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M37733EHL Datasheet(PDF) 11 Page - Mitsubishi Electric Semiconductor |
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M37733EHL Datasheet(HTML) 11 Page - Mitsubishi Electric Semiconductor |
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11 / 35 page  11 MITSUBISHI MICROCOMPUTERS M37733EHLXXXHP PROM VERSION OF M37733MHLXXXHP PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. FUNCTION IN EPROM MODE 1M mode (equivalent to the M5M27C101K) Reading __ __ To read the EPROM, set the CE and OE pins to a “L” level. Input the address of the data (A0 – A16) to be read, and the data will be output to the I/O pins D0 – D7. The data I/O pins will be floating when either __ __ the CE or OE pins are in the “H” state. Programming Programming must be performed in 8 bits by a byte program. To __ __ program to the EPROM, set the CE pin to a “L” level and the OE pin to a “H” level. The CPU will enter the programming mode when 12.5 V is applied to the VPP pin. The address to be programmed to is selected with pins A0 – A16, and the data to be programmed is input to pins D0 ___ – D7. Set the PGM pin to a “L” level to being programming. Programming operation To program the M37733EHLXXXHP, first set VCC = 6 V, VPP = 12.5 V, and set the address to 0100016. Apply a 0.2 ms programming pulse, check that the data can be read, and if it cannot be read OK, repeat the procedure, applying a 0.2 ms programming pulse and checking that the data can be read until it can be read OK. Record the accumulated number of pulse applied (X) before the data can be read OK, and then write the data again, applying a further once this number of pulses (0.2 ! X ms). When this series of programming operations is complete, increment the address, and continue to repeat the procedure above until the last address has been reached. Finally, when all addresses have been programmed, read with VCC = VPP = 5 V (or VCC = VPP = 5.5 V). Table 2. I/O signal in each mode Read-out Output Disable Programming Programming Verify Program Disable VIL VIL VIH VIL VIL VIH VIL VIH X VIH VIL VIH X X X VIL VIH VIH 5 V 5 V 5 V 12.5 V 12.5 V 12.5 V 5 V 5 V 5 V 6 V 6 V 6 V Output Floating Floating Input Output Floating __ CE __ OE ___ PGM VPP VCC Data I/O Mode Pin Note 1 : An X indicates either VIL or VIH. Programming operation (equivalent to the M5M27C101K) AC ELECTRICAL CHARACTERISTICS (Ta = 25 ± 5 °C, VCC = 6 V ± 0.25 V, VPP = 12.5 ± 0.3 V, unless otherwise noted) Address setup time __ OE setup time Data setup time Address hold time Data hold time Output enable to output float delay VCC setup time VPP setup time ___ PGM pulse width ___ PGM over program pulse width __ CE setup time __ Data valid from OE µs µs µs µs µs ns µs µs ms ms µs ns tAS tOES tDS tAH tDH tDFP tVCS tVPS tPW tOPW tCES tOE Min. 2 2 2 0 2 0 2 2 0.19 0.19 2 Typ. 0.2 Max. 130 0.21 5.25 150 Symbol Parameter Test conditions Limits Unit |
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