M93S56 データシートの表示（PDF） - STMicroelectronics
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コンポーネント説明
メーカー
M93S56
STMicroelectronics
M93S56 Datasheet PDF : 34 Pages
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M93S66, M93S56, M93S46
Table 2. Instruction Set for the M93S46
Instruction
Description
W
PRE
Start
bit
Op-
Code
READ
Read Data
from Memory
X
0
1
10
WRITE
Write Data to
Memory
1
0
1
01
PAWRITE
Page Write to
Memory
1
0
1
11
WRAL
WEN
WDS
Write All
Memory
with same
Data
10
1
00
Write Enable 1 0
1
00
Write Disable X 0
1
00
PRREAD
Protection
Register Read
X
1
1
10
PRWRITE
Protection
Register Write
1
1
1
01
PRCLEAR
Protection
Register Clear
1
1
1
11
PREN
Protection
Register
Enable
PRDS
Protection
Register
Disable
Note: 1. X = Don’t Care bit.
11
1
00
11
1
00
Address1
A5-A0
A5-A0
A5-A0
01 XXXX
11 XXXX
00 XXXX
XXXXXX
A5-A0
111111
11XXXX
000000
Data
Required
Clock
Cycles
Additional
Comments
Q15-Q0
Write is executed if
D15-D0
25
the address is not
inside the Protected
area
Nx
D15-D0
9 + N x 16
Write is executed if
all the N addresses
are not inside the
Protected area
Write all data if the
D15-D0
25
Protection Register
is cleared
Q5-Q0
+ Flag
9
9
Data Output =
Protection Register
content + Protection
Flag bit
Data above specified
9
address A5-A0 are
protected
Protect Flag is also
9
cleared (cleared
Flag = 1)
9
9
OTP bit is set
permanently
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