CC2430-RTR1-F32Z datasheet(161/234 Pages) TI

161 / 234 page

CC2430

CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A

Page 161 of 232

Table 40: Flash Lock Protection Bits Definition

Bit

Name

Description

7:5

Reserved, write as 0

Boot Block Lock

Page 0 is write protected

BBLOCK

Page 0 is writeable, unless LSIZE is 000

Lock Size. Sets the size of the upper Flash area which is write-

protected. Byte sizes and page number are listed below

000

128k bytes (All pages) CC2430-F128 only

001

64k bytes (page 32 - 63) CC2430-F64/128 only

010

32k bytes (page 48 - 63)

011

16k bytes (page 56 - 63)

100

8k bytes (page 60 - 63)

101

4k bytes (page 62 - 63)

110

2k bytes (page 63)

3:1

LSIZE[2:0]

111

0k bytes (no pages)

Debug lock bit

Disable debug commands

DBGLOCK

Enable debug commands

13.14.4 Flash Write Timing

The Flash Controller contains a timing

generator, which controls the timing

sequence of flash write and erase

operations. The timing generator uses the

information set in the Flash Write Timing

internal timing. FWT.FWT[5:0] must be

set to a value according to the currently

selected CPU clock frequency.

The value set in the FWT.FWT[5:0] shall

be set according to the CPU clock

frequency by the following equation.

21000

CPU

FWT

∗

FCPU is the CPU clock frequency. The

initial value held in FWT.FWT[5:0] after a

reset is 0x2A which corresponds to 32

MHz CPU clock frequency.

The FWT values for the 16 MHz and 32

MHz CPU clock frequencies are given in

Table 41.

CPU clock

frequency (MHz)

FWT

0x15

0x2A

Table 41: Flash timing (FWT) values

13.14.5 Flash DMA trigger

The Flash DMA trigger is activated when

flash data written to the FWDATA register

has been written to the specified location

in the flash memory, thus indicating that

the flash controller is ready to accept new

data to be written to FWDATA.

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