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NUC123

ARM Cortex-M0 32-bit Microcontroller

The NUC123 is a arm cortex-m0 32-bit microcontroller from Nuvoton Technology Corporation. View the full NUC123 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

NUC123 shares its datasheet with NUC123SD4AN0, whose page lists every part number it covers.

Official NUC123 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Nuvoton Technology Corporation

Category

Microcontrollers (MCU)

NUC123 Key Specifications

ParameterValue
ADC3x10-bit (QFN33), 8x10-bit (LQFP48/64)
I2C1 to 2
I2S1
PWM3 to 4 channels
SPI3
USB1 (Device)
CoreARM Cortex-M0 32-bit
PS/21 (LQFP48/64 only)
SRAM12 KB to 20 KB
UART1 to 2
Timers4x32-bit
ISP ROM4 KB
I/O PinsUp to 20 (QFN33), up to 36 (LQFP48), up to 47 (LQFP64)
Flash Memory36 KB to 68 KB
Available PackagesLQFP64 7x7mm, LQFP48 7x7mm, QFN33 5x5mm

NUC123 Overview

Part: NUC123 Series — Nuvoton Technology Corporation

Type: ARM Cortex-M0 32-bit Microcontroller

Description: A 32-bit ARM Cortex-M0 microcontroller with USB 2.0 Full-speed device, 10-bit ADC, operating up to 72 MHz, with up to 68 Kbytes Flash memory and 20 Kbytes SRAM.

Operating Conditions:

  • Supply voltage: 2.5V ~ 5.5V
  • Operating temperature: -40°C ~ +85°C (suffix-dependent — see Table 1-1 for grade-specific ranges)
  • Max CPU frequency: 72 MHz

Absolute Maximum Ratings:

  • Max supply voltage: 6.0 V
  • Max junction/storage temperature: -55 to +150 °C

Key Specs:

  • CPU: ARM Cortex-M0
  • Max CPU frequency: 72 MHz
  • Flash memory: Up to 68 Kbytes
  • SRAM: Up to 20 Kbytes
  • Operating voltage range: 2.5V to 5.5V
  • ADC resolution: 10-bit SAR
  • USB: USB 2.0 Full-speed device, 8 endpoints
  • I/O supply voltage (VDDIO): 2.5V to 5.5V
  • I/O sink/source current (per pin): ±25 mA

Features:

  • 32-bit multiplier
  • Nested Vectored Interrupt Controller (NVIC)
  • Dual-channel APB
  • Peripheral Direct Memory Access (PDMA) with CRC function
  • 4 Kbytes loader ROM for ISP
  • Multiple power modes
  • Watchdog Timer (WDT) and Window Watchdog Timer (WWDT)
  • UART, PS/2, I2C, SPI, I2S interfaces

Applications:

  • Industrial control
  • Consumer electronics
  • Communication system applications (printers, touch panel, gaming keyboard, gaming joystick, USB audio, PC peripherals, alarm systems)

Package:

  • 64L LQFP (7x7x1.4 mm)
  • 48L LQFP (7x7x1.4 mm)
  • 33L QFN (5x5x0.8 mm)

NUC123 Features

  • Core

  • -ARM ® Cortex ® -M0 core runs up to 72 MHz

  • -One 24-bit system timer

  • -Supports low power sleep mode

  • -Single-cycle 32-bit hardware multiplier

  • -NVIC for the 32 interrupt inputs, each with 4-levels of priority

  • -Supports Serial Wire Debug with 2 watchpoints/4 breakpoints

  • Built-in LDO for wide operating voltage ranges from 2.5 V to 5.5 V

  • Flash Memory

  • -36/68 KB Flash for program code

  • -4 KB flash for ISP loader

  • -Supports In-System Program (ISP) application code update

  • -512 byte page erase for flash

  • -Configurable Data Flash address and size for both 36KB and 68KB system

  • -Supports 2-wire ICP update through SWD/ICE interface

  • -Supports fast parallel programming mode by external programmer

  • SRAM Memory

  • -12/20 KB embedded SRAM

  • -Supports PDMA mode

  • PDMA (Peripheral DMA)

  • -Supports 6 channels PDMA for automatic data transfer between SRAM and peripherals such as SPI, UART, I 2 S, USB 2.0 FS device, PWM and ADC

  • -Supports CRC calculation with four common polynomials, CRC-CCITT, CRC-8, CRC16 and CRC-32

  • Clock Control

  • -Flexible selection for different applications

  • -Built-in 22.1184 MHz high speed oscillator (Trimmed to 1%) for system operation, and low power 10 kHz low speed oscillator for watchdog and wake-up operation

  • -Supports one PLL, up to 144 MHz, for high performance system operation

  • -External 4~24 MHz high speed crystal input for precise timing operation

  • GPIO

  • -Four I/O modes:

  • Quasi bi-direction

  • Push-Pull output

  • Open-Drain output

  • Input only with high impendence

  • -TTL/Schmitt trigger input selectable

  • -I/O pin configured as interrupt source with edge/level setting

  • -Supports High Driver and High Sink I/O mode

  • Timer

  • -Supports 4 sets of 32-bit timers with 24-bit up-timer and one 8-bit pre-scale counter

  • -Independent clock source for each timer

  • -Provides one-shot, periodic, toggle and continuous counting operation modes

  • -Supports event counting function

  • Watchdog/Windowed-Watchdog Timer

  • -Multiple clock sources

  • -8 selectable time-out period from 1.6ms ~ 26.0sec (depending on clock source)

  • -Wake-up from Power-down or Idle mode

  • -Interrupt or reset selectable on watchdog timer time-out

  • -Interrupt on windowed-watchdog timer time-out

  • -Reset on windowed-watchdog timer time-out or reload in an unexpected time window

NUC123 Pin Configuration

Pin NoPin NoPin NoPin NameTypeDescription
LQFP 64- pinLQFP 48- pinQFN 33- pinPin NameTypeDescription
131PB.14I/ODigital GPIO pin
131INT0IExternal interrupt 0 input pin
2PB.13I/ODigital GPIO pin
3PB.12I/ODigital GPIO pin
3SPI1_SS0I/OSPI1 1 st slave select pin
3CLKOOFrequency Divider output pin
442PA.11I/ODigital GPIO pin
442SPI1_CLKI/OSPI1 serial clock pin
442SPI2_MOSI0I/OSPI2 1 st MOSI (Master Out, Slave In) pin
442I2C1_SCLI/OI 2 C1 clock pin
5*5*3*PA.10I/ODigital GPIO pin
5*5*3*SPI1_MISO0I/OSPI1 1 st MISO (Master In, Slave Out) pin
5*5*3*SPI2_MISO0I/OSPI2 1 st MISO (Master In, Slave Out) pin
5*5*3*I2C1_SDAI/OI 2 C1 data input/output pin
6PD.8I/ODigital GPIO pin
6SPI1_MOSI0I/OSPI1 1 st MOSI (Master Out, Slave In) pin
7PD.9I/ODigital GPIO pin
8PD.10I/ODigital GPIO pin
8CLKOOFrequency Divider output pin
9PD.11I/ODigital GPIO pin
9INT1IExternal interrupt 1 input pin
1064PB.4I/ODigital GPIO pin
1064UART1_RXDIUART1 data receiver input pin
1064SPI2_SS0I/OSPI2 1 st slave select pin
1064SPI1_SS1I/OSPI1 2 nd slave select pin
1175PB.5I/ODigital GPIO pin
1175UART1_TXDOUART1 data transmitter output pin
1175SPI2_CLKI/OSPI2 serial clock pin
128PB.6I/ODigital GPIO pin
128UART1_nRTSOUART1 request to send output pin
SPI2_MOSI0I/OSPI2 1 st MOSI (Master Out, Slave In) pin
PB.7I/ODigital GPIO pin
139UART1_nCTSIUART1 clear to send input pin
SPI2_MISO0I/OSPI2 1 st MISO (Master In, Slave Out) pin
14106LDO_CAPPLDO output pin
15117V DDPPower supply for I/O ports and LDO source for internal PLL and digital function. Voltage range is 2.5V ~ 5V.
16128V SSPGround
17139USB_VBUSUSBPower supply from USB host or hub
181410USB_VDD33_CAPUSBInternal power regulator output 3.3V decoupling pin
191511USB_D-USBUSB differential signal D-
201612USB_D+USBUSB differential signal D+
21PB.0I/ODigital GPIO pin
21UART0_RXDIUART0 data receiver input pin
22PB.1I/ODigital GPIO pin
22UART0_TXDOUART0 data transmitter output pin
PB.2I/ODigital GPIO pin
23UART0_nRTSOUART0 request to send output pin
TM2_EXTITimer2 external capture input pin
PB.3I/ODigital GPIO pin
24UART0_nCTSIUART0 clear to send input pin
TM3_EXTITimer3 external capture input pin
PC.5I/ODigital GPIO pin
2517SPI0_MOSI1I/OSPI0 2 nd MOSI (Master Out, Slave In) pin
UART0_TXDOUART0 data transmitter output pin
PC.4I/ODigital GPIO pin
2618SPI0_MISO1I/OSPI0 2 nd MISO (Master In, Slave Out) pin
UART0_RXDIUART0 data receiver input pin
PC.3I/ODigital GPIO pin
271913SPI0_MOSI0I/OSPI0 1 st MOSI (Master Out, Slave In) pin
I2S_DOOI 2 S data output pin
PC.2I/ODigital GPIO pin
282014SPI0_MISO0
I2S_DI		I/OSPI0 1 st MISO (Master In, Slave Out) pin
I 2 S data input pin
PC.1IDigital GPIO pin
292115SPI0_CLKI/O I/OSPI0 serial clock pin
I2S_BCLKI/OI 2 S bit clock pin
PC.0I/ODigital GPIO pin
3022SPI0_SS0I/OSPI0 1 st slave select pin
I2S_LRCLKI/OI 2 S left/right channel clock pin
PB.10I/ODigital GPIO pin
3123SPI0_SS1I/OSPI0 2 nd slave select pin
TM2I/OTimer2 event counter input / toggle output pin
PB.9I/ODigital GPIO pin
SPI1_SS1I/OSPI1 2 nd slave select pin
3224TM1I/OTimer1 event counter input / toggle output pin
PWM1I/OPWM1 PWM output / capture input pin (NUC123xxxAEx Only)
V SSPGround
33PC.13I/ODigital GPIO pin
SPI1_MOSI1I/OSPI1 2 nd MOSI (Master Out, Slave In) pin
3425PWM3I/OPWM3PWM output / capture input pin
CLKOOFrequency Divider output pin
PC.12I/ODigital GPIO pin
SPI1_MISO1I/OSPI1 2 nd MISO (Master In, Slave Out) pin
3526PWM2I/OPWM2PWM output / capture input pin
I2S_MCLKOI 2 S master clock output pin
PC.11I/ODigital GPIO pin
3627SPI1_MOSI0I/OSPI1 1 st MOSI (Master Out, Slave In) pin
PC.10I/ODigital GPIO pin
3728SPI1_MISO0I/OSPI1 1 st MISO (Master In, Slave Out) pin
38V DDPPower supply for I/O ports and LDO source for internal PLL and digital function. Voltage range is 2.5V ~ 5V.
PC.9I/ODigital GPIO pin
3929SPI1_CLKI/OSPI1 serial clock pin
PC.8I/ODigital GPIO pin
4030SPI1_SS0I/OSPI1 1 st slave select pin
PWM0I/OPWM0 PWM output / capture input pin (NUC123xxxAEx Only)
PA.15I/ODigital GPIO pin
41PWM3I/OPWM3PWM output / capture input pin
31I2S_MCLK CLKOO OI 2 S master clock output pin Frequency Divider output pin
42V SSPGround
4332PA.14I/ODigital GPIO pin
4332PWM2I/OPWM2PWM output / capture input pin
4433PA.13I/ODigital GPIO pin
4433PWM1I/OPWM1PWM output / capture input pin
4534PA.12I/ODigital GPIO pin
4534PWM0I/OPWM0PWM output / capture input pin
4635ICE_DATI/OSerial wired debugger data pin Note: It is recommended to use 100 kΩ pull-up resistor on ICE_DAT pin.
4736ICE_CLKISerial wired debugger clock input pin Note: It is recommended to use 100 kΩ pull-up resistor on ICE_CLK pin.
4837AV DDAPPower supply for internal analog circuit
4938PD.0I/ODigital GPIO pin
4938ADC0AIADC channel 0 analog input pin
4938SPI2_SS0I/OSPI2 1 st slave select pin
5039PD.1I/ODigital GPIO pin
5039SPI2_CLKI/OSPI2 serial clock pin
5039SPI0_SS1I/OSPI0 2 nd slave select pin
5039ADC1AIADC channel 1 analog input pin
5140PD.2I/ODigital GPIO pin
5140SPI2_MISO0I/OSPI2 1 st MISO (Master In, Slave Out) pin
5140SPI0_MISO1I/OSPI0 2 nd MISO (Master In, Slave Out) pin
5140ADC2AIADC channel 2 analog input pin
5241PD.3I/ODigital GPIO pin
5241SPI2_MOSI0I/OSPI2 1 st MOSI (Master Out, Slave In) pin
5241SPI0_MOSI1I/OSPI0 2 nd MOSI (Master Out, Slave In) pin
5241ADC3AIADC channel 3 analog input pin
5342PD.4I/ODigital GPIO pin
5342ADC4AIADC channel 4 analog input pin
5342SPI2_MISO1I/OSPI2 2 nd MISO (Master In, Slave Out) pin
5443PD.5I/ODigital GPIO pin
5443ADC5AIADC channel 5 analog input pin
5443SPI2_MOSI1I/OSPI2 2 nd MOSI (Master Out, Slave In) pin
55PB.15I/ODigital GPIO pin
55INT1IExternal interrupt 1 input pin
TM0_EXTITimer0 external capture input pin
564429PF.0I/ODigital GPIO pin
564429XT1_OUTOExternal 4~24 MHz high speed crystal output pin
574530PF.1I/ODigital GPIO pin
574530XT1_INIExternal 4~24 MHz high speed crystal input pin
584631nRESETIExternal reset input: Low active, set this pin low reset chip to initial state. With internal pull-up. Note: It is recommended to use 10 kΩ pull-up resistor and 10 μF capacitor on nRESET pin.
59V SSPGround
60V DDPPower supply for I/O ports and LDO source for internal PLL and digital circuit. Voltage range is 2.5 V ~ 5V.
6147PF.2I/ODigital GPIO pin
6147ADC6AIADC channel 6 analog input pin
6147I2C0_SDAI/OI 2 C0 data input/output pin
6147PS2_DATI/OPS/2 data pin
6248PF.3I/ODigital GPIO pin
6248ADC7AIADC channel 7 analog input pin
6248I2C0_SCLI/OI 2 C0 clock pin
6248PS2_CLKI/OPS/2 clock pin
63132PV SSPPLL ground
642PB.8I/ODigital GPIO pin
642TM0I/OTimer0 event counter input / toggle output pin

Note: Pin Type I = Digital Input, O = Digital Output; AI = Analog Input; P = Power Pin; AP = Analog Power

NUC123 Electrical Characteristics

(VDD -VSS = 5.5 V, TA = 25 C)

PARAMETERSYMSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSTEST CONDITIONS
PARAMETERSYMMINTYPMAXUNITTEST CONDITIONS
Operation voltageV DD2.55.5VV DD = 2.5V ~ 5.5V up to 72 MHz
V DD rise rate to ensure internal operation correctlyV RISE0.05V/ms
Power groundV SS AV SS-0.3V
LDO output voltageV LDO1.621.81.98VV DD > 2.5V
Analog operating voltageAV DD0V DDVWhen system uses analog function, please refer to chapter 7.4 for corresponding analog operating voltage
Operating current Normal Run mode at 72 MHzI DD136mAV DD = 5.5V at 72 MHz, All IP and PLL Enabled, XTAL = 12 MHz
Operating current Normal Run mode at 72 MHzI DD221mAV DD = 5.5V at 72 MHz, All IP Disabled and PLL Enabled, XTAL = 12 MHz
Operating current Normal Run mode at 72 MHzI DD335mAV DD = 3V at 72 MHz, All IP and PLL enabled, XTAL = 12 MHz
Operating current Normal Run mode at 72 MHzI DD420mAV DD = 3V at 72 MHz, All IP Disabled and PLL Enabled, XTAL = 12 MHz
Operating current Normal Run mode at 12 MHzI DD57mAV DD = 5.5V at 12 MHz, All IP Enabled and PLL Disabled, XTAL = 12 MHz
Operating current Normal Run mode at 12 MHzI DD64mAV DD = 5.5V at 12 MHz, All IP and PLL Disabled, XTAL = 12 MHz
Operating current Normal Run mode at 12 MHzI DD76mAV DD = 3V at 12 MHz, All IP Enabled and PLL Disabled, XTAL = 12 MHz
Operating current Normal Run mode at 12 MHzI DD83mAV DD = 3V at 12 MHz, All IP and PLL Disabled, XTAL = 12 MHz
Operating current Normal Run modeI DD94mAV DD = 5V at 4 MHz, All IP Enabled and PLL Disabled, XTAL = 4 MHz
PARAMETERSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSTEST
SYMMINTYPMAXUNITCONDITIONS
at 4 MHzI DD103mAV DD = 5V at 4 MHz, All IP and PLL Disabled, XTAL = 4 MHz
at 4 MHzI DD114mAV DD = 3V at 4 MHz, All IP Enabled and PLL Disabled, XTAL = 4 MHz
at 4 MHzI DD122mAV DD = 3V at 4 MHz, All IP and PLL Disabled, XTAL = 4 MHz
Operating current Idle mode at 72 MHzI IDLE129mAV DD = 5.5V at 72 MHz, All IP and PLL Enabled, XTAL = 12 MHz
I IDLE214mAV DD = 5.5V at 72 MHz, All IP Disabled and PLL Enabled, XTAL = 12 MHz
I IDLE328mAV DD = 3V at 72 MHz, All IP and PLL Enabled, XTAL = 12 MHz
I IDLE413mAV DD = 3V at 72 MHz, All IP Disabled and PLL Enabled, XTAL=12 MHz
Operating current Idle mode at 12 MHzI IDLE56mAV DD = 5.5V at 12 MHz, All IP Enabled and PLL Disabled, XTAL = 12 MHz
I IDLE63mAV DD = 5.5V at 12 MHz, All IP and PLL Disabled, XTAL = 12 MHz
I IDLE75mAV DD = 3V at 12 MHz, All IP Enabled and PLL Disabled, XTAL = 12 MHz
I IDLE82mAV DD = 3 V at 12 MHz, All IP and PLL Disabled, XTAL = 12 MHz
Operating current Idle mode at 4 MHzI IDLE93mAV DD = 5V at 4 MHz, All IP Enabled and PLL Disabled, XTAL = 4 MHz
Operating current Idle mode at 4 MHzI IDLE102mAV DD = 5V at 4 MHz, All IP and PLL Disabled, XTAL = 4 MHz
Operating current Idle mode at 4 MHzI IDLE112mAV DD = 3V at 4 MHz, All IP Enabled and PLL Disabled, XTAL = 4 MHz
Operating current Idle mode at 4 MHzI IDLE121mAV DD = 3V at 4 MHz, All IP and PLL Disabled, XTAL = 4 MHz
PARAMETERSYMSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSTEST
MINTYPMAXUNITCONDITIONS
I IDLE5131μAV DD = 5.5V at 10 kHz, All IP Enabled and PLL Disabled, LIRC 10 kHz Enabled
Operating current Idle modeI IDLE6129μAV DD = 5.5V at 10 kHz, All IP and PLL Disabled, LIRC 10 kHz Enabled
at 10 kHzI IDLE7125μAV DD = 3V at 10 kHz, All IP Enabled and PLL Disabled, LIRC 10 kHz Enabled
at 10 kHzI IDLE8124μAV DD = 3 V at 10 kHz, All IP and PLL Disabled, LIRC 10 kHz Enabled
Standby currentI PWD112μAV DD = 5.5V, No load when BOV function Disabled
Power-down modeI PWD29μAV DD = 3.3V, No load when BOV function Disabled
Input Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional mode)I IN1-64μAV DD = 5.5V, V IN = 0V or V IN = V DD
Input Current at /RESET [1]I IN2-55-45-30μAV DD = 3.3V, V IN = 0.45V
Input Leakage Current PA, PB, PC, PD, PE, PFI LK-2-+2μAV DD = 5.5V, 0 < V IN < V DD
Logic 1 to 0 Transition Current PA~PF (Quasi-bidirectional mode)I TL [3]-650--200μAV DD = 5.5V, V IN < 2.0V
Input Low Voltage PA, PB, PC, PD, PE, PF (TTL input)V IL1-0.3-0.8VV DD = 4.5V
Input Low Voltage PA, PB, PC, PD, PE, PF (TTL input)V IL1-0.3-0.6V DD = 2.5V
Input High Voltage PA, PB, PC, PD, PE, PF (TTL input)V IH12.0-V DD +0.2VV DD = 5.5V
Input High Voltage PA, PB, PC, PD, PE, PF (TTL input)V IH11.5-V DD +0.2V DD = 3.0V
Input Low Voltage PA, PB, PC, PD, PE, PF (Schmitt input)V IL2-0.5-0.35 V DDV
Input High Voltage PA, PB, PC, PD, PE, PF (Schmitt input)V IH20.65 V DD-V DD +0.5V
Hysteresis voltage of PA~PE (Schmitt input)V HY0.2 V DDV
Input Low Voltage XT1 [*2]V IL30-0.8VV DD = 4.5V
Input Low Voltage XT1 [*2]V IL30-0.4V DD = 3.0V
Input High Voltage XT1 [*2]V IH33.5-V DD +0.2VV DD = 5.5V
Input High Voltage XT1 [*2]V IH32.4-V DD +0.2V DD = 3.0V
Negative going threshold (Schmitt input), /RESETV ILS-0.5-0.2 V DDV
Positive going threshold (Schmitt input), /RESETV IHS0.6 V DD-V DD +0.5V
PARAMETERSYMSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSSPECIFICATIONSTEST CONDITIONS
PARAMETERSYMMINTYPMAXUNITTEST CONDITIONS
Source Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional Mode)I SR11-300-370-450μAV DD = 4.5V, V S = 2.4V
Source Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional Mode)I SR12-50-70-90μAV DD = 2.7V, V S = 2.2V
Source Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional Mode)I SR12-40-60-80μAV DD = 2.5V, V S = 2.0V
Source Current PA, PB, PC, PD, PE, PF (Push-pull Mode)I SR21-20-24-28mAV DD = 4.5V, V S = 2.4V
Source Current PA, PB, PC, PD, PE, PF (Push-pull Mode)I SR22-4-6-8mAV DD = 2.7V, V S = 2.2V
Source Current PA, PB, PC, PD, PE, PF (Push-pull Mode)I SR22-3-5-7mAV DD = 2.5V, V S = 2.0V
Sink Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional and Push- pull Mode)I SK1101620mAV DD = 4.5V, V S = 0.45V
Sink Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional and Push- pull Mode)I SK171013mAV DD = 2.7V, V S = 0.45V
Sink Current PA, PB, PC, PD, PE, PF (Quasi-bidirectional and Push- pull Mode)I SK16912mAV DD = 2.5V, V S = 0.45V
Brown-out voltage with BOV_VL [1:0] =00bV BO2.22.12.22.3V
Brown-out voltage with BOV_VL [1:0] =01bV BO2.72.62.72.8V
Brown-out voltage with BOV_VL [1:0] =10bV BO3.83.73.83.9V
Brown-out voltage with BOV_VL [1:0] =11bV BO4.54.44.54.6V
Hysteresis range of BOD voltageV BH30-150mVV DD = 2.5V - 5.5V

NUC123 Absolute Maximum Ratings

SymbolParameterMinMaxUnit
V DD V SSDC Power Supply-0.3+7.0V
V INInput VoltageV SS - 0.3V DD + 0.3V
1/t CLCLOscillator Frequency424MHz
T AOperating Temperature-40+85°C
T STStorage Temperature-55+150°C
I DDMaximum Current into V DD-120mA
I SSMaximum Current out of V SS120mA
I IOMaximum Current sunk by a I/O pin35mA
I IOMaximum Current sourced by a I/O pin35mA
I IOMaximum Current sunk by total I/O pins100mA
I IOMaximum Current sourced by total I/O pins100mA

Note: Exposure to conditions beyond those listed under absolute maximum ratings may adversely affect the lift and reliability of the device.

NUC123 Typical Application

Figure 8-1 Typical Crystal Application Circuit

CRYSTALC1C2R
4 MHz ~ 24 MHz10~20 pF10~20 pFwithout

Figure 8-1 Typical Crystal Application Circuit

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
NUC123SD4AE0Nuvoton Technology CorporationLQFP-64
NUC123SD4AN0Nuvoton Technology CorporationLQFP-64

Other Microcontrollers (MCU)

All Microcontrollers (MCU) datasheetsAll Nuvoton Technology datasheets (6)

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