ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 123

• Manufacturer Part Number: ATAVRSB202
• Description: KIT BATT MGMT FOR ATMEGA32HVB
• Manufacturer: Atmel

Specifications of ATAVRSB202

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21. Voltage Reference and Temperature Sensor
21.1
21.2
8042B–AVR–06/10
Features
Overview
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ATmega16HVB/32HVB features a highly accurate low power On-chip Bandgap Reference Volt-
age, VREF of 1.100V. This reference voltage is used as reference for the On-chip Voltage
Regulator, the Brown-out Detector, the internal Cell Balancing, the Battery Protection, the V-
ADC and the CC-ADC.
Figure 21-1. Bandgap Reference Voltage
In addition to the Bandgap Reference Voltage, the Voltage Reference includes a Calibration Unit
that enables run time calibration of the Reference Voltage, an On-chip temperature sensor for
monitoring the die temperature, and a Bandgap Short Detector to detect short circuit conditions
on the external VREF pin for highest safety.
Accurate Voltage Reference of 1.100V
Voltage Reference Calibration Interface
Internal Temperature Sensor
External Decoupling for Optimum Noise Performance
Short Circuit Detection on the External Decoupling pin
Low Power Consumption
VPTAT
BG Control and Status
IRQ
Figure 21-1
w/ temperature sensor
BG Short Detector
Bangap Reference
shows an overview of the On-chip voltage reference.
8-bit databus
1.1V
BG Calibration
ATmega16HVB/32HVB
Buffer
BG
VREF
VREFGND
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