QP7C245A October 12, 2007 2K x 8 Reprogrammable Registered PROM Features 5V 10% VCC, commercial, industrial and military Direct replacement for Cypress PROMs Windowed Packages available for reprogrammability EPROM technology 100% programmable OTP (One-Time-Programmable) Packages available TTL-compatible I/O Programmable asynchronous register (INITbar) On-chip edge-triggered registers Programmable synchronous or asynchronous output CMOS for optimum speed/power enable High speed Low power - 15 ns address set-up - 660 mW (industrial & military) - 10 ns clock to output - 330 mW (commercial 25ns) Slim, 300-mil, 24 pin hermetic DIP available Direct replacement for bipolar PROMs General Description The QP7C245A is a high-performance, 2K x 8, electrically programmable, read-only memory packaged in a variety of packages. The ceramic packages may be equipped with an erasure window when exposed to UV light the PROM is erased and can then be reprogrammed. The memory cells utilize proven EPROM floating-gate technology and byte-wide intelligent programming algorithms. The QP7C245A replaces Cypress and bipolar devices. When replacing bipolar devices, it offers the advantages of lower power, reprogrammability, superior performance and high programming yield. The EPROM cell requires only 12.5V for the supervoltage, and low current requirements allow gang programming. The EPROM cells allow each memory location to be tested 100%, because each location is written into, erased, and exercised prior to assembly. Each PROM is also tested for AC performance to guarantee that after customer programming the product will meet AC specification limits. The QP7C245A has an asynchronous initialize function (INIT). This function acts as a 2049th 8-bit word loaded into the on-chip register. It is user programmable with any desired word, or may be used as a PRESET or CLEAR function on the outputs. A low level, not an edge, triggers INIT. The devices are available in windowed packages (Erasable when exposed to UV light) and are also available in non-windowed OTP (One-Time-Programmable) hermetic and plastic packages. QP Semiconductor products, unless manufactured and marked by QP Semiconductor as Class S or Class V products, are not authorized for use in any space applications. The inclusion of non Class S or Class V QP Semiconductor products in space applications implies that the space application manufacturer assumes all risks of such use and in doing so indemnifies QP Semiconductor against all liability. 2945 Oakmead Village Ct, Santa Clara, CA 95051 Phone: (408) 737-0992 Fax: (408) 7368708 Internet: www.qpsemi.com QP7C245A Connection Diagrams CerDIP/PDIP/Cerpack 24 Lead LLCC/LCC/PLCC QP7C245A Hermetic Packages available in both Erasable (Windowed) and OTP One-Time-Programmable (Non- Windowed) versions. Molded Plastic Packages (PDIP/PLCC) are only available as OTP (Non-Windowed). Block Diagram QP7C245A QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 2 of 11