Cmos 64-word X 8-bit Static Ram Corporation

The CDP1826C is a general purpose, fully static, 64-word x 8-bit random-access memory, for use in CDP1800-series or other Microprocessor systems where minimum component count and/or price performance and simplicity in use are desirable. The CDP1826C has 8 common data input and data-output terminals with three-state capability for direct connection to a standard bidirectional data bus. Two chip-select inputs - CS1 and CS2 - are provided to simplify memory-system expan- sion. An additional select pin, CS/A5, is provided to enable the CDP1826C to be selected directly from the CDP1800 multiplexed address bus without additional latching or decoding. In an 1800 system, the CS/A5 pin CAN be tied to any MA address line from the CDP1800 processor. A TPA input is provided to latch the high-order bit of this address line as a chip-select for the CDP1826C. If this CS/A5 input is latched high, and if CS = 1 and CS2 = 0 at the appropriate time in the memory cycle, the CDP1826C will be enabled for writing or reading. In a non-1800 system, the TPA pin CAN be tied high, and the CS/A5 pin CAN be used as a normal address input. By Intersil Corporation