參數(shù)資料
型號(hào)： C8051F005DK
廠商： Silicon Laboratories Inc
文件頁數(shù)： 159/171頁
文件大?。?/td> 0K
描述： DEV KIT FOR F005/006/007
標(biāo)準(zhǔn)包裝： 1
類型： MCU
適用于相關(guān)產(chǎn)品： Silicon Laboratories C8051 F005/006/007
所含物品： 評(píng)估板，電源，USB 線纜，適配器和文檔
產(chǎn)品目錄頁面： 626 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： C8051F007-GQR-ND - IC 8051 MCU 32K FLASH 32LQFP
C8051F006-GQR-ND - IC 8051 MCU 32K FLASH 48TQFP
C8051F005-GQR-ND - IC 8051 MCU 32K FLASH 64TQFP TAP
336-1190-ND - IC 8051 MCU 32K FLASH 32LQFP
336-1189-ND - IC 8051 MCU 32K FLASH 48TQFP
336-1187-ND - IC 8051 MCU 32K FLASH 64TQFP
其它名稱： 336-1188
Rev. 1.7
88
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
11.2.
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 instruction and
read using the MOVC instruction.
The MCU incorporates an additional 128-byte sector of Flash memory located at 0x8000 – 0x807F. This sector can
be used for program code or data storage. However, its smaller sector size makes it particularly well suited as
general purpose, non-volatile scratchpad memory. Even though Flash memory can be written a single byte at a
time, an entire sector must be erased first. In order to change a single byte of a multi-byte data set, the data must be
moved to temporary storage. Next, the sector is erased, the data set updated and the data set returned to the original
sector. The 128-byte sector-size facilitates updating data without wasting program memory space by allowing the
use of internal data RAM for temporary storage. (A normal 512-byte sector is too large to be stored in the 256-byte
internal data memory.)
11.3.
Security Options
The CIP-51 provides security options to protect the Flash memory from inadvertent modification by software as
well as prevent the viewing of proprietary program code and constants.
The Program Store Write Enable
(PSCTL.0) and the Program Store Erase Enable (PSCTL.1) bits protect the Flash memory from accidental
modification by software. These bits must be explicitly set to logic 1 before software can modify the Flash memory.
Additional security features prevent proprietary program code and data constants from being read or altered across
the JTAG interface or by software running on the system controller.
A set of security lock bytes stored at 0x7DFE and 0x7DFF protect the Flash program memory from being read or
altered across the JTAG interface. Each bit in a security lock-byte protects one 4kbyte block of memory. Clearing
a bit to logic 0 in a Read lock byte prevents the corresponding block of Flash memory from being read across the
JTAG interface. Clearing a bit in the Write/Erase lock byte protects the block from JTAG erasures and/or writes.
The Read lock byte is at location 0x7DFF. The Write/Erase lock byte is located at 0x7DFE. Figure 11.2 shows the
location and bit definitions of the security bytes. The 512-byte sector containing the lock bytes can be written to,
but not erased by software. Writing to the reserved area should not be performed.
Figure 11.1. PSCTL: Program Store RW Control
R/W
Reset Value
-
PSEE
PSWE
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0x8F
Bits7-2: UNUSED. Read = 000000b, Write = don’t care.
Bit1:
PSEE: Program Store Erase Enable.
Setting this bit allows an entire page of the Flash program memory to be erased provided
the PSWE bit is also set. After setting this bit, a write to Flash memory using the MOVX
instruction will erase the entire page that contains the location addressed by the MOVX
instruction. The value of the data byte written does not matter.
0: Flash program memory erasure disabled.
1: Flash program memory erasure enabled.
Bit0:
PSWE: Program Store Write Enable.
Setting this bit allows writing a byte of data to the Flash program memory using the
MOVX instruction. The location must be erased before writing data.
0: Write to Flash program memory disabled.
1: Write to Flash program memory enabled.
相關(guān)PDF資料
PDF描述
LM4040C25QDBZTG4 IC VREF SHUNT PREC 2.5V SOT-23-3
LB2016T330K INDUCTOR WOUND 33UH 85MA 0806
GEM12DTMN-S189 CONN EDGECARD 24POS R/A .156 SLD
LM4040C25IDBZTG4 IC VREF SHUNT PREC 2.5V SOT-23-3
GEM12DTMH-S189 CONN EDGECARD 24POS R/A .156 SLD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
C8051F005DK-A 功能描述:DEV KIT FOR C8051F005/F006/F007 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035
C8051F005DK-B 功能描述:DEV KIT FOR C8051F005/F006/F007 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035
C8051F005DK-E 功能描述:DEV KIT FOR C8051F005/F006/F007 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035
C8051F005DK-H 功能描述:DEV KIT FOR C8051F005/F006/F007 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035
C8051F005DK-J 功能描述:DEV KIT FOR C8051F005/F006/F007 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊(cè) 其它名稱:520-1035
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*
    • 我
    • 采购
    • 搜索
    • 会员