C8051F560-TB Silicon Laboratories Inc, C8051F560-TB Datasheet - Page 126
![BOARD PROTOTYPE W/C8051F560](/photos/9/25/92557/c8051f560-tb_sml.jpg)
C8051F560-TB
Manufacturer Part Number
C8051F560-TB
Description
BOARD PROTOTYPE W/C8051F560
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.TOOLSTICK560DC.pdf
(302 pages)
Specifications of C8051F560-TB
Contents
Board
Processor To Be Evaluated
C8051F56x
Processor Series
C8051F56x
Interface Type
USB
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
1.8 V to 5.25 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F55x, C8051F56x, C8051F57x
For Use With
336-1691 - KIT DEVELOPMENT FOR C8051F560
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1694
- Current page: 126 of 302
- Download datasheet (3Mb)
C8051F55x/56x/57x
14.2. Non-volatile Data Storage
The Flash memory can be used for non-volatile data storage as well as program code. This allows data
such as calibration coefficients to be calculated and stored at run time. Data is written using the MOVX
write instruction and read using the MOVC instruction. Note: MOVX read instructions always target XRAM.
14.3. Security Options
The CIP-51 provides security options to protect the Flash memory from inadvertent modification by soft-
ware as well as to prevent the viewing of proprietary program code and constants. The Program Store
Write Enable (bit PSWE in register PSCTL) and the Program Store Erase Enable (bit PSEE in register
PSCTL) bits protect the Flash memory from accidental modification by software. PSWE must be explicitly
set to 1 before software can modify the Flash memory; both PSWE and PSEE must be set to 1 before soft-
ware can erase Flash memory. Additional security features prevent proprietary program code and data
constants from being read or altered across the C2 interface.
A Security Lock Byte located at the last byte of Flash user space offers protection of the Flash program
memory from access (reads, writes, or erases) by unprotected code or the C2 interface. The Flash security
mechanism allows the user to lock n 512-byte Flash pages, starting at page 0 (addresses 0x0000 to
0x01FF), where n is the ones complement number represented by the Security Lock Byte. Note that the
page containing the Flash Security Lock Byte is unlocked when no other Flash pages are locked
(all bits of the Lock Byte are 1) and locked when any other Flash pages are locked (any bit of the
Lock Byte is 0). See example in Figure 14.1.
126
Security Lock Byte:
1s Complement:
Flash pages locked:
any other FLASH
pages are locked
according to the
Access limit set
FLASH security
Locked when
lock byte
11111101b
00000010b
3 (First two Flash pages + Lock Byte Page)
Figure 14.1. Flash Program Memory Map
Rev. 1.1
Unlocked FLASH Pages
Locked Flash Pages
Lock Byte Page
Reserved Area
Lock Byte
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