M93S66-MN6T STMicroelectronics, M93S66-MN6T Datasheet - Page 10

• Manufacturer Part Number: M93S66-MN6T
• Manufacturer: STMicroelectronics

Specifications of M93S66-MN6T

• Density: 4Kb
• Interface Type: Serial (Microwire)
• Organization: 256x16
• Frequency (max): 2MHz
• Write Protection: Yes
• Data Retention: 40Year
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC N
• Operating Temp Range: -40C to 85C
• Supply Current: 2mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / Rohs Status: Not Compliant

M93S66, M93S56, M93S46
Figure 5. PAWRITE and WRAL Sequence
Note: For the meanings of An, Xn and Dn, please see
Page Write
A Page Write to Memory (PAWRITE) instruction
contains the first address to be written, followed by
up to 4 data words.
After the receipt of each data word, bits A1-A0 of
the internal address register are incremented, the
high order bits remaining unchanged (A7-A2 for
M93S66, M93S56; A5-A2 for M93S46). Users
must take care, in the software, to ensure that the
last word address has the same upper order ad-
dress bits as the initial address transmitted to
avoid address roll-over.
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PAGE
WRITE
WRITE
ALL
PRE
W
S
Q
PRE
W
S
Q
D
D
1 1
1 0
CODE
CODE
OP
OP
1
0
0 1
An
ADDR
ADDR
Xn X0
Table 2.
A0
Dn
Dn
and
Table
DATA IN
DATA IN
The Page Write to Memory (PAWRITE) instruction
will not be executed if any of the 4 words address-
es the protected area.
Write Enable (W) must be held High before and
during the instruction. Input address and data, on
Serial Data Input (D) are sampled on the rising
edge of Serial Clock (C).
After the last data bit has been sampled, the Chip
Select Input (S) must be taken Low before the next
rising edge of Serial Clock (C). If Chip Select Input
(S) is brought Low before or after this specific time
frame, the self-timed programming cycle will not
3..
D0
D0
BUSY
BUSY
STATUS
STATUS
CHECK
CHECK
READY
READY
AI00890C