NUC120LD2BN Nuvoton Technology Corporation of America, NUC120LD2BN Datasheet - Page 42
![IC MCU 32BIT 64KB FLASH 48LQFP](/photos/28/73/287352/nuc120ld2bn_sml.jpg)
NUC120LD2BN
Manufacturer Part Number
NUC120LD2BN
Description
IC MCU 32BIT 64KB FLASH 48LQFP
Manufacturer
Nuvoton Technology Corporation of America
Series
NuMicro™r
Specifications of NUC120LD2BN
Core Processor
ARM Cortex-M0
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, IrDA, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, LVD, POR, PS2, PWM, WDT
Number Of I /o
31
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
8K 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
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NUC120LD2BN
Manufacturer:
NuvoTon
Quantity:
64
Company:
Part Number:
NUC120LD2BN
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
5.3
5.3.1
5.3.2
The clock controller generates the clocks for the whole chip, including system clocks and all
peripheral clocks. The clock controller also implements the power control function with the
individually clock ON/OFF control, clock source selection and a 4-bit clock divider. The chip will
not enter power-down mode until CPU sets the power down enable bit (PWR_DOWN_EN) and
Cortex-M0 core executes the WFI instruction. After that, chip enter power-down mode and wait for
wake-up interrupt source triggered to leave power-down mode. In the power down mode, the
clock controller turns off the external 4~24 MHz crystal and internal 22.1184 MHz oscillator to
reduce the overall system power consumption.
The clock generator consists of 5 clock sources which are listed below:
Clock Controller
Overview
Clock Generator
One external 32.768 kHz crystal
One external 4~24 MHz crystal
One programmable PLL FOUT(PLL source consists of external 4~24 MHz crystal and
internal 22.1184 MHz oscillator)
One internal 22.1184 MHz oscillator
One internal 10 kHz oscillator
XTL12M_EN (PWRCON[0])
OSC22M_EN (PWRCON[2])
OSC10K_EN(PWRCON[3])
XTL32K_EN (PWRCON[1])
XT_OUT
XT_IN
X32O
X32I
Figure 5-4 Clock generator block diagram
22.1184 MHz
32.768 kHz
4~24 MHz
Oscillator
Oscillator
External
External
Internal
Internal
Crystal
Crystal
10 kHz
- 42 -
NuMicro™ NUC120 Data Sheet
0
1
PLL_SRC (PLLCON[19])
Publication Release Date: Nov. 11, 2010
PLL
22.1184 MHz
32.768 kHz
PLL FOUT
4~24 MHz
10 kHz
Revision V2.00