器件名称:
ST1200-B5
功能描述:
Memory Card IC 256 bit OTP EPROM with Lock-Out
文件大小:
24.51KB 共2页
简 介:
ST1200 Memory Card IC 256 bit OTP EPROM with Lock-Out DATA BRIEFING s s 256 x 1 bit Organisation 96 bits Protected in Write Mode By Lock-Out Fuse 5 V Power Supply (VCC) and 21 V Programming Voltage (VPP) 85 mW in Read Mode Power On Reset 1 1 1 1 s s s s s Very High Reliability Level Standard Delivery: Wafer Form and Micromodule Package Micromodule (D10) DESCRIPTION The ST1200 is a 256 bit OTP (one time programmable) EPROM, organized as 256 x 1, manufactured using ST’s highly reliable and well proven NMOS technology. The security mechanism, called Lock-Out, allows the user to inhibit, in write mode, the access to a memory section of 96 bits. Thus, by blowing a polysilicon fuse, the address bits 0 to 95 can be protected against write. The 9th bit of the ST1200 is set to a logical “1” for device identification purposes. In order to avoid any modification, ST has mask-programmed this bit to the logic “1” state. Wafer Figure 1. Logic Diagram VCC VPP Table 1. Signal Names A B FUS OUT Function code Function code Fuse control Data Output Strobe input - validates function codes - in programming mode used as a programming pulse Programming voltage (must be preset before programming and held after) Power Ground ST A B ST1200 OUT ST FUS VPP VCC GND GND DS120005 October 1999 Complete data available under NDA. 1/2 ST1200 The ST1200 is available in wafer form (either sawn or unsawn) and in micromodule form (on film). For deliveries in wafer form, the memory content is at l……
