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X88C75 Datasheet, PDF (1/27 Pages) Xicor Inc. – Port Expander and E2 Memory
APPLICATION NOTES
AVA I L A B L E
X88C75ASN6L2 •ICAN®64E• A2N66
SLIC
X88C75 SLIC® E2 Microperipheral
Port Expander and E2 Memory
FEATURES
• Highly Integrated Microcontroller Peripheral
—8K x 8 E2 Memory
—2 x 8 General Purpose Bidirectional I/O Ports
—16 x 8 General Purpose Registers
—Integerated Interrupt Controller Module
—Internal Programmable Address Decoding
• Self Loading Integrated Code (SLIC)
—On-Chip BIOS and Boot Loader
—IBM/PC Based Interface Software(XSLIC)
• Concurrent Read During Write
—Dual Plane Architecture
• Isolates Read/Write Functions Between Planes
• Allows Continuous Execution Of Code From
One Plane While Writing In The Other Plane
• Multiplexed Address/Data Bus
—Direct Interface to Popular 80C51 Family of
Microcontrollers
• Software Data Protection
—Protect Entire Array During Power-up/-down
• Block Lock™ Data Protection
—Set Write Lockout in 1K Blocks
• Toggle Bit Polling
• High Performance CMOS
—Fast Access Time, 120ns
—Low Power
• 60mA Active
• 100µA Standby
• PDIP, PLCC, and TQFP Packaging Available
DESCRIPTION
The X88C75 SLIC is a highly integrated peripheral for
the 80C51 family of microcontrollers. The device inte-
grates 8K-bytes of 5V byte-alterable nonvolatile memory,
two bidirectional 8-bit ports, 16 general purpose regis-
ters, programmable internal address decoding and a
multiplexed address and data bus.
The 5V byte-alterable nonvolatile memory can be used
as program storage, data storage, or a combination of
both. The memory array is separated into two 4K-bytes
sections which allows read accesses to one section
while a write operation is taking place in the other
section. The nonvolatile memory also features Software
Data Protection to protect the contents during power
transitions, and an advanced Block Protect register
PIN CONFIGURATIONS
DIP
RESET
A12
WC
PSEN
STRA
A15
NC
A14
A13
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
NC
A/D0
A/D1
A/D2
A/D3
A/D4
VSS
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
X88C75
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
2887-2.5 4/11/97 T0/C0/D1 SH
VCC
WR
ALE
A8
A9
A11
NC
IRQ
STRB
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
NC
RD
A10
CE
A/D7
A/D6
A/D5
28288787ILILLLF0F101
PLCC
TQFP
INDEX
CORNER
A14
A13
PA7
PA6
PA5
PA44
PA3
33
PA2
PA1
PA0
A/D0
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
X88C75
35
12
SLIC
34
13
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
A11
IRQ
STRB
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
2887 ILL F02.4
Concurrent Read During Write, Block Lock, and
SLIC® E2 are registered trademarks of Xicor, Inc.
1
Characteristics subject to change without notice