Hynix HYMD264G726D(L)4-M/K/H/L series Profile registered 184-pin doubl

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Hynix HYMD264G726D(L)4-M/K/H/L series Profile registered 184-pin doubl

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64Mx72 bits Profile Registered SDRAM DIMM HYMD264G726D(L)4M-M/K/H/L
Hynix HYMD264G726D(L)4-M/K/H/L series Profile registered 184-pin double data rate Synchronous DRAM Dual In-Line Memory Modules (DIMMs) which organized high-speed memory arrays. Hynix HYMD264G726D(L)4-M/K/H/L series consists eighteen SDRAM 400mil TSOP packages 184pin glass-epoxy substrate. Hynix HYMD264G726D(L)4-M/K/H/L series provide high performance 8-byte interface 5.25" width form factor industry standard. suitable easy interchange addition. Hynix HYMD264G726D(L)4-M/K/H/L series designed high speed 133MHz offers fully synchronous operations referenced both rising falling edges differential clock inputs. While addresses control inputs latched rising edges clock, Data, Data strobes Write data masks inputs sampled both rising falling edges data paths internally pipelined 2-bit prefetched achieve very high bandwidth. input output voltage levels compatible with SSTL_2. High speed frequencies, programmable latencies burst lengths allow variety device operation high performance memory system. Hynix HYMD264G726D(L)4-M/K/H/L series incorporates SPD(serial presence detect). Serial presence detect function implemented serial 2,048-bit EEPROM. first bytes serial data programmed Hynix identify DIMM type, capacity other information DIMM last bytes available customer.
FEATURES
512MB (64M Profile Registered DIMM based 64Mx4 SDRAM JEDEC Standard 184-pin dual in-line memory module (DIMM) Error Check Correction (ECC) Capability Registered inputs with one-clock delay Phase-lock loop (PLL) clock driver reduce loading 2.5V 0.2V VDDQ Power supply inputs outputs compatible with SSTL_2 interface Fully differential clock operations /CK) with 100/133MHz Programmable Latency supported Programmable Burst Length with both sequential interleave mode tRAS Lock-out function supported Internal four bank operations with single pulsed Auto refresh self refresh supported 8192 refresh cycles 64ms
ORDERING INFORMATION
Part
HYMD264G726D(L)4-M HYMD264G726D(L)4-K HYMD264G726D(L)4-H HYMD264G726D(L)4-L VDD=2.5V VDDQ=2.5V
Power Supply
Clock Frequency
133MHz (*DDR266:2-2-2) 133MHz (*DDR266A) 133MHz (*DDR266B) 100MHz (*DDR200)
Interface
Form Factor
SSTL_2
184pin Profile Registered DIMM 5.25 0.15 inch
JEDEC Defined Specifications compliant
This document general product description subject change without notice. Hynix Semiconductor does assume responsibility circuits described. patent licenses implied. Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CK0, /CK0 CKE0 /RAS, /CAS, BA0, DQ0~DQ63 CB0~CB7 DQS0~DQS17 DM0~7 /RESET Description Differential Clock Inputs Chip Select Input Clock Enable Input Commend Sets Inputs Address Bank Address Data Inputs/Outputs Data Strobe Inputs/Outputs Data Strobe Inputs/Outputs Data-in Mask Power Supply Reset Enable VDDQ VREF VDDSPD SA0~SA2 VDDID FETEN Description Power Supply Ground Reference Power Supply Power Supply E2PROM Address Inputs E2PROM Clock E2PROM Data Write Protect Flag Identification Flag Connection Enable
ASSIGNMENT
Name VREF DQS0 /RESET DQS1 VDDQ DQ10 DQ11 CKE0 VDDQ DQ16 DQ17 DQS2 DQ18 VDDQ DQ19 DQ32 VDDQ DQ33 DQS4 DQ34 DQ35 DQ40 Name DQ24 DQ25 DQS3 DQ26 DQ27 DQS8 Name VDDQ DQ41 /CAS DQS5 DQ42 DQ43 DQ48 DQ49 VDDQ DQS6 DQ50 DQ51 VDDID DQ56 DQ57 DQS7 DQ58 DQ59 Name VDDQ DQS9 A13* VDDQ DQ12 DQ13 DQS10 DQ14 DQ15 CKE1* VDDQ BA2* DQ20 DQ21 DQS11 DQ22 DQ23 DQ36 DQ37 DQS13 DQ38 DQ39 DQ44 Name DQ28 DQ29 VDDQ DQS12 DQ30 DQ31 VDDQ /CK0 DQS17 VDDQ Name /RAS DQ45 VDDQ /CS0 /CS1* DQ46 DQ47 VDDQ DQ52 DQ53 FETEN* DQ54 DQ55 VDDQ DQ60 DQ61 DQ62 DQ63 VDDQ VDDSPD
These used this module used other module 184pin DIMM family
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
FUNCTIONAL BLOCK DIAGRAM
/RS0 DQS0
I/O0 I/O1 I/O2 I/O3
DM0/DQS9
DM1/DQS10
I/O0 I/O1 I/O2 I/O3
DQS1
DQ10 DQ11 I/O0 I/O1 I/O2 I/O3
DQ12 DQ13 DQ14 DQ15
I/O0 I/O1 I/O2 I/O3
DQS2
DQ16 DQ17 DQ18 DQ19 I/O0 I/O1 I/O2 I/O3
DM2/DQS11
DM3/DQS12
DQ20 DQ21 DQ22 DQ23
I/O0 I/O1 I/O2 I/O3
DQS3
DQ24 DQ25 DQ26 DQ27 I/O0 I/O1 I/O2 I/O3
DM4/DQS13
DQ28 DQ29 DQ30 DQ31
I/O0 I/O1 I/O2 I/O3
DQS4
DQ32 DQ33 DQ34 DQ35 I/O0 I/O1 I/O2 I/O3
DM5/DQS14
DQ36 DQ37 DQ38 DQ39
I/O0 I/O1 I/O2 I/O3
DQS5
DQ40 DQ41 DQ42 DQ43 I/O0 I/O1 I/O2 I/O3
DM6/DQS15
DQ44 DQ45 DQ46 DQ47
I/O0 I/O1 I/O2 I/O3
DQS6
DQ48 DQ49 DQ50 DQ51 I/O0 I/O1 I/O2 I/O3
VDDSPD
DQ52 DQ53 DQ54 DQ55 I/O0 I/O1 I/O2 I/O3
Serial DO-D8 DO-D8 DO-D8
DO-D8
VDDQ
VREF
DQS7
DQ56 DQ57 DQ58 DQ59 I/O0 I/O1 I/O2 I/O3
DM7/DQS16
DQ60 DQ61 DQ62 DQ63
I/O0 I/O1 I/O2 I/O3
VDDID
Strap:see Note
DQS8
I/O0 I/O1 I/O2 I/O3
DM8/DQS17
Serial
I/O0 I/O1 I/O2 I/O3
BA0-BA1
A0-A12 /RAS /CAS
/PCK
/RS->/CS SDRAMs D0-D17 RBA0-RBA1-> BA0->BA1 SDRAMs D0-D17
RA0-RA12-> A0->A12 SDRAMs D0-D17 /RRAS->/RAS SDRAMs D0-D17 /RCAS->/CAS SDRAMs D0-D17 RCKEA->CKE SDRAMs D0-D17 E->W SDRAMs D0-D17
/RESET
Note DQ-to-I/O wiring changed within byte. DQ/DQS/DM/CKE/S relationships must maintained shown. DQ/DQS resistors should Ohms. DDID strap connections (for memory device STRAP (OPEN) STRAP Address control resistors should Ohms.
CKO, /CKO-PLL* Clock Loading Table iring Diagram
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
ABSOLUTE MAXIMUM RATINGS
Parameter Operating Temperature (Ambient) Storage Temperature Voltage relative Voltage relative Voltage VDDQ relative Output Short Circuit Current Power Dissipation Soldering Temperature Time TSTG VIN, VOUT VDDQ TSOLDER Symbol -0.5 -0.5 -0.5 Components Rating
Unit
Note Operation above absolute maximum rating adversely affect device reliability
OPERATING CONDITIONS (TA=0 Voltage referenced VSS=
Parameter Power Supply Voltage Power Supply Voltage Input High Voltage Input Voltage Termination Voltage Reference Voltage VDDQ VREF Symbol VREF 0.15 -0.3 VREF 0.04 0.49*VDDQ Typ. VREF 0.5*VDDQ VDDQ VREF 0.15 VREF 0.04 0.51*VDDQ Unit Note
Note VDDQ must exceed level VDD. (min) acceptable -1.5V pulse width with duration. value VREF approximately equal 0.5VDDQ.
OPERATING CONDITIONS (TA=0 Voltage referenced
Parameter Input High (Logic Voltage, signals Input (Logic Voltage, signals Input Differential Voltage, inputs Input Crossing Point Voltage, inputs Symbol VIH(AC) VIL(AC) VID(AC) VIX(AC) 0.5*VDDQ-0.2 VREF 0.31 VREF 0.31 VDDQ 0.5*VDDQ+0.2 Unit Note
Note magnitude difference between input level input /CK. value expected equal 0.5*V transmitting device must track variations level same.
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
OPERATING TEST CONDITIONS (TA=0 70oC, Voltage referenced
Parameter Reference Voltage Termination Voltage Input High Level Voltage (VIH, min) Input Level Voltage (VIL, max) Input Timing Measurement Reference Level Voltage Output Timing Measurement Reference Level Voltage Input Signal maximum peak swing Input minimum Signal Slew Rate Termination Resistor (RT) Series Resistor (RS) Output Load Capacitance Access Time Measurement (CL) Value VDDQ VDDQ VREF 0.31 VREF 0.31 VREF Unit V/ns
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CAPACITANCE (TA=25oC, f=100MHz
Parameter Input Capacitance Input Capacitance Input Capacitance Input Capacitance Input Capacitance Data Input Output Capacitance Data Input Output Capacitance A12, BA0, /RAS, /CAS, CKE0 CK0, /CK0 DQ63, DQS0 DQS17 Symbol CIN1 CIN2 CIN3 CIN4 CIN5 CIO1 CIO2 Unit
Note min. max., VDDQ 2.3V 2.7V, VODC VDDQ/2, VOpeak-to-peak 0.2V Pins under test tied GND. These values guaranteed design tested sample basis only.
OUTPUT LOAD CIRCUIT
RT=50
Output Zo=50 VREF
CL=30pF
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CHARACTERISTICS (TA=0 70oC, Voltage referenced
Parameter Input Leakage Current
Add, CMD, /CS, /CKE
Symbol
Min. 0.76
0.76
Unit
Note -15.2mA +15.2mA
Output Leakage Current Output High Voltage Output Voltage
Note 3.6V, other pins tested under DOUT disabled, VOUT=0 2.7V
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CHARACTERISTICS (TA=0 70oC, Voltage referenced
Sort
Parameter
Symbol
Test Condition
bank; Active Precharge; tRC=tRC(min); tCK=tCK(min); DQ,DM inputs changing twice clock cycle; address control inputs changing once clock cycle bank; Active Read Precharge; Burst Length=2; tRC=tRC(min); tCK=tCK(min); address control inputs changing once clock cycle banks idle; Power down mode; CKE=Low, tCK=tCK(min) /CS=High, banks idle; tCK=tCK(min); CKE= High; address control inputs changing once clock cycle. VREF bank active; Power down mode; CKE=Low, tCK=tCK(min) /CS=HIGH; CKE=HIGH; bank; ActivePrecharge; tRC=tRAS(max); tCK=tCK(max); inputs changing twice clock cycle; Address other control inputs changing once clock cycle Burst=2; Reads; Continuous burst; bank active; Address control inputs changing once clock cycle; tCK=tCK(min); IOUT=0mA Burst=2; Writes; Continuous burst; bank active; Address control inputs changing once clock cycle; tCK=tCK(min); inputs changing twice clock cycle tRC=tRFC(min) 8*tCK DDR200 100Mhz, 10*tCK DDR266A DDR266B 133Mhz; distributed refresh CKE=<0.2V; External clock tCK=tCK(min) Normal Power
Speed
Unit Note
Operating Current
IDD0
1910
1820
Operating Current
IDD1
2270
2090
Precharge Power Down Standby Current
IDD2P
Idle Standby Current
IDD2F
1370
1190
Active Power Down Standby Current
IDD3P
Active Standby Current
IDD3N
1370
1280
Operating Current
IDD4R
3170
2810
Operating Current
IDD4W
3170
2810
Auto Refresh Current
IDD5
2870
2690
Self Refresh Current Operating Current Four Bank Operation
IDD6
4610 4250
IDD7
Four bank interleaving with BL=4 Refer following page detailed test condition
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CHARACTERISTICS operating conditions unless otherwise noted)
Sort Parameter Cycle Time Auto Refresh Cycle Time Active Time Active Read with Auto Precharge Delay Address Column Address Delay Active Active Delay Column Address Column Address Delay Precharge Time Write Recovery Time Write Read Command Delay Auto Precharge Write Recovery Precharge Time System Clock Cycle Time tDQSCK tDQSQ tQHS 0.45 0.45 -0.75 -0.75 -tQHS (tCL,tCH) 0.55 0.55 0.75 0.75 0.75 0.45 0.45 -0.75 -0.75 tHPmin -tQHS (tCL,tCH) 0.55 0.55 0.75 0.75 0.75 0.45 0.45 -0.75 -0.75 tHPmin -tQHS (tCL,tCH) 0.55 0.55 0.75 0.75 0.75 0.45 0.45 -0.8 -0.8 tHPmin -tQHS (tCL,tCH) 0.55 0.55 0.75 Symbol tRFC tRAS tRAP tRCD tRRD tCCD tWTR tDAL tRCD tRPmin
(tWR/tCK) (tRP/tCK)
120K tRCD tRPmin
(tWR/tCK) (tRP/tCK)
120K tRCD tRPmin
(tWR/tCK) (tRP/tCK)
Unit Note
120K
tRCD tRPmin
(tWR/tCK) (tRP/tCK)
120K
Clock High Level Width Clock Level Width Data-Out edge Clock edge Skew DQS-Out edge Clock edge Skew DQS-Out edge Data-Out edge Skew Data-Out hold time from Clock Half Period Data Hold Skew Factor Valid Data Output Window Data-out high-impedance window from Data-out low-impedance window from
tQH-tDQSQ -0.75 -0.75 0.75 0.75
tQH-tDQSQ -0.75 -0.75 0.75 0.75
tQH-tDQSQ -0.75 -0.75 0.75 0.75
tQH-tDQSQ -0.8 -0.8
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
CHARACTERISTICS operating conditions unless otherwise noted)
Parameter Input Setup Time (fast slew rate) Input Hold Time (fast slew rate) Input Setup Time (slow slew rate) Input Hold Time (slow slew rate) Input Pulse Width Write High Level Width Write Level Width Clock First Rising edge DQS-In Data-In Setup Time DQS-In Data-in Hold Time DQS-In Input Pulse Width Read Preamble Time Read Postamble Time Write Preamble Setup Time Write Preamble Hold Time Write Postamble Time Mode Register Delay Exit Self Refresh Execute Command Average Periodic Refresh Interval Note This calculation accounts tDQSQ(max), pulse width distortion on-chip circuit jitter. Data sampled rising edges clock A0~A12, BA0~BA1, CKE, /CS, /RAS, /CAS, /WE. command/address input slew rate >=1.0V/ns command/address input slew rate >=0.5V/ns <1.0V/ns This derating table used increase tIS/tIH case where input slew-rate below 0.5V/ns. Input Setup Hold Slew-rate Derating Table. Input Setup Hold Slew-rate V/ns Delta +100 Delta Symbol tIPW tDQSH tDQSL tDQSS tDIPW tRPRE tRPST tWPRES tWPREH tWPST tMRD tXSC tREFI 0.35 0.35 0.72 1.75 0.25 1.28 0.35 0.35 0.75 1.75 0.25 1.25 0.35 0.35 0.75 1.75 0.25 1.25 0.35 0.35 0.75 0.25 1.25 6,7, 11~13 6,7, 11~13 2,3,5,6 2,3,5,6 2,4,5,6 2,4,5,6
Unit Note
continued
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Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
slew rates >=1.0V/ns These parameters quarantee device timing, they necessarily tested each device, they quaranteed design tester correlation. Data latched both rising falling edges Data Strobes(LDQS/UDQS) LDM/UDM. Minimum cycles stable input clocks after Self Refresh Exit command, where held high, required complete Self Refresh Exit lock internal circuit SDRAM. (tCL, tCH) refers smaller actual clock time actual clock high time provided device (i.e. this value greater than minimum specification limits tCH). minimum half clock period given cycle defined clock high clock (tCH, tCL). tQHS consists tDQSQmax, pulse width distortion on-chip clock circuits, data skew output pattern effects p-channel n-channel variation output drivers. This derating table used increase tDS/tDH case where input slew-rate below 0.5V/ns. Input Setup Hold Slew-rate Derating Table. Input Setup Hold Slew-rate V/ns Delta +150 Delta +150
Setup/Hold Plateau Derating. This derating table used increase tDS/tDH case where input level flat below VREF +/-310mV duration 2ns. Input Level +280 Delta Delta
Setup/Hold Delta Inverse Slew Rate Derating. This derating table used increase tDS/tDH case where slew rates differ. Delta Inverse Slew Rate calculated (1/SlewRate1)-(1/SlewRate2). example, slew rate 1=0.5V/ns Slew Rate2 0.4V/n then Delta Inverse Slew Rate -0.5ns/V. (1/SlewRate1)-(1/SlewRate2) ns/V +/-0.25 Delta +100 Delta +100
DQS, input slew rate specified prevent double clocking data preserve setup hold times. Signal transi tions through region must monotonic. tDAL (tDPL (tRP each terms above, already integer, round next highest integer. equal actual system clock cycle time. Example: DDR266B CL=2.5 tDAL (2.00) (2.67) Round each non-integer next highest integer: (3), tDAL clock parts which internal lockout circuit, Active Read with Auto precharge delay should tRAS BL/2 tCK. transitions occur same access time windows valid data trasitions. These parameters referenced specific voltage level specify when device output longer driving (HZ), begins driving (LZ).
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
SIMPLIFIED COMMAND TRUTH TABLE
Command Extended Mode Register Mode Register Device Deselect Operation Bank Active Read Read with Autoprecharge Write Write with Autoprecharge Precharge Banks Precharge selected Bank Read Burst Stop Auto Refresh Entry Self Refresh Exit CKEn-1 CKEn /RAS /CAS
ADDR
A10/ code code
Note
Entry Precharge Power Down Mode Exit
Active Power Down Mode
Entry Exit
H=Logic High Level, L=Logic Level, X=Don't Care, V=Valid Data Input, Code=Operand Code, NOP=No Operation Note states Don't Care. Refer below Write Mask Truth Table. Code(Operand Code) consists A0~A12 BA0~BA1 used Mode Registering duing Extended MRS. Before entering Mode Register mode, banks must precharge state command issued after period from Prechagre command. Read with Autoprecharge command detected memory component CK(n), then there will command presented activated bank until CK(n+BL/2+tRP). Write with Autoprecharge command detected memory component CK(n), then there will command presented activated bank until CK(n+BL/2+1+tDPL+tRP). Last Data-In Prechage delay(tDPL) which also called Write Recovery Time (tWR) needed guarantee that last data been completely written. A10/AP High when Precharge command being issued, BA0/BA1 ignored banks selected precharged.
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
PACKAGE DIMENSIONS
Front
133.35 5.25
Register
30.48
Back
3.99 .157max
Side
(Front)
Register
1.27+/-0.10 0.05+/-0.004
Rev. June 2004
SERIAL PRESENCE DETECT
SPECIFICATION
(64Mx72 Profile Registered DIMM)
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
SERIAL PRESENCE DETECT
Byte# Function Description Number Bytes written into serial memory module manufacturer Total number Bytes device Fundamental memory type Number address this assembly Number column address this assembly Number physical banks DIMM Module data width Module data width (continued) Module voltage Interface levels(VDDQ) SDRAM cycle time Latency=2.5(tCK) SDRAM access time from clock CL=2.5 (tAC) Module configuration type Refresh rate type Primary SDRAM width Error checking SDRAM data width Minimum clock delay back-to-back random column address(tCCD) Burst lengths supported Number banks each SDRAM latency supported latency latency SDRAM module attributes SDRAM device attributes General SDRAM cycle time CL=2.0(tCK) SDRAM access time from clock CL=2.0(tAC) SDRAM cycle time CL=1.5(tCK) SDRAM access time from clock CL=1.5(tAC) Minimum precharge time(tRP) Minimum activate active delay(tRRD) Minimum delay(tRCD) Minimum active precharge time(tRAS) Module density Command address signal input setup time(tIS) Command address signal input hold time(tIH) Data signal input setup time(tDS) Data signal input hold time(tDH) Minimum active auto-refresh time tRC) Minimum auto-refresh active/auto-refresh command period(tRFC) Maximum cycle time (tCK max) Maximim DQS-DQ skew time(tDQSQ) Maximum read data hold skew factor(tQHS) Revision code Checksum Bytes 0~62 0.9ns 0.9ns 0.5ns 0.5ns 60ns 75ns 12ns 0.5ns 0.75ns 15ns 15ns 15ns 45ns 20ns 15ns 20ns 45ns 0.9ns 0.9ns 0.5ns 0.5ns 65ns 75ns 12ns 0.5ns 0.75ns 7.5ns 7.5ns +/-0.75ns 7.8us Self refresh 2,4,8 Banks Registered, +/-0.2Voltage tolerance, Concurrent Auto Precharge tRAS Lock 7.5ns 7.5ns +/-0.75ns 20ns 15ns 20ns 45ns 0.9ns 0.9ns 0.5ns 0.5ns 65ns 75ns 12ns 0.5ns 0.75ns 20ns 15ns 20ns 50ns 1.1ns 1.1ns 0.6ns 0.6ns 70ns 80ns 12ns 0.6ns 0.75ns 10ns 10ns +/0.8ns
Sort
Function Supported Hexa Value 8.0ns +/0.8ns 7.5ns Note
Bytes Bytes SDRAM 1Bank Bits SSTL 2.5V
512MB
36~40 Reserved VCSDRAM
Undefined
46~61 Superset information(may used future)
Undefined Initial release
Rev. June 2004
HYMD264G726D(L)4M-M/K/H/L
SERIAL PRESENCE DETECT
Byte 65~71 Function Description Manufacturer JEDEC Code Manufacturer JEDEC Code Function Supported Hynix(Korea Area) HSA(United States Area) HSE(Europe Area) HSJ(Japan Area) Singapore Asia Area 6(8K refresh,4Bank) Blank Undefined Undefined Hexa Value
continued
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Note
Hynix JEDEC
Manufacturing location
89~90 95~98 99~127
Manufacture part number(Hynix Memory Module) Manufacture part number(Hynix Memory Module) Manufacture part number(Hynix Memory Module) Manufacture part number (DDR SDRAM) Manufacture part number(Memory density) Manufacture part number(Module Depth) Manufacture part number(Module Depth) Manufacture part number(Module type) Manufacture part number(Data width) -Manufacture part number(Data width) Manufacture part number(Refresh, Bank.) Manufacture part number(Component Generation) Manufacture part number(Component configuration) Manufacture part number(Low Profile) Manufacture part number(Hyphen) Manufacture part number(Minimum cycle time) Manufacture part number(T.B.D) Manufacture revision code(for Component) Manufacture revision code (for PCB) Manufacturing date(Year) Manufacturing date(Week) Module serial number Manufacturer specific data (may used future)
128~255 Open customer
Note
bank address excluded This value based component specification These bytes programmed code date week date year These bytes apply Hynix's Module Serial Number system These bytes undefined coded `00h' Refer Hynix Site
Byte 85~87, power part
Byte Function Description Manufacture part number(Low power part) Manufacture part number(Component configuration) Manufacture part number(Low Profile) Function Supported Hexa Value Note
Rev. June 2004

Hynix HYMD264G726D(L)4-M/K/H/L series Profile registered 184-pin doubl

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