m93s66-wmn3tp-s STMicroelectronics, m93s66-wmn3tp-s Datasheet - Page 6

• Manufacturer Part Number: m93s66-wmn3tp-s
• Description: 4kbit, 2kbit And 1kbit 16-bit Wide Microwire Serial Access Eeprom With Block Protection
• Manufacturer: STMicroelectronics

M93S66, M93S56, M93S46
Table 2. Instruction Set for the M93S46
Note: 1. X = Don’t Care bit.
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READ
WRITE
PAWRITE
WRAL
WEN
WDS
PRREAD
PRWRITE
PRCLEAR
PREN
PRDS
Instruction
Read Data
from Memory
Write Data to
Memory
Page Write to
Memory
Write All
Memory
with same
Data
Write Enable
Write Disable
Protection
Register Read
Protection
Register Write
Protection
Register Clear
Protection
Register
Enable
Protection
Register
Disable
Description
W
X
X
X
1
1
1
1
1
1
1
1
PRE
0
0
0
0
0
0
1
1
1
1
1
Start
bit
1
1
1
1
1
1
1
1
1
1
1
Code
Op-
10
01
11
00
00
00
10
01
11
00
00
Address
01 XXXX
11 XXXX
00 XXXX
XXXXXX
11XXXX
111111
000000
A5-A0
A5-A0
A5-A0
A5-A0
1
Q15-Q0
D15-D0
D15-D0
D15-D0
Q5-Q0
+ Flag
Data
N x
9 + N x 16
Required
Cycles
Clock
25
25
9
9
9
9
9
9
Write is executed if
the address is not
inside the Protected
area
Write is executed if
all the N addresses
are not inside the
Protected area
Write all data if the
Protection Register
is cleared
Data Output =
Protection Register
content + Protection
Flag bit
Data above specified
address A5-A0 are
protected
Protect Flag is also
cleared (cleared
Flag = 1)
OTP bit is set
permanently
Comments
Additional