Basis Chip. ZSSC1751 Datasheet

ZSSC1751 Chip. Datasheet pdf. Equivalent

ZSSC1751 Datasheet
Recommendation ZSSC1751 Datasheet
Part ZSSC1751
Description Data Acquisition System Basis Chip
Feature ZSSC1751; Data Acquisition System Basis Chip ZSSC1750 / ZSSC1751 Datasheet Brief Description The ZSSC1750 an.
Manufacture IDT
Datasheet
Download ZSSC1751 Datasheet




IDT ZSSC1751
Data Acquisition
System Basis Chip
ZSSC1750 / ZSSC1751
Datasheet
Brief Description
The ZSSC1750 and ZSSC1751 are System Basis
Chips (SBCs) with a dual-channel ADC for battery
sensing/management in automotive, industrial, and
medical systems. The ZSSC1750 and ZSSC1751
feature an SPI interface; in addition, the ZSSC1750
has an integrated LIN 2.1 transceiver.
One of the two input channels measures the battery
current IBAT via the voltage drop at the external shunt
resistor. The second channel measures the battery
voltage VBAT and the temperature.
By simultaneously measuring VBAT and IBAT, it is
possible to determine dynamically the internal
resistance of the battery, Rdi, which is correlated
with the state-of-health (SOH) of the battery. By
integrating IBAT, it is possible to determine the state-
of-charge (SOC) and the state-of-function (SOF) of
the battery.
During Sleep Mode, the system makes periodic
measurements to monitor the discharge of the
battery. Measurement cycles are controlled by user
software and include various wake-up conditions.
The ZSSC1750/51 is optimized for ultra-low power
consumption drawing only 60µA or less in this mode.
Features
Two high-precision 24-bit sigma-delta ADCs
(18-bit with no missing codes);
sample rate: 1Hz to 16kHz
On-chip voltage reference (5ppm/K typical)
Current channel
IBAT offset error: ≤ 10mA
IBAT resolution: ≤ 1mA
Programmable gain: 4 to 512
Max. differential input stage input range: ±300mV
Voltage channel
Input range: 4 to 28.8V
Voltage accuracy: ±60ppm FSR* = 1.73mV
Temperature channel
External temperature sensor (NTC)
Factory-calibrated internal temp. sensor: ±2°C
LIN 2.1/SAE J2602-1 transceiver (ZSSC1750 only)
Typical current consumption
Normal Mode: 12mA
Sleep Mode: ≤ 60µA
Benefits
Integrated, precision measurement solution for
accurate prediction of battery state of health
(SOH), state of charge (SOC), or state of
function (SOF)
Robust power-on-reset (POR) concept for harsh
automotive environments
On-chip precision oscillator accuracy: ±1%
On-chip low-power oscillator
Only a few external components needed
Easy communication via SPI interface
Power supply, interrupt, and reset signals for
external microcontroller
Watchdog timer with dedicated oscillator
Industry’s smallest footprint allows minimal
module size and cost
AEC-Q100 qualified solution
Available Support
Evaluation Kit
Application Notes
Physical Characteristics
Operation temperature up to -40°C to +125°C
Supply voltage: 4.2 to 18V
Small footprint package: PQFN36 6x6 mm
* FSR = full-scale range.
Basic ZSSC1750/51 Application Circuit
+ -To Harness
Car Chassis Ground
Rshunt
+-
Battery
VBAT
VDDE
VDDP 3.3V, <30mA
LIN-I/F
LIN (ZSSC1750 )
INP
INN
VDDA
RX
TX
IRQN
MCU_RSTN
MCU_CLK
NTH
NTC ZSSC1750/51
NTL SPI
VSSA VSSE
VDD
IRQ Interface
RST
to Host
CLK (opt.) (e.g. CAN)
I/F
µC
SPI
VSS
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016



IDT ZSSC1751
Data Acquisition
System Basis Chip
ZSSC1750 / ZSSC1751
Datasheet
ZSSC1750/51 Block Diagram
Applications
Intelligent battery monitoring in
automotive applications; start/stop
systems, e-bikes, scooters, and e-carts
Battery monitoring in Industrial, medical
and photovoltaic applications;
High precision data acquisition
VBAT
Common
Ground
SHUNT
VDDE
VDDA
INP
INN
VBAT
LP_REG
ZSSC1750/51 Analog Front End SBC
VDDP_REG
BG_REF
WD_TIMER
VDDA_REG VDDC_REG
PGA
SD_ADC
SBC_PMU
DIGITAL
FILTER
GP_TIMER
CONFIG
REGISTER
IRQ_CTRL
OSC
RESULT
REGISTER
+–
BATTERY
LIN
RREF
NTH
NTC
MUX
SD_ADC
NTL
LIN LIN_PHYS (1)
1) Available in ZSSC1750 only
DIGITAL
FILTER
CALIBRATION
DATA PATH
SPI
Analog
Block
Digital
Block
VDDP
VDDC
SLEEPN
WDT_DIS
MCU_CLK
MCU_RSTN
IRQN
CSN
SCLK
MISO
MOSI
RXD
TXD
ZSSC1750 Typical Application Circuit
BAT+
Rbat
100Ω
Cbat
100nF
Cddc
2.2µF
Cddp
2.2µF
Cddl
10nF
Clin
220pF
LIN
Chassis
GND
BAT-
Ddde Rdde Cdde1 Cdde2
BAS21 2.2Ω
10µF 100nF
Rinp
Rshunt 220Ω
100µΩ Rinn
220Ω
Cinp
10nF
Cin
100nF
Cinn
10nF
Cdda
470nF
Rref
75kΩ
Rntc
10kΩ
Cntc
470pF
VBAT
1
VDDE
VSSE
VSSA
INP
INN
VSSA
VDDA
NTH
NTL
RXD
ZSSC1750
LIN
VSSLIN
TESTH
TESTL
WDT_DIS
MCU_CLK
STO
TCK
TMS
TRSTN
VSSN
n.c.
n.c.
wdt_dis
mcu_clk
sto
tck
tms
trstn
rxd txd mcu_rstn irqn csn sclk mosi miso
ZSSC1751 Typical Application Circuit
BAT+
Rbat
100Ω
Cbat
100nF
Cddc
2.2µF
Cddp
2.2µF
Cddl
10nF
Chassis
GND
BAT-
Ddde Rdde Cdde1 Cdde2
BAS21 2.2Ω
10µF 100nF
Rinp
Rshunt 220Ω
100µΩ Rinn
220Ω
Cinp
10nF
Cin
100nF
Cinn
10nF
Cdda
470nF
Rref
75kΩ
Rntc
10kΩ
Cntc
470pF
VBAT
1
VDDE
VSSE
VSSA
INP
ZSSC1751
INN
VSSA
VDDA
NTH
NTL
NC NC
NC
VSS
TESTH
TESTL
WDT_DIS
MCU_CLK
STO
TCK
TMS
TRSTN
VSSN
VDDP
open
mcu_rstn irqn csn sclk mosi miso
n.c.
n.c.
wdt_dis
mcu_clk
sto
tck
tms
trstn
Ordering Information
Product Sales Code Description
Package
ZSSC1750EA3R
ZSSC1751EA3R
ZSSC1750KIT V1.1
ZSSC1750 Battery Sensing SBC—Temperature Range: -40°C to 125°C
PQFN36 6x6 mm, reel
ZSSC1751 Battery Sensing SBC—Temperature Range: -40°C to 125°C
PQFN36 6x6 mm, reel
ZSSC1750/51 Evaluation Kit: modular evaluation and development board for ZSSC1750/51, 3 IC samples, and
USB cable (software and documentation can be downloaded from www.IDT.com)
Corporate Headquarters
6024 Silver Creek Valley Road
San Jose, CA 95138
www.IDT.com
Sales
1-800-345-7015 or 408-284-8200
Fax: 408-284-2775
www.IDT.com/go/sales
Tech Support
www.IDT.com/go/support
DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance
specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The
information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an
implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property
rights of IDT or any third parties.
IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be
reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.
Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the
property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary. All contents of this document are copyright of Integrated
Device Technology, Inc. All rights reserved.
© 2016 Integrated Device Technology, Inc.
2
April 20, 2016



IDT ZSSC1751
ZSSC1750 / ZSSC1751 Datasheet
Contents
1 IC Characteristics ............................................................................................................................................. 8
1.1 Absolute Maximum Ratings....................................................................................................................... 8
1.2 Recommended Operating Conditions ....................................................................................................... 9
1.3 Electrical Parameters .............................................................................................................................. 10
1.4 Timing Parameters .................................................................................................................................. 18
2 Circuit Description .......................................................................................................................................... 21
2.1 Overview.................................................................................................................................................. 21
2.2 SBC-to-MCU Interface Pins..................................................................................................................... 22
2.2.1 Digital I/Os ........................................................................................................................................ 23
2.2.2 External Microcontroller (MCU) Supply Pins .................................................................................... 23
2.2.3 SLEEPN Power State Indicator Pin.................................................................................................. 23
2.3 System Power States .............................................................................................................................. 24
2.3.1 Full Power State (FP) ....................................................................................................................... 24
2.3.2 Low Power State (LP) ...................................................................................................................... 24
2.3.3 Ultra Low Power State (ULP) ........................................................................................................... 25
2.3.4 OFF Power State.............................................................................................................................. 25
3 ZSSC1750/51 Functional Block Descriptions ................................................................................................ 26
3.1 Serial Peripheral Interface (SPI Slave).................................................................................................... 26
3.1.1 SPI Protocol...................................................................................................................................... 26
3.2 SBC Register Map (RESULT REGISTER Block and CONFIG REGISTER Block) ................................ 28
3.3 ZSSC1750/51 Clock and Reset Logic ..................................................................................................... 33
3.3.1 Clock Sources .................................................................................................................................. 33
3.3.2 Trimming the Low-Power Oscillator ................................................................................................. 34
3.3.3 Clock Trimming and Configuration Registers................................................................................... 35
3.3.4 Resets .............................................................................................................................................. 37
3.4 SBC Watchdog Timer (WD_TIMER Block) ............................................................................................. 39
3.4.1 Watchdog Registers ......................................................................................................................... 41
3.5 SBC Sleep Timer (GP_TIMER Block) ..................................................................................................... 43
3.5.1 Sleep Timer Registers ...................................................................................................................... 44
3.6 SBC Interrupt Controller (IRQ_CTRL Block) ........................................................................................... 45
3.7 SBC Power Management Unit (SBC_PMU Block).................................................................................. 49
3.7.1 FP State............................................................................................................................................ 50
3.7.2 LP and ULP States ........................................................................................................................... 51
3.7.3 OFF State ......................................................................................................................................... 60
3.7.4 Registers for Power Configuration and the Discreet Current Measurement Count ......................... 61
3.8 ZSSC1750/51 ADC Unit .......................................................................................................................... 63
3.8.1 ADC Clocks ...................................................................................................................................... 64
3.8.2 ADC Data Path ................................................................................................................................. 69
3.8.3 ADC Operating Modes and Result Registers................................................................................... 74
3.8.4 ADC Control and Conversion Timing ............................................................................................... 86
© 2016 Integrated Device Technology, Inc.
3
April 20, 2016





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)