NUC130LE3CN Nuvoton Technology Corporation of America, NUC130LE3CN Datasheet - Page 130

• Manufacturer Part Number: NUC130LE3CN
• Description: IC MCU 32BIT 128KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™ NUC100r

Specifications of NUC130LE3CN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

NuMicro™ NUC130/NUC140 Technical Reference Manual
5.3.6
Frequency Divider Output
This device is equipped a power-of-2 frequency divider which is composed by16 chained divide-
by-2 shift registers. One of the 16 shift register outputs selected by a sixteen to one multiplexer is
reflected to CLKO function pin. Therefore there are 16 options of power-of-2 divided clocks with
1
16
the frequency from F
/2
to F
/2
where Fin is input clock frequency to the clock divider.
in
in
(N+1)
The output formula is F
, where F
is the input clock frequency, F
is the clock
= F
/2
in
out
out
in
divider output frequency and N is the 4-bit value in FSEL (FRQDIV[3:0]).
When write 1 to DIVIDER_EN (FRQDIV[4]), the chained counter starts to count. When write 0 to
DIVIDER_EN (FRQDIV[4]), the chained counter continuously runs till divided clock reaches low
state and stay in low state.
Figure 5-8 Clock Source of Frequency Divider
Figure 5-9 Block Diagram of Frequency Divider
Publication Release Date: June 14, 2011
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Revision V2.01