C8051F996DK Silicon Laboratories Inc, C8051F996DK Datasheet - Page 159
![KIT DEV FOR C8051F996](/photos/28/41/284142/c8051f996dk_sml.jpg)
C8051F996DK
Manufacturer Part Number
C8051F996DK
Description
KIT DEV FOR C8051F996
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheets
1.C8051F996DK.pdf
(24 pages)
2.C8051F996DK.pdf
(2 pages)
3.C8051F996DK.pdf
(4 pages)
4.C8051F996DK.pdf
(322 pages)
Specifications of C8051F996DK
Contents
Board, Batteries, Cables, CDs, Debug Adapter, Documentation, Power Adapter
Processor To Be Evaluated
C8051F996
Processor Series
C8051F98x
Interface Type
USB
Operating Supply Voltage
3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F996
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1963
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SFR Definition 14.4. FLKEY: Flash Lock and Key
SFR Page = All; SFR Address = 0xB7
Name
Reset
Bit
7:0 FLKEY[7:0] Flash Lock and Key Register.
Type
Bit
Name
7
0
Write:
This register provides a lock and key function for Flash erasures and writes. Flash
writes and erases are enabled by writing 0xA5 followed by 0xF1 to the FLKEY regis-
ter. Flash writes and erases are automatically disabled after the next write or erase is
complete. If any writes to FLKEY are performed incorrectly, or if a Flash write or erase
operation is attempted while these operations are disabled, the Flash will be perma-
nently locked from writes or erasures until the next device reset. If an application
never writes to Flash, it can intentionally lock the Flash by writing a non-0xA5 value to
FLKEY from software.
Read:
When read, bits 1–0 indicate the current Flash lock state.
00: Flash is write/erase locked.
01: The first key code has been written (0xA5).
10: Flash is unlocked (writes/erases allowed).
11: Flash writes/erases disabled until the next reset.
6
0
5
0
Rev. 1.0
4
0
FLKEY[7:0]
R/W
C8051F99x-C8051F98x
Function
3
0
2
0
1
0
0
0
159
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