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What is ZSSC1956?

This electronic component, produced by the manufacturer "IDT", performs the same function as "Intelligent Battery Sensor IC".


ZSSC1956 Datasheet PDF - IDT

Part Number ZSSC1956
Description Intelligent Battery Sensor IC
Manufacturers IDT 
Logo IDT Logo 


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Intelligent Battery Sensor IC
ZSSC1956
Datasheet
Brief Description
The ZSSC1956 IC is a dual-channel analog-to-digital
converter (ADC) with an embedded microcontroller
for battery sensing/management in automotive,
industrial, and medical systems.
One of the two input channels measures the battery
current IBAT via the voltage drop at the external
shunt resistor. The second input channel measures
the battery voltage VBAT and the temperature. An
integrated flash memory is provided for customer-
specific software; e.g., dedicated algorithms for
calculating the battery state.
During Sleep Mode (e.g., engine is off), the system
makes periodic measurements to monitor the dis-
charge of the battery. Measurement cycles are
controlled by the software and include various wake-
up conditions. The ZSSC1956 is optimized for ultra-
low power consumption and draws only 100µA or
less in Low-Power Mode.
Features
High-precision 24-bit sigma-delta ADC (18-bit
with no missing codes); sample rate: 1Hz – 16kHz
On-chip voltage reference (5ppm/K typical)
Current channel
IBAT offset error: ≤ 10mA
IBAT resolution: ≤ 1mA
Programmable gain: 4 to 512
Differential input stage input range: ± 300mV
Voltage channel
Input range: 4 to 28.8V
Voltage accuracy: better than ±2mV
Temperature channel
Internal temperature sensor: ± 2°C
External temperature sensor (NTC)
On-chip precision oscillator (1%) and on-chip
low-power oscillator
ARM® Cortex™-M0* microcontroller:
32-bit core, 10MHz to 20MHz
96kB Flash/EE Memory with ECC, 8kB SRAM
LIN2.2 / SAE J2602-2 compliant
Directly connected to 12V battery supply
Normal Mode current consumption: 10mA to 20mA
Low-Power Mode current consumption: ≤ 100µA
© 2016 Integrated Device Technology, Inc.
Benefits
Integrated, precision measurement solution for
accurate prediction of battery state of health
(SOH), state of charge (SOC) or state of function
(SOF)
Flexible wake-up modes allow minimum power
consumption without sacrificing performance
No temperature calibration or external trimming
components required
Optimized code density through small instruction
set architecture Thumb®-2 *
Robust power-on-reset (POR) concept for harsh
automotive environments
Industry’s smallest footprint allows minimal
module size and cost
AEC-Q100 qualified solution
Available Support
Evaluation Kit
Application Notes
Physical Characteristics
Wide operation temperature: -40°C to +125°C
Supply voltage: 4.2 to 18V
Small footprint package: PQFN32 5x5 mm
Basic ZSSC1956 Application Circuit
+ -To Harness
Car Chassis Ground
Rshunt
+-
Battery
f
VBAT
VDDE
INP
INN
Host
LIN
Controller
LIN
Interface
VDDA ZSSC1956
NTH
NTC
NTL VSSA
GPIO
VSSE
5
Optional
GPIO:
SPI, I²C,
UART
Module Ground
* The ARM®, Cortex™, and Thumb®-2 trademarks are owned by ARM, Ltd.
The I2C™ trademark is owned by NXP.
1 January 29, 2016

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ZSSC1956 equivalent
ZSSC1956 Datasheet
4.5.4. Register Overview of GPIO Module .................................................................................................... 143
4.6. 32-Bit Timer ........................................................................................................................................... 145
4.6.1. Timer Mode ..................................................................................................................................... 145
4.6.2. Counter Mode ................................................................................................................................. 145
4.6.3. Timer Module Register Overview.................................................................................................... 146
4.7. LIN Communication Control Logic (ahbLIN).......................................................................................... 148
4.7.1. Functional Description .................................................................................................................... 149
4.7.2. Overview of Registers for LIN ahb Controller ................................................................................. 150
4.8. SPIB8..................................................................................................................................................... 163
4.8.1. Introduction ..................................................................................................................................... 163
4.8.2. SPI Signal Description .................................................................................................................... 164
4.8.3. Functional Description .................................................................................................................... 164
4.8.4. Interrupts and Status Flags............................................................................................................. 166
4.8.5. Overview of Registers for SPIB8 .................................................................................................... 167
4.9. SPI in ZSYSTEM2 ................................................................................................................................. 170
4.9.1. Data Transfers ................................................................................................................................ 170
4.9.2. Interrupts and Status Flags............................................................................................................. 171
4.9.3. Example of SPI Transfer Handling.................................................................................................. 172
4.9.4. Register Overview of SPI2.............................................................................................................. 174
4.10. I²C™ in ZSYSTEM2 .............................................................................................................................. 176
4.10.1. External Signal Lines ...................................................................................................................... 176
4.10.2. The I²C™ Bus ................................................................................................................................. 176
4.10.3. Bus Conflicts ................................................................................................................................... 177
4.10.4. Operating as Slave-Only................................................................................................................. 178
4.10.5. Operating as Single Master ............................................................................................................ 180
4.10.6. Operating as Master on a Multi-Master Bus ................................................................................... 181
4.10.7. Error Conditions .............................................................................................................................. 182
4.10.8. Bus States....................................................................................................................................... 182
4.10.9. Status Description ........................................................................................................................... 184
4.10.10. Register Overview for I²C™ Module ............................................................................................... 195
4.11. USART in ZSYSTEM2........................................................................................................................... 198
4.11.1. External Signal Lines ...................................................................................................................... 198
4.11.2. Asynchronous Mode ....................................................................................................................... 198
4.11.3. Synchronous Mode ......................................................................................................................... 200
4.11.4. Register Overview of USART ......................................................................................................... 202
5 ESD / EMC ................................................................................................................................................... 206
5.1. Electrostatic Discharge.......................................................................................................................... 206
5.2. Power System Ripple Factor ................................................................................................................. 206
© 2016 Integrated Device Technology, Inc.
5
January 29, 2016


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