

Programming Algorithms:

  ALGO.    VCC     VPP        TRY-pulse(ms) TRY-times(x) OVERPGM-pulse
--------- ----- ----------    ------------- ------------ -------------
 NORMAL   5V    selectable    50            1            0x
 INTL     6.12V selectable    1             50           3x
 QUICK    6.12V 12.9V overide 0.1           50           0x
 NSCMOS   6.12V 12.9V overide 10            1            0x
 USER     6.12V selectable    0.5           by user      by user
 ATMEL    Vcc 5V override     0.1           50           0x
--------- ----- -----------   ------------- ------------ -------------
INTL   : meet Intelligent algo spec.
QUICK  : meet INTEL quick pulse spec.
NSCMOS : meet NS CMOS normal program spec.
NSFAST : same as NSCMOS but 2 ms TRY pulse.
         The NS CMOS type EPROM (NMC27C series) has to be programmed by
         NSCMOS or NSFAST speed.
         NMC27CP128 has special method :
         1. select type 27256 12.5V
         2. change target zone to let buffer start = 0000
                                      buffer end   = 3FFF
                                      device start = 4000
         3. select program speed to NSCMOS or NSFAST
         4. then you can read,program NMC27CP128.

--------------------------------------------------------------------

Make    Part     Vpp     Vcc   Algorithm           size    pkg
----------------------------------------------------------------
AMD     2716     25V     5V    One-pulse 50ms       2Kx8
        2716B    12.5V   5V    One-pulse  5ms       2Kx8
        2732     25V     5V    One-pulse 50ms       4Kx8
        2732A    21V     5V    One-pulse 50ms       4Kx8
        2732B    12.5V   5V    One-pulse  5ms       4Kx8
        2764     21V     6V    Intelligent 1ms      8Kx8
        27C64    12.5V   6V    Intelligent 1ms      8Kx8
        27128    21V     6V    Intelligent 1ms     16Kx8
        27C128   12.5V   6V    Intelligent 1ms     16Kx8
        27256    12.5    6V    Intelligent 1ms     32Kx8
        27C256   12.5    6V    Intelligent 1ms     32Kx8
        27512    12.5    6V    Intelligent 1ms     64Kx8
        27C512   12.5V   6V    Intelligent 1ms     64Kx8
        27C513   12.5V   6V    Intelligent 1ms     4x16Kx8 
        2817A    5V      5V    One-pulse 10ms      2Kx8    28P
        2864A    5V      5V    One-pulse 10ms      8Kx8
        2864B    5V      5V    One-pulse 10ms      8Kx8
        28C256   5V      5V    One-pulse 10ms      32Kx8

Exel    2804A    5V      5V    One-pulse  5ms       1Kx8
        2816A    5V      5V    One-pulse  5ms       2Kx8
        2817A    5V      5V    One-pulse  5ms       2Kx8   28P
        2864A    5V      5V    One-pulse  5ms       8Kx8
        2865A    5V      5V    One-pulse  5ms       8Kx8

Fujitsu 2716     25V     5V    One-pulse 50ms       2Kx8
        2732     25V     5V    One-pulse 50ms       4Kx8
        2732A    21V     5V    One-pulse 50ms       4Kx8
        27C32A   21V     5V    One-pulse 50ms       4Kx8
        2764     21V     6V    Intelligent 1ms      8Kx8
        27C64    21V     6V    Intelligent 1ms      8Kx8
        27128    21V     6V    Intelligent 1ms     16Kx8
        27C128   21V     6V    Intelligent 1ms     16Kx8
        27256    12.5V   6V    Intelligent 1ms     32Kx8
        27C256   21V     6V    Intelligent 1ms     32Kx8
        27C256A  12.5V   6V    Intelligent 1ms     32Kx8
        27C512   12.75V  6.25V Quick-Pulse 0.1ms   64Kx8
        28C64    5V      5V    One-pulse 10ms       8Kx8
        28C65    5V      5V    One-pulse 10ms       8Kx8

Hitachi 462716   25V     5V    One-pulse 50ms       2Kx8
        462732   25V     5V    One-pulse 50ms       4Kx8
        482732A  21V     6V    Intelligent 1ms      4Kx8
        27C64    21V     6V    Intelligent 1ms      8Kx8
        482764   21V     6V    Intelligent 1ms      8Kx8
        27128A   12.5V   6V    Intelligent 1ms     16Kx8
        4827128  21V     6V    Intelligent 1ms     16Kx8
        27256    12.5V   6V    Intelligent 1ms     32Kx8
        27C256   12.5V   6V    Intelligent 1ms     32Kx8
        27512    12.75V  6.25V Quick-pulse 0.1ms   64Kx8

Intel   2716     25V     5V    One-pulse 50ms      2Kx8
        2732     25V     5V    One-pulse 50ms      4Kx8
        2732A    21V     5V    One-pulse 50ms      4Kx8
        2764     21V     6V    Intelligent 1ms     8Kx8
        2764A    12.5V   6V    Intelligent 1ms     8Kx8
        27C64    12.5V   6V    Intelligent 1ms     8Kx8
        P2764A   12.75V  6.25V Quick-pulse 0.1ms   8Kx8
        27128    21V     6V    Intelligent 1ms    16Kx8
        27128A   12.5V   6V    Intelligent 1ms    16Kx8
        27128B   12.5V   6V    Intelligent 1ms    16Kx8
        27C128   12.75V  6.25V Quick-pulse 0.1ms  16Kx8
        P27128A  12.75V  6.25V Quick-pulse 0.1ms  16Kx8
        27256    12.5V   6V    Intelligent 1ms    32Kx8
        27C256   12.75V  6.25V Quick-pulse 0.1ms  32Kx8
        P27256   12.75V  6.25V Quick-pulse 0.1ms  32Kx8
        27512    12.5V   6V    Intelligent 1ms    64Kx8
        P27512   12.75V  6.25V Quick-pulse 0.1ms  64Kx8
        27513    12.75V  6.25V Quick-pulse 0.1ms  4x16Kx8
        P27513   12.75V  6.25V Quick-pulse 0.1ms  4x16Kx8

Mitsubishi
        2716     25V     5V    One-pulse 50ms     2Kx8
        2732     25V     5V    One-pulse 50ms     4Kx8
        2732A    21V     5V    One-pulse 50ms     4Kx8
        2764     21V     6V    Intelligent 1ms    8Kx8
        27128    21V     6V    Intelligent 1ms   16Kx8
        27C128   21V     6V    Intelligent 1ms   16Kx8
        27256    12.5V   6V    Intelligent 1ms   32Kx8
        27C256   12.5V   6V    Intelligent 1ms   32Kx8
        27512    12.5V   6V    Intelligent 1ms   64Kx8
        28C64    5V      5V    One-pulse 10ms     8Kx8

NS      2716     25V     5V    One-pulse 50ms     2Kx8
        27C16    25V     5V    One-pulse 50ms     2Kx8
        2732     25V     5V    One-pulse 50ms     4Kx8
        27C32    25V     5V    One-pulse 50ms     4Kx8
        27C32H   25V     5V    One-pulse 10ms     4Kx8
        27C64    21V     6V    Interactive 0.5ms  8Kx8
        27C64B   12.75V  6.25V Quick-pulse 0.1ms  8Kx8
        27CP128  12.5V   6V    Interactive 0.5ms 16Kx8
        27C128B  12.75V  6.25V Quick-pulse 0.1ms 16Kx8
        27C256   12.5V   6V    Interactive 0.5ms 32Kx8
        27C256B  12.75V  6.25V Quick-pulse 0.1ms 32Kx8
        27C512   12.5V   6V    Interactive 0.5ms 64Kx8
        27C512A  12.75V  6.25V Quick-pulse 0.1ms 64Kx8

NEC     2716     25V     5V    One-pulse 50ms     2Kx8
        2732     25V     5V    One-pulse 50ms     4Kx8
        2732A    21V     5V    One-pulse 50ms     4Kx8
        2764     21V     6V    Intelligent 1ms    8Kx8
        27C64    21V     6V    Intelligent 1ms    8Kx8
        27128    21V     6V    Intelligent 1ms   16Kx8
        27256    21V     6V    Intelligent 1ms   32Kx8
        27C256   21V     6V    Intelligent 1ms   32Kx8
        27256A   12.5V   6V    Intelligent 1ms   32Kx8
        27C256A  12.5V   6V    Intelligent 1ms   32Kx8
        27512    12.75V  6.25V Quick-pulse 0.1ms 64Kx8
        27C512   12.75V  6.25V Quick-pulse 0.1ms 64Kx8
        28C64    5V      5V    One-pulse 10ms     8Kx8

OKI     2716     25V     5V    One-pulse 50ms     2Kx8
        2764     21V     6V    Intelligent 1ms    8Kx8
        2764A    12.75V  6.25V Quick-pulse 0.1ms  8Kx8
        27128    21V     6V    Intelligent 1ms   16Kx8
        27128A   12.75V  6.25V Quick-pulse 0.1ms 16Kx8
        27256    12.75V  6.25V Quick-pulse 0.1ms 32Kx8
        27C256   12.75V  6.25V Quick-pulse 0.1ms 32Kx8
        27512    12.75V  6.25V Quick-pulse 0.1ms 64Kx8

Ricoh   27C32    21V     5V    One-pulse 10ms     4Kx8
        27C64    21V     6V    Intelligent 1ms    8Kx8
        27C256   12.5V   6V    Intelligent 1ms   32Kx8

Rockwell
        2816A    5V      5V     One-pulse 10ms    2Kx8

SEEQ    2764     21V     6V     Intelligent 1ms   8Kx8
        27128    21V     6V     Intelligent 1ms  16Kx8
        27C256   12.5V   6V     Intelligent 1ms  32Kx8
        2804A    5V      5V     One-pulse 10ms    1Kx8
        2816A    5V      5V     One-pulse 10ms    2Kx8
        2816AH   5V      5V     One-pulse  5ms    2Kx8
        2817A    5V      5V     One-pulse 10ms    2Kx8   28P
        2864     5V      5V     One-pulse 10ms    8Kx8
        2864H    5V      5V     One-pulse  5ms    8Kx8
        28C64    5V      5V     One-pulse 10ms    8Kx8
        28C65    5V      5V     One-pulse 10ms    8Kx8
        28C256   5V      5V     One-pulse 10ms   32Kx8

SGS-Thomson (ST)
         2716    25V     5V     One-oulse 50ms     2Kx8
         2732A   21V     5V     One-pulse 50ms     4Kx8
         2764    21V     5V     One-pulse 50ms     8Kx8
         2764A   12.5V   6V     Intelligent 1ms    8Kx8
         27128A  12.5V   6V     Intelligent 1ms   16Kx8
         27256   12.5V   6V     Intelligent 1ms   32Kx8
         27512   12.75V  6.25V  Quick-pulse 0.1ms 64Kx8

Signetics
         27C64   21V     5V     One-pulse 50ms     8Kx8
         27C64A  12.75V  6.25V  Quick-pulse 0.1ms  8Kx8
         27C256  12.75V  6.25V  Quick-pulse 0.1ms 32Kx8
         27C512  12.75V  6.25V  Quick-pulse 0.1ms 64Kx8

TI       2732A   21V     5V     One-pulse 50ms     4Kx8
         27C32   12.5V   6V     Intelligent 1ms    4Kx8
         27PC32  12.5V   6V     Intelligent 1ms    4Kx8
         2764    21V     6V     Intelligent 1ms    8Kx8
         27C64   12.5V   6V     Intelligent 1ms    8Kx8
         27PC64  12.5V   6V     Intelligent 1ms    8Kx8
         27128   21V     6V     Intelligent 1ms   16Kx8
         27128A  12.5V   6V     Intelligent 1ms   16Kx8
         27C128  12.5V   6V     Intelligent 1ms   16Kx8
         27PC128 12.5V   6V     Intelligent 1ms   16Kx8
         27C256  12.5V   6V     Intelligent 1ms   32Kx8
         27PC256 12.5V   6V     Intelligent 1ms   32Kx8
         27C512  12.75V  6.25V  Quick-pulse 0.1ms 64Kx8
         27PC512 12.75V  6.25V  Quick-pulse 0.1ms 64Kx8

Toshiba  2732    25V     5V     One-pulse 50ms     4Kx8
         2732A   21V     5V     One-pulse 50ms     4Kx8
         2764    21V     6V     Intelligent 1ms    8Kx8
         2764A   12.75V  6.25V  Quick-pulse 0.1ms  8Kx8
         2464A   12.75V  6.25V  Quick-pulse 0.1ms  8Kx8
         27128   21V     6V     Intelligent 1ms   16Kx8
         27128A  12.75V  6.25V  Quick-pulse 0.1ms 16Kx8
         24128A  12.75V  6.25V  Quick-pulse 0.1ms 16Kx8
         27256   21V     6V     Intelligent 1ms   32Kx8
         27256A  12.75V  6.25V  Quick-pulse 0.1ms 32Kx8
         24256A  12.75V  6.25V  Quick-pulse 0.1ms 32Kx8
         54256A  12.75V  6.25V  Quick-pulse 0.1ms 32Kx8
         57256A  12.75V  6.25V  Quick-pulse 0.1ms 32Kx8
         27512   12.75V  6.25V  Quick-pulse 0.1ms 64Kx8
         24512   12.75V  6.25V  Quick-pulse 0.1ms 64Kx8

UMC      2732    25V     5V     One-pulse 50ms     4Kx8
         2764    21V     6V     Intelligent 1ms    8Kx8

VLSI     27C64   12.5V   6V     Interactive 0.5ms  8Kx8
         27C128  12.5V   6V     Interactive 0.5ms 16Kx8
         27C256  12.5V   6V     Interactive 0.5ms 32Kx8
         27C512  12.5V   6V     Interactive 0.5ms 64Kx8
         28H64   5V      5V     One-pulse  5ms     8Kx8

Xicor    2804A   5V      5V     One-pulse 10ms     1Kx8
         2816A   5V      5V     One-pulse 10ms     2Kx8
         2816B   5V      5V     One-pulse 10ms     2Kx8
         2864A   5V      5V     One-pulse 10ms     8Kx8
         2864B   5V      5V     One-pulse 10ms     8Kx8
         2864H   5V      5V     One-pulse  5ms     8Kx8
         28256   5V      5V     One-pulse 10ms    32Kx8
         28C256  5V      5V     One-pulse 10ms    32Kx8

END

