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ZSSC1856: DescriptionIntelligent Battery Sensor IC; File Size2MB，179 Pages; ManufacturerETC2

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ZSSC1856 Overview

Intelligent Battery Sensor IC

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Data Sheet

Rev. 1.00 / April 2012

ZSSC1856

Intelligent Battery Sensor IC

ZSSC1856

Intelligent Battery Sensor IC

Contents

IC CHARACTERISTICS .................................................................................................................................... 12

1.1 Absolute Maximum Ratings ........................................................................................................................ 12

1.2 Recommended Operating Conditions ........................................................................................................ 12

1.3 Electrical Parameters.................................................................................................................................. 13

1.4 Current Consumption.................................................................................................................................. 19

1.5 Output Pads Drive Strength ........................................................................................................................ 19

2 CIRCUIT DESCRIPTION .................................................................................................................................. 20

2.1 Overview ..................................................................................................................................................... 20

2.2 Digital Block Diagram SBC ......................................................................................................................... 22

2.3 Block Diagram MCU ................................................................................................................................... 23

2.4 System Power States ................................................................................................................................. 24

2.4.1 MCU-ON Power State ......................................................................................................................... 24

2.4.2 MCU-SLP Power State ........................................................................................................................ 25

2.4.3 MCU-DEEP Power State ..................................................................................................................... 25

2.4.4 LP Power State .................................................................................................................................... 25

2.4.5 ULP Power State ................................................................................................................................. 26

2.4.6 OFF Power State ................................................................................................................................. 26

3 Functional Block Descriptions SBC ................................................................................................................... 28

3.1 SPI Communication between the MCU and SBC ...................................................................................... 28

3.1.1 SPI Protocol ......................................................................................................................................... 28

3.2 SBC Register Map ...................................................................................................................................... 30

3.3 SBC Clock and Reset Logic ....................................................................................................................... 33

3.3.1 Clocks .................................................................................................................................................. 33

3.3.2 Trimming the Low-Power Oscillator..................................................................................................... 34

3.3.3 Resets.................................................................................................................................................. 36

3.4 SBC Watchdog Timer ................................................................................................................................. 38

3.5 SBC Sleep Timer ........................................................................................................................................ 41

3.6 SBC Interrupt Controller ............................................................................................................................. 44

3.7 SBC Power Management Unit (PMU) ........................................................................................................ 46

3.7.1 FP State ............................................................................................................................................... 47

3.7.2 LP and ULP States .............................................................................................................................. 48

3.7.3 OFF State ............................................................................................................................................ 55

3.8 SBC ADC Unit ............................................................................................................................................ 57

3.8.1 ADC Clocks ......................................................................................................................................... 58

3.8.2 ADC Data Path .................................................................................................................................... 62

3.8.3 ADC Operating Modes and Result Registers ...................................................................................... 66

3.8.4 ADC Control and Conversion Timing .................................................................................................. 76

3.8.5 Diagnostic Features ............................................................................................................................. 84

3.8.6 Digital Features ................................................................................................................................... 86

3.9 SBC LIN Support Logic............................................................................................................................... 87

3.9.1 TXD Timeout Detection ....................................................................................................................... 88

3.9.2 LIN Short Detection ............................................................................................................................. 88

3.9.3 LIN Testing .......................................................................................................................................... 89

3.10 SBC OTP .................................................................................................................................................... 91

3.11 Miscellaneous Registers ............................................................................................................................. 92

Data Sheet

April 24, 2012

prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

4 of 178

ZSSC1856

Intelligent Battery Sensor IC

3.12 Voltage Regulators ..................................................................................................................................... 94

3.12.1 VBAT ................................................................................................................................................... 94

3.12.2 VDDA ................................................................................................................................................... 94

3.12.3 VDDL ................................................................................................................................................... 94

3.12.4 VDDP ................................................................................................................................................... 95

3.12.5 VDDC ................................................................................................................................................... 95

4 Functional Block Descriptions for the MCU ....................................................................................................... 96

4.1 Introduction ................................................................................................................................................. 96

4.2 Memory Structure ....................................................................................................................................... 96

4.2.1 Memory Map ........................................................................................................................................ 97

4.2.2 Flash Memory ...................................................................................................................................... 98

4.2.3 RAM Memory ..................................................................................................................................... 101

4.2.4 System ROM Table ........................................................................................................................... 102

4.2.5 102

4.2.6 Memory Protection ............................................................................................................................ 103

4.3 System Management Unit ........................................................................................................................ 103

4.3.1 Resets................................................................................................................................................ 103

4.3.2 Clocks ................................................................................................................................................ 104

4.3.3 Power Modes ..................................................................................................................................... 105

4.3.4 Pin Configuration ............................................................................................................................... 106

4.3.5 SMU Module Register Overview ....................................................................................................... 109

4.4 Flash Controller ........................................................................................................................................ 111

4.4.1 Commands ........................................................................................................................................ 112

4.4.2 Register Overview of Flash Controller ............................................................................................... 122

4.5 GPIO ......................................................................................................................................................... 125

4.5.1 Normal Functionality .......................................................................................................................... 125

4.5.2 Trigger Functionality .......................................................................................................................... 126

4.5.3 Interrupt Functionality ........................................................................................................................ 126

4.5.4 Register Overview of GPIO Module .................................................................................................. 126

4.6 32-Bit Timer .............................................................................................................................................. 128

4.6.1 Timer Mode........................................................................................................................................ 128

4.6.2 Counter Mode .................................................................................................................................... 128

4.6.3 Timer Module Register Overview ...................................................................................................... 129

4.7 Software Controlled LIN Controller (SW-LIN) in ZSYSTEM1 ................................................................... 130

4.7.1 The Inactivity Timer ........................................................................................................................... 131

4.7.2 The Break-/Sync-Field Detector ........................................................................................................ 131

4.7.3 The Data Unit..................................................................................................................................... 132

4.7.4 General Notes for Usage ................................................................................................................... 135

4.7.5 Register Overview of SW-LIN Controller ........................................................................................... 136

4.8 SPI ............................................................................................................................................................ 139

4.8.1 Data Transfers ................................................................................................................................... 139

4.8.2 Interrupts and Status Flags ............................................................................................................... 141

4.8.3 Example Handling ............................................................................................................................. 141

4.8.4 Register Overview of Master SPIs..................................................................................................... 143

4.9 I²C™ in ZSYSTEM2.................................................................................................................................. 145

4.9.1 External Signal Lines ......................................................................................................................... 145

Data Sheet

April 24, 2012

prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

5 of 178

ZSSC1856 Related Products

	ZSSC1856	ZSSC1856CA6R
Description	Intelligent Battery Sensor IC	Intelligent Battery Sensor IC

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