C8051F966-A-GQ Silicon Labs, C8051F966-A-GQ Datasheet - Page 254
C8051F966-A-GQ
Manufacturer Part Number
C8051F966-A-GQ
Description
8-bit Microcontrollers - MCU 32KB DC-DC LCD AES
Manufacturer
Silicon Labs
Datasheet
1.C8051F960-A-GQ.pdf
(492 pages)
Specifications of C8051F966-A-GQ
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
Maximum Clock Frequency
24.5 MHz
Program Memory Size
32 KB
Data Ram Size
8 KB
On-chip Adc
Yes
Operating Supply Voltage
1.8 V to 3.8 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
QFP-80
Mounting Style
SMD/SMT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F966-A-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F966-A-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
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C8051F96x
SFR Definition 18.4. FLKEY: Flash Lock and Key
SFR Page = All Pages; SFR Address = 0xB7
254
Name
Reset
7:0 FLKEY[7:0] Flash Lock and Key Register.
Bit
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. 0.5
4
0
FLKEY[7:0]
R/W
Function
3
0
2
0
1
0
0
0
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