HN27C256HP/HFP Series
32768-word × 8-bit CMOS One Time Electrically Programmable
ROM
Maintenance only
Description
The HN27C256HP/HFP is a 32768-word by 8-bit one time electrically programmable ROM. Initially, all bits
of the HN27C256HP/HFP are in the “1” State (Output High). Data is introduced by selectively programming
“0” into the desired bit locations. This device is packaged in a 28-pin plastic package (DIP, SOP). Therefore,
this device cannot be re-written.
Features
• High speed
Access time: 85/100 ns (max)
• Low power dissipation
Active mode: 30 mW (typ) (f = 1 MHz)
• High reliability and fast programming
Programming voltage: +12.5 V DC
Fast High-Reliability Programming Algorithm available
• Device identifier mode
Manufacturer code and device code
Ordering Information
Type No.
HN27C256HP-85
HN27C256HP-10
HN27C256HFP-85T
HN27C256HFP-10T
Access Time
85 ns
100 ns
85 ns
100 ns
Package
28-pin plastic DIP (DP-28)
28-pin plastic SOP (FP-28DA)
Note: This device is not available for new application.