Silicon Laboratories C8051F347 - Manual (Page 141)

Rev. 1.3 141
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
Table 14.1. Oscillator Electrical Characteristics
V
DD
= 2.7 to 3.6 V; –40 to +85 °C unless otherwise specified
Parameter Conditions Min Typ Max Units
Internal High-Frequency Oscillator (Using Factory-Calibrated Settings)
Oscillator Frequency IFCN = 11b 11.82 12.00 12.18 MHz
Oscillator Supply Current

(from V
DD
)
24 ºC, V
DD
= 3.0 V,
OSCICN.7 = 1
— 685 — µA
Internal Low-Frequency Oscillator (Using Factory-Calibrated Settings)
Oscillator Frequency OSCLD = 11b 72 80 99 kHz
Oscillator Supply Current

(from V
DD
)
24 ºC, V
DD
= 3.0 V,
OSCLCN.7 = 1
— 7.0 — µA
External USB Clock Requirements
USB Clock Frequency*
Full Speed Mode
Low Speed Mode
47.88
5.91
48
6
48.12
6.09
MHz
*Note: Applies only to external oscillator sources.