ATMEGA32HVB-8X3 Atmel, ATMEGA32HVB-8X3 Datasheet - Page 135

• Manufacturer Part Number: ATMEGA32HVB-8X3
• Description: MCU AVR 32KB FLASH 8MHZ 44TSSOP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32HVB-8X3

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI
• Peripherals: POR, WDT
• Number Of I /o: 17
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 25 V
• Data Converters: A/D 7x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TSSOP
• Processor Series: ATMEGA32x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SPI, TWI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRSB200
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 7 Channel
• Package: 44TSSOP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 5|9|12|15|18|24 V
• For Use With: ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24. Battery Protection
24.1
24.2
Table 24-1.
8042B–AVR–06/10
Battery Protection Type
Short-circuit Protection
Discharge Over-current
Protection
Charge Over-current
Protection
Discharge High-current
Protection
Charge High-current
Protection
External Protection Input
Features
Overview
Effect of Battery Protection Types
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•
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•
•
•
•
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The Current Battery Protection circuitry (CBP) monitors the charge and discharge current and
disables C-FET and D-FET if a Short-circuit, Over-current or High-current condition is detected.
There are five different programmable detection levels: Short-circuit Detection Level, Discharge
Over-current Detection Level, Charge Over-current Detection Level, Discharge High-current
Detection Level, Charge High-current Detection Level. There are three different programmable
delays for activating Current Battery Protection: Short-circuit Reaction Time, Over-current Reac-
tion Time and High-current Reaction Time. After Current Battery Protection has been activated,
the application software must re-enable the FETs. The Battery Protection hardware provides a
hold-off time of 1 second before software can re-enable the FETs. This provides safety in case
the application software should unintentionally try to re-enable the FETs too early.
The activation of a protection also issues an interrupt to the CPU. The battery protection inter-
rupts can be individually enabled and disabled by the CPU.
In addition, the module offers an External Protection Input. The activation of the External Protec-
tion Input operates independently of the rest of the battery protection mechanisms. The
activation/deactivation of this protection is instantaneously controlled from the External Protec-
tion Input port, and will not deactivate or affect the other battery protection mechanisms.
The effect of the various battery protection types are given in
Short-circuit Protection
Discharge Over-current Protection
Charge Over-current Protection
Discharge High-current Protection
Charge High-current Protection
External Protection Input
Programmable and Lockable Detection Levels and Reaction Times
Autonomous Operation Independent of CPU
Interrupt Requests
Entry and/or Exit
Entry
Entry
Entry
Entry
Entry
Operational
Operational
Operational
Operational
Operational
Operational
PC-FET
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
C-FET
ATmega16HVB/32HVB
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
D-FET
Table
Cell Balancing
Operational
Operational
Operational
Operational
Operational
Operational
24-1.
FETs
Operational
Operational
Operational
Operational
Operational
Operational
MCU
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