參數(shù)資料
型號(hào): C8051F226
廠商: Silicon Laboratories Inc
文件頁數(shù): 145/146頁
文件大?。?/td> 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
標(biāo)準(zhǔn)包裝: 250
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(shè)備: 欠壓檢測(cè)/復(fù)位,POR,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 32x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 48-TQFP
包裝: 托盤
C8051F2xx
98
Rev. 1.6
SFR Definition 13.1. OSCICN: Internal Oscillator Control
Bit7:
MSCLKE: Missing Clock Enable Bit
0: Missing Clock Detector Disabled
1: Missing Clock Detector Enabled; triggers a reset if a missing clock is detected
Bits6–5: UNUSED. Read = 00b, Write = don't care
Bit4:
IFRDY: Internal Oscillator Frequency Ready Flag
0: Internal Oscillator Frequency not running at speed specified by the IFCN bits.
1: Internal Oscillator Frequency running at speed specified by the IFCN bits.
Bit3:
CLKSL: System Clock Source Select Bit
0: Uses Internal Oscillator as System Clock.
1: Uses External Oscillator as System Clock.
Bit2:
IOSCEN: Internal Oscillator Enable Bit
0: Internal Oscillator Disabled
1: Internal Oscillator Enabled
Bits1–0: IFCN1-0: Internal Oscillator Frequency Control Bits
00: Internal Oscillator typical frequency is 2 MHz.
01: Internal Oscillator typical frequency is 4 MHz.
10: Internal Oscillator typical frequency is 8 MHz.
11: Internal Oscillator typical frequency is 16 MHz.
R/W
Reset Value
MSCLKE
-
IFRDY
CLKSL
IOSCEN
IFCN1
IFCN0
00000100
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xB2
Table 13.1. Internal Oscillator Electrical Characteristics
–40 to +85 ×C unless otherwise specified.
Parameter
Conditions
Min
Typ
Max
Units
Internal Oscillator Frequency
OSCICN.[1:0] = 00
OSCICN.[1:0] = 01
OSCICN.[1:0] = 10
OSCICN.[1:0] = 11
1.5
3.0
6.0
12
2.0
4.0
8.0
16
2.5
5.0
10
20
MHz
Internal Oscillator Current Consumption OSCICN.2 = 1
200
A
Internal Oscillator Temperature Stability
4
ppm/
C
Internal Oscillator Power Supply (VDD)
Stability
6.4
%/V
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