參數(shù)資料
型號: C8051F236-GQR
廠商: Silicon Laboratories Inc
文件頁數(shù): 49/146頁
文件大?。?/td> 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
產(chǎn)品培訓模塊: Serial Communication Overview
標準包裝: 500
系列: C8051F2xx
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 48-TQFP
包裝: 帶卷 (TR)
C8051F2xx
142
Rev. 1.6
JTAG Register Definition 18.4. FLASHDAT: JTAG Flash Data
This register is used to read or write data to the Flash memory across the JTAG interface.
Bits9–2: DATA7–0: Flash Data Byte.
Bit1:
FAIL: Flash Fail Bit.
0:
Previous Flash memory operation was successful.
1:
Previous Flash memory operation failed. Usually indicates the associated memory
location was locked.
Bit0:
BUSY: Flash Busy Bit.
0:
Flash interface logic is not busy.
1:
Flash interface logic is processing a request. Reads or writes while BUSY = 1 will
not initiate another operation
JTAG Register Definition 18.5. FLASHSCL: JTAG Flash Scale
This register controls the Flash read timing circuit and the prescaler required to generate the correct
timing for Flash operations.
Bit7:
FOSE: Flash One-Shot Enable Bit.
0: Flash read strobe is a full clock-cycle wide.
1: Flash read strobe is 50nsec.
Bit6:
FRAE: Flash Read Always Bit.
0: The Flash output enable and sense amplifier enable are on only when needed to read the
Flash memory.
1: The Flash output enable and sense amplifier enable are always on. This can be used to
limit the variations in digital supply current due to switching the sense amplifiers, thereby
reducing digitally induced noise.
Bits5–4: UNUSED. Read = 00b, Write = don't care.
Bits3–0: FLSCL3–0: Flash Prescaler Control Bits.
The FLSCL3–0 bits control the prescaler used to generate timing signals for Flash opera-
tions. Its value should be written before any Flash write or erase operations are initiated.
The value written should be the smallest integer for which:
FLSCL[3:0] > log2(fSYSCLK / 50kHz)
Where fSYSCLK is the system clock frequency. All Flash read/write/erase operations are
disallowed when FLSCL[3:0] = 1111b.
Reset Value
DATA7 DATA6
DATA5
DATA4 DATA3 DATA2 DATA1
DATA0
FAIL
BUSY
0000000000
Bit9
Bit8
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Reset Value
FOSE
FRAE
-
FLSCL3
FLSCL2
FLSCL1
FLSCL0
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
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