M39832 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
M39832
STMicroelectronics
'M39832' PDF : 36 Pages View PDF
M39832
Table 5B. EEPROM Instructions (EE=0, EF=1)
Mne.
Instr. Cyc.
WOTP (2)
Write OTP
Row
ROTP (2)
Read OTP
Row
Return
RT from OTP
Read
Byte
Addr.
>3
Word
Data
Byte
Addr.
>3
Word
Data
Addr.
1
Data
1st
Cyc.
2nd
Cyc.
3rd
Cyc.
4th
Cyc.
5th
Cyc.
6th
Cyc.
7th
Cyc.
5555h 2AAAh
5555h 2AAAh
5555h
5555h
Addr 1
Addr 2
Addr 3
Addr 4
AAh
55h
B0h Byte 1 Byte 2 Byte 3 Byte 4
5555h 2AAAh 5555h Addr 1 Addr 2 Addr 3 Addr 4
5555h 2AAAh 5555h
AAh
55h
90h Byte 1 Byte 2 Byte 3 Byte 4
X (1)
F0h
Byte
SSDP (4) SDP Enable ≥3 Addr. Word
Data
5555h 2AAAh 5555h
5555h 2AAAh 5555h
AAh
55h
A0h
SSDP (5)
SDP
Disable
Byte
Addr.
6
Word
5555h 2AAAh 5555h 5555h 2AAAh 5555h
5555h 2AAAh 5555h 5555h 2AAAh 5555h
Data
AAh
55h
80h
AAh
55h
20h
Notes: 1. X = Don’t Care.
2. Once the WOTP has been initiated (first 3 Cycles), from 1 up to 64 bytes can be written in one single write cycle
(See Write OTP chapter in following pages).
3. Once the ROTP has been initiated (first 3 Cycles), from 1 up to 64 bytes of the OTP can be read (See Read OTP chapter
in following pages). The RT (Return) instruction MUST be sent to the device to exit ROTP mode.
4. Once SDP is set (SSDP instruction sent once), it is necessary to send SSDP prior to any byte or page to be written
in the EEPROM array (See Figure 4 and EEPROM array Software Data Protection chapter in following pages).
5. See Figure 5 and EEPROM array Software Data Protection chapter in following pages.
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