ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 122

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

122
ATmega8HVA/16HVA
Figure 22-3. Voltage Regulator block diagram, Linear mode only
Figure 22-4. Voltage regulator operation and reset signals as a function of rising and falling
Regulator operation
BATT
VFET
Power-on Reset
DUVR mode
Chip Reset
NC: No Connect
V
3,3V
10V
DUVR
CHARGER
5V
DETECT
DRIVER
VREF
NFET
CLK
input voltage for 2-cell operation.
Charger is connected
disabled
4/8/16/32/64/128/256/512 ms
VIN
VREF
CLK
STARTED
ENABLE
DUALC_MODE
Regulator
Voltage
T
POT
VIN
VREF
ENABLE
STARTED
DCDC-CTRL
DUALC_MODE
STEP_UP_EN
LIN_EN
SW controlled
linear operation
V
REG
V
IN
VIN
VREF
CLK
ENABLE
VIN
VREF
ENABLE
STEP-UP-REG VOUT
NC
LIN-REG
Disabled
NC NC
VOUT
VREG
disabled
CREG
8024A–AVR–04/08