3500/22M

NAND闪存的优点在于写 ( 编程 ) 和擦除操作的速率快，而 NOR 的优点是具有随机存取和对字节执行写 ( 编程 ) 操作的能力 ( 见图 2) 。 NOR 的随机存取能力支持直接代码执行 (XiP) ，而这是嵌入式应用经常需要的一个功能。 NAND 的缺点是随机存取的速率慢， NOR 的缺点是受到读和擦除速度慢的性能制约。 NAND 较适合于存储文件。如今，越来越多的处理器具备直接 NAND 接口，并能直接从 NAND( 没有 NOR) 导入数据。

NAND闪存的真正好处是编程速度快、擦除时间短。NAND闪存支持速率超过 5Mbps 的持续写操作，其区块擦除时间短至 2ms ，而 NOR 是 750ms 。显然， NAND闪存在某些方面具有优势。然而，它不太适合于直接随机存取。

对于 16 位的器件， NOR 闪存大约需要 41 个 I/O 引脚；相对而言， NAND器件仅需 24 个引脚。 NAND器件能够复用指令、地址和数据总线，从而节省了引脚数量。复用接口的一项好处，就在于能够利用同样的硬件设计和电路板，支持较大的 NAND器件。由于普通的 TSOP-1 封装已经沿用多年，该功能让客户能够把较高密度的 NAND器件移植到相同的电路板上。 NAND 器件的另外一个好处显然是其封装选项： NAND 提供一种厚膜的 2Gb 裸片或能够支持多四颗堆叠裸片，容许在相同的 TSOP-1 封装中堆叠一个 8Gb 的器件。这就使得一种封装和接口能够在将来支持较高的密度。

ALLEN BRADLEY 100A 600VAC-250VDC 3 POLE DISCONNECT SWITCH 1494F

ALLEN BRADLEY FULL VOLTAGE PUSH BUTTON 800E-2DLT3WX11 SERIES A

ALLEN BRADLEY 700-P000A1 SERIES B 110-120V CONTROL RELAY  

ALLEN BRADLEY 110/115-120VAC 60HZ COIL SIZE 1 27A CONTACTOR 500-BOD930 SER B

ALLEN BRADLEY SLC 500 7-SLOT RACK SER. B 1746-A7 / POWER SUPPLY SER. A 1746-P1

ALLEN BRADLEY 48-132 VAC 50-60Hz PROXIMITY SENSOR 871C-E4B12 SER. B

ALLEN BRADLEY BNC PLUG RG-6QS 1786-BNC/B

ALLEN BRADLEY 700-HF32A1-4 SERIES B 120 VAC 50/60 HERTZ RELAY

ALLEN BRADLEY 120-600V PRE-WIRED LIMIT SWITCH 802M-XY12 SER. D

ALLEN BRADLEY TOWER LIGHT STACK ASSEMBLY 855D-P00SC20G10?L4L5 SER-A

ALLEN BRADLEY 14-45A OVERLOAD RELAY 193-A1J2 SER. A

ALLEN BRADLEY  CONTACTOR  RPBP

ALLEN BRADLEY 592 SMP 0.32-1.0A OVERLOAD RELAY 592-A2CA SER. A

ALLEN BRADLEY  PUSH BUTTON ENCLOSURE SER M  800T 2PY

ALLEN BRADLEY 120V AC POWER SUPPLY 1771-P4R SER. B

ALLEN BRADLEY OVERLOAD THERMAL UNIT HEATING ELEMENTS W48  LOT OF 3

ALLEN BRADLEY PANELVIEW 1000 2711-T10C15X SER C FRN 4.46

ALLEN BRADLEY Ser.B NEMA SIZE 1 STARTER 509-BOD-XXX

ALLEN BRADLEY DISCONNECT SWITCH 194R-NC030P3 REV B

ALLEN BRADLEY 1A01 95/110 VOLTS 50/60 HERTZ COIL

ALLEN BRADLEY 3A 415VAC 2-POLE CIRCUIT BREAKER SER.C 1492-SP2C030

GE REVERSING STARTER CR309BO NEMA SIZE 0 600 AC VOLTS MAX. 18 AMPS

ALLEN BRADLEY 0.32-1.0A 3-POLE OVERLOAD RELAY 193-EA2CB SER. B

ALLEN BRADLEY SOLID STATE PRESSURE SENSOR 836E-DC1EQ1-D4 SER. A

ALLEN BRADLEY 70-264V DC/DC PHOTOSWITCH 42GTU-9202-QD SER. A

ALLEN BRADLEY 20A 3HP SINGLE POLE CIRCUIT BREAKER 1492-CB1 F200

ALLEN BRADLEY CONTROL LOGIX 1756-IB16/A REV. B01 SER. A F/W REV. 2.4

ALLEN BRADLEY  SER B FULL VOLTAGE MODULE   800E-3DL3X11

ALLEN BRADLEY 110/120V COIL AC RELAY 700-N600A1 SER. C LOT OF 5

ALLEN BRADLEY 10-30VDC 4 PIN PROXIMITY SENSOR 872C-DH2NP17-D4 A

ALLEN BRADLEY 110/120VAC 120VDC SOLID STATE TIMER 700-RTC00200U1 SER. A

ALLEN BRADLEY CIRCUIT BOARD 960091 REV-1

ALLEN BRADLEY PROGRAMMING TERMINAL 1201-HA2 SER. B FRN 1.03

ALLEN BRADLEY CLASS I DIV. 2 CONTROLNET LR60960C 1202

ALLEN BRADLEY  COIL  32A01

ALLEN BRADLEY 24VDC COIL DC RELAY 700S-DCP220Z24

ALLEN BRADLEY POWER FLEX 70 A SERIES 20 E 2P7A 3 AYYNNC0

ALLEN BRADLEY 150VAC MAX SURGE SUPPRESSOR 700-N5 SER. D

ALLEN BRADLEY 10HP VARIABLE FREQUENCY AC DRIVE 1336S-BRF100-AN?-EN-L5

ALLEN BRADLEY CIRCUIT BREAKER 6A 1P 1492-SP1B060

ALLEN BRADLEY SINGLE PHASE MANUAL STARTER SWITCH 600-TEX5 SER. D LISTING #1

ALLEN BRADLEY PLC-2 PROCESSOR INTERFACE MODULE 1772-LH

ALLEN BRADLEY 5A SINGLE POLE CIRCUIT BREAKERS 1492-CB1G050 SER. B

ALLEN BRADLEY 802M-AZJ9LF LIMIT SWITCH ENCLOSURE W/ HEAD NO BOX

ALLEN BRADLEY RELAY 10A 120V 50/60HZ  700-HA32A1-4 SER.C

ALLEN BRADLEY REMOTE I/O SCANNER DISTRIBUTION PANEL 1772-SD2 SER. A F/W REV. D

ALLEN BRADLEY 115-120V SIZE 0 CONTACTOR 500-AO930 SER. B

ALLEN BRADLEY ORANGE STEADY INCANDESCENT 855T-B24DN5 SERIES B

ALLEN BRADLEY 250VAC 0.5A SINGLE-POLE CIRCUIT BREAKER 1492-GH005

ALLEN BRADLEY 7A CIRCUIT BREAKER 2P LOT OF 2 1492-CB2 G070 SER B

ALLEN BRADLEY AMBER LENS PUSH TO TEST SMALL ROUND PILOT LIGHT 800MR-QT24AK

ALLEN BRADLEY 120V 50/60Hz COIL 40171-002-01

ALLEN BRADLEY 100HP 3-PHASE AC SERVO DRIVE 1336-B100-EAH-F?A2-L3-S1 SER. A

ALLEN BRADLEY 3 POLE CONTACTOR 600 V AC 30A SER B 100-C1610

ALLEN BRADLEY POINT I/O 24VDC INPUT MODULE 1734-IB4 SER. A

ALLEN BRADLEY 3HP AC DRIVE 1333-BAB SER. C

ALLEN BRADLEY PanelView 900 OPERATOR INTERFACE 2711-T9C1X SER. C FRN 4.20

ALLEN BRADLEY 3 POLE FUSIBLE DISCONNECT SWITCH 40021-573-04

ALLEN BRADLEY 889N-F8AF-2 CORDSET SERIES A

LLEN BRADLEY 5A 250VAC RELAY SOCKET BASE 700-HN122 SER. A LOT OF 2

ALLEN BRADLEY SELECTOR SWITCH 800H-HP2KB6# SER C

ALLEN BRADLEY POWER FLEX 70 A SERIES 20BE2P7A3AYNANA?0

ALLEN BRADLEY CLOSING BUTTON GREY ACCESSORY 800T-N1 SER.T SEALED

ALLEN BRADLEY 800MS-X0 SMALL PUSH BUTTON UNIT SERIES A

ALLEN BRADLEY 110/120 V 10 A RELAY 700-F220A1 SER. B LOT OF 5

ALLEN BRADLEY 12-55VAC 12-77VDC SURGE SUPPRESSOR VARISTOR 100FSV55 SER. A

ALLEN BRADLEY 71A01 STARTER NO PART NUMBER

ALLEN BRADLEY 110/120VAC COIL 24A CONTACTOR 100-A24NH3 SER. C

ALLEN BRADLEY 60A 600V 2 POLE FUSEHOLDER 1492-FB2J60-L

ALLEN BRADLEY 3A 2-POLE CIRCUIT BREAKER 1492-CB2 SER. B G030  LOT OF 5

ALLEN BRADLEY 2-POLE 30A CIRCUIT BREAKER 1492-CB2 G300 SER. B

ALLEN BRADLEY 24A CONTACTOR 100-A24D3 SER C

ALLEN BRADLEY 3NO + 1NC 10A AUXILIARY CONTACT 100-FA22 SER. A

ALLEN BRADLEY 250VAC 1.2A SINGLE POLE CIRCUIT BREAKER 1492-GH012 SER B

ALLEN BRADLEY REMOTE I/O SCANNER DISTRIBUTION PANEL 1772-SD2 SER.B REV. A

ALLEN BRADLEY 110/115-120VAC COIL 27A 600VAC SIZE 1 AC CONTACTOR 509-BOD-A2B

ALLEN BRADLEY 25/20/50HP SIZE 3 COMBINATION CONTROLLER 512-DJB-6-26 SER. B

ALLEN BRADLEY PANELVIEW 1000 2711-T10C15X SER D REV D FRN 4.46

ALLEN BRADLEY 30A 600V FUSE BLOCK ADAPTER PLATE KIT 1494F-C633 SER. B

ALLEN BRADLEY 3 POLE FUSIBLE DISCONNECT SWITCH 400021-558-02

ALLEN BRADLEY MEMORY MODULE SER. 4 W/ MEMORY SEGMENT 2048 WORD RAM 1772-ME

ALLEN BRADLEY 24V RED ILLUMINATED PUSH BUTTON 800T-AQ24R

ALLEN BRADLEY 1610-T0006S24 SER C DRY REED RELAY

ALLEN BRADLEY 600VAC 100A 3-POLE TRAILER FUSE BLOCK 1494V-FSR611 SER. A

ALLEN BRADLEY 12...250VDC SURGE SUPPRESSOR DIODE 100-FSD250 SER. A  LOT OF 2

ALLEN BRADLEY 4A G 040 SER B CIRCUIT BREAKER 1 LOT OF 12 1492-CB1

ALLEN BRADLEY INVERTER SNUBBER CIRCUIT BOARD 1336-SN-SP7A / 74103-216-52 REV-B

ALLEN BRADLEY 837-A6 SERIES A TEMPERATURE CONTROL

ALLEN BRADLEY 871A-TS3-R1 3-PIN MICRO STRAIGHT FEMALE TERMINAL CHAMBER

ALLEN BRADLEY 1.0-2.9A OVERLOAD RELAY 193-A2D1 SER. A LOT OF 2

ALLEN BRADLEY 380/440V 50/60CY COIL 71A11

ALLEN BRADLEY 1771-CK CHASSIS POWER CABLE LOT OF 8

ALLEN BRADLEY 1788CNC SERIES A COAX DAUGHTER CARD

ALLEN BRADLEY REED CONTACT BLOCK  800M-XD2R SERIES A

ALLEN BRADLEY 120V 60A 720VA LIMIT SWITCH ENCLOSURE 802M-HYA8L1F SERIES A

ALLEN BRADLEY 110/120VAC COIL DIRECT DRIVE AC RELAY 700-P200A1 SER. D

ALLEN BRADLEY 110/120VAC COIL DIRECT DRIVE AC RELAY 700-P200A1 SER. D

ALLEN BRADLEY 30A 250V SINGLE POLE FUSEHOLDER 1491-N121 LOT OF 3

ALLEN BRADLEY 7.5/10HP SIZE 1 COMBO STARTER 512-BAB-3-6XYGP?-24R-90

ALLEN BRADLEY  TRANSFORMER 50/60 HERTZ 110/120 VOLTS  X-183222

ALLEN BRADLEY  3 POSITION SELECTOR SWITCH LOCK NO KEY  800T-144B

ALLEN BRADLEY KEY INTERLOCK SWITCH 802F-TE6M11 SER. A REV. A

ALLEN BRADLEY SMP-1 1.6-5.0A OVERLOAD RELAY SER.A 193-A1E1 / 193-BPM2

ALLEN BRADLEY 5HP VARIABLE FREQUENCY AC DRIVE 1336S-BRF50-AN-?EN5-L5E

ALLEN BRADLEY 1771-HT3 TERMINATION PANEL

ALLEN BRADLEY 24VDC COIL 16A CONTACTOR 100-C16ZJ10 SER. B

ALLEN BRADLEY 70-264VAC/VDC PHOTOSWITCH 42GRP-9003-QD4 SER. B

ALLEN BRADLEY 845D-SJDN25ANFW?4 OPTICAL ABSOLUTE ENCODER

ALLEN BRADLEY 24 V COIL 10 A DC RELAY 700DC-F220J SER. B LOT OF 5

ALLEN BRADLEY  TERMINAL LUG KIT SER.A   199-LE1

ALLEN BRADLEY 4-PORT ETHERNET DIAGNOSTIC MODULE 9300-4EDM

ALLEN BRADLEY 1.5kW/2HP 4.0A SPEED CONTROLLER 160-BA04NSF1P1 SER B FRN 6.00

ALLEN BRADLEY 48-132VAC 50-60Hz PROXIMITY SENSOR 871C-E4B12 SER. B

ALLEN BRADLEY LOCKOUT MACHINE 512-CDCD25 SERIES B SIZE 2 STARTER

ALLEN BRADLEY SLC 500 OUTPUT MODULE 1746-OB32 SER. D

ALLEN BRADLEY 110/120V COIL CONTACTOR 700-F400A1 SER. B W/ 199-FIMZ24

ALLEN BRADLEY PLC 5/46 CONTROLNET PROCESSOR MODULE 1785-L46C15 SER. F F/W C

ALLEN BRADLEY FUSE BOARD 173091 REV-02

ALLEN BRADLEY DRIVEGUARD SAFE OFF OPTION FOR POWERFLEX 70 USER MANUAL 324684-P01

ALLEN BRADLEY BOARD OSAI A-B OS 5630

ALLEN BRADLEY PROCESSOR MODULE 1774-LB2

ALLEN BRADLEY TERMINAL BLOCK END ANCHOR LOT OF 7 1492-EA35

ALLEN BRADLEY  AC RELAY  700-PK400A1 SER D

ALLEN BRADLEY MOMENTARY CONTACT PUSHBUTTON SWITCH 800H-AP2# SER B

ALLEN BRADLEY RAM MEMORY MODULE 1772-MEB W/ x2 MEMORY SEGMENT MODULES 1772-MS8

ALLEN BRADLEY SINGLE PHASE MANUAL STARTER SWITCH 600-TEX5 SER. D LISTING #2

ALLEN BRADLEY GREEN OUSH BUTTON W/ CONTACT BLOCK 800E-2D0

ALLEN BRADLEY 30A 3-POLE CIRCUIT BREAKER SER.C  1492-CB3G300

ALLEN BRADLEY H 020 2A SER B CIRCUIT BREAKER 1492-CB1

ALLEN BRADLEY 110/115-120V COIL TYPE P AC RELAY SER.B 700-P1200A1

ALLEN BRADLEY FUSEABLE DISCONNECT SWITCH 194R-NC30P3 SER B

ALLEN BRADLEY 800T-H4D1 SER. T SELECTOR SWITCH

ALLEN BRADLEY 4A CIRCUIT BREAKER SER.B 1492-CB1H040

AB 3 POSITION SPRING RETURN FROM RIGHT CYLINDER LOCK 800T-J73KE7B

ALLEN BRADLEY SER. C 110/120V 50/60HZ AC RELAY 700-M200A1

ALLEN BRADLEY 130V GREEN LENS PILOT LIGHT 800T-QH13G SER. U

ALLEN BRADLEY 2-POSITION SELECTOR SWITCH SER.T  800T-H2H 105461

ALLEN BRADLEY 1329 C-B100BC18ST INVERTER DUTY INDUCTION MOTOR 100 HP FRAME 405T

ALLEN BRADLEY  8 SLOT I/O CHASSIS L01  1771-A2B B

ALLEN BRADLEY 600VAC 40A 30FLA 3-POLE CONTACTOR 400-DP30NJ3 SER. A

ALLEN BRADLEY SINGLE POLE 2A CIRCUIT BREAKER 1492-CB1 G020 SER. B

ALLEN BRADLEY 800T-D9 PARTS FOR SERIES T PUSH BUTTON

ALLEN BRADLEY 1492-CB3H120 SER C 3 POLE BREAKER

ALLEN BRADLEY SLC 500 PROCESSOR UNIT 1747-L524 SER. C FRN. 6 MISSING DOOR