ATA6616-P3QW Atmel, ATA6616-P3QW Datasheet - Page 54

• Manufacturer Part Number: ATA6616-P3QW
• Description: TXRX MULTICHIP MOD LIN SIP 38QFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6616-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.5.2.6
54
Atmel ATA6616/ATA6617
External Clock
Figure 4-12. Low-frequency Crystal Oscillator Connections
When this oscillator is selected, start-up times are determined by the SUT fuses or by CSUT
field as shown in
Table 4-12.
To drive the device from this external clock source, CLKI should be driven as shown in
4-13. To run the device on an external clock, the CKSEL Fuses or CSEL field must be pro-
grammed as shown in
Figure 4-13. External Clock Drive Configuration
When this clock source is selected, start-up times are determined by the SUT Fuses or CSUT
field as shown in
high or low frequency Crystal Oscillator is not running
page
Notes:
CSUT1..0
SUT1..0
57.). The asynchronous timer is then able to enable this input.
00
01
10
11
1. Flash Fuse bits
2. CLKSELR register bits
3. These options should only be used if frequency stability at start-up is not important for the
(1)
(2)
application
Start-up Times for the Low Frequency Crystal Oscillator Clock Selection
Start-up Time from
Power-down/save
Table
Table 4-13
32K (32768) CK
1K (1024) CK
1K (1024) CK
Table 4-5 on page
4-12.
12 - 22pF capacitors may be necessary if parasitic
This external clock can be used by the asynchronous timer if the
impedance (pads, wires & PCB) is very low.
(3)
(3)
External
Signal
32.768KHz
Clock
Additional Delay from
~
C1 = 12 - 22pF
C2 = 12 - 22pF
Reset (Vcc = 5.0V)
49.
4.1ms
65ms
65ms
Reserved
(XTAL2)
(XTAL1)
(See ”Enable/Disable Clock Source” on
(CLKO)
CLKI
GND
XTAL2
XTAL1
GND
Fast rising power or BOD enabled
Stable frequency at start-up
Recommended Usage
Slowly rising power
9132D–AUTO–12/10
Figure