C8051F326-TB Silicon Laboratories Inc, C8051F326-TB Datasheet - Page 67
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C8051F326-TB
Manufacturer Part Number
C8051F326-TB
Description
BOARD PROTOTYPING W/C8051F326
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F326-TB.pdf
(140 pages)
Specifications of C8051F326-TB
Contents
Board
Processor To Be Evaluated
C8051F326/F327
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F326
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 67 of 140
- Download datasheet (2Mb)
Bits7–0: FLKEY: Flash Lock and Key Register
Bits7:
Bits6–0: Reserved. Read = 0. Must Write 0.
FOSE
R/W
R/W
Bit7
Bit7
Write:
This register must be written to before Flash writes or erases can be performed. Flash
remains locked until this register is written to with the following key codes: 0xA5, 0xF1. The
timing of the writes does not matter, as long as the codes are written in order. The key codes
must be written for each Flash write or erase operation. Flash will be locked until the next
system reset if the wrong codes are written or if a Flash operation is attempted before the
codes have been written correctly.
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.
FOSE: Flash One-shot Enable
This bit enables the Flash read one-shot. When the Flash one-shot disabled, the Flash
sense amps are enabled for a full clock cycle during Flash reads. At system clock frequen-
cies below 10 MHz, disabling the Flash one-shot will increase system power consumption.
0: Flash one-shot disabled.
1: Flash one-shot enabled.
Reserved Reserved Reserved Reserved Reserved Reserved Reserved 10000000
R/W
R/W
Bit6
Bit6
SFR Definition 8.2. FLKEY: Flash Lock and Key
SFR Definition 8.3. FLSCL: Flash Scale
R/W
R/W
Bit5
Bit5
R/W
R/W
Bit4
Bit4
Rev. 1.1
R/W
R/W
Bit3
Bit3
R/W
R/W
Bit2
Bit2
R/W
R/W
Bit1
Bit1
C8051F326/7
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
00000000
Reset Value
Reset Value
0xB6
0xB7
67
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