X88064 Datasheet PDF

Xicor X88064

The X88064 is a high speed byte wide microperipheral device with eight 1K byte blocks of E2PROM and can be directly connected to industry standard high performance microprocessors. This peripheral provides two levels of memory write control, the standard Software Data Program (SDP) control and Block Lock. This allows the software developer to partition any or all of the eight 1K byte blocks as In-Circuit Programmable ROM (ICPROM).

Part No.	X88064
Datasheet	X88064 Download
Manufacturer	Xicor
Description	E2 Micro-Peripheral
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DESCRIPTION

Block Lock provides a higher level of memory write control above SDP. Once locked, a block of memory must ﬁrst be unlocked before being written. Not even a write operation using the SDP sequence will change the contents of a locked block. Since a distinct, 6 byte, software command sequence locks and unlocks the memory, the software developer has complete control of the memory contents. BLOCK LOCK CONTROL LOGIC INDIVIDUALLY LOCKABLE A/D0–A/D7 L A T C H D E C O D E R E2 PROM ARRAY A8–A12 ALE 1Kx8 BLOCKS WR RD PSEN CE WC INTERFACE CONTROL SOFTWARE DATA PROTECT (SDP) WE OE BUS TRANSCEIVER POWER-ON RESET AND VCC SENSE A/D0–A/D7 ©Xicor, Inc. 1994, 1995, 1996 Patents Pending * All other brand and product names may be trademarks or registered trademarks of their respective companies. 7023-2.3 1/29/97 T0/C2/D0 SH 1 Characteristics subject to change without notice X88064 Software Data Program Control provides a lower level of memory write management. SDP controls write operations to the entire memory.