C8051F709-GQR Silicon Labs, C8051F709-GQR Datasheet - Page 159

• Manufacturer Part Number: C8051F709-GQR
• Description: 8-bit Microcontrollers - MCU 8kB 32B EEPROM Cap Sense
• Manufacturer: Silicon Labs

Specifications of C8051F709-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

SFR Definition 23.4. EEKEY: EEPROM Protect Key
SFR Address = 0xC6; SFR Page = F
Name
Reset
Bit
7:0
1:0
Type
Bit
EEPSTATE
EEKEY
Name
7
0
EEPROM Key.
Protects the EEPROM from
inadvertent writes and
erases.
EEPROM Protection State.
These bytes show whether
Flash writes/erases have
been enabled, disabled, or
locked.
6
0
Description
5
0
EEKEY
W
Rev. 1.0
4
0
The sequence 0x55
0xAA must be written to
enable EEPROM writes
and erases
3
0
Write
C8051F70x/71x
2
0
00: Write/Erase is not
enabled
01: The first key has
been written
10: Write/Erase is
enabled
11: EEPROM is locked
from further
writes/erases
EEPSTATE/EEKEY
1
0
Read
R/W
0
0
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