X88064 Datasheet: E2 Micro-Peripheral





X88064 E2 Micro-Peripheral Datasheet

Part Number X88064
Description E2 Micro-Peripheral
Manufacture Xicor
Total Page 15 Pages
PDF Download Download X88064 Datasheet PDF

Features: APPLICATION NOTE A V A I L A B L E Appl ication Brief iAPX88/188, MCS 196, MCS 51 Compatible* 64K X88064 E2 Microcont roller Peripheral 8192 x 8 Bit • Bl ock Lock Write Control —Eight 1K Byte Blocks - Lockable Independently or in Combination • Multiplexed Address/Dat a Bus —Direct Interface to Popular Mi crocontrollers • High Performance CMO S —Fast Access Times, 60ns and 80 ns —Low Power - 30mA Active Maximum - 15 0µ A Standby Maximum • Software Data Protection • Toggle Bit Polling —E arly End of Write Detection • Page Mo de Write —Allows up to 32 Bytes to be Written in One Write Cycle DESCRIPTIO N The X88064 is a high speed byte wide microperipheral device with eight 1K by te blocks of E2PROM and can be directly connected to industry standard high pe rformance microprocessors. This periphe ral provides two levels of memory write control, the standard Software Data Pr ogram (SDP) control and Block Lock. Blo ck Lock provides a higher level of memory write control above SDP. This allows the softw.

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APPLICATION NOTE
A V A I LABLE
Application Brief
iAPX88/188, MCS 196, MCS51 Compatible*
64K
X88064
8192 x 8 Bit
E2 Microcontroller Peripheral
• Block Lock Write Control
—Eight 1K Byte Blocks
- Lockable Independently or in Combination
• Multiplexed Address/Data Bus
—Direct Interface to Popular Microcontrollers
• High Performance CMOS
—Fast Access Times, 60ns and 80 ns
—Low Power
- 30mA Active Maximum
- 150µA Standby Maximum
• Software Data Protection
• Toggle Bit Polling
—Early End of Write Detection
• Page Mode Write
—Allows up to 32 Bytes to be Written in
One Write Cycle
DESCRIPTION
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 Pro-
gram (SDP) control and Block Lock.
Block Lock provides a higher level of memory write con-
trol above SDP. This allows the software developer to
partition any or all of the eight 1K byte blocks as In-Circuit
Programmable ROM (ICPROM). 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 con-
trol of the memory contents.
ALE
A/D0–A/D7
A8–A12
L
A
T
C
H
WR
RD
PSEN
CE
WC
INTERFACE
CONTROL
BLOCK LOCK
CONTROL
LOGIC
D
E
C
O
D
E
R
INDIVIDUALLY LOCKABLE
E2 PROM
ARRAY
1Kx8 BLOCKS
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

                    
                    






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