ATmega162 Atmel Corporation, ATmega162 Datasheet - Page 48

• Manufacturer Part Number: ATmega162
• Manufacturer: Atmel Corporation

Specifications of ATmega162

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 35
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• 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: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 6
• Input Capture Channels: 2
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Power-on Reset
48
ATmega162/V
Figure 21. Reset Logic
Table 18. Reset Characteristics
Note:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the Start-up Reset, as well as to detect a failure in supply
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
when V
Symbol
V
V
t
RST
POT
RST
BODLEVEL [ 2..0]
CC
1. The Power-on Reset will not work unless the supply voltage has been below V
RESET
decreases below the detection level.
V
Parameter
Power-on Reset
Threshold Voltage (rising)
Power-on Reset
Threshold Voltage
(falling)
Voltage
Minimum pulse width on
RESET Pin
CC
RESET Pin Threshold
Table
(1)
18. The POR is activated whenever V
Pull-up Resistor
JTAG Reset
Register
FILTER
SPIKE
CC
rise. The RESET signal is activated again, without any delay,
CKSEL[3:0]
Reset Circuit
Reset Circuit
Reset Circuit
T
T
SUT[1:0]
Brown-out
Watchdog
Generator
Watchdog
A
A
Power-on
Oscillator
Condition
Timer
Clock
= -40 - 85°C
= -40 - 85°C
V
V
CC
CC
= 3V
= 3V
CK
MCU Control and Status
Register (MCUCSR)
0.1 V
DATA BUS
Min.
0.7
0.6
Delay Counters
CC
CC
is below the detection level. The
Typ.
1.0
0.9
0.9 V
Max.
1.4
1.3
2.5
TIMEOUT
CC
Units
POT
2513K–AVR–07/09
µs
V
V
V
(falling)