Data Sheet

NUC123
May 3, 2017 Page 6 of 99 Rev.2.04
NUC123 SERIES DATASHEET
List of Figures
Figure 4-1 NuMicro
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NUC123 Series Selection Code ................................................................... 14
Figure 4-2 NuMicro
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NUC123SxxANx LQFP 64-pin Diagram ....................................................... 16
Figure 4-3 NuMicro
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NUC123LxxANx LQFP 48-pin Diagram ....................................................... 17
Figure 4-4 NuMicro
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NUC123ZxxANx QFN 33-pin Diagram ......................................................... 18
Figure 4-5 NuMicro
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NUC123SxxAEx LQFP 64-pin Diagram ....................................................... 19
Figure 4-6 NuMicro
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NUC123LxxAEx LQFP 48-pin Diagram ....................................................... 20
Figure 4-7 NuMicro
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NUC123ZxxAEx QFN 33-pin Diagram ......................................................... 21
Figure 5-1 NuMicro
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NUC123 Block Diagram ............................................................................... 27
Figure 6-1 Functional Controller Diagram ...................................................................................... 28
Figure 6-2 System Reset Resources ............................................................................................. 31
Figure 6-3 nRESET Reset Waveform ............................................................................................ 33
Figure 6-4 Power-on Reset (POR) Waveform ............................................................................... 34
Figure 6-5 Low Voltage Reset Waveform ...................................................................................... 34
Figure 6-6 Brown-Out Detector Waveform .................................................................................... 35
Figure 6-7 Power Mode State Machine ......................................................................................... 36
Figure 6-8 NuMicro
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NUC123 Power Distribution Diagram ........................................................... 39
Figure 6-9 Clock Generator Global View Diagram ......................................................................... 48
Figure 6-10 Clock Generator Global View Diagram ....................................................................... 49
Figure 6-11 System Clock Block Diagram ..................................................................................... 50
Figure 6-12 SysTick Clock Control Block Diagram ........................................................................ 50
Figure 6-13 Clock Source of Frequency Divider ............................................................................ 51
Figure 6-14 Block Diagram of Frequency Divider .......................................................................... 51
Figure 7-1 Typical Crystal Application Circuit ................................................................................ 71
Figure 7-2 SPI Master Dynamic Characteristics Timing ................................................................ 78
Figure 7-3 SPI Slave Dynamic Characteristics Timing .................................................................. 79
Figure 8-1 Typical Crystal Application Circuit ................................................................................ 85
Figure 8-2 SPI Master Dynamic Characteristics timing ................................................................. 93
Figure 8-3 SPI Slave Dynamic Characteristics Timing .................................................................. 94