Mitsubishi MH8S64DALD-8, MH8S64DALD-6, MH8S64DALD-7 Datasheet

Preliminary Spec.
DESCRIPTION
for easy interchange or addition of modules.
APPLICATION
4096 refresh cycle /64ms
(Component SDRAM)
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
The MH8S64DALD is 8388608 - word by 64-bit Synchronous DRAM module. This consists of eight industry standard 8Mx8 Synchronous DRAMs in TSOP and one industory standard EEPROM in TSSOP. The mounting of TSOP on a card edge Dual Inline package provides any application where high densities and large quantities of memory are required. This is a socket type - memory modules, suitable
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
85pin
94pin
1pin
10pin
FEATURES
Frequency
133MHz
-7
-8
Utilizes industry standard 8M x 8 Synchronous DRAMs TSOP and industry standard EEPROM in TSSOP
168-pin (84-pin dual in-line package)
single 3.3V±0.3V power supply Max. Clock frequency -6:133MHz,-7,8:100MHz
Fully synchronous operation referenced to clock rising edge
4 bank operation controlled by BA0,1(Bank Address) /CAS latency- 2/3(programmable) Burst length- 1/2/4/8/Full Page(programmable)
100MHz
CLK Access Time
5.4ns(CL=3)-6
6.0ns(CL=2)
6.0ns(CL=3)100MHz
95pin
124pin
125pin
11pin
40pin
41pin
Burst type- sequential / interleave(programmable) Column access - random
Auto precharge / All bank precharge controlled by A10
Auto refresh and Self refresh
LVTTL Interface Discrete IC and module design conform to
PC100/PC133 specification.
PC main memory
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168pin
84pin
17.Sep.1999
Preliminary Spec.
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
PIN NO. PIN NAME PIN NO. PIN NAME PIN NO. PIN NAME PIN NO. PIN NAME
1 2 DQ0 44 NC 3 DQ1 45 /S2 4 DQ2 46 DQMB2 5 DQ3 47 DQMB3 6 VDD 48 NC 7 DQ4 49 VDD 8 DQ5 50 NC
9 DQ6 51 NC 10 DQ7 52 11 DQ8 53 12 13 DQ9 55 DQ16 14 DQ10 56 DQ17 15 DQ11 57 DQ18 16 DQ12 58 DQ19 17 DQ13 59 VDD 18 VDD 60 DQ20 19 DQ14 61 20 DQ15 62 21 22 64 VSS 23 VSS 65 DQ21 24 NC 66 DQ22 25 NC 67 DQ23 26 VDD 68 27 28 DQMB0 70 DQ25 29 DQMB1 71 DQ26 30 /S0 72 DQ27 31 NC 73 VDD 32 VSS 74 DQ28 33 A0 75 DQ29 34 A2 76 DQ30 35 A4 77 DQ31 36 A6 78 VSS 37 A8 79 38 39 40 VDD 82 SDA 41 VDD 83 SCL 42 CK0 84 VDD
VSS
VSS
NC NC
/WE0
A10
BA1
43
54 VSS
63
69 DQ24
80 NC 81
MH8S64DALD -6,-7,-8
VSS 85
86 87 88 89 90 91 92 93
NC NC 95
NC NC NC
VSS 110
CK2
WP
94
96 97 98
99 100 101 102 103 104 105 106 107 108 109
111 112 113 114 115 116 117 118 119 120 121 122 123 124 125
126
MITSUBISHI LSIs
VSS 127 DQ32 128 DQ33 129 DQ34 130 DQMB6 DQ35 131 DQMB7
VDD 132 DQ36 133 VDD DQ37 134 NC DQ38 135 NC DQ39 136 DQ40 137
VSS 138 VSS DQ41 139 DQ48 DQ42 140 DQ49 DQ43 141 DQ50 DQ44 142 DQ51 DQ45 143 VDD
VDD 144 DQ52 DQ46 145 NC DQ47 146 NC
NC NC
VSS 149 DQ53
NC 150 DQ54 NC 151 DQ55
VDD 152 VSS
/CAS 153 DQ56 DQMB4 154 DQ57 DQMB5 155 DQ58
NC
/RAS 157 VDD
VSS 158 DQ60
A1 159 DQ61 A3 160 DQ62 A5 161 DQ63 A7 162 VSS A9 163
BA0
A11
VDD 166 SA1
CK1 167 SA2
NC
147 NC 148 VSS
156 DQ59
164 NC 165 SA0
168 VDD
VSS
CKE0
NC
NC
NC NC
CK3
NC = No Connection
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Preliminary Spec.
Block Diagram
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
/S0
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
DQMB0
DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7
DQMB1
DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15
/S2
DQMB2 DQMB6
DQ16 DQ17 DQ18 DQ19 DQ20 DQ21 DQ22
DQ23
DQMB3
DQ24 DQ25 DQ26 DQ27 DQ28 DQ29 DQ30
DQ31
DQM /CS
I/O 0 I/O 1 I/O 2 I/O 3
I/O 4 I/O 5 I/O 6 I/O 7
DQM /CS
I/O 0 I/O 1 I/O 2 I/O 3
I/O 4 I/O 5 I/O 6 I/O 7
DQM /CS
I/O 0 I/O 1 I/O 2
I/O 3 I/O 4 I/O 5 I/O 6 I/O 7
DQM /CS
I/O 0 I/O 1
I/O 2 I/O 3 I/O 4 I/O 5 I/O 6 I/O 7
D0
D1
D2
D3
DQMB4
DQMB5
DQMB7
DQ32 DQ33 DQ34 DQ35 DQ36 DQ37 DQ38 DQ39
DQ40 DQ41 DQ42 DQ43 DQ44 DQ45 DQ46 DQ47
DQ48 DQ49 DQ50 DQ51 DQ52 DQ53 DQ54
DQ55
DQ56 DQ57 DQ58 DQ59 DQ60 DQ61 DQ62
DQ63
DQM /CS
I/O 0 I/O 1 I/O 2
I/O 3 I/O 4 I/O 5 I/O 6 I/O 7
DQM /CS
I/O 0 I/O 1 I/O 2
I/O 3 I/O 4 I/O 5 I/O 6
I/O 7
DQM /CS
I/O 0 I/O 1 I/O 2 I/O 3 I/O 4 I/O 5 I/O 6 I/O 7
DQM /CS
I/O 0 I/O 1
I/O 2 I/O 3 I/O 4 I/O 5 I/O 6 I/O 7
D4
D5
D6
D7
BA0,BA1,A<11:0>
MIT-DS-0339-0.0
/RAS /CAS
/WE
Vcc Vss
D0 - D7 D0 - D7
D0 - D7 D0 - D7
D0 - D7 D0 - D7
CKE0
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CK0
CK2
CK1
D0 - D7
4SDRAMs+3.3pF cap. 4SDRAMs+3.3pF cap.
CK3
SCL SDA
WP
47K
SERIAL PD
A0 A1 A2
SA0 SA1 SA2
17.Sep.1999
Preliminary Spec.
Serial Presence Detect Table I
SDRAM Cycletime at Max. Supported CAS Latency (CL).
Non-PARITY
Minimum Clock Delay,Back to Back Random Column Addresses
1/2/4/8/Full page
non-buffered,non-registered
Precharge All,Auto precharge
SDRAM Access form Clock(2nd highest CAS latency)
SDRAM Access form Clock(3rd highest CAS latency)
-8-8-7
-7
-7,-8
-6
-7,-8
-6
-7,-8
-6
-6
-6
-7,-8
-6
-7,-8-6-7,-8-6-7,-8
-6
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
Byte
0
Defines # bytes written into serial memory at module mfgr
1 2 3 4 5 6 7 8 9
10
11 12 13 14 15 16 17
18
19 20 21 22
23
24
25 SDRAM Cycle time(3rd highest CAS latency) N/A 00 26
27
28
29
30
Total # bytes of SPD memory device
# Column Addresses on this assembly
Voltage interface standard of this assembly LVTTL 01
DIMM Configuration type (Non-parity,Parity,ECC)
SDRAM Cycle time(2nd highest CAS latency)
Function described
Fundamental memory type
# Row Addresses on this assembly
# Module Banks on this assembly
Data Width of this assembly...
... Data Width continuation
Cycle time for CL=3
SDRAM Access from Clock
tAC for CL=3
Refresh Rate/Type
SDRAM width,Primary DRAM
Error Checking SDRAM data width
Burst Lengths Supported
# Banks on Each SDRAM device
CAS# Latency
CS# Latency
Write Latency
SDRAM Module Attributes
SDRAM Device Attributes:General
Cycle time for CL=2
tAC for CL=2
Precharge to Active Minimum
Row Active to Row Active Min.
RAS to CAS Delay Min
Active to Precharge Min
SPD enrty data SPD DATA(hex)
128
256 Bytes
SDRAM
A0-A11 0C
A0-A8 09
1BANK 01
x64 40
0 00
10ns
5.4ns 6ns
self refresh(15.625uS)
x8
N/A
1 01
4bank
3
2/3
0 0
N/A 10ns 13ns
N/A
6ns 7ns 70
N/A 00
22.5ns 17 20ns 14
15ns 0F 20ns 14
22.5ns 17 20ns 14 45ns 2D
50ns 32
80 08 04
757.5ns A0 54 60
00 80
08 00
8F 04 04 06
01 01 00
0E
00 A0 D0
00
60
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Preliminary Spec.
Serial Presence Detect Table II
4D483853363444414C442D36202020202020
-7
-6,-8
-6
-7,-8-6-7,-8-6-7,-8
-6
-7,-8
-6
-7,-8
4D483853363444414C442D37202020202020
4D483853363444414C442D38202020202020
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
31 Density of each bank on module 64MByte 10 32 Command and Address signal input setup time
33 Command and Address signal input hold time
34 Data signal input setup time
35
36-61
62 SPD Revision
63 Checksum for bytes 0-62
64-71
72 Manufacturing location
Superset Information (may be used in future)
Data signal input hold time
Manufactures Jedec ID code per JEP-108E
1.5ns 15 2ns 20
0.8ns 08 1ns 10
2ns
0.8ns 08 1ns 10
option 00
JEDEC2
rev 1.2A 12
Check sum for -6 92 Check sum for -7 05
Check sum for -8 45
MITSUBISHI 1CFFFFFFFFFFFFFF
Miyoshi,Japan 01
Tajima,Japan 02
NC,USA 03
Germany 04
MH8S64DALD-6
151.5ns 20
02
73-90 Manufactures Part Number
91-92 Revision Code PCB revision rrrr 93-94 Manufacturing date year/week code yyww 95-98 Assembly Serial Number serial number ssssssss
99-125
126 Intetl specification frequency 100MHz 64
127 Intel specification CAS# Latency support
128+ Unused storage locations open 00
Manufacture Specific Data
MH8S64DALD-7
MH8S64DALD-8
option
00
AFCL=2/3,AP,CK0,2
ADCL=3,AP,CK0,2
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Preliminary Spec.
Power Supply
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
PIN FUNCTION
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
CK (CK0 ~ CK3)
CKE0 Input
/S (/S0,2)
/RAS,/CAS,/WE Input Combination of /RAS,/CAS,/WE defines basic commands.
A0-11 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 becomes asynchronous input.Self refresh is maintained as long as CKE is low.
Chip Select: When /S is high,any command means No Operation.
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 A0-8.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 high at a precharge command, all banks are precharged.
BA0,1 Input
DQ0-63
DQMB0-7 Input
Vdd,Vss
SCL
SDA
SA0-3
Input/Output
Input
Output
Input
Bank Address:BA0,1 is not simply BA.BA specifies the bank to which a command is applied.BA0,1 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.
Serial clock for serial PD
Serial data for serial PD
Address input for serial PD
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Preliminary Spec.
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
BASIC FUNCTIONS
The MH8S64DALD 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.
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Preliminary Spec.
Precharge All Bank
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
COMMAND TRUTH TABLE
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
COMMAND
Deselect DESEL H X H X X X X X X
No Operation NOP H X L H H H X X X
Row Adress Entry &
Bank Activate
Single Bank Precharge PRE H X L L H L V L X
Column Address Entry
& Write
Column Address Entry
& Write with Auto-
Precharge
Column Address Entry
& Read
Column Address Entry
& Read with Auto
Precharge
MNEMONIC
ACT H X L L H H V V V
PREA
WRITE
WRITEA H X L H L L V H V
READ H X L H L H V L V
READA H X L H L H V H V
CKE
CKE
n-1
H X L L H L X H X H X L H L L V L V
n
/S
/RAS
/CAS
/WE BA0,1 A10
A11
X X
V
X X
V
V
V
V
A0-9
Auto-Refresh REFA H H L L L H X X X
Self-Refresh Entry REFS H L L L L H X X X
Self-Refresh Exit REFSX L H H X X X X X X
L H L H H H X X X
Burst Terminate TERM
Mode Register Set
MRS
H X L H H L X X X H X L L L L L 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
X X X X X L
V*1
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Preliminary Spec.
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
FUNCTION TRUTH TABLE
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
Current State /S /RAS /CAS /WE Address
IDLE H X X X X DESEL NOP
L H H H X NOP NOP L H H L L H L X L L H H L L H L L L L H X REFA
L L L L
ROW ACTIVE H X X X X DESEL NOP
L H H H X NOP NOP L H H L BA
L H L H BA,CA,A10 READ/READA
L H L L BA,CA,A10
L L H H BA,RA ACT Bank Active/ILLEGAL*2 L L H L BA,A10 PRE/PREA Precharge/Precharge All L L L H X REFA ILLEGAL
L L L L
READ H X X X X DESEL NOP(Continue Burst to END)
L H H H X NOP NOP(Continue Burst to END) L H H L
L H L H BA,CA,A10 READ/READA
L H L L BA,CA,A10 WRITE/WRITEA
BA TBST ILLEGAL*2 BA,CA,A10
BA,RA BA,A10 PRE/PREA NOP*4
Op-Code, Mode-Add
Op-Code, Mode-Add
BA
Command
READ/WRITE ILLEGAL*2
ACT Bank Active,Latch RA
Auto-Refresh*5
MRS Mode Register Set*5
TBST
WRITE/
WRITEA
MRS ILLEGAL
TBST Terminate Burst
NOP Begin Read,Latch CA, Determine Auto-Precharge Begin Write,Latch CA, Determine Auto-Precharge
Terminate Burst,Latch CA, Begin New Read,Determine Auto-Precharge*3 Terminate Burst,Latch CA, Begin Write,Determine Auto­Precharge*3
Action
MIT-DS-0339-0.0
L L H H BA,RA ACT Bank Active/ILLEGAL*2 L L H L BA,A10 PRE/PREA Terminate Burst,Precharge L L L H X REFA ILLEGAL
L L L L
Op-Code, Mode-Add
MITSUBISHI
MRS ILLEGAL
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Preliminary Spec.
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
FUNCTION TRUTH TABLE(continued)
MITSUBISHI LSIs
Current State /S /RAS /CAS /WE Address
WRITE H X X X X DESEL NOP(Continue Burst to END)
L H H H X NOP NOP(Continue Burst to END) L H H L BA TBST Terminate Burst
L H L H BA,CA,A10
L H L L BA,CA,A10
L L H H BA,RA ACT Bank Active/ILLEGAL*2 L L H L BA,A10 PRE/PREA Terminate Burst,Precharge L L L H X REFA ILLEGAL
L L L L
READ with H X X X X DESEL NOP(Continue Burst to END)
AUTO L H H H X NOP NOP(Continue Burst to END)
PRECHARGE L H H L BA TBST ILLEGAL
L H L H BA,CA,A10 READ/READA ILLEGAL L H L L BA,CA,A10
L L H H BA,RA ACT Bank Active/ILLEGAL*2
Op-Code, Mode-Add
Command
READ/READA
WRITE/
WRITEA
MRS ILLEGAL
WRITE/
WRITEA
Action
Terminate Burst,Latch CA, Begin Read,Determine Auto­Precharge*3 Terminate Burst,Latch CA, Begin Write,Determine Auto­Precharge*3
ILLEGAL
L L H L BA,A10 PRE/PREA ILLEGAL*2 L L L H X REFA ILLEGAL
L L L L
WRITE with H X X X X DESEL NOP(Continue Burst to END)
AUTO L H H H X NOP NOP(Continue Burst to END)
PRECHARGE L H H L
L H L H BA,CA,A10 READ/READA ILLEGAL L H L L BA,CA,A10 L L H H
L L H L BA,A10 PRE/PREA ILLEGAL*2 L L L H X REFA ILLEGAL
L L L L
Op-Code, Mode-Add
BA
BA,RA
Op-Code, Mode-Add
MRS ILLEGAL
TBST ILLEGAL
WRITE/
WRITEA
ACT Bank Active/ILLEGAL*2
MRS ILLEGAL
ILLEGAL
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Preliminary Spec.
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
FUNCTION TRUTH TABLE(continued)
MITSUBISHI LSIs
Current State /S /RAS /CAS /WE Address
PRE - H X X X X DESEL NOP(Idle after tRP)
CHARGING L H H H X NOP NOP(Idle after tRP)
L H H L BA TBST ILLEGAL*2 L H L X BA,CA,A10 READ/WRITE ILLEGAL*2 L L H H BA,RA ACT ILLEGAL*2 L L H L BA,A10 PRE/PREA NOP*4(Idle after tRP) L L L H X REFA ILLEGAL
Op-Code,
L L L L
Mode-Add
ROW H X X X X DESEL NOP(Row Active after tRCD
ACTIVATING L H H H X NOP NOP(Row Active after tRCD
L H H L BA TBST ILLEGAL*2 L H L X BA,CA,A10 READ/WRITE ILLEGAL*2
L L H H BA,RA ACT ILLEGAL*2 L L H L BA,A10 PRE/PREA ILLEGAL*2
L L L H X REFA ILLEGAL
Command
MRS ILLEGAL
Action
L L L L
WRITE RE- H X X X X DESEL NOP
COVERING L H H H X NOP NOP
L H H L BA TBST ILLEGAL*2 L H L X BA,CA,A10 READ/WRITE ILLEGAL*2 L L H H BA,RA ACT ILLEGAL*2
L L H L BA,A10 PRE/PREA ILLEGAL*2 L L L H X REFA ILLEGAL
L L L L
Op-Code,
MRS ILLEGAL
Mode-Add
Op-Code,
MRS ILLEGAL
Mode-Add
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Preliminary Spec.
1. All entries assume that CKE was High during the preceding clock cycle and the current
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
FUNCTION TRUTH TABLE(continued)
Current State /S /RAS /CAS /WE Address Command Action
RE- H X X X X DESEL NOP(Idle after tRC)
MITSUBISHI LSIs
FRESHING L H H H X NOP
L H H L BA TBST ILLEGAL L H L X BA,CA,A10 READ/WRITE ILLEGAL L L H H BA,RA ACT ILLEGAL L L H L BA,A10 PRE/PREA ILLEGAL L L L H X REFA ILLEGAL
L L L L
MODE H X X X X DESEL NOP(Idle after tRSC)
REGISTER L H H H X NOP NOP(Idle after tRSC)
SETTING L H H L BA TBST ILLEGAL
L H L X BA,CA,A10 READ/WRITE ILLEGAL L L H H BA,RA ACT ILLEGAL L L H L BA,A10 PRE/PREA ILLEGAL L L L H X REFA ILLEGAL
L L L L
Op-Code,
MRS ILLEGAL
Mode-Add
Op-Code,
MRS ILLEGAL
Mode-Add
NOP(Idle after tRC)
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.
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Preliminary Spec.
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
FUNCTION TRUTH TABLE FOR CKE
MITSUBISHI LSIs
Current State
SELF - H X X X X X X
REFRESH*1 L H H X X X X
POWER H X X X X X X
DOWN L H X X X X X
ALL BANKS H H X X X X X
IDLE*2 H L L L L H X
CKE
CKE
n-1
L H L H H H X L H L H H L X L H L H L X X
L H L L X X X L L X X X X X
L L X X X X X
H L H X X X X H L L H H H X H L L H H L X H L L H L X X
H L L L X X X
n
/RAS /CAS /WE Add
/S
Action
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
L X X X X X X
ANY STATE H H X X X X X
other than H L X X X X X
listed above L H X X X X X
L L X X X X X
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.
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Preliminary Spec.
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
SIMPLIFIED STATE DIAGRAM
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
SELF
REFRESH
REFS
REFSX
WRITE
SUSPEND
MODE
REGISTER
SET
CLK
SUSPEND
TBST(for Full Page) TBST(for Full Page)
CKEL
WRITE
CKEH
MRS
CKEH
WRITE
CKEL
WRITEA
WRITE
IDLE
REFA
CKEL
CKEH
ACT
ROW
ACTIVE
READ
READA
READ
POWER
DOWN
READ
AUTO
REFRESH
CKEL
CKEH
READ
SUSPEND
SUSPEND
POWER APPLIED
MIT-DS-0339-0.0
WRITEA
WRITEA READA
CKEL
CKEH
POWER
ON
WRITEA
WRITEA
PRE PRE
PRE
CHARGE
PRE
PRE
READA
READA
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CKEL
CKEH
READA
SUSPEND
Automatic Sequence Command Sequence
17.Sep.1999
Preliminary Spec.
After these sequence, the SDRAM is idle state and ready for normal operation.
MODE REGISTER
LENGTH
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
POWER ON SEQUENCE
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= 0 BT= 1
1 2 4 8 R
R R
FP
SEQUENTIAL INTERLEAVED
V
1 2 4 8 R
R R R
LATENCY
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 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0BA1BA0
0 0
/CAS LATENCY
WM
R R 2 3 R R R R
0 0
LTMODE BT BL
BURST
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-0339-0.0
0
1
BURST SINGLE BIT
MITSUBISHI
R:Reserved for Future Use FP: Full Page
ELECTRIC
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17.Sep.1999
Preliminary Spec.
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
CK
Command
Read
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
Write
Address
DQ
Initial Address
A2 A1 A0
0 0 0 0 0 1 0 1 0 0 1 1 1 0 0
CL= 3 BL= 4
BL
8
Y
Q0 Q1 Q2 Q3
/CAS Latency Burst Length Burst Length
Burst Type
Column Addressing
Sequential Interleaved
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 1 2 3 4 5 6 7 0 1 0 3 2 5 4 7 6 2 3 4 5 6 7 0 1 2 3 0 1 6 7 4 5 3 4 5 6 7 0 1 2 3 2 1 0 7 6 5 4 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3
Y
D0 D1 D2 D3
1 0 1 1 1 0
1 1 1
- 0 0
- 0 1
- 1 0
- 1 1
- - 0
- - 1
5 6 7 0 1 2 3 4 5 4 7 6 1 0 3 2 6 7 0 1 2 3 4 5 6 7 4 5 2 3 0 1
7 0 1 2 0 1 2 3 1 2 3 0
4
2 3 0 1 3 0 0 1
2
1 0
3 4 5 6 3 2 1 0
1 2
7 6 5 4 0 1 2 3 1 0 3 2 2 3 0 1 3 2 0 1 1 0
1 0
MIT-DS-0339-0.0
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17.Sep.1999
Preliminary Spec.
ACT
OPERATION DESCRIPTION
(x8) . 1st output data is available after the /CAS Latency from the READ. The consecutive data
command can be issued after (BL + tRP) from the previous READA. In any case, tRCD+BL >
MITSUBISHI LSIs
MH8S64DALD -6,-7,-8
536870912-BIT (8388608 - WORD BY 64-BIT)Synchronous DRAM
BANK ACTIVATE
One of four banks is activated by an ACT command. An bank is selected by BA0-1. A row is selected by A0-11. Multiple banks can be active state concurrently by issuing multiple ACT commands. Minimum activation interval between one bank and another bank is tRRD.
PRECHARGE
An open bank is deactivated by a PRE command. A bank to be deactivated is designated by BA0-1. When multiple banks are active, a precharge all command (PREA, PRE + A10=H) deactivates all of open banks at the same time. BA0-1 are "Don't Care" in this case. Minimum delay time of an ACT command after a PRE command to the same bank is tRP.
Bank Activation and Precharge All (BL=4, CL=2)
CK
Command
A0-9,11
A10
BA0,1
DQ
ACT
Xa
Xa
00
tRRD
ACT
Xb
Xb
01
tRCD
READ
Yb
0
01
PRE
tRP
1
Qa0 Qa1 Qa2 Qa3
Precharge all
Xa
Xa
00
READ
A READ command can be issued to any active bank. The start address is specified by A0-8
length is defined by the Burst Length. The address sequence of the burst data is defined by the Burst Type. Minimum delay time of a READ command after an ACT command to the same bank is tRCD. When A10 is high at a READ command, auto-precharge (READA) is performed. Any command (READ, WRITE, PRE, ACT, TBST) to the same bank is inhibited till the internal precharge is complete. The internal precharge starts at the BL after READA. The next ACT
tRASmin must be met.
MIT-DS-0339-0.0
MITSUBISHI
17.Sep.1999
ELECTRIC
17
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