MX23L6412 SEQUENTIAL 64M-BIT MASK ROM FEATURES • Bit organization - 4M x 16 (word mode only) - 256 words/page - Total 16K pages • Sequential access at 200ns cycle time in a page • Asynchronous chip enable input (ALEH, ALEL) • Access time - Read latency time: 950ns - Read cycle time: 200ns - RD access time: 150ns • Current - Operating:25mA(max.) - Address input:2mA(max.) - Standby:20uA(max.) • Supply voltage - 3.0V~3.6V • Package - 32 pin TSOP ORDER INFORMATION Part No. MX23L6412TC-20 Read Cycle Time 200ns Package 32 pin TSOP GENERAL DESCRIPTION are not used internally. As for low 16 bit address, A1~A8 are through 8 bit address counter, A9~A15 are through 7 bit address register, and A0 are not used internally. High address input must be done before low address input, and both address inputs are needed for page change or address change in a same page. After address inputs, CE goes high at ALEH falling edge and RD doesn't toggle, the ROM is in stand-by mode. The product is a 64M bits (4M x 16) mask ROM composed of 16K pages, and each consists of 256 words memory cell array. This mask ROM has a 16 bit address input / data output bus (AD0~AD15), two address latch enable pins (high : ALEH, low : ALEL), a read strobe (RD). There are 3 modes, Stand-by mode, Active mode, and Address input mode. Stand-by mode is a non-operating state, and has the smallest current dissipation. Active mode is an operating state, and data output is possible. Address input mode is a state of address input. After ROM turned into Active mode from Address input mode, it takes tL time to read. In a page, sequential read access is possible at tCYC cycle time. Sequential read operation (increment of internal address counter) is done at every falling edge of RD. At the end of a page, internal address counter raps around to the beginning of the page. Address input is through AD bus when ALEL is high. The high and low 16 bit addresses are latched at ALEH’sand ALEL falling edges. As for high 16 bit address, A0~A6 are through 7 bit address register, A7~A15 P/N:PM0652 REV. 1.5, MAR. 11, 2003 1 MX23L6412 PIN CONFIGURATION PIN DESCRIPTION 32 TSOP NC CE VSS AD12 AD13 AD14 AD15 NC NC AD0 AD1 AD2 AD3 VCC ALEL NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 MX23L6412 Symbol AD0~AD15 ALEH ALEL CE RD VCC VSS NC NC RD VCC AD11 AD10 AD9 AD8 NC NC AD7 AD6 AD5 AD4 VSS ALEH NC Pin Function Address Input / Data Output Address Latch Enable High Address Latch Enable Low Chip Enable Input Read Strobe Input Power Supply Pin Ground Pin No Connection TRUTH TABLE Mode Operation CE ALEH ALEL RD AD Bus Address Input High address input L H H X Address input Address Input Low address input X L H X Address input Active Internally active X L L H Floating Active Data read X L L L Data output Stand-by Stand-by * X H-->L L X Floating Note: Please see "standby mode" timing diagram. BLOCK DIAGRAM RD ALEH ALEL Enable CE Reg. Address Register Row Decoder Address Register Output Buffer AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 Input Buffer CE Memory Cell Array 256 words/ Page Column Decoder Address Presettable Counter Enable Latch x 16 Clock P/N:PM0652 REV. 1.5, MAR. 11, 2003 2 MX23L6412 ABSOLUTE MAXIMUM RATINGS Item Voltage on any Pin Relative to VSS Ambient Operating Temperature Storage Temperature Symbol VIN Topr Tstg Ratings -0.5V to 4.6V 0° C to 70° C -55° C to 125° C DC CHARACTERISTICS (Ta = 0° C~70° C, VCC = 3.3V±10%) Item Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Input Leakage Current Output Leakage Current Operating Current Address Input Current Symbol VOH VOL VIH VIL ILI ILO ICC1 ICC2 MIN. 2.0V 2.0V -0.5V -10uA -10uA - MAX. 0.4V VCC+0.5V 0.8V 10uA 10uA 25mA 2mA Standby Current (CMOS) ISTB - 20uA Input Capacitance Output Capacitance CIN COUT - 12pF 12pF Conditions IOH = -0.4mA IOL = 2mA VIN = 0V to 3.6V VOUT = 0V to 3.6V Cycle = 200ns, VIN = VIH or VIL, active mode Cycle = 100ns, VIN = VIH or VIL, address input mode Cycle = 200ns, VIN = VCC± ±0.3V or 0V± ±0.3V,stand-by mode Ta = 25° C, f = 5MHz, VIN = 0V Ta = 25° C, f = 5MHz, VOUT = 0V AC CHARACTERISTICS (Ta = 0° C~70° C, VCC = 3.3V±10%) Item ALEL Setup Time ALE Delay Time Address Setup Time Address Hold Time Read Latency Time Read Cycle Time CE Setup Time CE Hold Time RD Access Time RD High Time Output Hold Time Output Float Time Release Time Symbol tALES tALED tAS tAH tL tCYC tCES tCEH tRD tRDH tOH tDF tR MIN. 70ns 70ns 30ns 0 950ns 200ns 50ns 0ns MAX. Conditions 150ns 50ns 0 40ns 0 P/N:PM0652 REV. 1.5, MAR. 11, 2003 3 MX23L6412 TIMING DIAGRAM Address Input Mode and Active Mode Address Input Mode Active Mode ALEH tALES tALED tL ALEL tCYC tCES CE tCEH tR tRDH RD tAS tAH AD[0:15] AH tOH tRD AL D0 D1 AH DN tDF Standby Mode Active Mode CE Latch Standby Mode (1) tALED ALEL tALES ALEH tCEH CE tCES Active Mode (2) CE Latch Standby Mode ALEL (Low) tALES ALEH CE P/N:PM0652 REV. 1.5, MAR. 11, 2003 4 MX23L6412 AC Test Conditions 2.4V 2.4V TEST POINTS INPUT 0.4V 0.4V 2.0V 2.0V TEST POINTS OUTPUT 0.8V 0.8V * Input Rise and Fall Times : <10ns * Output Load : 1TTL+100pF (without active current loading) P/N:PM0652 REV. 1.5, MAR. 11, 2003 5 MX23L6412 PACKAGE INFORMATION P/N:PM0652 REV. 1.5, MAR. 11, 2003 6 MX23L6412 REVISION HISTORY REVISION 1.1 1.2 1.3 1.4 1.5 DESCRIPTION To revise the CE setup time tCES as 50ns(min.) instead of 30ns Modify Access time--Read latency time:1000ns--->950 Add Package Information Change Standby Current:500uA(max.)--->20uA(max.) Add Standby Mode Timing Diagram To modify Package Information P/N:PM0652 PAGE P3 P1,3 P5 P1,3 P2,4 P6 DATE JUL/26/1999 OCT/13/2000 AUG/17/2001 FEB/20/2002 MAR/11/2003 REV. 1.5, MAR. 11, 2003 7 MX23L6412 MACRONIX INTERNATIONAL CO., LTD. Headquarters: TEL:+886-3-578-6688 FAX:+886-3-563-2888 Europe Office : TEL:+32-2-456-8020 FAX:+32-2-456-8021 Hong Kong Office : TEL:+86-755-834-335-79 FAX:+86-755-834-380-78 Japan Office : Kawasaki Office : TEL:+81-44-246-9100 FAX:+81-44-246-9105 Osaka Office : TEL:+81-6-4807-5460 FAX:+81-6-4807-5461 Singapore Office : TEL:+65-6346-5505 FAX:+65-6348-8096 Taipei Office : TEL:+886-2-2509-3300 FAX:+886-2-2509-2200 MACRONIX AMERICA, INC. TEL:+1-408-262-8887 FAX:+1-408-262-8810 http : //www.macronix.com MACRONIX INTERNATIONAL CO., LTD. reserves the right to change product and specifications without notice.