C8051F350DK Silicon Laboratories Inc, C8051F350DK Datasheet - Page 125
![DEV KIT FOR F350/351/352/353](/photos/9/23/92327/c8051f350dk_sml.jpg)
C8051F350DK
Manufacturer Part Number
C8051F350DK
Description
DEV KIT FOR F350/351/352/353
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F350DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F35x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F350
Silicon Family Name
C8051F35x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F350, 351, 352, 353
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1083
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F350DK
Manufacturer:
SiliconL
Quantity:
8
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Bits7–2: UNUSED: Read = 000000b, Write = don’t care.
Bit1:
Bit0:
Bits7–0: FLKEY: Flash Lock and Key Register
R/W
Bit7
Bit7
—
R
PSEE: Program Store Erase Enable
Setting this bit (in combination with PSWE) allows an entire page of Flash program memory
to be erased. If this bit is logic 1 and Flash writes are enabled (PSWE is logic 1), a write to
Flash memory using the MOVX instruction will erase the entire page that contains the loca-
tion addressed by the MOVX instruction. The value of the data byte written does not matter.
0: Flash program memory erasure disabled.
1: Flash program memory erasure enabled.
PSWE: Program Store Write Enable
Setting this bit allows writing a byte of data to the Flash program memory using the MOVX
write instruction. The Flash location should be erased before writing data.
0: Writes to Flash program memory disabled.
1: Writes to Flash program memory enabled; the MOVX write instruction targets Flash
memory.
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 register. 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 permanently locked from writes or era-
sures 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.
SFR Definition 15.1. PSCTL: Program Store R/W Control
R/W
Bit6
Bit6
—
R
SFR Definition 15.2. FLKEY: Flash Lock and Key
R/W
Bit5
Bit5
—
R
R/W
Bit4
Bit4
—
R
Rev. 1.1
R/W
Bit3
Bit3
—
R
R/W
Bit2
Bit2
—
R
C8051F350/1/2/3
PSEE
R/W
R/W
Bit1
Bit1
SFR Address:
SFR Address:
PSWE
R/W
R/W
Bit0
Bit0
0x8F
0xB7
00000000
00000000
Reset Value
Reset Value
125
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