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X88C75 SLIC
E
2
1
Port Expander and
E
2
Memory
FEATURES
Highly Integrated Microcontroller Peripheral
—8K x 8 E
2
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
100
μ
A 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
Xicor, Inc. 1994, 1995, 1996 Patents Pending
2887-2.5 4/11/97 T0/C0/D1 SH
Characteristics subject to change without notice
S L IC
2887 ILL F01
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
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
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
X88C75
PIN CONFIGURATIONS
DIP
X88C75 SLIC
E
2
Microperipheral
Concurrent Read During Write, Block Lock, and
SLIC
E
are registered trademarks of Xicor, Inc.
A
PPLICATION
N
OTES
A V A I L A B L E
INDEX
CORNER
2887 ILL F02.4
6 5 4 3 2 1 44 43 42 41 40
18 19 20
22 23 24 25 26 27 28
21
39
38
37
36
35
34
33
32
31
30
29
7
8
9
10
11
12
13
14
15
16
17
A1
S
P
W
A1
R
VC
W
A
A8
A9
A11
IRQ
STRB
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
A14
A13
PA7
PA6
PA5
PA4
PA3
33
PA2
PA1
PA0
A/D0
A1
A2
A3
A4
VS
A5
A6
A7
C
A1
R
X88C75
SLIC
PLCC
TQFP