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1 of 13 083006 features 10 years minimum data retention in the absence of external power data is automatically protected during power loss replaces 32k x 8 volatile static ram, eeprom or flash memory unlimited write cycles low-power cmos read and write access times as fast as 70 ns lithium energy source is electrically disconnected to retain freshness until power is applied for the first time full 10% v cc operating range (ds1230y) optional 5% v cc operating range (ds1230ab) optional industrial temperature range of -40 c to +85 c, designated ind jedec standard 28-pin dip package powercap module (pcm) package - directly surface -mountable module - replaceable snap-on powercap provides lithium backup battery - standardized pinout for all nonvolatile sram products - detachment feature on powercap allows easy removal using a regular screwdriver pin assignment pin description a0 - a14 - address inputs dq0 - dq7 - data in/data out ce - chip enable we - write enable oe - output enable v cc - power (+5v) gnd - ground nc - no connect ds1230y/ab 256k nonvolatile sram www.maxim-ic.com 13 1 2 3 4 5 6 7 8 9 10 11 12 14 27 28-pin encapsulated package 740-mil extended a14 a7 a5 a4 a3 a2 a1 a0 dq1 dq0 v cc we a 13 a 8 a 9 a 11 oe a 10 ce dq7 dq5 dq6 28 26 25 24 23 22 21 20 19 18 17 15 16 a12 a6 dq2 gnd dq4 dq3 1 nc 2 3 nc nc nc v cc we oe ce dq7 dq6 dq5 dq4 dq3 dq2 dq1 dq0 gnd 4 5 6 7 8 9 10 11 12 13 14 15 16 17 nc a 14 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 a 13 a 12 a 11 a 10 a 9 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 34 nc gnd v bat 34-pin powercap module (pcm) (uses ds9034pc powercap)
ds1230y/ab 2 of 13 description the ds1230 256k nonvolatile srams are 262,144-bit, fully static, nonvolatile srams organized as 32,768 words by 8 bits. each nv sram has a self-cont ained lithium energy source and control circuitry which constantly monitors v cc for an out-of-tolerance condition. when such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. dip-package ds1230 devices can be used in place of existing 32k x 8 static rams directly conforming to the popular bytewide 28- pin dip standard. the dip devices also match the pinout of 28256 eeproms, allowing direct substituti on while enhancing performance. ds1230 devices in the low profile module package are specifically desi gned for surface-mount applications. there is no limit on the number of write cycles that can be execute d and no additional support ci rcuitry is required for microprocessor interfacing. read mode the ds1230 devices execute a read cycle whenever we (write enable) is inactive (high) and ce (chip enable) and oe (output enable) are active (low). the unique address specified by the 15 address inputs (a 0 - a 14 ) defines which of the 32,768 bytes of data is to be accessed. valid data will be available to the eight data output drivers within t acc (access time) after the last address input signal is stable, providing that ce and oe (output enable) access times are also satisfied. if oe and ce access times are not satisfied, then data access must be measured from the later-occurring signal ( ce or oe ) and the limiting parameter is either t co for ce or t oe for oe rather than address access. write mode the ds1230 devices execute a write cycle whenever the we and ce signals are active (low) after address inputs are stable. the later-occurring falling edge of ce or we will determine the start of the write cycle. the write cycle is terminated by the earlier rising edge of ce or we . all address inputs must be kept valid throughout the write cycle. we must return to the high state for a minimum recovery time (t wr ) before another cycle can be initiated. the oe control signal should be kept inactive (high) during write cycles to avoid bus contention. howe ver, if the output drivers are enabled ( ce and oe active) then we will disable the outputs in t odw from its falling edge. data retention mode the ds1230ab provides full functional capability for v cc greater than 4.75 volts and write protects by 4.5 volts. the ds1230y provides full functional capability for v cc greater than 4.5 volts and write protects by 4.25 volts. data is ma intained in the absence of v cc without any additional support circuitry. the nonvolatile static rams constantly monitor v cc . should the supply voltage decay, the nv srams automatically write protect themselves, all inputs become ?don?t care,? and all outputs become high- impedance. as v cc falls below approximately 3.0 volts, a power switching circuit connects the lithium energy source to ram to retain data. during power-up, when v cc rises above approx imately 3.0 volts the power switching circuit connects external v cc to ram and disconnects the lithium energy source. normal ram operation can resume after v cc exceeds 4.75 volts for the ds1230ab and 4.5 volts for the ds1230y. freshness seal each ds1230 device is shipped fro m dallas semiconductor w ith its lithium energy source disconnected, guaranteeing full energy capacity. when v cc is first applied at a level greater than 4.25 volts, the lithium energy source is enabled for battery back-up operation.
ds1230y/ab 3 of 13 packages the ds1230 devices are available in two packages: 28-pin dip and 34-pin powercap module (pcm). the 28-pin dip integrates a lithium battery, an sram memory and a nonvolatile control function into a single package with a jedec-standard, 600-mil dip pinout. the 34-pin powercap module integrates sram memory and nonvolatile control along with contacts for connection to the lithium battery in the ds9034pc powercap. the powercap module package design allows a ds1230 pcm device to be surface mounted without subjecting its lithium backup battery to destructive high-temperature reflow soldering. after a ds1230 pcm is reflow solder ed, a ds9034pc powercap is snapped on top of the pcm to form a complete nonvolatile sram modul e. the ds9034pc is keyed to prevent improper attachment. ds1230 powercap modules and ds9034pc po wercaps are ordered se parately and shipped in separate containers. see the ds9034pc data sheet for further information. absolute maximum ratings* voltage on any pin relative to ground -0.3v to +6.0v operating temperature 0c to 70c, -40c to +85c for ind parts storage temperature -40c to +70c, -40c to +85c for ind parts soldering temperature dip module +260c for 10 seconds caution: do not reflow (wave or hand solder only) powercap module see ipc/jedec j-std-020 * this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect reliability. recommended dc operating conditions (t a : see note 10) parameter symbol min typ max units notes ds1230ab power supply voltage v cc 4.75 5.0 5.25 v ds1230y power supply voltage v cc 4.5 5.0 5.5 v logic 1 v ih 2.2 v cc v logic 0 v il 0.0 0.8 v dc electrical (v cc =5v 5% for ds1230ab) characteristics (t a : see note 10) (v cc =5v 10% for ds1230y) parameter symbol min typ max units notes input leakage current i il -1.0 +1.0 a i/o leakage current ce v ih v cc i io -1.0 +1.0 a output current @ 2.4v i oh -1.0 ma output current @ 0.4v i ol 2.0 ma standby current ce =2.2v i ccs1 200 600 a standby current ce =v cc -0.5v i ccs2 50 150 a operating current i cco1 85 ma write protection voltage (ds1230ab) v tp 4.50 4.62 4.75 v write protection voltage (ds1230y) v tp 4.25 4.37 4.5 v
ds1230y/ab 4 of 13 capacitance (t a =25 c) parameter symbol min typ max units notes input capacitance c in 5 10 pf input/output capacitance c i/o 5 10 pf ac electrical (v cc =5v 5% for ds1230ab) characteristics (t a : see note 10) (v cc =5v 10% for ds1230y) ds1230ab-70 ds1230y-70 ds1230ab-85 ds1230y-85 ds1230ab-100 ds1230y-100 parameter symbol min max min max min max units notes read cycle time t rc 70 85 100 ns access time t acc 70 85 100 ns oe to output valid t oe 35 45 50 ns ce to output valid t co 70 85 100 ns oe or ce to output active t coe 5 5 5 ns 5 output high z from deselection t od 25 30 35 ns 5 output hold from address change t oh 5 5 5 ns write cycle time t wc 70 85 100 ns write pulse width t wp 55 65 75 ns 3 address setup time t aw 0 0 0 ns write recovery time t wr1 t wr2 5 15 5 15 5 15 ns 12 13 output high z from we t odw 25 30 35 ns 5 output active from we t oew 5 5 5 ns 5 data setup time t ds 30 35 40 ns 4 data hold time t dh1 t dh2 0 10 0 10 0 10 ns 12 13
ds1230y/ab 5 of 13 ac electrical characteristics (cont'd) ds1230ab-120 ds1230y-120 ds1230ab-150 ds1230y-150 ds1230ab-200 ds1230y-200 parameter symbol min max min max min max units notes read cycle time t rc 120 150 200 ns access time t acc 120 150 200 ns oe to output valid t oe 60 70 100 ns ce to output valid t co 120 150 200 ns oe or ce to output active t coe 5 5 5 ns 5 output high z from deselection t od 35 35 35 ns 5 output hold from address change t oh 5 5 5 ns write cycle time t wc 120 150 200 ns write pulse width t wp 90 100 100 ns 3 address setup time t aw 0 0 0 ns write recovery time t wr1 t wr2 5 15 5 15 5 15 ns 12 13 output high z from we t odw 35 35 35 ns 5 output active from we t oew 5 5 5 ns 5 data setup time t ds 50 60 80 ns 4 data hold time t dh1 t dh2 0 10 0 10 0 10 ns 12 13
ds1230y/ab 6 of 13 read cycle see note 1 write cycle 1 see notes 2, 3, 4, 6, 7, 8, and 12
ds1230y/ab 7 of 13 write cycle 2 see notes 2, 3, 4, 6, 7, 8, and 13 power-down/power-up condition see note 11 power-down/power-up timing (t a : see note 10) parameter symbol min typ max units notes v cc fail detect to ce and we inactive t pd 1.5 s 11 v cc slew from v tp to 0v t f 150 s v cc slew from 0v to v tp t r 150 s v cc valid to ce and we inactive t pu 2 ms v cc valid to end of write protection t rec 125 ms
ds1230y/ab 8 of 13 (t a =25 c) parameter symbol min typ max units notes expected data retention time t dr 10 years 9 warning: under no circumstance are negative undershoots, of an y amplitude, allowed when device is in battery backup mode. notes: 1. we is high for a read cycle. 2. oe = v ih or v il . if oe = v ih during write cycle, the output buffers remain in a high-impedance state. 3. t wp is specified as the logical and of ce and we . t wp is measured from the latter of ce or we going low to the earlier of ce or we going high. 4. t dh , t ds are measured from the earlier of ce or we going high. 5. these parameters are sampled with a 5 pf load and are not 100% tested. 6. if the ce low transition occurs simultaneously with or latter than the we low transition, the output buffers remain in a high-impedance state during this period. 7. if the ce high transition occurs prior to or simultaneously with the we high transition, the output buffers remain in high-impedance state during this period. 8. if we is low or the we low transition occurs prior to or simultaneously with the ce low transition, the output buffers remain in a high -impedance state during this period. 9. each ds1230 has a built-in switch that disconnects the lithium source until the user first applies v cc . the expected t dr is defined as accumulative time in the absence of v cc starting from the time power is first applied by the user. this parameter is as sured by component selection, process control, and design. it is not measured directly during production testing. 10. all ac and dc electrical charac teristics are valid over the full operating temperature range. for commercial products, this range is 0 c to 70 c. for industrial products (ind), this range is -40 c to +85 c. 11. in a power-down condition the voltage on any pin may not exceed the voltage on v cc . 12. t wr1 and t dh1 are measured from we going high. 13. t wr2 and t dh2 are measured from ce going high. 14. ds1230 modules are recognized by underwriters laboratory (u.l. ) under file e99151. dc test conditions ac test conditions outputs open output load: 100 pf + 1ttl gate cycle = 200 ns for operating current input pulse levels: 0 - 3.0v all voltages are referenced to ground timing measurement reference levels input: 1.5v output: 1.5v input pulse rise and fall times: 5 ns
ds1230y/ab 9 of 13 ordering information part number temperature range supply tolerance pin/package speed grade ds1230ab-70 0c to +70c 5v 5% 28 / 740 emod 70ns ds1230ab-70+ 0c to +70c 5v 5% 28 / 740 emod 70ns ds1230abp-70 0c to +70c 5v 5% 34 / powercap* 70ns ds1230abp-70+ 0c to +70c 5v 5% 34 / powercap* 70ns ds1230ab-70ind -40c to +85c 5v 5% 28 / 740 emod 70ns ds1230ab-70ind+ -40c to +85c 5v 5% 28 / 740 emod 70ns ds1230abp-70ind -40c to +85c 5v 5% 34 / powercap* 70ns ds1230abp-70ind+ -40c to +85c 5v 5% 34 / powercap* 70ns ds1230ab-85 0c to +70c 5v 5% 28 / 740 emod 85ns ds1230ab-85+ 0c to +70c 5v 5% 28 / 740 emod 85ns ds1230ab-100 0c to +70c 5v 5% 28 / 740 emod 100ns ds1230ab-100+ 0c to +70c 5v 5% 28 / 740 emod 100ns ds1230abp-100 0c to +70c 5v 5% 34 / powercap* 100ns ds1230abp-100+ 0c to +70c 5v 5% 34 / powercap* 100ns ds1230ab-120 0c to +70c 5v 5% 28 / 740 emod 120ns ds1230ab-120+ 0c to +70c 5v 5% 28 / 740 emod 120ns ds1230ab-120ind -40c to +85c 5v 5% 28 / 740 emod 120ns ds1230ab-120ind+ -40c to +85c 5v 5% 28 / 740 emod 120ns ds1230ab-150 0c to +70c 5v 5% 28 / 740 emod 150ns ds1230ab-150+ 0c to +70c 5v 5% 28 / 740 emod 150ns ds1230ab-200 0c to +70c 5v 5% 28 / 740 emod 200ns ds1230ab-200+ 0c to +70c 5v 5% 28 / 740 emod 200ns ds1230ab-200ind -40c to +85c 5v 5% 28 / 740 emod 200ns ds1230ab-200ind+ -40c to +85c 5v 5% 28 / 740 emod 200ns ds1230y-70 0c to +70c 5v 10% 28 / 740 emod 70ns ds1230y-70+ 0c to +70c 5v 10% 28 / 740 emod 70ns ds1230yp-70 0c to +70c 5v 10% 34 / powercap* 70ns ds1230yp-70+ 0c to +70c 5v 10% 34 / powercap* 70ns ds1230y-70ind -40c to +85c 5v 10% 28 / 740 emod 70ns ds1230y-70ind+ -40c to +85c 5v 10% 28 / 740 emod 70ns ds1230yp-70ind -40c to +85c 5v 10% 34 / powercap* 70ns ds1230yp-70ind+ -40c to +85c 5v 10% 34 / powercap* 70ns ds1230y-85 0c to +70c 5v 10% 28 / 740 emod 85ns ds1230y-85+ 0c to +70c 5v 10% 28 / 740 emod 85ns ds1230y-100 0c to +70c 5v 10% 28 / 740 emod 100ns ds1230y-100+ 0c to +70c 5v 10% 28 / 740 emod 100ns ds1230yp-100 0c to +70c 5v 10% 34 / powercap* 100ns ds1230yp-100+ 0c to +70c 5v 10% 34 / powercap* 100ns ds1230y-120 0c to +70c 5v 10% 28 / 740 emod 120ns ds1230y-120+ 0c to +70c 5v 10% 28 / 740 emod 120ns ds1230y-120ind -40c to +85c 5v 10% 28 / 740 emod 120ns ds1230y-120ind+ -40c to +85c 5v 10% 28 / 740 emod 120ns ds1230y-150 0c to +70c 5v 10% 28 / 740 emod 150ns ds1230y-150+ 0c to +70c 5v 10% 28 / 740 emod 150ns ds1230y-200 0c to +70c 5v 10% 28 / 740 emod 200ns ds1230y-200+ 0c to +70c 5v 10% 28 / 740 emod 200ns ds1230y-200ind -40c to +85c 5v 10% 28 / 740 emod 200ns ds1230y-200ind+ -40c to +85c 5v 10% 28 / 740 emod 200ns + denotes lead-free/rohs-compliant product. * ds9034pc or ds9034pci (powercap) required. must be ordered separately.
ds1230y/ab 10 of 13 ds1230y/ab nonvolatile sram, 28-pin 740-mil extended dip module pkg 28-pin dim min max a in. mm 1.480 37.60 1.500 38.10 b in. mm 0.720 18.29 0.740 18.80 c in. mm 0.355 9.02 0.375 9.52 d in. mm 0.080 2.03 0.110 2.79 e in. mm 0.015 0.38 0.025 0.63 f in. mm 0.120 3.05 0.160 4.06 g in. mm 0.090 2.29 0.110 2.79 h in. mm 0.590 14.99 0.630 16.00 j in. mm 0.008 0.20 0.012 0.30 k in. mm 0.015 0.38 0.021 0.53
ds1230y/ab 11 of 13 inches pkg dim min nom max a 0.920 0.925 0.930 b 0.980 0.985 0.990 c - - 0.080 d 0.052 0.055 0.058 e 0.048 0.050 0.052 f 0.015 0.020 0.025 g 0.020 0.025 0.030 ds1230y/ab nonvolatile sram, 34-pin powercap module
ds1230y/ab 12 of 13 ds1230y/ab nonvolatile sram, 34- pin powercap module with powercap inches pkg dim min nom max a 0.920 0.925 0.930 b 0.955 0.960 0.965 c 0.240 0.245 0.250 d 0.052 0.055 0.058 e 0.048 0.050 0.052 f 0.015 0.020 0.025 g 0.020 0.025 0.030 assembly and use reflow soldering dallas semiconductor recommends that powercap module bases experience one pass through solder reflow oriented label- side up (live-bug). hand soldering and touch-up do not touch soldering iron to leads for more than 3 seconds. to solder, apply flux to the pad, heat the lead frame pad and apply solder. to remove part, apply flux, heat pad until solder reflows, and use a solder wick. lpm replacement in a socket to replace a low profile module in a 68-pin plcc so cket, attach a ds9034pc powercap to a module base then insert the complete module into the so cket one row of leads at a time, pushing only on the corners of the cap. never apply force to the center of the device. to remove from a socket, use a plcc extraction tool and ensure that it does not hit or da mage any of the module ic components. do not use any other tool for extraction.
ds1230y/ab 13 of 13 recommended powercap module land pattern inches pkg dim min nom max a - 1.050 - b - 0.826 - c - 0.050 - d - 0.030 - e - 0.112 - recommended powercap module solder stencil inches pkg dim min nom max a - 1.050 - b - 0.890 - c - 0.050 - d - 0.030 - e - 0.080 -
e nglish ? ???? ? ??? ? ??? what's ne w p roducts solutions de sign ap p note s sup p ort buy comp any me mbe rs ds1230y part number table notes: see the ds1230y quickview data sheet for further information on this product family or download the ds1230y full data sheet (pdf, 240kb). 1. other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales . 2. didn't find what you need? ask our applications engineers. expert assistance in finding parts, usually within one business day. 3. part number suffixes: t or t&r = tape and reel; + = rohs/lead-free; # = rohs/lead-exempt. more: see full data sheet or part naming c onventions . 4. * some packages have variations, listed on the drawing. "pkgc ode/variation" tells which variation the product uses. 5. part number notes free sample buy direct package: type pins size drawing code/var * temp rohs/lead-free? materials analysis DS1230YL-70 0c to +70c rohs/lead-free: no ds1230yl-100 lpm;34 pin;960 use pkgcode/variation: lpm-34 * 0c to +70c rohs/lead-free: no ds1230y-fir 0c to +70c rohs/lead-free: no ds1230y-120+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis ds1230y-85+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis ds1230y-200+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis ds1230y-70+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis
ds1230y-100+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis ds1230y-150+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * 0c to +70c rohs/lead-free: yes materials analysis ds1230y-100 10% tolerance, 100ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-120 10% tolerance, 120ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-150 10% tolerance, 150ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-200 10% tolerance, 200ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-70 10% tolerance, 70ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-85 10% tolerance, 85ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * 0c to +70c rohs/lead-free: no materials analysis ds1230y-70ind 10% tolerance, 70ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * -40c to +85c rohs/lead-free: no materials analysis ds1230y-120ind 10% tolerance, 120ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * -40c to +85c rohs/lead-free: no materials analysis ds1230y-120ind+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * -40c to +85c rohs/lead-free: yes materials analysis ds1230y-70ind+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * -40c to +85c rohs/lead-free: yes materials analysis ds1230y-200ind+ mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28+3 * -40c to +85c rohs/lead-free: yes materials analysis ds1230y-200ind 10% tolerance, 200ns mod;28 pin;600 dwg: 56-g0002-001a (pdf) use pkgcode/variation: mdt28-3 * -40c to +85c rohs/lead-free: no materials analysis ds1230yp-100+ pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2+4 * 0c to +70c rohs/lead-free: yes materials analysis ds1230yp-70+ pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2+4 * 0c to +70c rohs/lead-free: yes materials analysis
ds1230yp-70 10% tolerance, 70ns pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2-4 * 0c to +70c rohs/lead-free: no materials analysis ds1230yp-100 10% tolerance, 100ns pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2-4 * 0c to +70c rohs/lead-free: no materials analysis ds1230yp-70ind 10% tolerance, 70ns pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2-4 * -40c to +85c rohs/lead-free: no materials analysis ds1230yp-70ind+ pwrc p;34 pin;960 dwg: 56-g0003-001a1 (pdf) use pkgcode/variation: pc 2+4 * -40c to +85c rohs/lead-free: yes materials analysis didn't find what you need? c ontac t us: send us an email c opyright 2 0 0 7 by m axim i ntegrated p roduc ts , dallas semic onduc tor ? legal n otic es ? p rivac y p olic y

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