ATMEGA16HVA-4CKU Atmel, ATMEGA16HVA-4CKU Datasheet - Page 44
![MCU AVR 16K FLASH 4MHZ 36-LGA](/photos/12/32/123221/36ck1-lga_sml.jpg)
ATMEGA16HVA-4CKU
Manufacturer Part Number
ATMEGA16HVA-4CKU
Description
MCU AVR 16K FLASH 4MHZ 36-LGA
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16HVA-4CKU.pdf
(196 pages)
Specifications of ATMEGA16HVA-4CKU
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
7
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 9 V
Data Converters
A/D 5x12b
Oscillator Type
External
Operating Temperature
-20°C ~ 85°C
Package / Case
36-LGA
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRSB200, ATAVRSB201
Minimum Operating Temperature
- 20 C
On-chip Adc
12 bit, 5 Channel
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.2.2
11.2.3
11.2.4
44
ATmega8HVA/16HVA
External Reset
Watchdog Reset
Brown-out Detection
5. When the internal reset goes low, software starts up and loads the VREF calibration reg-
Now the chip can operate normally, but writing to EEPROM in DUVR mode for single cell appli-
cations should be avoided.
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the
minimum pulse width (see
running. Shorter pulses are not guaranteed to generate a reset. When the applied signal
reaches the Reset Threshold Voltage – V
MCU after the Time-out period – t
Figure 11-3. External Reset During Operation
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 46
Figure 11-4. Watchdog Reset During Operation
ATmega8HVA/16HVA has an On-chip Brown-out Detection (BOD) circuit for monitoring the
V
hysteresis to ensure spike free Brown-out Detection. The hysteresis on the detection level
should be interpreted as V
REG
isters to get VREF = 1.100V. As the VREF voltage changes, VREG voltage and VFET
DUVR voltage will rise proportionally to VREF.
level during operation by comparing it to a fixed trigger level V
for details on operation of the Watchdog Timer.
FET
BOT+
Table 29-6 on page
= V
TOUT
BOT
– has expired.
+ V
CK
RST
HYST
– on its positive edge, the delay counter starts the
/2 and V
170) will generate a reset, even if the clock is not
BOT-
= V
BOT
- V
BOT
HYST
. The trigger level has a
/2.
TOUT
8024A–AVR–04/08
. Refer to
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