ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 126

• 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

22. Charger detect
22.1
22.2
126
Features
Overview
ATmega16HVB/32HVB
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The Charger Detect module has two main functions:
• Control the device operating state (power-off or normal operation)
• Detect when a charger is connected/disconnected
Figure 22-1
Figure 22-1. Charger Detect block diagram.
Operates directly from VFET supply
Detects when a charger is connected or disconnected by monitoring the BATT pin
Controls the operation state of the device by automatically enable/disable the internal voltage
regulator
Automatically disabled when discharge FET is ON
Interrupt wake-up from all sleep modes
shows a block diagram of the Charger Detect module.
(power-off)
DFET_EN
SLEEP
BLOD
w/Power-on Reset
Charger Detect
Charger Detect
Interrupt Logic
8-BIT DATABUS
VFET
CHARGER_PRESENT
BATT
POWER_OFF
POR
IRQ
+
-
8042D–AVR–10/11