ATmega645P Atmel Corporation, ATmega645P Datasheet - Page 247
ATmega645P
Manufacturer Part Number
ATmega645P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega645P
Flash (kbytes)
64 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
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)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
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
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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8285D–AVR–06/11
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
Figure 25-8. General Boundary-scan cell Used for Signals for Comparator and ADC
Table 25-2.
Signal
Name
AC_IDLE
ACO
ACME
ACBG
From Analog Ciruitry
From Digital Logic/
Direction as
Seen from the
Comparator
input
output
input
input
Boundary-scan Signals for the Analog Comparator
Previous
From
Cell
Description
Turns off Analog
Comparator when
true
Analog Comparator
Output
Uses output signal
from ADC mux when
true
Bandgap Reference
enable
ShiftDR
0
1
ClockDR
D
UpdateDR
Q
Next
Cell
To
D
G
Recommended
Input when Not
in Use
1
Will become input
to µC code being
executed
0
0
Q
EXTEST
0
1
To Analog Circuitry/
To Digital Logic
Output Values when
Recommended Inputs
are Used
Depends upon µC code
being executed
0
Depends upon µC code
being executed
Depends upon µC code
being executed
247
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