ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 135
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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8042D–AVR–10/11
The user must disable the External Protection Input in the BPCR register before the port can be
used as a normal port.
Also during the reset sequence, the External Protection Input may disable the FETs. Conse-
quently, if the External Protection feature is not used and DUVR mode is enabled in reset, the
External Protection input must be held low until disabled by SW.
It is recommended that the external interrupt on the External Protection Input port is configured
to ‘any edge’ to generate an interrupt to the microcontroller when using this feature, indicating
that the FET protection status has changed. By reading the pin register, the External Protection
status can be determined. If the pin register is set, it means that External Protection is trigged
and the FET control signals in FCSR (CFE, DFE and DUVRD) are overridden and the FETs are
disabled. In the opposite case, External Protection violation is not present.
To ensure a safe exit from the External Protection Input condition, the FETs and DUVR mode
should be disabled by SW when an External Protection condition is detected. This enables soft-
ware to completely control when the FETs are switched ON again.
Short pulses on the EXTPROT pin, for instance caused by temporary high voltages on the BATT
pin when connecting a charger, may trigger the External Protection Input (refer to
cuit” on page
re-enabled automatically once the External Protection condition disappears.
Figure 24-1. External protection input example.
INT0
FC SR [CFE]
FC SR [DFE]
PC 0
O C
O D
220). However if the SW does not take any action, the C-FET and D-FET will be
ATmega16HVB/32HVB
”Operating cir-
135
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