ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 556

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ATmega168A

Manufacturer Part Number
ATmega168A
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168A

Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
20 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
Yes
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
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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35.8
35.8.1
35.8.2
35.8.3
35.8.4
8271D–AVR–05/11
Errata ATmega328P
Rev D
Rev C
Rev B
Rev A
The revision letter in this section refers to the revision of the ATmega328P device.
1.
Not sampled.
1.
2. Unstable 32kHz Oscillator
1. Unstable 32kHz Oscillator
Analog MUX can be turned off when setting ACME bit
Analog MUX can be turned off when setting ACME bit
Unstable 32kHz Oscillator
Unstable 32kHz Oscillator
Analog MUX can be turned off when setting ACME bit
If the ACME (Analog Comparator Multiplexer Enabled) bit in ADCSRB is set while MUX3 in
ADMUX is '1' (ADMUX[3:0]=1xxx), all MUX'es are turned off until the ACME bit is cleared.
Problem Fix/Workaround
Clear the MUX3 bit before setting the ACME bit.
Analog MUX can be turned off when setting ACME bit
If the ACME (Analog Comparator Multiplexer Enabled) bit in ADCSRB is set while MUX3 in
ADMUX is '1' (ADMUX[3:0]=1xxx), all MUX'es are turned off until the ACME bit is cleared.
Problem Fix/Workaround
Clear the MUX3 bit before setting the ACME bit.
The 32kHz oscillator does not work as system clock. The 32kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.
The 32kHz oscillator does not work as system clock. The 32kHz oscillator used as asyn-
chronous timer is inaccurate.
Problem Fix/ Workaround
None.
ATmega48A/PA/88A/PA/168A/PA/328/P
556

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