ATmega644P Automotive Atmel Corporation, ATmega644P Automotive Datasheet - Page 329
ATmega644P Automotive
Manufacturer Part Number
ATmega644P Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega644P Automotive
Flash (kbytes)
64 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
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
1
Uart
2
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 125
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
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26.1
T
Note:
7674F–AVR–09/09
A
Symbol
V
V
V
V
V
V
V
V
I
I
R
R
V
I
t
IL
IH
ACLK
ACID
OL
OH
ACIO
IL
IL1
IL2
IH
IH1
IH2
= -40 C to 125 C, V
RST
PU
(5)
DC Characteristics
1. "Max" means the highest value where the pin is guaranteed to be read as low
2. "Min" means the lowest value where the pin is guaranteed to be read as high
3. Although each I/O port can sink more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state
4. Although each I/O port can source more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady
conditions (non-transient), the following must be observed:
1.)The sum of all IOL, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2.)The sum of all IOL, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3.)The sum of all IOL, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
4.)The sum of all IOL, for ports F0-F7 should not exceed 100 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
state conditions (non-transient), the following must be observed:
1)The sum of all IOH, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2)The sum of all IOH, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3)The sum of all IOH, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
Parameter
Input Low Voltage,Except
XTAL1 and Reset pin
Input Low Voltage,
XTAL1 pin
Input Low Voltage,
RESET pin
Input High Voltage,
Except XTAL1 and
RESET pins
Input High Voltage,
XTAL1 pin
Input High Voltage,
RESET pin
Output Low Voltage
Output High Voltage
Input Leakage
Current I/O Pin
Input Leakage
Current I/O Pin
Reset Pull-up Resistor
I/O Pin Pull-up Resistor
Analog Comparator
Input Offset Voltage
Analog Comparator
Input Leakage Current
Analog Comparator
Propagation Delay
CC
= 2.7V to 5.5V (unless otherwise noted)
(3)
(4)
,
,
V
V
V
V
V
V
I
I
I
I
V
(absolute value)
V
(absolute value)
V
V
V
V
V
V
Condition
OL
OL
OH
OH
CC
CC
CC
CC
CC
CC
CC
CC
CC
in
CC
in
CC
CC
= V
= V
= 20 mA, V
= 5 mA, V
= -20 mA, V
= -10 mA, V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 5.5V, pin low
= 5.5V, pin high
= 5V
= 5V
= 2.7V
= 4.0V
CC
CC
/2
/2
CC
CC
CC
CC
= 3V
= 5V
= 5V
= 3V
0.6V
0.7V
0.9V
Min.
-0.5
-0.5
-0.5
-50
4.1
2.3
30
20
CC
CC
CC
(2)
(2)
(2)
ATmega164P/324P/644P
Typ.
<10
750
500
V
V
V
0.3V
0.1V
0.3V
CC
CC
CC
Max.
0.8
0.5
60
50
40
50
1
1
+ 0.5
+ 0.5
+ 0.5
CC
CC
CC
(1)
(1)
(1)
Units
mV
µA
µA
nA
k
k
ns
V
V
V
V
V
V
V
V
329
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