HCS08 datasheet(59/316 Pages) NXP

59 / 316 page

Chapter 4 Memory

MC9S08SG8 MCU Series Data Sheet, Rev. 8

Freescale Semiconductor

4.7.5

FLASH Status Register (FSTAT)

Table 4-11. FPROT Register Field Descriptions

Field

Description

7:1

FPS

FLASH Protect Select Bits — When FPDIS = 0, this 7-bit field determines the ending address of unprotected

FLASH locations at the high address end of the FLASH. Protected FLASH locations cannot be erased or

programmed.

FPDIS

FLASH Protection Disable

0 FLASH block specified by FPS7:FPS1 is block protected (program and erase not allowed).

1 No FLASH block is protected.

321

FCBEF

FCCF

FPVIOL

FACCERR

0FBLANK0

Reset

110

000

= Unimplemented or Reserved

Figure 4-9. FLASH Status Register (FSTAT)

Table 4-12. FSTAT Register Field Descriptions

Field

Description

FCBEF

FLASH Command Buffer Empty Flag — The FCBEF bit is used to launch commands. It also indicates that the

command buffer is empty so that a new command sequence can be executed when performing burst

programming. The FCBEF bit is cleared by writing a 1 to it or when a burst program command is transferred to

the array for programming. Only burst program commands can be buffered.

0 Command buffer is full (not ready for additional commands).

1 A new burst program command can be written to the command buffer.

FCCF

FLASH Command Complete Flag — FCCF is set automatically when the command buffer is empty and no

command is being processed. FCCF is cleared automatically when a new command is started (by writing 1 to

FCBEF to register a command). Writing to FCCF has no meaning or effect.

0 Command in progress

1 All commands complete

FPVIOL

Protection Violation Flag — FPVIOL is set automatically when a command is written that attempts to erase or

program a location in a protected block (the erroneous command is ignored). FPVIOL is cleared by writing a 1 to

FPVIOL.

0 No protection violation.

1 An attempt was made to erase or program a protected location.

HCS08 데이터시트(PDF) 59 Page - NXP Semiconductors

HCS08 데이터시트(HTML) 59 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL