ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 185

• 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

8042D–AVR–10/11
• Bit 6 – TWBCIE: TWI Bus Connect/Disconnect Interrupt Enable
When the TWBCIE bit and the I-bit in the Status Register are set, the TWI Bus Connect/Discon-
ne ct In terr upt is e nab le d. Th e corre spon ding inte rrup t is execu ted if a TWI Bus
Connect/Disconnect occurs, that is, when the TWBCIE bit is set.
• Bit 5:3 – Reserved
These bits are reserved in the Atmel ATmega16HVB/32HVB and will always read as zero.
• Bit 2:1 – TWBDT1, TWBDT0: TWI Bus Disconnect Time-out Period
The TWBDT bits decides how long both the TWI data (SDA) and clock (SCL) signals must be
low before generating the TWI Bus Disconnect Interrupt. The different configuration values and
their corresponding time-out periods are shown in
Table 27-8.
• Bit 0 – TWBCIP: TWI Bus Connect/Disconnect Interrupt Polarity
The TWBCIP bit decide if the TWI Bus Connect/Disconnect Interrupt Flag (TWBCIF) should be
set on a Bus Connect or a Bus Disconnect. If TWBCIP is cleared, the TWBCIF flag is set on a
Bus Connect. If TWBCIP is set, the TWBCIF flag is set on a Bus Disconnect.
TWBDT1
0
0
1
1
TW Bus disconnect time-out period.
TWBDT0
0
1
0
1
TWI bus disconnect time-out period
250ms
500ms
1000ms
2000ms
Table
ATmega16HVB/32HVB
27-8.
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