M93C86-x M93C76-x M93C66-x
M93C56-x M93C46-x
16-Kbit, 8-Kbit, 4-Kbit, 2-Kbit and 1-Kbit
(8-bit or 16-bit wide) MICROWIRE serial access EEPROM
Datasheet - production data
READY/BUSY signal during programming
2 MHz clock rate
Sequential read operation
Enhanced ESD/latch-up behavior
More than 4 million write cycles
PDIP8 (BN)
More than 200-year data retention
Packages
SO8, TSSOP8, UFDFPN8 packages:
RoHS-compliant and Halogen-free
(ECOPACK)
PDIP8 package:
SO8 (MN)
RoHS-compliant (ECOPACK1)
150 mil width
Table 1. Device summary
Part Memory Supply
Reference
number size voltage
TSSOP8 (DW)
M93C46-W 2.5 V to 5.5 V
169 mil width
M93C46-x 1 Kbit
M93C46-R 1.8 V to 5.5 V
M93C56-W 2.5 V to 5.5 V
M93C56-x 2 Kbit
M93C56-R 1.8 V to 5.5 V
M93C66-W 2.5 V to 5.5 V
M93C66-x 4 Kbit
UFDFPN8 (MC)
M93C66-R 1.8 V to 5.5 V
2 x 3 mm
- M93C76-R 8 Kbit 1.8 V to 5.5 V
M93C86-W 2.5 V to 5.5 V
M93C86-x 16 Kbit
M93C86-R 1.8 V to 5.5 V
Features
Industry standard MICROWIRE bus
Single supply voltage:
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
November 2013 DocID4997 Rev 15 1/33
This is information on a product in full production. www.st.comContents M93C86-x M93C76-R M93C66-x M93C56-x M93C46-x
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Connecting to the serial bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Supply voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
CC
3.1.1 Operating supply voltage (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
CC
3.1.2 Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.3 Power-up and device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.4 Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Read Data from Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Erase and Write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2.1 Write Enable and Write Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2.2 Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2.3 Write All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2.4 Erase Byte or Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2.5 Erase All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6READY/BUSY status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Initial delivery state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 Clock pulse counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
12 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
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