Description
M93C86, M93C76, M93C66, M93C56, M93C46
1
Description
The M93C86, M93C76, M93C66, M93C56 and M93C56 are electrically erasable
programmable memory (EEPROM) devices. They are accessed through a Serial Data input
(D) and Serial Data output (Q) using the MICROWIRE bus protocol.
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. ECOPACK® packages are lead-free and RoHS compliant. ECOPACK is an ST
trademark. ECOPACK specifications are available at: www.st.com.
Figure 1.
Logic diagram
V
CC
D
Q
C
S
M93Cx6
ORG
V
SS
AI01928
Table 2.
Signal names
Signal name
Function
Direction
S
Chip Select
Input
Input
Output
Input
Input
D
Serial Data input
Q
Serial Data output
Serial Clock
C
ORG
VCC
VSS
Organisation Select
Supply voltage
Ground
The memory array organization may be divided into either bytes (x8) or words (x16) which
may be selected by a signal applied on Organization Select (ORG). The bit, byte and word
sizes of the memories are as shown in Table 3.
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STMICROELECTRONICS [ ST ]
