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M93C86, M93C76, M93C66

M93C56, M93C46

16 Kbit, 8 Kbit, 4 Kbit, 2 Kbit and 1 Kbit (8-bit or 16-bit wide)

MICROWIRE® serial access EEPROM

Features

■

Industry standard MICROWIRE bus

Single supply voltage:

– 4.5 V to 5.5 V for M93Cx6

– 2.5 V to 5.5 V for M93Cx6-W

– 1.8 V to 5.5 V for M93Cx6-R

Dual organization: by word (x16) or byte (x8)

Programming instructions that work on: byte,

word or entire memory

Self-timed programming cycle with auto-erase:

5 ms

READY/BUSY signal during programming

2 MHz clock rate

Sequential read operation

Enhanced ESD/latch-up behavior

More than 1 million write cycles

More than 40 year data retention

Packages

– SO8, TSSOP8, UFDFPN8 packages:

RoHS-compliant and Halogen-free

(ECOPACK2®)

– PDIP8 package:

RoHS-compliant (ECOPACK1®)

TSSOP8 (DW)

169 mil width

SO8 (MN)

150 mil width

PDIP8 (BN)

■

UFDFPN8 (MB or MC)

2 x 3 mm (MLP)

Table 1.

Part

number

M93C46

Device summary

Memory

size

1 Kbit

Supply

voltage

Part

number

Memory

size

Supply

voltage

Part

number

Memory

size

16 Kbits

2.5 V to 5.5 V M93C66-W

4.5 V to 5.5 V M93C66-R

2 Kbits

2.5 V to 5.5 V M93C76-W

8 Kbits

1.8 V to 5.5 V M93C76-R

4 Kbits

2.5 V to 5.5 V M93C86-W

1.8 V to 5.5 V

2.5 V to 5.5 V

1.8 V to 5.5 V

2.5 V to 5.5 V

Supply

voltage

4.5 V to 5.5 V

4.5 V to 5.5 V M93C66

4.5 V to 5.5 V M93C86

M93C46-W

M93C56

M93C56-W

M93C56-R

October 2011

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Contents

M93C46, M93C56, M93C66, M93C76, M93C86

Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connecting to the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1

Supply voltage (V

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1.1

3.1.2

3.1.3

3.1.4

Operating supply voltage (V

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power-up and device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.1

5.2

5.3

5.4

5.5

5.6

Read Data from Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Write Enable and Write Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Erase Byte or Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Erase All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Write All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

READY/BUSY status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Initial delivery state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Common I/O operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Clock pulse counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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M93C46, M93C56, M93C66, M93C76, M93C86

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Table 19.

Table 20.

Table 21.

Table 22.

Table 23.

Table 24.

Table 25.

Table 26.

Table 27.

Table 28.

Table 29.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Memory size versus organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Instruction set for the M93Cx6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Instruction set for the M93C46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Instruction set for the M93C56 and M93C66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Instruction set for the M93C76 and M93C86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operating conditions (M93Cx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Operating conditions (M93Cx6-W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Operating conditions (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

AC measurement conditions (M93Cx6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

AC measurement conditions (M93Cx6-W and M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . 20

Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DC characteristics (M93Cx6, device grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DC characteristics (M93Cx6, device grade 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DC characteristics (M93Cx6-W, device grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DC characteristics (M93Cx6-W, device grade 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

DC characteristics (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

AC characteristics (M93Cx6, device grade 6 or 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

AC characteristics (M93Cx6-W, device grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

AC characteristics (M93Cx6-W, device grade 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

AC characteristics (M93Cx6-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package

mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SO8 narrow – 8 lead plastic small outline, 150 mils body width, package data . . . . . . . . . 28

UFDFPN8 (MLP8) 8-lead ultra thin fine pitch dual flat package no lead

2 x 3 mm, data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

TSSOP8 – 8 lead thin shrink small outline, package mechanical data. . . . . . . . . . . . . . . . 30

Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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List of figures

M93C46, M93C56, M93C66, M93C76, M93C86

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIP, SO, TSSOP and MLP connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Bus master and memory devices on the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

READ, WRITE, WEN, WDS sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ERASE, ERAL sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

WRAL sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Write sequence with one clock glitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

AC testing input output waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Synchronous timing (start and op-code input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Synchronous timing (Read or Write). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

PDIP8 – 8 lead plastic dual in-line package, 300 mils body width, package

outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SO8 narrow – 8 lead plastic small outline, 150 mils body width, package outline . . . . . . . 28

UFDFPN8 (MLP8) 8-lead ultra thin fine pitch dual flat package no lead

2 x 3 mm, outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

TSSOP8 – 8 lead thin shrink small outline, package outline . . . . . . . . . . . . . . . . . . . . . . . 30

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M93C46, M93C56, M93C66, M93C76, M93C86

Description

The M93C46 (1 Kbit), M93C56 (2 Kbit), M93C66 (4 Kbit), M93C76 (8 Kbit) and M93C86 (16

Kbit) are electrically erasable programmable memory (EEPROM) devices accessed through

the MICROWIRE bus protocol.

M93Cx6 devices operate within a voltage supply range from 4.5 V to 5.5 V, M93Cx6-W

devices operate within a voltage supply range from 2.5 V to 5.5 V and M93Cx6-R devices

operate within a voltage supply range from 1.8 V to 5.5 V.

The memory array can be configured either in bytes (x8b ) or words (x16b).

Table 2.

Device

M93C86

M93C76

M93C66

M93C56

M93C46

Memory size versus organization

Number of bits

16384

8192

4096

2048

1024

Number of 8-bit bytes

2048

1024

512

256

128

Number of 16-bit words

1024

512

256

128

Figure 1.

Logic diagram

VCC

M93Cx6

ORG

VSS

AI01928

Table 3.

Signal names

Function

Chip Select

Serial Data input

Serial Data output

Serial Clock

Organization Select

Supply voltage

Ground

Input

Output

Input

Direction

Signal name

ORG

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