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HM514400C Series 1,048,576-word x 4-bit Dynamic Random Access Memory Description The Hitachi HM514400C is a CMOS dynamic RAM organized 1,048,576-word x 4-bit. HM514400C has realized higher density, higher performance and various functions by employing 0.8 m CMOS process technology and some new CMOS circuit design technologies. The HM514400C offers Fast Page Mode as a high speed access mode. Multiplexed address input permits the HM514400C to be packaged in standard 300mil 26-pin plastic SOJ, standard 400-mil 20-pin plastic ZIP and 26-pin plastic TSOP II. Features * Single 5 V (10%) * High speed Access time: 60 ns/70 ns/80 ns (max) * Low power dissipation Active mode: 605 mW/550 mW/495 mW (max) Standby mode: 11 mW (max) 0.55 mW (max) (L-version) * Fast page mode capability * 1024 refresh cycles : 16 ms : 128 ms (L-version) * 3 variations of refresh RAS-only refresh CAS-before-RAS refresh Hidden refresh * Test function * Battery backup operation (L-version) HM514400C Series Ordering Information Type No. HM514400CS-6 HM514400CS-7 HM514400CS-8 HM514400CLS-6 HM514400CLS-7 HM514400CLS-8 HM514400CZ-6 HM514400CZ-7 HM514400CZ-8 HM514400CLZ-6 HM514400CLZ-7 HM514400CLZ-8 HM514400CTT-6 HM514400CTT-7 HM514400CTT-8 HM514400CLTT-6 HM514400CLTT-7 HM514400CLTT-8 Access Time 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 26-pin plastic TSOPII (TTP-26/20D) 400-mil 20-pin plastic ZIP (ZP-20) Package 300-mil 26-pin plastic SOJ (CP-26/20D) 2 HM514400C Series Pin Arrangement HM514400CS/CLS Series HM514400CZ/CLZ Series I/O1 1 I/O2 2 WE 3 RAS 4 A9 5 26 VSS 25 I/O4 24 I/O3 23 CAS 1 OE CAS 2 3 I/O3 I/O4 4 I/O1 6 WE 8 5 VSS 7 I/O2 9 RAS A9 10 11 A0 A1 12 13 A2 A3 14 A4 16 A6 18 19 A7 A8 20 (Bottom view) 15 VCC 17 A5 22 OE A0 9 A1 10 A2 11 A3 12 VCC 13 18 A8 17 A7 16 A6 15 A5 14 A4 (Top view) HM514400CTT/CLTT Series I/O1 1 I/O2 2 WE 3 RAS 4 A9 5 26 VSS 25 I/O4 24 I/O3 23 CAS 22 OE A0 9 18 A8 17 A7 16 A6 15 A5 14 A4 A1 10 A2 11 A3 12 VCC 13 (Top view) 3 HM514400C Series Pin Description Pin Name A0 to A9 A0 to A9 I/O1 to I/O4 RAS CAS WE OE VCC VSS Function Address input Refresh address input Data-in/Data-out Row address strobe Column address strobe Read/Write enable Output enable Power (+5 V) Ground 4 Block Diagram RAS Row Driver Row Driver RAS Control Circuit 256 k Memory Array Mat 256 k Memory Array Mat I/O1 I/O1 Buffer I/O Bus & Column Decoder Row Driver Row Driver I/O Bus & Column Decoder 256 k Memory Array Mat 256 k Memory Array Mat 256 k Memory Array Mat Row Driver Row Driver CAS CAS Control Circuit 256 k Memory Array Mat Row Address Buffer I/O2 I/O2 Buffer I/O Bus & Column Decoder Row Driver Row Driver I/O Bus & Column Decoder 256 k Memory Array Mat 256 k Memory Array Mat WE WE Control Circuit Row Decoder & Peripheral Circuit Address A0-A9 Row Driver Row Driver 256 k Memory Array Mat 256 k Memory Array Mat I/O Bus & Column Decoder I/O3 OE I/O3 Buffer OE Control Circuit I/O Bus & Column Decoder Row Driver Row Driver 256 k Memory Array Mat Row Driver Row Driver 256 k Memory Array Mat 256 k Memory Array Mat 256 k Memory Array Mat Column Address Buffer Row Driver Row Driver I/O4 I/O4 Buffer I/O Bus & Column Decoder I/O Bus & Column Decoder 256 k Memory Array Mat HM514400C Series 256 k Memory Array Mat 5 HM514400C Series Absolute Maximum Ratings Parameter Voltage on any pin relative to V SS Supply voltage relative to VSS Short circuit output current Power dissipation Operating temperature Storage temperature Symbol VT VCC Iout PT Topr Tstg Value -1.0 to +7.0 -1.0 to +7.0 50 1.0 0 to +70 -55 to +125 Unit V V mA W C C Recommended DC Operating Conditions (Ta = 0 to +70C) Parameter Supply voltage Symbol VSS VCC Input high voltage Input low voltage Note: VIH VIL Min 0 4.5 2.4 -1.0 Typ 0 5.0 -- -- Max 0 5.5 6.5 0.8 Unit V V V V 1 1 1 Note 1. All voltage referred to VSS . 6 HM514400C Series DC Characteristics (Ta = 0 to +70C, VCC = 5 V 10%, VSS = 0 V) HM514400C -6 Parameter Operating current Standby current *1, *2 -7 -8 Symbol Min Max Min Max Min Max Unit Test Conditions I CC1 I CC2 -- -- 110 -- 2 -- 100 -- 2 -- 90 2 mA mA RAS, CAS cycling t RC = min TTL interface RAS, CAS = VIH Dout = High-Z CMOS interface RAS, CAS V CC - 0.2 V Dout = High-Z CMOS interface RAS, CAS =VIH WE, OE, Address and Din = VIH or VIL Dout = High-Z t RC = min RAS = VIH, CAS = VIL Dout = enable t RC = min t PC = min t RC = 125 s t RAS 1 s WE = VIH, CAS = VIL OE, Address and Din = VIH or VIL Dout = High-Z 0 V Vin 7 V 0 V Vout 7 V Dout = disable High Iout = -5 mA Low Iout = 4.2 mA -- 1 -- 1 -- 1 mA Standby current (L-version)*4 I CC2 -- 100 -- 100 -- 100 A RAS-only refresh current*2 Standby current *1 I CC3 I CC5 -- -- 110 -- 5 -- 100 -- 5 -- 90 5 mA mA CAS-before-RAS refresh current Fast page mode current *1, *3 Battery backup current (Standby with CBR refresh) (L-version) *4 I CC6 I CC7 I CC10 -- -- -- 110 -- 110 -- 200 -- 100 -- 100 -- 200 -- 90 90 mA mA 200 A Input leakage current Output leakage current Output high voltage Output low voltage I LI I LO VOH VOL -10 10 -10 10 2.4 0 VCC 0.4 -10 10 -10 10 2.4 0 VCC 0.4 -10 10 -10 10 2.4 0 VCC 0.4 A A V V Notes: 1. I CC depends on output load condition when the device is selected. ICC max is specified at the output open condition. 2. Address can be changed twice or less while RAS = VIL. 3. Address can be changed once or less while CAS = VIH. 4. VCC - 0.2 V V IH 6.5 V and 0 V V IL 0.2 V. 7 HM514400C Series Capacitance (Ta = 25C, VCC = 5 V 10%) Parameter Input capacitance (Address) Input capacitance (Clocks) Output capacitance (Data-in, Data-out) Symbol CI1 CI2 CI/O Typ -- -- -- Max 5 7 7 Unit pF pF pF Notes 1 1 1, 2 Notes: 1. Capacitance measured with Boonton Meter or effective capacitance measuring method. 2. CAS = VIH to disable Dout. AC Characteristics (Ta = 0 to +70C, VCC = 5 V 10%, VSS = 0 V)*1, *14, *15, *16 Test Conditions * Input rise and fall time : 5 ns * Input timing reference levels : 0.8 V, 2.4 V * Output load : 2 TTL gate + C L (100 pF) (Including scope and jig) 8 HM514400C Series Read, Write, Read-Modify-Write and Refresh Cycles (Common parameters) HM514400C -6 Parameter Random read or write cycle time RAS precharge time RAS pulse width CAS pulse width Row address setup time Row address hold time Column address setup time Column address hold time RAS to CAS delay time RAS to column address delay time RAS hold time CAS hold time CAS to RAS precharge time OE to Din delay time OE delay time from Din CAS setup time from Din Transition time (rise and fall) Refresh period Refresh period (L-version) Symbol Min Max t RC t RP t RAS t CAS t ASR t RAH t ASC t CAH t RCD t RAD t RSH t CSH t CRP t ODD t DZO t DZC tT t REF t REF 110 -- 40 60 15 0 10 0 15 20 15 15 60 10 15 0 0 3 -- -- -- 10000 10000 -- -- -- -- 45 30 -- -- -- -- -- -- 50 16 128 -7 Min Max 130 -- 50 70 20 0 10 0 15 20 15 20 70 10 20 0 0 3 -- -- -- 10000 10000 -- -- -- -- 50 35 -- -- -- -- -- -- 50 16 128 -8 Min Max 150 -- 60 80 20 0 10 0 15 20 15 20 80 10 20 0 0 3 -- -- -- 10000 10000 -- -- -- -- 60 40 -- -- -- -- -- -- 50 16 128 Unit Notes ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ms ms 7 8 9 19 20 9 HM514400C Series Read Cycle HM514400C -6 Parameter Access time from RAS Access time from CAS Access time from address Access time from OE Read command setup time Read command hold time to CAS Read command hold time to RAS Column address to RAS lead time Output buffer turn-off time Output buffer turn-off time to OE CAS to Din delay time OE pulse width Symbol Min Max t RAC t CAC t AA t OAC t RCS t RCH t RRH t RAL t OFF1 t OFF2 t CDD t OEP -- -- -- -- 0 0 0 30 0 0 15 15 60 15 30 15 -- -- -- -- 15 15 -- -- -7 Min Max -- -- -- -- 0 0 0 35 0 0 20 20 70 20 35 20 -- -- -- -- 20 20 -- -- -8 Min -- -- -- -- 0 0 0 40 0 0 20 20 Max 80 20 40 20 -- -- -- -- 20 20 -- -- Unit Notes ns ns ns ns ns ns ns ns ns ns ns ns 6 6 18 18 2, 3, 17 3, 4, 13, 17 3, 5, 13, 17 3, 17 Write Cycle HM514400C -6 Parameter Write command setup time Write command hold time Write command pulse width Write command to RAS lead time Write command to CAS lead time Data-in setup time Data-in hold time Symbol Min Max t WCS t WCH t WP t RWL t CWL t DS t DH 0 15 10 15 15 0 15 -- -- -- -- -- -- -- -7 Min Max 0 15 10 20 20 0 15 -- -- -- -- -- -- -- -8 Min Max 0 15 10 20 20 0 15 -- -- -- -- -- -- -- Unit Notes ns ns ns ns ns ns ns 11 11 10 10 HM514400C Series Read-Modify-Write Cycle HM514400C -6 Parameter Read-modify-write cycle time RAS to WE delay time CAS to WE delay time Column address to WE delay time OE hold time from WE Symbol Min Max t RWC t RWD t CWD t AWD t OEH 150 -- 80 35 50 15 -- -- -- -- -7 Min Max 180 -- 95 45 60 20 -- -- -- -- -8 Min Max 200 -- 105 -- 45 65 20 -- -- -- Unit Notes ns ns ns ns ns 10 10 10 Refresh Cycle HM514400C -6 Parameter Symbol Min Max 10 10 10 10 -- -- -- -- -7 Min Max 10 10 10 10 -- -- -- -- -8 Min Max 10 10 10 10 -- -- -- -- Unit Notes ns ns ns ns CAS setup time (CBR refresh cycle) t CSR CAS hold time (CBR refresh cycle) RAS precharge to CAS hold time t CHR t RPC CAS precharge time in normal mode t CPN Fast Page Mode Cycle HM514400C -6 Parameter Fast page mode cycle time Symbol Min Max t PC 40 10 -- -- 35 -- -- -7 Min Max 45 10 -- -- -8 Min Max 50 10 -- -- Unit Notes ns ns 12 3, 13, 17 Fast page mode CAS precharge time t CP Fast page mode RAS pulse width Access time from CAS precharge RAS hold time from CAS precharge t RASC t ACP t RHCP 100000 -- 35 -- -- 40 100000 -- 40 -- -- 45 100000 ns 45 -- ns ns 11 HM514400C Series Fast Page Mode Read-Modify-Write Cycle HM514400C -6 Parameter Fast page mode read-modify-write cycle time Fast page mode read-modify-write cycle CAS precharge to WE delay time Symbol Min Max t PCM t CPW 80 55 -- -- -7 Min Max 95 65 -- -- -8 Min Max 100 -- 70 -- Unit Notes ns ns 10 Test Mode Cycle HM514400C -6 Parameter Test mode WE setup time Test mode WE hold time Symbol Min Max t WS t WH 0 10 -- -- -7 Min Max 0 10 -- -- -8 Min Max 0 10 -- -- Unit Notes ns ns Counter Test Cycle HM514400C -6 Parameter CAS precharge time in counter test cycle Symbol Min Max t CPT 40 -- -7 Min Max 40 -- -8 Min Max 40 -- Unit Notes ns 12 HM514400C Series Notes: 1. AC measurements assume t T = 5 ns. 2. Assumes that t RCD tRCD (max) and tRAD tRAD (max). If tRCD or tRAD is greater than the maximum recommended value shown in this table, t RAC exceeds the value shown. 3. Measured with a load circuit equivalent to 2 TTL loads and 100 pF. 4. Assumes that t RCD tRCD (max) and tRAD tRAD (max). 5. Assumes that t RCD tRCD (max) and tRAD tRAD (max). 6. t OFF (max) defines the time at which the output achieves the open circuit condition and is not referred to output voltage levels. 7. VIH (min) and VIL (max) are reference levels for measuring timing of input signals. Also, transition times are measured between V IH and VIL. 8. Operation with the tRCD (max) limit insures that tRAC (max) can be met, tRCD (max) is specified as a reference point only, if t RCD is greater than the specified tRCD (max) limit, then access time is controlled exclusively by tCAC . 9. Operation with the tRAD (max) limit insures that tRAC (max) can be met, tRAD (max) is specified as a reference point only, if t RAD is greater than the specified tRAD (max) limit, then access time is controlled exclusively by tAA . 10. t WCS , t RWD, t CWD, t CPW and t AWD are not restrictive operating parameters. They are included in the data sheet as electrical characteristics only; if t WCS tWCS (min), the cycle is an early write cycle and the data out pin will remain open circuit (high impedance) throughout the entire cycle; if t RWD tRWD (min), tCWD tCWD (min), tCPW tCPW (min) and tAWD tAWD (min), the cycle is a read-modify-write and the data output will contain data read from the selected cell; if neither of the above sets of conditions is satisfied, the condition of the data out (at access time) is indeterminate. 11. These parameters are referred to CAS leading edge in an early write cycle and to WE leading edge in a delayed write or read-modify-write cycle. 12. t RASC defines RAS pulse width in fast page mode cycles. 13. Access time is determined by the longest among t AA , t CAC and t ACP. 14. An initial pause of 100 s is required after power up followed by a minimum of eight initialization cycles (RAS-only refresh cycle or CAS-before-RAS refresh cycle). If the internal refresh counter is used, a minimum of eight CAS-before-RAS refresh cycles is required. 15. In delayed write or read-modify-write cycles, OE must disable output buffer prior to applying data to the device. 16. Test mode operation specified in this data sheet is 2-bit test function controlled by control address bits - - - CA0. This test mode operation can be performed by WE-and-CAS-before-RAS (WCBR) refresh cycle. Refresh during test mode operation will be performed by normal read cycles or by WCBR refresh cycles. When the state of two test bits accord each other, the condition of the output data is high level. When the state of test bits do not accord, the condition of the output data is low level. In order to end this test mode operation, perform a RAS-only refresh cycle or a CASbefore-RAS refresh cycle. 17. In a test mode read cycle, the value of tRAC , t AA , t CAC , t OAC and t ACP is delayed for 2 ns to 5ns for the specified value. These parameters should be specified in test mode cycles by adding the above value to the specified value in this data sheet. 18. Either t RCH or tRRH must be satisfied 19. t RAS (min) = tRWD (min) + tRWL (min) + tT in read-modify-write cycle. 20. t CAS (min) = tCWD (min) + tCWL (min) + tT in read-modify-write cycle. 21. XXX: H or L (H: V IH (min) V IN V IH (max), L: VIL (min) V IN V IL (max)) ///////: Invalid Dout 13 HM514400C Series Timing Waveforms*21 Read Cycle t RC t RAS RAS tT t RCD t RSH t CAS t CSH t RP t CRP CAS t RAD t ASR t RAH t ASC t RAL t CAH Address Row Column t RCS t RCH WE t CAC t AA Dout t RAC t DZC Din t DZO High-Z t OAC t RRH t OFF1 Dout t OFF2 t CDD t ODD t OEP OE 14 HM514400C Series Early Write Cycle t RC t RAS RAS tT t RCD t CSH CAS t RSH t CAS t RP t CRP t ASR t RAH t ASC t CAH Address Row Column t WCS t WCH WE t DS t DH Din Din Dout High-Z* * t WCS t WCS (min) ** OE : H or L 15 HM514400C Series Delayed Write Cycle t RC t RAS t RP RAS t CSH t RCD tT t RSH t CAS t CRP CAS t ASR t RAH t ASC t CAH Column t CWL t RWL Address Row t RCS t WP , + $ WE t DS t DH Din High-Z Din t DZC t DZO t ODD t OEH Dout Invalid Dout* t OFF2 OE * * Invalid Dout comes out, when OE is low level. 16 HM514400C Series Read-Modify-Write Cycle t RWC t RAS t RP RAS tT t RCD t CAS t CRP CAS t RAD t ASR t RAH t ASC tCAH Address Row t RCS Column t CWD t AWD t CWL t RWL t WP WE t RWD t RAC t DZC Din High-Z t AA t CAC t DS t DH Din Dout t OAC Dout t OFF2 t DZO OE t OEP t ODD t OEH 17 HM514400C Series Hidden Refresh Cycle tRC t RAS (Read) t RC t RP t RAS (Refresh) t RC t RP t RAS (Refresh) tRP RAS tT t RSH t RCD CAS t ASC t ASR t RAD t RAH Address Row t RAL t CAH Column t RCH t RRH t RCS WE t RAC Dout t DZC Dout t OFF2 High-Z tDZO t OAC t ODD t CAC t AA t OFF1 t CAS t CHR t CRP t CDD Din OE 18 HM514400C Series Fast Page Mode Read Cycle t RASC t RHCP t RP RAS tT t CSH t RCD CAS t ASR t RAD t RAH Address Row tASC t CAH Column t ASC t CAH Column t ASC t CAH Column t RAL t CAS t CP t PC t CAS t CP t RSH t CAS t CRP t RCS t RCS WE t DZC t CDD Din High-Z t ODD t CAC t RAC t AA t DZC t CDD High-Z tCAC t AA t ACP t OFF1 Dout t OAC t DZO t OFF2 t OEP Dout t DZO t OEP Dout t RCH t RCH t RCS t RRH t RCH t DZC t CDD High-Z t CAC t AA t ACP t OFF1 t DZO Dout t ODD t OFF2 t OEP t OAC t OFF2 t ODD t OFF1 OE t OAC 19 HM514400C Series Fast Page Mode Early Write Cycle t RASC t RP RAS tT t CSH t RCD t CAS t CP t PC t CAS t CP t RSH t CAS t CRP CAS t ASR t RAH t ASC t CAH t ASC t CAH t ASC t CAH Address Row Column Column Column t WCS t WCH t WCS t WCH t WCS t WCH WE t DS t DH t DS t DH t DS t DH Din Din Din Din Dout High-Z * OE : H or L 20 HM514400C Series Fast Page Mode Delayed Write Cycle t RASC t RP RAS tT tRCD t CSH t CAS t PC t CP t CAS t CP t RSH t CAS t CRP CAS t ASR t RAH t ASC t CAH Column t CWL t RCS t WP WE t DH t DS t RCS t DS t DH t RCS t DS Din t DH t ASC t CAH t ASC t CAH Address Row Column t CWL t WP Column t CWL t WP t RWL Din Din Din t OEH Dout t ODD High-Z OE 21 HM514400C Series Fast Page Mode Read-Modify-Write Cycle t RASC RAS t RCD tT t CAS CAS t RAD t RAH t ASR t CAH t ASC t ACP t ASC t CAH t CAH t ASC t CP t CAS t PCM t CP t CAS t CRP t RP Address Row Column t AWD t CWD t RWD t CWL t WP t RCS Column t AWD t CWD t CPW t CWL t WP Column t CPW t AWD t RCS t CWD t CWL t RWL t WP t RCS WE t CAC t DS t DH High-Z tAA t RAC tOAC Dout t DZO Dout t OFF2 t DZO t OEH t OAC Dout t OFF2 t OEH t DZC t CAC t DS t DH t ACP t DZC High-Z t CAC t AA t OAC Dout t OFF2 t OEH t DS t DH t DZC Din Din High-Z t AA Din Din t DZO OE t ODD t OEP t OEP t ODD tOEP t ODD 22 HM514400C Series Test Mode Cycle *,** Reset Cycle Set Cycle** Test Mode Cycle Normal Mode RAS CAS WE * CBR or RAS-only refresh ** Address, Din, OE: H or L 23 HM514400C Series Test Mode Set Cycle WE-and-CAS-Before RAS-Refresh Cycle t RC t RP t RAS t RP RAS t RPC t CSR tT CAS t CPN t WS t CHR t RPC t CRP t WH WE Address t OFF1 Dout High-Z 24 SS QR CC AB P @ , t CPN * Din, OE : H or L HM514400C Series CAS-Before-RAS Refresh Cycle t RC t RP t RAS t RP RAS tT t CPN t RPC t CSR t CHR t CPN t RPC t CRP , t WS t WH WE Address t OFF1 Dout High-Z CAS * Din, OE : H or L 25 HM514400C Series RAS-Only Refresh Cycle t RC t RAS t RP RAS tT t CRP tRPC tCRP CAS t ASR t RAH Address Row Dout High-Z * Refresh address : A0 - A9 (AX0 - AX9) ** Din, OE, WE : H or L 26 HM514400C Series CAS-Before-RAS Refresh Counter Check Cycle (Read) t RAS RAS tT t CSR t CHR t CPT t RSH t CAS tCRP t RP CAS t ASC t CAH Address Column t RCH t RRH t WS t WH t RCS WE t DZC t CDD Din t CAC t AA High-Z t OFF1 Dout t DZO t OAC Dout t OFF2 t OEP t ODD OE 27 HM514400C Series CAS-Before-RAS Refresh Counter Check Cycle (Write) t RAS RAS tT t CSR t CHR t CPT t RSH t CAS t CRP t RP CAS t ASC t CAH Address Column t WS t WH t WCS t WCH WE t DS t DH Din Din Dout High-Z OE 28 HM514400C Series Package Dimensions HM514400CS/CLS Series (CP-26/20D) 16.90 17.27 Max 22 18 Unit: mm 26 14 7.62 0.13 1 3.50 0.26 5 0.74 1.30 Max 9 13 0.21 2.40 + 0.24 - 8.51 0.13 0.80 6.71 0.28 +0.25 -0.17 0.43 0.10 0.10 1.27 HM514400CZ/CLZ Series (ZP-20) Unit: mm 25.61 26.11 Max 2.80 Min 10.16 Max 8.51 0.25 - 0.05 + 0.10 1 0.50 - 0.12 + 0.08 20 1.27 0.3 M 1.14 Max 2.85 2.54 29 HM514400C Series HM514400CTT/CLTT Series (TTP-26/20D) 17.14 17.54 Max 26 22 18 14 7.62 Unit: mm 1 5 1.27 9 13 0.40 0.10 0.21 1.15 Max M 9.22 0.2 0 - 5 0.13 0.05 1.20 Max 0.10 0.17 0.05 5.08 0.80 0.50 0.10 30 |
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