ATmega64C1 Automotive Atmel Corporation, ATmega64C1 Automotive Datasheet - Page 47

• Manufacturer Part Number: ATmega64C1 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega64C1 Automotive

• Flash (kbytes): 64 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 27
• Ext Interrupts: 27
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Can: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

7.2.1
7647G–AVR–09/11
Power-on Reset
Figure 7-1.
Table 7-1.
Note:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection
level is defined in
The POR circuit can be used to trigger the start-up Reset, as well as to detect a failure in sup-
ply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
delay, when V
Symbol
V
V
V
V
V
POT
PORMAX
PORMIN
CCRR
RST
BODLEVEL [2..0]
1. Before rising, the supply has to be between
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
VCC Max. start voltage to ensure internal
Power-on Reset signal
VCC Min. start voltage to ensure internal
Power-on Reset signal
VCC Rise Rate to ensure Power-on Reset
RESET Pin Threshold Voltage
CC
Reset Logic
Reset Characteristics
decreases below the detection level.
Table
Pull-up Resistor
7-1. The POR is activated whenever V
Spike
Filter
CC
CKSEL[3:0]
Atmel ATmega16/32/64/M1/C1
Power-on Reset
rise. The RESET signal is activated again, without any
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CK
Register (MCUSR)
V
(1)
MCU Status
DATA BUS
PORMIN
Delay Counters
0.1 V
0.01
Min
-0.1
1.1
0.8
and V
CC
CC
PORMAX
is below the detection level.
Typ
1.4
0.9
TIMEOUT
to ensure a Reset.
0.9V
Max
1.7
1.6
0.4
CC
Units
V/ms
V
V
V
V
V
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