ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 43

• 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

11.2.1
8042D–AVR–10/11
Power-on reset and charger connect
Figure 11-1. Reset logic.
The Voltage Regulator will not start up until the Charger Detect module has enabled it. Before
this happens the chip will be in Power-off mode and only the Charger Detect module is enabled.
In order for the Charger Detect module to enable the Voltage Regulator, the voltage at the BATT
pin must exceed the Power-On Threshold Voltage, V
exceeds V
Delay Counter times out, the chip will enter Active mode. See
details on Charger Detect, see
RESET
/dW
POT
V
REG
, the Voltage Regulator starts up and the chip enters RESET mode. When the
Pull-up Resistor
FILTER
SPIKE
V
CC
”Charger detect” on page
Ultra Low Power
RC Oscillator
Reset Circuit
SUT[1:0]
debugWIRE
Watchdog
Brown-out
Power-on
Detection
Generator
Circuit
Timer
Reset
Clock
POR
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
ATmega16HVB/32HVB
POT
COUNTER RESET
126.
. When the voltage at the BATT pin
TIMEOUT
Figure 10-1 on page
36. For
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