Datasheet

M93C46, M93C56, M93C66, M93C76, M93C86 Description
Doc ID 4997 Rev 12 5/34
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).
Figure 1. Logic diagram
Table 2. Memory size versus organization
Device Number of bits Number of 8-bit bytes Number of 16-bit words
M93C86 16384 2048 1024
M93C76 8192 1024 512
M93C66 4096 512 256
M93C56 2048 256 128
M93C46 1024 128 64
Table 3. Signal names
Signal name Function Direction
S Chip Select Input
D Serial Data input Input
Q Serial Data output Output
C Serial Clock Input
ORG Organization Select Input
V
CC
Supply voltage
V
SS
Ground
AI01928
D
V
CC
M93Cx6
V
SS
C
Q
S
ORG