ATmega168 Automotive Atmel Corporation, ATmega168 Automotive Datasheet - Page 5

• Manufacturer Part Number: ATmega168 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega168 Automotive

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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: 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: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

2.3
2.4
2.4.1
2.4.2
2.4.3
7530I–AVR–02/10
Comparison Between ATmega48, ATmega88, and ATmega168
Pin Descriptions
VCC
GND
Port B (PB7..0) XTAL1/
XTAL2/TOSC1/TOSC2
Table 2-1.
The ATmega48, ATmega88 and ATmega168 differ only in memory sizes, boot loader support,
and interrupt vector sizes.
for the three devices.
Table 2-2.
ATmega88 and ATmega168 support a real Read-While-Write Self-Programming mechanism.
There is a separate Boot Loader Section, and the SPM instruction can only execute from there.
In ATmega48, there is no Read-While-Write support and no separate Boot Loader Section. The
SPM instruction can execute from the entire Flash.
Digital supply voltage.
Ground.
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The
Port B output buffers have symmetrical drive characteristics with both high sink and source
capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up
resistors are activated. The Port B pins are tri-stated when a reset condition becomes active,
even if the clock is not running.
Depending on the clock selection fuse settings, PB6 can be used as input to the inverting Oscil-
lator amplifier and input to the internal clock operating circuit.
-40 ; +85
-40 ; +105
-40 ; +125
Device
ATmega48
ATmega88
ATmega168
Temperature
Temperature Grade Identification for Automotive Products
Memory Size Summary
Flash
4K Bytes
8K Bytes
16K Bytes
Temperature
Identifier
T1
Table 2-2
Z
T
EEPROM
256 Bytes
512 Bytes
512 Bytes
summarizes the different memory and interrupt vector sizes
ATmega48/88/168 Automotive
Similar to Industrial Temperature Grade but with Automotive
Quality
Reduced Automotive Temperature Range
Full AutomotiveTemperature Range
RAM
512 Bytes
1K Bytes
1K Bytes
Comments
Interrupt Vector Size
1 instruction word/vector
1 instruction word/vector
2 instruction words/vector
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