ATmega169P Automotive Atmel Corporation, ATmega169P Automotive Datasheet - Page 49

• Manufacturer Part Number: ATmega169P Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega169P Automotive

• Flash (kbytes): 16 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

9.2.2
7735B–AVR–12/07
External Reset
Figure 9-3.
Table 9-1.
Note:
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the
minimum pulse width (see
reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a reset.
When the applied signal reaches the Reset Threshold Voltage – V
delay counter starts the MCU after the Time-out period – t
Figure 9-4.
Symbol
V
V
V
V
POT
PORMAX
PORMIN
CCRR
INTERNAL
TIME-OUT
RESET
1. Before rising, the supply has to be between V
RESET
V
CC
CC
MCU Start-up, RESET Extended Externally
Power On Reset Specifications
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
External Reset During Operation
”System and Reset Characteristics” on page
V
POT
ATmega169P Automotive
V
RST
t
TOUT
PORMIN
(1)
TOUT
and V
– has expired.
0.01
Min
-0.1
1.1
0.8
PORMAX
RST
– on its positive edge, the
to ensure a Reset.
Typ
1.4
1.3
328) will generate a
Max
1.7
1.6
0.4
Units
V/ms
V
V
V
V
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