CP2400 Ver la hoja de datos (PDF) - Silicon Laboratories
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CP2400 Datasheet PDF : 110 Pages
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CP2400/1/2/3
1. System Overview .................................................................................................................5
1.1. Typical Connection Diagram ..........................................................................................9
2. Absolute Maximum Ratings.............................................................................................. 11
3. Electrical Characteristics .................................................................................................. 12
4. Pinout and Package Definitions ....................................................................................... 17
5. Clocking Options ...............................................................................................................32
6. Internal Registers and Memory ........................................................................................ 34
6.1. Accessing Internal Registers and RAM over the SPI Interface .................................... 35
6.2. Accessing Internal Registers and RAM over the SMBus Interface .............................. 36
6.3. Internal Registers .........................................................................................................37
7. Interrupt Sources ...............................................................................................................40
8. Reset Sources .................................................................................................................... 47
8.1. Reset Initialization ........................................................................................................47
8.2. Power-On Reset........................................................................................................... 48
8.3. External Pin Reset........................................................................................................48
9. Power Modes......................................................................................................................49
9.1. Normal Mode................................................................................................................ 50
9.2. RAM Preservation Mode .............................................................................................. 50
9.3. Ultra Low Power LCD Mode......................................................................................... 51
9.4. Ultra Low Power SmaRTClock Mode........................................................................... 52
9.5. Shutdown Mode ........................................................................................................... 53
9.6. Determining the ULP Mode Wake-Up Source..............................................................55
9.7. Port Match Functionality in the Ultra Low Power Modes.............................................. 56
9.8. Disabling Secondary Device Functions........................................................................ 58
10. Port Input/Output ...............................................................................................................60
10.1.Port I/O Modes of Operation ........................................................................................ 61
10.2.Assigning Port I/O Pins to Analog and Digital Functions ............................................. 62
10.3.Active Mode Port Match............................................................................................... 63
10.4.Registers for Accessing and Configuring Port I/O .......................................................65
11. SmaRTClock (Real Time Clock)........................................................................................ 69
11.1.SmaRTClock Interface.................................................................................................70
11.2.SmaRTClock Clocking Sources...................................................................................74
11.3.SmaRTClock Timer and Alarm Function .....................................................................77
12. LCD Segment Driver ..........................................................................................................83
12.1.Initializing the LCD Segment Driver ............................................................................. 83
12.2.LCD Configuration ....................................................................................................... 84
12.3.LCD Bias Generation and Contrast Adjustment .......................................................... 85
12.4.LCD Timing Generation ............................................................................................... 87
12.5.Mapping ULP Memory to LCD Pins ............................................................................. 90
12.6.Blinking LCD Segments ............................................................................................... 91
13. Timers ................................................................................................................................. 92
13.1.Timer 0 ....................................................................................................................... 92
13.2.Timer 1 ....................................................................................................................... 96
14. Serial Peripheral Interface (SPI) ..................................................................................... 101
14.1.Signal Descriptions .................................................................................................... 101
14.2.Serial Clock Timing .................................................................................................... 102
Rev. 1.0
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