參數(shù)資料
型號: DTMFDECODER-RD
廠商: Silicon Laboratories Inc
文件頁數(shù): 172/178頁
文件大?。?/td> 0K
描述: KIT REF DESIGN DTMF DECODER
應(yīng)用說明: DTMF Decoder Ref Design AppNote
標準包裝: 1
主要目的: 電信,DTMF 解碼器
嵌入式:
已用 IC / 零件: C8051F300
主要屬性: 8kHz 采樣速率模數(shù)轉(zhuǎn)換器
次要屬性: 16 個 Goertzel 濾波器
已供物品: 板,軟件
產(chǎn)品目錄頁面: 627 (CN2011-ZH PDF)
相關(guān)產(chǎn)品: 336-1535-5-ND - IC 8051 MCU 8K FLASH 14-SOIC
C8051F300-GMR-ND - IC 8051 MCU 8K FLASH 11QFN
336-1245-ND - IC 8051 MCU 8K FLASH 11QFN
其它名稱: 336-1283
Rev. 2.9
93
C8051F300/1/2/3/4/5
SFR Definition 10.2.
Bits7–0: FLKEY: Flash Lock and Key Register
Write:
This register must be written to before Flash writes or erases can be performed. Flash
remains locked until this register is written to with the following key codes: 0xA5, 0xF1. The
timing of the writes does not matter, as long as the codes are written in order. The key codes
must be written for each Flash write or erase operation. Flash will be locked until the next
system reset if the wrong codes are written or if a Flash operation is attempted before the
codes have been written correctly.
Read:
When read, bits 1–0 indicate the current Flash lock state.
00: Flash is write/erase locked.
01: The first key code has been written (0xA5).
10: Flash is unlocked (writes/erases allowed).
11: Flash writes/erases disabled until the next reset.
R/W
Reset Value
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xB7
FLKEY: Flash Lock and Key
SFR Definition 10.3.
Bits7:
FOSE: Flash One-shot Enable
This bit enables the 50 ns Flash read one-shot. When the Flash one-shot disabled, the
Flash sense amps are enabled for a full clock cycle during Flash reads.
0: Flash one-shot disabled.
1: Flash one-shot enabled.
Bits6–0: RESERVED. Read = 0. Must Write 0.
R/W
Reset Value
FOSE
Reserved Reserved Reserved Reserved Reserved Reserved Reserved 10000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xB6
FLSCL: Flash Scale
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