XICOR X88C64SSLIC, X88C64SISLIC, X88C64PSLIC, X88C64PMSLIC, X88C64PISLIC Datasheet

X88C64 SLIC® E

2

1

© Xicor, Inc. 1993, 1995, 1996 Patents Pending Characteristics subject to change without notice
6540-1.5 7/9/96 T0/C1/D0 NS

E2 Micro-Peripheral

64K X88C64 SLIC

®

E

2

8192 x 8 Bit

80C51 Microcontroller Family Compatible

SLIC® E2 and CONCURRENT READ WRITE™ are trademarks of Xicor, Inc.

DESCRIPTION

The X88C64 SLIC E2 is a highly integrated E2 Micro­controller peripheral which combines the functional­ity of the X88C64 component with pre-loaded soft­ware routines allowing any embedded system using
it to upgrade and download software via the serial
port. This self-loading integrated code eliminates the
need to initially program the firmware into a memory
device at the time of initial manufacture. The SLIC
routines also greatly facilitate the loading of subse­quent versions of the firmware into the system.

The SLIC routines consist of approximately 500 bytes
of instructions for the 8051 which will initialize the
microcontroller and its on-board UART and download
the user’s software through the UART. The baud rate
for the transfer is 9600 based on a crystal frequency
of 11MHz. Data transfer is accomplished using a
proprietary format called XCOM. Xicor also has de­veloped a program for IBM PCs and compatibles
called XSLIC, which will translate an Intel HEX format
file into XCOM format and upload the program to an
X88C64 SLIC E2.

The X88C64 device itself is an 8K x 8 E2PROM
fabricated with advanced CMOS Textured Poly Float-

FEATURES
SLIC (SELF LOADING INTEGRATED CODE)

FIRMWARE

• Automatically Downloads User’s Software into

8051 Based Systems

• Features Load, Verify, and Block Protection

Capabilities

• Transfers Baud Rate 9600 at 11MHz

• CONCURRENT READ 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 8051 Family

• Block Protect Register

—Individually Set Write Lock Out in 1K Blocks

• Toggle Bit Polling

—Early End of Write Detection

• Page Mode Write

—Allows up to 32 Bytes to be Written in

One Write Cycle

APPLICATION NOTES AND DEVELOPMENT SYSTEM

AVAILABLE

AN62–64 • AN66 • AN68 • XK88

TYPICAL APPLICATION

7
8

9
10
11
13
14
15
21
20
17
19

2

5

6
22
18
23
16

A/D0
A/D1
A/D2
A/D3
A/D4
A/D5
A/D6
A/D7
A8
A9
A10
A11
A12
WC
PSEN
ALE
RD
WR
CE

V

CC

24

Target System

X88C64 SLIC

®

E

2

39
38
37
36
35
34
33
32
21
22
23
24
25

29
30
17
16

P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4

PSEN

ALE

RD

WR

P2.7

80C51 µC Family

EA/VP

X1

X2

P3.0
P3.1

31

19

18

RS232

DRIVERS

IBM PC

OR

COMPATIBLE

6540 ILL F01.1

X88C64 SLIC® E

2

2

ing Gate Technology. The X88C64 features a Multi­plexed Address and Data bus allowing direct inter­face to a variety of popular single-chip microcontrollers
operating in expanded multiplexed mode without the
need for additional interface circuitry.

The X88C64 is internally configured as two indepen­dent 4K x 8 memory arrays. This feature provides the
ability to perform nonvolatile memory updates in one
array and continue operation out of code stored in the
other array; effectively eliminating the need for an
auxiliary memory device for code storage.

To write to the X88C64 SLIC E2, a three-byte com­mand sequence must precede the byte(s) being writ­ten. This sequence called Software Data Protection

prevents the loss of data or program information due
to inadvertant write cycles during power-up or power­down. The X88C64 SLIC E2 also provides a second
generation software data protection scheme called
Block Protect.

Block Protect can provide write lockout of the entire
device or selected 1K blocks. There are eight 1K x 8
blocks that can be write protected individually in any
combination required by the user. Block Protect, in
additional to Write Control input, allows the different
segments of the memory to have varying degrees of
alterability in normal system operation.

For further information on the X88C64 hardware
interface, consult the X88C64 Data Sheet.

PIN NAMES

Symbol Description

ALE Address Latch Enable
A/D0–A/D

7

Address Inputs/Data I/O

A8–A

12

Address Inputs

RD Read Input
WR Write Input
PSEN Program Store Enable Input
CE Chip Enable
WC Write Control

V

SS

Ground

V

CC

Supply Voltage

6540 PGM T01

PIN CONFIGURATION

DIP/SOIC

6540 FHD F02

NC

A12

NC
NC

WC

PSEN

A/D0
A/D1
A/D2
A/D3
A/D4

V

SS

1
2
3
4
5
6
7
8
9
10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

V

CC

WR
ALE
A8
A9
A11
RD
A10
CE
A/D7
A/D6
A/D5

X88C64