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
Doc ID 4997 Rev 12
1/34
www.st.com
1
Contents
M93C46, M93C56, M93C66, M93C76, M93C86
Contents
1
2
3
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connecting to the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1
Supply voltage (V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1
3.1.2
3.1.3
3.1.4
Operating supply voltage (V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power-up and device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
5
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
6
7
8
9
10
11
12
13
14
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
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
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
4/34
Doc ID 4997 Rev 12
M93C46, M93C56, M93C66, M93C76, M93C86
Description
1
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
64
Figure 1.
Logic diagram
VCC
D
C
M93Cx6
S
ORG
Q
VSS
AI01928
Table 3.
Signal names
Function
Chip Select
Serial Data input
Serial Data output
Serial Clock
Organization Select
Supply voltage
Ground
Input
Input
Output
Input
Input
Direction
Signal name
S
D
Q
C
ORG
V
CC
V
SS
Doc ID 4997 Rev 12
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