May 17, 2005
Document #: 38-12010 CY Rev. *C
11
Figure 1: Block Diagram ............................................................................................................................ 13
Figure 2: CY8C25122 ................................................................................................................................ 15
Figure 3: CY8C26233 ................................................................................................................................ 15
Figure 4: 26443 PDIP/SOIC/SSOP ........................................................................................................... 16
Figure 5: 26643 TQFP ............................................................................................................................... 17
Figure 6: 26643 PDIP/SSOP ..................................................................................................................... 18
Figure 7: General Purpose I/O Pins .......................................................................................................... 30
Figure 8: External Crystal Oscillator Connections ..................................................................................... 37
Figure 9: PSoC MCU Clock Tree of Signals .............................................................................................. 39
Figure 10: Interrupts Overview .................................................................................................................. 43
Figure 11: GPIO Interrupt Enable Diagram ...............................................................................................47
Figure 12: Digital Basic and Digital Communications PSoC Blocks .......................................................... 49
Figure 13: Polynomial LFSR ...................................................................................................................... 65
Figure 14: Polynomial PRS ....................................................................................................................... 65
Figure 15: SPI Waveforms ........................................................................................................................ 68
Figure 16: Array of Analog PSoC Blocks ................................................................................................... 72
Figure 17: Analog Reference Control Schematic ...................................................................................... 73
Figure 18: NMux Connections ...................................................................................................................78
Figure 19: PMux Connections ...................................................................................................................79
Figure 20: RBotMux Connections .............................................................................................................. 79
Figure 21: Analog Continuous Time PSoC Blocks .................................................................................... 81
Figure 22: Analog Switch Cap Type A PSoC Blocks ................................................................................. 86
Figure 23: AMux Connections ...................................................................................................................87
Figure 24: CMux Connections ...................................................................................................................87
Figure 25: BMuxSCA/SCB Connections ................................................................................................... 88
Figure 26: Analog Switch Cap Type B PSoC Blocks ................................................................................. 95
Figure 27: Analog Input Muxing ............................................................................................................... 103
Figure 28: Analog Output Buffers ............................................................................................................ 105
Figure 29: Multiply/Accumulate Block Diagram .......................................................................................110
Figure 30: Decimator Coefficients ........................................................................................................... 112
Figure 31: Execution Reset ..................................................................................................................... 115
Figure 32: Three Sleep States .................................................................................................................117
Figure 33: Switch Mode Pump ................................................................................................................ 119
Figure 34: Programming Wave Forms ....................................................................................................124
Figure 35: PSoC Designer Functional Flow ............................................................................................ 125
Figure 36: CY8C25xxx/CY8C26xxx Voltage Frequency Graph .............................................................. 127
Figure 37: 44-Lead Thin Plastic Quad Flat Pack A44 .............................................................................143
Figure 38: 20-Pin Shrunk Small Outline Package O20 ........................................................................... 144
Figure 39: 28-Lead (210-Mil) Shrunk Small Outline Package O28 ......................................................... 145
Figure 40: 48-Lead Shrunk Small Outline Package O48 ......................................................................... 145
Figure 41: 20-Lead (300-Mil) Molded DIP P5 .......................................................................................... 146
Figure 42: 28-Lead (300-Mil) Molded DIP P21 ........................................................................................ 146
Figure 43: 48-Lead (600-Mil) Molded DIP P25 ........................................................................................ 147
Figure 44: 20-Lead (300-Mil) Molded SOIC S5 .......................................................................................147
Figure 45: 28-Lead (300-Mil) Molded SOIC S21 ..................................................................................... 148
List of Figures
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