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PDF OZ9313 Data sheet ( Hoja de datos )
| Número de pieza | OZ9313 | |
| Descripción | High-High Accuracy Battery (Gas) Gauge | |
| Fabricantes | O2Micro | |
| Logotipo |  |
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OZ9313
High-High Accuracy Battery (Gas) Gauge for High
Power Batteries
FEATURES
• Integrated 8-bit microcontroller with high
performance and low power consumption
• Integrated, highly accurate ADC works with a
variety of BMU ICs, including::
o OZ890 +OZ9313: 5~13 Cells
o OZ8920+OZ9313: 5~ 8 Cells
o OZ8930+OZ9313: 3~ 6 Cells
o OZ8940+OZ9313: 6~12 Cells
o Supported Stacked Protection ICs + OZ9313
• Smart Battery Specification (SBS) v 1.1
compatible
• Compliant with JEITA safety guidelines
• Measures charge/discharge current with a
dedicated 16-bit ADC:
o 0.27 nVhr resolution
o Automatic On-line Calibration to improve
accuracy
• Monitors individual cell voltages, terminal voltage
and external temperature from BMU (Battery
Management Unit) chips
• Integrated internal temperature sensor
• Programmed to scan BMU protections that
include:
o Over voltage Protection
o Under voltage Protection
o Over current Protection
o Short circuit Protection
o Over temperature Protection
o Under temperature Protection
• Embedded 64 k bytes flash and 1 k bytes SRAM
to support variety of battery characteristics in
high power application
• Integrated 8-bit PWM with 2 bit pre-scaler and
multi-GPIOs (GPIO0~GPIO9) and 2 GPO
(GPIO10, GPIO11)
• Integrated 1.8V voltage regulator (LDO18)
• Power Modes: Full and Sleep
• Low sleep mode current: less than 10 µA (typ.)
• TSSOP30 Package with 0.50 mm pitch
APPLICATIONS
• Electric Bicycles
• Electric Motorcycles
• Power Tools
• Backup Battery Packs
GENERAL DESCRIPTION
OZ9313 is a highly accurate battery (gas) gauge
designed to work with high power Battery
Management Units (BMUs), specifically O2Micro’s
industry leading OZ890, OZ8920, OZ8930 and
OZ8940.
OZ9313 directly measures charge current and
discharge current with an integrated high-accuracy
and low-power sigma-delta ADC. Furthermore,
OZ9313 is programmed to constantly scan individual
cell voltages, the terminal voltage of the battery pack
and external temperature in order to continually
update SOC (State of Charge) and SOH (State of
Health) of a high power battery pack.
With O2Micro’s innovative Battery Gauge Software
(BGS) firmware, OZ9313 automatically self-calibrates
without waiting to complete a charge/discharge cycle.
Moreover, this automatic calibration successfully
increases the reliability and accuracy of a variety of
high power battery packs.
For safety reasons, BMUs invoke their own hardware
based protection mechanisms and prohibit OZ9313
from triggering protection except what is specifically
related to the gas gauge function. This is illustrated in
the table shown below:
BMU
chip
OZ890
OZ8920
OZ8930
OZ8940
Trigger
protection
OZ890
OZ8920
OZ8930
OZ8940
Release
protection
OZ9313
OZ8920
OZ8930
OZ8940
Gas Gauge
Trigger/Release
protection
OZ9313
OZ9313
OZ9313
OZ9313
OZ9313 monitors cell voltage and sends cell
balancing commands to the BMU. Cell balancing
increases the overall life of a battery pack.
OZ9313 is compliant with SBS Data Specification
v1.1 (See section on SBS v1.1 Functions for detailed
information) and can be easily modified to support
additional, optional manufacturer functions, protocol
extensions, and gauge functionality.
ORDERING INFORMATION
Part Number Temp Range
OZ9313RN -40oC to 85oC
Package
TSSOP30
04/27/2012
OZ9313_DS_v1.1
Copyright© 2005-2012 by O2Micro
All Rights Reserved
U.S. Patent #6,744,394; 7,161,520; 7,196,652; 7,095,211 and others pending
Page 1
CONFIDENTIAL
1 page  
Application Schematic (e.g. OZ8920+OZ9313)
OZ9313
CONFIDENTIAL
OZ9313_DS_v1.1
Page 5
5 Page 
OZ9313
INTERNAL REGISTER INFORMATION
OZ9313 has two sets of internal registers:
• Internal Control Register ---- for I/O ports, coulomb counting, and flash memory control
• SBS v1.1 function register ---- for SBS v1.1 function support
CONTROL REGISTER MAP
OZ9313 has 128 addressable Control Registers. These registers control coulomb counting ADC, and SMBus
communication, etc. OZ9313’s internal microcontroller can directly access these Control Registers.
After reset, bits in Control Register are cleared to zeroes except as otherwise noted.
Control Register
Address Range
Function Description
00h – 03h
Reserved
04h Main Clock Control of CPU
05h Sleep mode control
06h ~ 09h
Reserved
0Ah ~ 13h
SMbus control
14h ~ 19h
GPIO0 ~ GPIO9 control
1Ah ~ 24h
Watchdog and timer control
25h GPIO10 ~ GPIO11 control
26h ~ 2Dh
Reserved
2Eh ~ 30h
Current ADC control
31h ~ 3Eh
Current detection and coulomb counting
3Fh ~ 50h
Reserved
51h ~59h
SMbus control
5Ah Flash memory control
5Bh ~ 7Fh
Reserved
Note: The registers in shadow are fully controlled by Battery Gauge Software (BGS), not accessible to the end user
Detailed Internal Control Register information
Addr.
00h ~ 03h
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Reserved
Bit 2
Bit 1
Bit 0
Register 00h ~ 03h : Reserved
Addr.
04h
05h
06h ~ 09h
Bit 7
Bit 6
Reserved
Bit 5
Bit 4
Bit 3
Ultra_lowerpower_en
Reserved
Reserved
Bit 2
Bit 1
Bit 0
Main Clock control
Sleep_enable
Register 04h
Bit7 – Bit6 : Reserved
Bit5 – Bit4 : Ultra lower power control of CPU
00, 01, 10: low power mode is disable
11: Enable CPU enter the low power mode
Bit3 – Bit0 : Main clock control
1000: 2MHz
1100: 1MHz
1110: 512KHz
1111: 256KHz
CONFIDENTIAL
OZ9313_DS_v1.1
Page 11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet OZ9313.PDF ] | |
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