HN58V256A中文資料日立數(shù)據(jù)手冊PDF規(guī)格書

Description

The Hitachi HN58V256A and HN58V257A are electrically erasable and programmable ROMs organized as 32768-word × 8-bit. They have realized high speed, low power consumption and high reliability by employing advanced MNOS memory technology and CMOS process and circuitry technology. They also have a 64-byte page programming function to make their write operations faster.

Features

? Single 3 V supply: 2.7 to 5.5 V

? Access time: 120 ns max

? Power dissipation:

?- Active: 20 mW/MHz, (typ)

?- Standby: 110 μW (max)

? On-chip latches: address, data, CE, OE, WE

? Automatic byte write: 10 ms max

? Automatic page write (64 bytes): 10 ms max

? Ready/Busy (only the HN58V257A series)

? Data polling and Toggle bit

? Data protection circuit on power on/off

? Conforms to JEDEC byte-wide standard

? Reliable CMOS with MNOS cell technology

? 105 erase/write cycles (in page mode)

? 10 years data retention

? Software data protection

? Write protection by RES pin (only the HN58V257A series)

? Industrial versions (Temperature range: – 20 to 85?C and – 40 to 85?C) are also available.