ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 145

• Manufacturer Part Number: ATmega16HVB
• Manufacturer: Atmel Corporation

Specifications of ATmega16HVB

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 17
• Ext Interrupts: 15
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

25. FET driver
25.1
25.2
8042D–AVR–10/11
Features
Overview
•
•
•
The Atmel ATmega16HVB/32HVB integrates an N-channel FET driver for turning on and off
external high-side Charge and Discharge FETs in Li-ion battery packs. The FET driver is
designed for outputting a high voltage gate overdrive of typically 13V during normal operation.
Figure 25-1. Simplified block diagram.
In normal operation FET is controlled by software. SW can enable and disable the Charge FET
and the Discharge FET by writing to the FET Control and Status Register (FCSR).
High side N-channel FET driver for controlling charge and discharge FETs in Li-ion battery
application
Optional deep under-voltage recovery mode allowing normal operation while charging deeply
discharged battery cells from 0-volt without an external pre-charge FET
Optional pre-charge FET mode that allows chargers without pre-charge functionality to charge a
deeply discharged battery from 0-volt
Battery
Li-Ion
Cells
Pack
2-4
RPVT
PVT
CHARGER
PC5
DETECT
QPF
ATmega16HVB/32HVB
RPF
RPC
RCF
OC
OPTIONAL
FET DRIVER
QCF
FET CONTROL
VFET
ATmega16HVB/32HVB
RDF
OD
QDF
BATT
RBATT
+
-
Charger
Device
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