ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 161
ATmega16HVB
Manufacturer Part Number
ATmega16HVB
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega16HVB-8X3
Manufacturer:
LT
Quantity:
51
Part Number:
ATmega16HVB-8X3
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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27.5.5
8042D–AVR–10/11
Control unit
The Control unit monitors the TWI bus and generates responses corresponding to settings in the
TWI Control Register (TWCR). When an event requiring the attention of the application occurs
on the TWI bus, the TWI Interrupt Flag (TWINT) is asserted. In the next clock cycle, the TWI Sta-
tus Register (TWSR) is updated with a status code identifying the event. The TWSR only
contains relevant status information when the TWI interrupt flag is asserted. At all other times,
the TWSR contains a special status code indicating that no relevant status information is avail-
able. As long as the TWINT flag is set, the SCL line is held low. This allows the application
software to complete its tasks before allowing the TWI transmission to continue.
The TWINT flag is set in the following situations:
• After the TWI has transmitted a START/REPEATED START condition
• After the TWI has transmitted SLA+R/W
• After the TWI has transmitted an address byte
• After the TWI has lost arbitration
• After the TWI has been addressed by own slave address or general call
• After the TWI has received a data byte
• After a STOP or REPEATED START has been received while still addressed as a Slave
• When a bus error has occurred due to an illegal START or STOP condition
ATmega16HVB/32HVB
161
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