronous operation referenced to clock rising edge
4-bank operation controlled by BA0,BA1(Bank Address)
/CAS latency -2/3(programmable,at buffer mode)
LVTTL Interface
Burst length 1/2/4/8/Full Page(programmable)
Burst type- Sequential and interleave burst (programmable)
Random column access
Burst Write / Single Write(programmable)
Auto precharge / All bank precharge controlled by A10
Auto refresh and Self refresh
4096 refresh cycles every 64ms
Discrete IC and module design conform to
PC133 specification.
Access Time from CLK
[component level]
5.4ns
(CL = 4 at Latch mode)
94pin
95pin
124pin
125pin
10pin
11pin
40pin
41pin
Main memory or graphic memory in computer systems
MIT-DS-0376-0.2
MITSUBISHI
ELECTRIC
168pin
84pin
17.Mar.2000
1
Preliminary Spec.
/WE
Some contents are subject to change without notice.
MITSUBISHI LSIs
MH32S72AVJA-6
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
PIN NO.PIN NAMEPIN NO.PIN NAMEPIN NO.PIN NAMEPIN NO.PIN NAME
Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MITSUBISHI LSIs
MH32S72AVJA-6
Add
CKE0
/S0,2
DQM0-7
/W
/RAS
/CAS
10K
VDD
REGE
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
CB0
CB1
CB2
CB3
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
RCKE0
RDQM0-7
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
CB4
CB5
CB6
CB7
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
From PLL
CK0
CK1 - CK3Terminated
RCKE0
R/S0
R/S2
PLL
D0-17
D0-4,9-13
D5-8,14-17
MIT-DS-0376-0.2
D0-1
D2-4
D5-6
D7-8
D9-10
D11-13
D14-15
D16-17
MITSUBISHI
ELECTRIC
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
SCL
WP
47K
VDD
VSS
SERIAL PD
A0 A1 A2
SA0 SA1 SA2
17.Mar.2000
SDA
D0 to D17
D0 to D17
3
Preliminary Spec.
PIN FUNCTION
CKE0
Register enable:When REGE is low,All control signals and
Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
MITSUBISHI LSIs
MH32S72AVJA-6
CK0
/S0,2
/RAS,/CAS,/W
A0-11
Input
Input
Input
Input
Input
Master Clock:All other inputs are referenced to the rising
edge of CK
Clock Enable:CKE controls internal clock.When CKE is
low,internal clock for the following cycle is ceased. CKE is
also used to select auto / self refresh. After self refresh
mode is started, CKE E becomes asynchronous input.Self
refresh is maintained as long as CKE is low.
Chip Select: When /S is high,any command means
No Operation.
Combination of /RAS,/CAS,/W defines basic
commands.
A0-11 specify the Row/Column Address in conjunction with
BA.The Row Address is specified by A0-11.The Column
Address is specified by A0-10.A10 is also used to indicate
precharge option.When A10 is high at a read / write
command, an auto precharge is performed. When A10 is
BA0-1
DQ0-63
CB0-7
DQM0-7
Vdd,Vss
REGE
Input
Input/Output
Input
Power Supply
Input
high at a precharge command, both banks are precharged.
Bank Address:BA0,1 is specifies the four bank to which
a command is applied.BA must be set with ACT ,PRE
,READ ,WRITE commands
Data In and Data out are referenced to the rising edge
of CK
Din Mask/Output Disable:When DQMB is high in burst
write.Din for the current cycle is masked.When DQMB is high
in burst read,Dout is disabled at the next but one cycle.
Power Supply for the memory mounted
module.
address are buffered. (Buffer mode) When REGE is
high,All control and address are latched. (Latch mode)
MIT-DS-0376-0.2
MITSUBISHI
ELECTRIC
17.Mar.2000
4
Preliminary Spec.
BASIC FUNCTIONS
Some contents are subject to change without notice.
MITSUBISHI LSIs
MH32S72AVJA-6
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
The MH32S72AVJA provides basic functions,bank(row)activate,burst read / write,
bank(row)precharge,and auto / self refresh.
Each command is defined by control signals of /RAS,/CAS and /WE at CK rising edge.
In addition to 3 signals,/S,CKE and A10 are used as chip select,refresh option,and
precharge option,respectively.
To know the detailed definition of commands please see the command truth table.
CK
/S
Chip Select : L=select, H=deselect
/RAS
/CAS
/WE
CKE
A10
Command
Command
Command
Refresh Option @refresh command
Precharge Option @precharge or read/write command
define basic commands
Activate(ACT) [/RAS =L, /CAS = /WE =H]
ACT command activates a row in an idle bank indicated by BA.
Read(READ) [/RAS =H,/CAS =L, /WE =H]
READ command starts burst read from the active bank indicated by BA.First output
data appears after /CAS latency. When A10 =H at this command,the bank is
deactivated after the burst read(auto-precharge, READA).
Write(WRITE) [/RAS =H, /CAS = /WE =L]
WRITE command starts burst write to the active bank indicated by BA. Total data
length to be written is set by burst length. When A10 =H at this command, the bank is
deactivated after the burst write(auto-precharge,WRITEA).
Precharge(PRE) [/RAS =L, /CAS =H,/WE =L]
PRE command deactivates the active bank indicated by BA. This command also
terminates burst read / write operation. When A10 =H at this command, both banks
are deactivated(precharge all, PREA).
Auto-Refresh(REFA) [/RAS =/CAS =L, /WE =CKE =H]
REFA command starts auto-refresh cycle. Refresh address including bank address
are generated internally. After this command, the banks are precharged automatically.
MIT-DS-0376-0.2
MITSUBISHI
ELECTRIC
17.Mar.2000
5
Preliminary Spec.
Precharge All Bank
Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
COMMAND TRUTH TABLE
MITSUBISHI LSIs
MH32S72AVJA-6
COMMAND
DeselectDESELHXHXXXXXX
No OperationNOPHXLHHHXXX
Row Adress Entry &
Bank Activate
Single Bank PrechargePREHXLLHLVLX
Column Address Entry
& Write
Column Address Entry
& Write with Auto-
Precharge
Column Address Entry
& Read
Column Address Entry
& Read with Auto
Precharge
MNEMONIC
ACTHXLLHHVVV
PREA
WRITE
WRITEAHXLHLLVHV
READHXLHLHVLV
READAHXLHLHVHV
CKE
CKE
n-1
HXLLHLXHX
HXLHLLVLV
n
/S
/RAS
/CAS
/WE BA0,1A10
A11
X
X
V
X
X
V
V
V
V
A0-9
Auto-RefreshREFAHHLLLHXXX
Self-Refresh EntryREFSHLLLLHXXX
Self-Refresh ExitREFSXLHHXXXXXX
LHLHHHXXX
Burst TerminateTERM
Mode Register Set
MRS
HXLHHLXXX
HXLLLLLL
X
X
X
X
X
L
H =High Level, L = Low Level, V = Valid, X = Don't Care, n = CK cycle number
NOTE:
1.A7-9 = 0, A0-6 = Mode Address
V*1
MIT-DS-0376-0.2
MITSUBISHI
ELECTRIC
17.Mar.2000
6
Preliminary Spec.
Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
FUNCTION TRUTH TABLE
MITSUBISHI LSIs
MH32S72AVJA-6
Current State/S/RAS /CAS/WEAddress
IDLEHXXXXDESELNOP
LHHHXNOPNOP
LHHL
LHLX
LLHH
LLHL
LLLHXREFA
LLLL
ROW ACTIVEHXXXXDESELNOP
LHHHXNOPNOP
LHHLBA
LHLHBA,CA,A10READ/READA
LHLLBA,CA,A10
LLHHBA,RAACTBank Active/ILLEGAL*2
LLHLBA,A10PRE/PREAPrecharge/Precharge All
LLLHXREFAILLEGAL
ABBREVIATIONS:
H = Hige Level, L = Low Level, X = Don't Care
BA = Bank Address, RA = Row Address, CA = Column Address, NOP = No Operation
NOTES:
clock cycle.
2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA,
depending on the state of that bank.
3. Must satisfy bus contention, bus turn around, write recovery requirements.
4. NOP to bank precharging or in idle state.May precharge bank indicated by BA.
5. ILLEGAL if any bank is not idle.
ILLEGAL = Device operation and / or date-integrity are not guaranteed.
MIT-DS-0376-0.2
MITSUBISHI
17.Mar.2000
ELECTRIC
10
Preliminary Spec.
Some contents are subject to change without notice.
MH32S72AVJA-6
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
FUNCTION TRUTH TABLE FOR CKE
MITSUBISHI LSIs
Current State
SELF - HXXXXXX
REFRESH*1LHHXXXX
POWERHXXXXXX
DOWNLHXXXXX
ALL BANKSHHXXXXX
IDLE*2HLLLLHX
CKE
CKE
n-1
LHLHHHX
LHLHHLX
LHLHLXX
LHLLXXX
LLXXXXX
LLXXXXX
HLHXXXX
HLLHHHX
HLLHHLX
HLLHLXX
HLLLXXX
n
/RAS /CAS/WEAddAction
/S
INVALID
Exit Self-Refresh(Idle after tRC)
Exit Self-Refresh(Idle after tRC)
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Maintain Self-Refresh)
INVALID
Exit Power Down to Idle
NOP(Maintain Self-Refresh)
Refer to Function Truth Table
Enter Self-Refresh
Enter Power Down
Enter Power Down
ILLEGAL
ILLEGAL
ILLEGAL
LXXXXXX
ANY STATEHHXXXXX
other thanHLXXXXX
listed aboveLHXXXXX
LLXXXXX
Refer to Current State = Power Down
Refer to Function Truth Table
Begin CK0 Suspend at Next Cycle*3
Exit CK0 Suspend at Next Cycle*3
Maintain CK0 Suspend
ABBREVIATIONS:
H = High Level, L = Low Level, X = Don't Care
NOTES:
1. CKE Low to High transition will re-enable CK and other inputs asynchronously.
A minimum setup time must be satisfied before any command other than EXIT.
2. Power-Down and Self-Refresh can be entered only from the All banks idle State.
3. Must be legal command.
MIT-DS-0376-0.2
MITSUBISHI
17.Mar.2000
ELECTRIC
11
Preliminary Spec.
POWER ON SEQUENCE
After these sequence, the SDRAM is idle state and ready for normal operation.
MODE REGISTER
LENGTH
BURST
LATENCY
Some contents are subject to change without notice.
MITSUBISHI LSIs
MH32S72AVJA-6
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
Before starting normal operation, the following power on sequence is necessary to prevent
a SDRAM from damaged or malfunctioning.
1. Apply power and start clock. Attempt to maintain CKE high, DQMB0-7 high and NOP
condition at the inputs.
2. Maintain stable power, stable clock, and NOP input conditions for a minimum of 200us.
3. Issue precharge commands for all banks. (PRE or PREA)
4. After all banks become idle state (after tRP), issue 8 or more auto-refresh commands.
5. Issue a mode register set command to initialize the mode register.
Burst Length, Burst Type and /CAS Latency can be programmed by setting the mode
register(MRS). The mode register stores these date until the next MRS command, which
may be issue when both banks are in idle state. After tRSC from a MRS command, the
SDRAM is ready for new command.
CK
/S
/RAS
/CAS
/WE
BT= 0BT= 1
1
2
4
8
R
R
R
FP
SEQUENTIAL
INTERLEAVED
V
1
2
4
8
R
R
R
R
MODE
00
CL
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
A11 A10 A9A8A7 A6A5A4 A3A2 A1 A0BA1BA0
00
/CAS LATENCY
WM
R
R
2
3
R
R
R
R
00
LTMODEBTBL
BURST
TYPE
BA0,1 A11-0
BL
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0
1
WRITE
MODE
MIT-DS-0376-0.2
0
1
BURST
SINGLE BIT
MITSUBISHI
R:Reserved for Future Use
FP: Full Page
ELECTRIC
17.Mar.2000
12
Preliminary Spec.
Write
Some contents are subject to change without notice.
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
tCLCK Low pulse width
tTTransition time of CK
tISInput Setup time(all inputs)
tIHInput Hold time(all inputs)
tRCRow Cycle time
tRCDRow to Column Delay
tRASRow Active time
tRPRow Precharge time
tWR
Write Recovery time
tRRDAct to Act Deley time
tRSCMode Register Set Cycle time
tSRX
tPDEPower Down Exit time
tREFRefresh Interval time
CL=3
CL=47.5ns
Min.Max.
10
2.5
2.5
1
1.5
0.8
67.5
20
45
20
15
15
15
7.5
7.5
MITSUBISHI LSIs
Limits
Unit
10
100K
64
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CK
Signal
MIT-DS-0376-0.2
MITSUBISHI
ELECTRIC
1.4V
1.4V
Any AC timing is
referenced to the input
signal crossing
through 1.4V.