Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    CM54 Search Results

    SF Impression Pixel

    CM54 Price and Stock

    Laird, A DuPont Business CM5441Z161B-10

    CMC 75A 2LN 160 OHM TH
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey CM5441Z161B-10 Tray 38,333 1
    • 1 $3.32
    • 10 $2.576
    • 100 $2.09182
    • 1000 $1.94773
    • 10000 $1.94773
    Buy Now
    Newark CM5441Z161B-10 Bulk 259 1
    • 1 $5.31
    • 10 $3.61
    • 100 $3.34
    • 1000 $3.15
    • 10000 $3.15
    Buy Now
    Quest Components CM5441Z161B-10 32
    • 1 $4.5
    • 10 $2.25
    • 100 $2.25
    • 1000 $2.25
    • 10000 $2.25
    Buy Now
    CM5441Z161B-10 6
    • 1 $3.78
    • 10 $2.52
    • 100 $2.52
    • 1000 $2.52
    • 10000 $2.52
    Buy Now
    Interstate Connecting Components CM5441Z161B-10 2,287
    • 1 -
    • 10 -
    • 100 $2.6644
    • 1000 $2.0816
    • 10000 $2.0816
    Buy Now
    NexGen Digital CM5441Z161B-10 53
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Component Electronics, Inc CM5441Z161B-10 8
    • 1 $1.54
    • 10 $1.54
    • 100 $1.15
    • 1000 $1
    • 10000 $1
    Buy Now
    Sager CM5441Z161B-10 12,212 500
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.4
    • 10000 $2.13
    Buy Now

    Laird, A DuPont Business CM5441Z101B-10

    CMC 75A 2LN 100 OHM TH
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey CM5441Z101B-10 Bulk 9,195 1
    • 1 $3.54
    • 10 $2.75
    • 100 $2.1329
    • 1000 $1.68508
    • 10000 $1.625
    Buy Now
    Newark CM5441Z101B-10 Bulk 400 1
    • 1 $4.08
    • 10 $3.05
    • 100 $2.82
    • 1000 $2.75
    • 10000 $2.75
    Buy Now
    CM5441Z101B-10 Bulk 72 1
    • 1 $4.06
    • 10 $3.03
    • 100 $2.8
    • 1000 $2.72
    • 10000 $2.72
    Buy Now
    Bristol Electronics CM5441Z101B-10 30
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Quest Components CM5441Z101B-10 24
    • 1 $2.48
    • 10 $1.86
    • 100 $1.55
    • 1000 $1.55
    • 10000 $1.55
    Buy Now
    Interstate Connecting Components CM5441Z101B-10 618
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.7642
    • 10000 $1.7366
    Buy Now
    Sager CM5441Z101B-10 1,983 500
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.18
    • 10000 $1.75
    Buy Now

    Broadcom Limited BCM5461A1KFBG

    IC TRANSCEIVER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey BCM5461A1KFBG Tray 7,785 1
    • 1 $14.85
    • 10 $10.585
    • 100 $8.43075
    • 1000 $7.16625
    • 10000 $7.16625
    Buy Now
    Newark BCM5461A1KFBG Bulk 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Vyrian BCM5461A1KFBG 5
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    Broadcom Limited BCM5461SA3KFBG

    IC TRANSCEIVER FULL HALF 1/1
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey BCM5461SA3KFBG Tray 4,005 1
    • 1 $17.42
    • 10 $13.59
    • 100 $11.29913
    • 1000 $9.56089
    • 10000 $9.56089
    Buy Now
    Newark BCM5461SA3KFBG Bulk 1
    • 1 $11.72
    • 10 $11.72
    • 100 $11.72
    • 1000 $11.72
    • 10000 $11.72
    Buy Now
    Ameya Holding Limited BCM5461SA3KFBG 30
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    EBV Elektronik BCM5461SA3KFBG 52 Weeks 1,820
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Win Source Electronics BCM5461SA3KFBG 4,373
    • 1 -
    • 10 $12.4264
    • 100 $10.0964
    • 1000 $10.0964
    • 10000 $10.0964
    Buy Now

    Broadcom Limited BCM54616SC0KFBG

    IC TRANSCEIVER 100BGA
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey BCM54616SC0KFBG Tray 3,881 1
    • 1 $20.53
    • 10 $16.075
    • 100 $13.415
    • 1000 $11.91957
    • 10000 $11.91957
    Buy Now
    Newark BCM54616SC0KFBG Bulk 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Bristol Electronics BCM54616SC0KFBG 919
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    BCM54616SC0KFBG 25 1
    • 1 $10.5
    • 10 $7.875
    • 100 $7.0875
    • 1000 $7.0875
    • 10000 $7.0875
    Buy Now
    BCM54616SC0KFBG 3
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Ameya Holding Limited BCM54616SC0KFBG 410,176
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    ComSIT USA BCM54616SC0KFBG 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Velocity Electronics BCM54616SC0KFBG 70
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    EBV Elektronik BCM54616SC0KFBG 52 Weeks 1,820
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Win Source Electronics BCM54616SC0KFBG 6,900
    • 1 -
    • 10 $11.2868
    • 100 $7.5246
    • 1000 $7.5246
    • 10000 $7.5246
    Buy Now

    CM54 Datasheets (12)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    CM5436-000 TE Connectivity Cables, Wires - Management - Heat Shrink Boots, Caps - FLEX POLY MOLDED PART Original PDF
    CM5441Z101B-00 Laird-Signal Integrity Products Filters - Common Mode Chokes - CMC 75A 2LN 100 OHM TH Original PDF
    CM5441Z101B-00 Steward Common Mode Chokes, Filters, CHOKE COM MODE ULTRA HC 100 OHMS Original PDF
    CM5441Z101B-00 Stewart Connector Systems Inductor: Choke: 100: 100M: 75: Radial: Bulk Original PDF
    CM5441Z101B-10 Laird Technologies Common Mode Chokes, Filters, CHOKE COM MODE ULTRA HC 100 OHMS Original PDF
    CM5441Z161B-00 Laird-Signal Integrity Products Filters - Common Mode Chokes - CMC 75A 2LN 160 OHM TH Original PDF
    CM5441Z161B-00 Steward Common Mode Chokes, Filters, CHOKE COM MODE ULTRA HC 160 OHMS Original PDF
    CM5441Z161B-00 Stewart Connector Systems Inductor: Choke: 160: 100M: 75: Radial: Bulk Original PDF
    CM5441Z161B-10 Laird Technologies Common Mode Chokes, Filters, CHOKE COM MODE ULTRA HC 160 OHMS Original PDF
    CM5441Z990B-00 Laird-Signal Integrity Products Filters - Common Mode Chokes - CMC 55A 2LN 99 OHM TH Original PDF
    CM5441Z990B-00 Steward Common Mode Chokes, Filters, CHOKE COM MODE LOW FREQ 99 OHM Original PDF
    CM5468-000 TE Connectivity Cables, Wires - Management - Heat Shrink Tubing - HEAT SHRINK PO 2.5:1 BLU Original PDF

    CM54 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    CM5441Z101B-00

    Abstract: No abstract text available
    Text: Page 1 of 2 CM5441Z101B-00 Drawing Figure # Figure Number 7 Electrical Characteristics NET Z @ 100 MHz DCR Max Rated Current mA 100 0.0003 75000 Physical Dimensions A mm B mm B1 mm C mm C1 mm D mm E mm E1 mm A in B in B1 in C in C1 in D in E in E1 in 13.72


    Original
    PDF CM5441Z101B-00 CM5441Z101B-00

    CM5441Z161B-00

    Abstract: No abstract text available
    Text: Page 1 of 2 CM5441Z161B-00 Drawing Figure # Figure Number 7 Electrical Characteristics NET Z @ 100 MHz DCR Max Rated Current mA 160 0.0003 75000 Physical Dimensions A mm B mm B1 mm C mm C1 mm D mm E mm E1 mm A in B in B1 in C in C1 in D in E in E1 in 13.72


    Original
    PDF CM5441Z161B-00 CM5441Z161B-00

    rm7035c

    Abstract: MIPS RM7965 CM5470
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet PM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 1: 59 System Clock Generator For MIPS-Based Designs 00 5 10 :1 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C, rm7035c MIPS RM7965

    RM7035C

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet AM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 2: 24 System Clock Generator For MIPS-Based Designs 04 09 :1 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C, RM7035C

    rm7065c

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet AM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 0: 50 System Clock Generator For MIPS-Based Designs 5 02 :2 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C, rm7065c

    Rm7035c

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet PM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 8: 03 System Clock Generator For MIPS-Based Designs 04 03 :4 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C, Rm7035c

    Untitled

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet AM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 1: 57 System Clock Generator For MIPS-Based Designs 04 03 :4 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C,

    Rm7035c

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet AM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 7: 56 System Clock Generator For MIPS-Based Designs 04 11 :1 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C, Rm7035c

    Untitled

    Abstract: No abstract text available
    Text: CM5470 Preliminary GEN-M7K-56-000 Data Sheet AM A MEMBER OF PMC-SIERRA’S CLOCK FAMILY 9: 42 System Clock Generator For MIPS-Based Designs 5 09 :5 PMC-Sierra’s GEN-M7K-56-000 is perfectly tailored to perform the clock generation required in a design using MIPS-basedTM processors. The GEN-M7K-56-000 covers the clocking needs of the 5K and


    Original
    PDF CM5470 GEN-M7K-56-000 RM5231A, RM5261A, RM7000A, RM7000B, RM7000C, RM7035C,

    CM13A

    Abstract: CM75A CM05A CM20A CM28A cm14a CM07A CM78A MARKING CODE CMF12A CMF13A
    Text: Central CMF5.0A THRU CMF170A TM Semiconductor Corp. UNI-DIRECTIONAL SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR 200 WATTS, 5.0 THRU 170 VOLTS by Specified STAND-OFF VOLTAGE DESCRIPTION: The CENTRAL SEMICONDUCTOR CMF5.0 Series of Transient Voltage Suppressors are designed to protect sensitive electronic


    Original
    PDF CMF170A OD-123F CM51A CM54A CM58A CM60A CM64A CM70A CM75A CM78A CM13A CM75A CM05A CM20A CM28A cm14a CM07A CM78A MARKING CODE CMF12A CMF13A

    cm78a

    Abstract: cm14a CM17A CM08A CM05A CM28A CM33A cm64a CM11A cm085
    Text: Central CMF5.0A THRU CMF170A Semiconductor Corp. UNI-DIRECTIONAL SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR 200 WATTS, 5.0 THRU 170 VOLTS Specified TM by STAND-OFF VOLTAGE DESCRIPTION: The CENTRAL SEMICONDUCTOR CMF5.0 Series of Transient Voltage Suppressors are designed to protect sensitive electronic


    Original
    PDF CMF170A OD-123F CMF110A CMF120A CMF130A CMF150A CMF160A CM51A CM54A cm78a cm14a CM17A CM08A CM05A CM28A CM33A cm64a CM11A cm085

    M705-GRN360-K2V

    Abstract: M705-GRN360-K2-V M705-GRN360-K2 M705-GRN-360-K2-V M705-GRN360 OZ63 OZ63-221 M705 FF14A-4A
    Text: 0.5mm ピッチ FPC 用コネクタ FF14A Series 【ケーブルロックタイプ】 概 要 FF14A シリーズは 0.5mm ピッチの FPC 用コネクタ でケーブルロック機構を備えています。 コネクタ高さは 0.9mm と低背で、実装時の基板占有面


    Original
    PDF FF14A FF14A UL94V-0 400mm M705-GRN360-K2V M705-GRN360-K2-V M705-GRN360-K2 M705-GRN-360-K2-V M705-GRN360 OZ63 OZ63-221 M705 FF14A-4A

    DS30505

    Abstract: No abstract text available
    Text: PIC24FJ128GC010 FAMILY 16-Bit Flash Microcontrollers with 12-Bit Pipeline A/D, Sigma-Delta A/D, USB On-The-Go and XLP Technology Advanced Analog Features Extreme Low-Power Features • 12-Bit, up to 50-Channel, High-Speed, Pipelined Analog-to-Digital A/D Converter:


    Original
    PDF PIC24FJ128GC010 16-Bit 12-Bit 12-Bit, 50-Channel, 10-Bit DS30009312B-page DS30505

    Untitled

    Abstract: No abstract text available
    Text: High Current Common Mode Chokes - Series 41 • Up To 75 Amps Continuous Operation Capability • Compact Design • Thru-Hole Installation • Robust Construction • Very Low DCR The Series 41 Common Mode Arrays filter common mode EMI in applications of up to 75 amps continuous operating


    Original
    PDF CM5441Z161B-10 CM5441Z161B-13

    CM5441Z101B-10

    Abstract: No abstract text available
    Text: PHYSICAI DIMFNSIONS: 13.72 [.5 4 0 ] 0.2 0 [.0 0 8 ] 10.41 [.4 1 0 ] 0.15 [.0 0 6 ] 10.52 [.4 1 4 ] 0 .2 5 [.0 1 0 ] 5 .2 8 [.2 0 8 ] 0.13 [.0 0 5 ] 6 .3 5 [.2 5 0 ] 0.10 [.0 0 4 ] CM5441Z101B-10 UNCONTROLLED DOCUMENT ELECTRICAL CHARACTERISTICS: Z @ 100MHz


    OCR Scan
    PDF E4991A 6194A CM5441Z101B-10 100MHz 12/1B/Q7 5441Z101Bâ CM5441Z101Bâ H0540-0 CM5441Z101B-10

    "256k x 4" dram refresh

    Abstract: No abstract text available
    Text: MOTOROLA M SEM ICO NDUCTO R TECHNICAL DATA Product Preview 256K x 18 CMOS Dynamic RAM Fast Page Mode - 2 CAS, 1 Write Enable The M CM54280B is a 0.6|i CMOS high-speed, dynamic random access memory. It is organized as 262,144 eighteen-bit words and fabricated with CMOS silicon-gate


    OCR Scan
    PDF CM54280B MCM54280B 400-mil 100-mil 40-Pin 400-mll 475-mil 40/44-Pin "256k x 4" dram refresh

    Untitled

    Abstract: No abstract text available
    Text: PHYSICAI DIMFNSIONS: + + 13.72 [.5 4 0 ] 10.41 [.4 1 0 ] 0.2 0 [.0 0 8 ] 0.15 [.0 0 6 ] 10.52 [.4 1 4 ] + 0 .2 5 [.0 1 0 ] 5 .2 8 [.2 0 8 ] + 0.13 [.0 0 5 ] 6 .3 5 [.2 5 0 ] + 0.10 [.0 0 4 ] CM5441Z101B-13 ELECTRICAL CHARACTERISTICS: Z @ 100MHz n WIRE DIMENSIONS:


    OCR Scan
    PDF CM5441Z101B-13 100MHz 6194A CM5441Z101B--13 5441Z101B E4991A

    Untitled

    Abstract: No abstract text available
    Text: MOTOROLA SEM ICO NDUCTO R TECHNICAL DATA Product Preview 256K x 16 CMOS Dynamic RAM Fast Page Mode - 1 CAS, 2 Write Enables The M CM54170B is a 0.6n CMOS high-speed, dynam ic random access memory. It is organized as 262,144 sixteen-bit words and fabricated with CMOS siiicon-gate pro­


    OCR Scan
    PDF CM54170B MCM54170B 400-mil 100-mil 40-Pln 400-mll 475-mll 40/44-Pln

    Untitled

    Abstract: No abstract text available
    Text: MOTOROLA SEM ICO ND U C TO R TECHNICAL DATA CM54102A Advance Information 4M x 1 CMOS Dynamic RAM Static Column N PACKAGE 300-MIL SOJ CASE 822 The M CM54102A is a 0.7|i CMOS high-speed, dynamic random access memory. It is organized as 4,194,304 one-bit words and fabricated with


    OCR Scan
    PDF CM54102A 4102A 300-mil 100-mil MCM54102A 4102A MCM54102AN60

    82062

    Abstract: seagate hard disk drive diagram seagate hard drive CIRCUIT diagram ST412 cm5206 mfm decoder SA604 mfm encoder CM5412 intel 82062
    Text: in t e i 82062 82062 WINCHESTER DISK CONTROLLER • Multiple Sector Transfer Capability ■ Controls ST506/ST412 Interface Winchester Drives Implied Seek With Read/Write Commands ■ 5 MBit/Sec Transfer Rate 128, 256, 512, and 1024 Byte Sector Lengths 7 Byte Sector Length Extension For


    OCR Scan
    PDF ST506/ST412 ST506 ST412, SA604 SA606, 82062 seagate hard disk drive diagram seagate hard drive CIRCUIT diagram ST412 cm5206 mfm decoder mfm encoder CM5412 intel 82062

    Untitled

    Abstract: No abstract text available
    Text: M O TO R O LA SEMICONDUCTOR TECHNICAL DATA CM54280B MCM5L4280B MCM5V4280B Product Preview 256K x 18 CMOS Dynamic RAM Fast Page Mode - 2 CAS, 1 Write Enable T h e M C M 5 4 2 8 0 B is a 0.6^x C M O S h ig h -s p e e d d y n a m ic ra n d o m a c c e s s m e m o ry .


    OCR Scan
    PDF MCM54280B MCM5L4280B MCM5V4280B 54280BJ70 54280BJ80 54280BJ10 54280BT70 54280BT80 54280BT10 54280BJ70R

    TP 3212 TRW

    Abstract: MCM54400A 3206m L1AA 54400AN70 54400AN
    Text: MO TO RO LA SEMICONDUCTOR TECHNICAL DATA 1M x 4 CMOS Dynamic RAM CM54400A MCM5L4400A Fast Page Mode The CM54400A is a 0.7|j CMOS high-speed dynamic random access memory. It is organized as 1,048,576 four-bit words and fabricated with CMOS siiicon-gate process


    OCR Scan
    PDF MCM54400A 4400A 5L4400A 54400AN60 54400AN70 54400AN80 5L4400AN 5L4400AN80 TP 3212 TRW 3206m L1AA 54400AN

    MCM54100A-80

    Abstract: cm54100
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA CM54100A-C Advance Information 4M x 1 CMOS Dynamic RAM Page Mode T h e M C M 5 4 1 0 0 A -C is a 0 .7 |i C M O S h ig h -s p e e d d y n a m ic ra n d o m a c c e s s m em o ry. It is o rg a n iz e d a s 4 ,1 9 4 ,3 0 4 o n e -b it w o rd s a n d fa b ric a te d w ith C M O S s iiic o n -g a te p ro ­


    OCR Scan
    PDF MCM54100A-C MCM54100ANC70 MCM54100ANC80 54100ANC70R2 54100ANC80R2 MCM54100AZC70 MCM54100AZC80 MCM541OOA-C MOTOD010 MCM54100A-C MCM54100A-80 cm54100

    TAA 310A

    Abstract: W25Q MCM54101AZ80 DRAM nibble mode
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA CM54101A Advance Information 4M x 1 CMOS Dynamic RAM Nibble Mode The CM54101A is a 0.7n CMOS high-speed dynamic random access memory. It is organized as 4,194,304 one-bit words and fabricated with CMOS silicon-gate process


    OCR Scan
    PDF MCM54101A MCM54101A CM54101AN60 CM54101AN70 MCM54101AN80 MCM54101AN60R2 MCM54101AN70R2 CM54101AN80R2 CM54101AZ60 TAA 310A W25Q MCM54101AZ80 DRAM nibble mode