參數(shù)資料
型號: MQ80C52CXXX-20/883R
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQFP44
封裝: CERAMIC, QFP-44
文件頁數(shù): 101/101頁
文件大?。?/td> 3398K
代理商: MQ80C52CXXX-20/883R
122
8168C-MCU Wireless-02/10
AT86RF212
Table 7-32. Crystal Oscillator Operating Mode
Register Bits
Value
Description
0x4
Internal crystal oscillator disabled; use external
reference frequency
0xF
Internal crystal oscillator enabled
XTAL_MODE
Other
Reserved
Bit 3:0 – XTAL_TRIM
The register bits XTAL_TRIM control the two internal capacitance arrays connected to
pins XTAL1 and XTAL2. A capacitance value in the range from 0 pF to 4.5 pF is
selectable with a resolution of 0.3 pF.
Table 7-33. Crystal Oscillator Trimming Capacitors
Register Bits
Value
Description
0x0
0.0 pF
0x1
0.3 pF
0xF
4.5 pF
XTAL_TRIM
Other
Reserved
Register 0x0A (RX_CTRL):
The register RX_CTRL configures the clock jitter.
Table 7-34. Register 0x0A (RX_CTRL)
Bit
7
6
5
4
Name
Reserved
JCM_EN
Reserved
Read/Write
R/W
Reset Value
0
1
Bit
3
2
1
0
Name
Reserved
Read/Write
R/W
Reset Value
0
1
Bit 7:6 – Reserved
Bit 5 – JCM_EN
If this bit is set, the jitter module is enabled.
Bit 4:0 – Reserved
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