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PM0020 Datasheet(PDF) 28 Page - STMicroelectronics

Part # PM0020
Description  STR91xFA Flash programming manual
PDF  87 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0020 Datasheet(HTML) 28 Page - STMicroelectronics

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STR91xFA Flash memory
PM00020
28/87
1.13.2
Protection level 2 register (STR91xFAxx2 and STR91xFAxx4)
This register can be read using the RSIG command (see Section 1.11.2) or by JTAG. The
LOCK bit can be written via CUI or JTAG. Other bits can be written only via JTAG. The
factory default settings may be modified by the user via JTAG. The register is not cleared by
a device reset.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
LOCK
SECURI
TY
PL2B1S[3:0]
PL2B0S[7:0]
rw
rrr
rrrr
rrrr
rr
Bits 15:14
Reserved.
Bit 13
LOCK: OTP sector lock bit.
See also Section 1.12.8.
0: OTP sector not locked (default)
1: OTP sector locked
Bit 12
SECURITY: JTAG Access Security Bit.
0: JTAG access allowed (default)
1: JTAG access not allowed
Bits 11:8
PL2B1S[3:0]: Level 2 Protection Status on Bank 1 Sector x.
0: Sector x of Bank 1 is not Level 2 write protected (default)
1: Sector x of Bank 1 is Level 2 write protected
Bits 7:0
PL2B0S[7:0]: Level 2 Protection Status on Bank 0 Sector x.
0: Sector x of Bank 0 is not Level 2 write protected (default)
1: Sector x of Bank 0 is Level 2 write protected



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