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M9346-RDS3T bảng dữ liệu(PDF) 10 Page - STMicroelectronics

tên linh kiện M9346-RDS3T
Giải thích chi tiết về linh kiện  4Kbit, 2Kbit and 1Kbit 16-bit wide MICROWIRE Serial Access EEPROM with Block Protection
PDF  34 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M9346-RDS3T bảng dữ liệu(HTML) 10 Page - STMicroelectronics

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M93S66, M93S56, M93S46
10/34
Figure 5. PAWRITE and WRAL Sequence
Note: For the meanings of An, Xn and Dn, please see Table 2. and Table 3..
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.
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
AI00890C
S
PAGE
WRITE
1 1An
A0
DATA IN
D
Q
OP
CODE
Dn
D0
1
BUSY
READY
CHECK
STATUS
ADDR
PRE
W
S
WRITE
ALL
1 0Xn X0
DATA IN
D
Q
OP
CODE
Dn
D0
0
BUSY
READY
CHECK
STATUS
ADDR
PRE
W
01



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