EM9304
Table of Contents
List of Tables..........................................................................................................................................................................4
List of Figures.........................................................................................................................................................................5
1 Overview.....................................................................................................................................................................................6
1.1 Introduction.......................................................................................................................................................................6
1.2 Chip Architecture..............................................................................................................................................................7
1.3 RF Description..................................................................................................................................................................8
1.4 Power Management Description ......................................................................................................................................9
1.5 Operating Modes............................................................................................................................................................11
1.6 Pin Description...............................................................................................................................................................11
1.7 GPIO Configuration........................................................................................................................................................11
1.8 QFN Reference Schematics and External Components ................................................................................................12
1.9 WLCSP Reference Schematics and External Components ...........................................................................................14
1.10 Related Documents......................................................................................................................................................15
2 Electrical Specifications..........................................................................................................................................................16
2.1 Absolute Maximum Ratings............................................................................................................................................16
2.2 Handling Procedures......................................................................................................................................................16
2.3 General Operating Conditions........................................................................................................................................16
2.4 Electrical Characteristics................................................................................................................................................17
2.5 DC Characteristics .........................................................................................................................................................17
2.5.1 DCDC Step-Down Configuration.........................................................................................................................17
2.5.2 DCDC Step-Up Configuration.............................................................................................................................17
2.5.3 DCDC Off Configuration and External DCDC Configuration...............................................................................18
2.6 Digital Pin Characteristics ..............................................................................................................................................18
2.6.1 GPIO Pin Characteristics....................................................................................................................................18
2.6.2 I2C Timing .........................................................................................................................................................19
2.6.3 SPI Timing .........................................................................................................................................................19
2.6.4 Enable Pin Characteristics..................................................................................................................................21
2.7 Power Management Characteristics...............................................................................................................................21
2.7.1 Low Frequency Crystal Oscillator Specifications ................................................................................................21
2.7.2 Timing Characteristics ........................................................................................................................................21
2.8 RF Characteristics..........................................................................................................................................................22
2.8.1 General RF Characteristics.................................................................................................................................22
2.8.2 High Frequency Crystal Oscillator Specifications................................................................................................22
2.8.3 Transmitter Characteristics.................................................................................................................................22
2.8.4 Receiver Characteristics.....................................................................................................................................23
3 Functional Description............................................................................................................................................................24
3.1 Block Diagram................................................................................................................................................................24
3.1.1 Digital Processing ...............................................................................................................................................25
3.1.2 CPU
.........................................................................................................................................................25
3.1.3 Memories .........................................................................................................................................................26
3.1.4 Peripherals .........................................................................................................................................................27
3.1.5 Applications and Patch Loading..........................................................................................................................27
3.1.6 Security
.........................................................................................................................................................28
3.2 Peripherals.....................................................................................................................................................................28
3.2.1 I2C Master .........................................................................................................................................................28
3.2.2 SPI Master .........................................................................................................................................................29
3.2.3 UART
.........................................................................................................................................................30
3.2.4 SPI Slave .........................................................................................................................................................30
3.2.5 GPIO
3.2.6 Timers
.........................................................................................................................................................32
.........................................................................................................................................................34
3.3 Power Management .......................................................................................................................................................34
3.3.1 Supply Domains..................................................................................................................................................35
3.3.2 Logic Power Domains.........................................................................................................................................35
3.3.3 Supply Monitoring ...............................................................................................................................................36
3.3.4 Chip Disable........................................................................................................................................................36
3.3.5 Reset Structure...................................................................................................................................................36
3.4 Operating Modes............................................................................................................................................................37
3.4.1 Mode Descriptions ..............................................................................................................................................37
3.4.2 Mode Transitions ................................................................................................................................................38
3.5 Clock Structure...............................................................................................................................................................39
3.5.1 LF XTAL Modes..................................................................................................................................................39
3.5.2 LF Clock Calibration............................................................................................................................................39
4 Ordering information...............................................................................................................................................................40
4.1 Ordering information.......................................................................................................................................................40
4.2 Pin List .........................................................................................................................................................................40
4.3 QFN Package Marking ..................................................................................................................................................41
4.4 QFN Package Information..............................................................................................................................................41
4.5 WLCSP Package Information.........................................................................................................................................42
3
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9304-DS, Version 4.1, 30-Oct-17
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