ATA6613P-PLQW Atmel, ATA6613P-PLQW Datasheet - Page 19

• Manufacturer Part Number: ATA6613P-PLQW
• Description: MCU W/LIN TXRX REG WTCHDG 48-QFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6613P-PLQW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-QFN Exposed Pad
• Processor Series: ATA6x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 3-9.
3.3.24.2
9111H–AUTO–01/11
NTRIG
NRES
VCC
Worst Case Calculation with R
Timing Sequence with R
Undervoltage Reset
t
reset
= 4ms
The internal oscillator has a tolerance of 20%. This means that t
The worst case calculation for the watchdog period t
The ideal watchdog time t
t
t
t
t
t
t
A microcontroller with an oscillator tolerance of ±15% is sufficient to supply the trigger inputs
correctly.
Table 3-2.
2
1,min
2,min
wdmax
wdmin
wd
.
R
WD_OSC
= 29.3ms ±4.5ms (±15%)
120
k
34
51
91
= 0.8
= 0.8
= t
= t
1max
1min
WD_OSC
Oscillator
+ t
= 24.8ms
t
t
1
2
Period
t
Typical Watchdog Timings
19.61
33.54
42.84
osc
= 16.5ms, t
= 17.3ms, t
t
WO_OSC
2min
13.3
d
= 155ms
/µs
= 51k
t
= 16.5ms + 17.3ms = 33.8ms
trig
> 200ns
= 51k
t
1
264.80
338.22
t
154.8
wd
Lead
Time
= 20.6ms
d
105
1,max
2,max
/ms
is between the maximum t
= 1.2
= 1.2
Window
t
Closed
wd
20.64
35.32
45.11
t
14.0
1
/ms
t
2
t
t
1
2
= 21ms
= 24.8ms
= 26ms
Atmel ATA6612/ATA6613
Open Window
t
21.67
37.06
47.34
14.7
2
t
1
/ms
wd
1
is calculated as follows.
and the minimum t
from Microcontroller
1
t
2
and t
Trigger Period
t
29.32
50.14
64.05
Watchdog Reset
wd
19.9
2
/ms
can also vary by 20%.
t
nres
1
= 4ms
plus the minimum
Reset Time
t
nres
4
4
4
4
/ms
19