ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 303

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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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28.6
28.6.1
8271D–AVR–05/11
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
Table 28-12. No. of Words in a Page and No. of Pages in the EEPROM
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATmega48A/PA/88A/PA/168A/PA/328/P.
Pulses are assumed to be at least 250 ns unless otherwise noted.
In this section, some pins of the ATmega48A/PA/88A/PA/168A/PA/328/P are referenced by sig-
nal names describing their functionality during parallel programming, see
28-13. Pins not described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Figure 28-1. Parallel Programming
Note:
Device
ATmega168A
ATmega168PA
ATmega328
ATmega328P
V
CC
- 0.3V < AV
ATmega48A/PA/88A/PA/168A/PA/328/P
EEPROM
512bytes
512bytes
1Kbytes
1Kbytes
CC
Size
< V
Table
Table
RDY/BSY
CC
PAGEL
+12 V
BS1
XA0
XA1
BS2
WR
+ 0.3V, however, AV
OE
28-16.
28-15.
4bytes
4bytes
4bytes
4bytes
Page
Size
PD1
PD2
PD3
PD4
PD5
PD6
RESET
XTAL1
GND
PD7
PC2
PC[1:0]:PB[5:0]
PCWORD
EEA[1:0]
EEA[1:0]
EEA[1:0]
EEA[1:0]
CC
should always be within 4.5 - 5.5V
AVCC
VCC
+4.5 - 5.5V
+4.5 - 5.5V
Pages
No. of
128
128
256
256
DATA
PCPAGE
EEA[8:2]
EEA[8:2]
EEA[9:2]
EEA[9:2]
Figure 28-1
EEAMSB
and
8
8
9
9
Table
303

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