ATmega3250 Atmel Corporation, ATmega3250 Datasheet - Page 59
ATmega3250
Manufacturer Part Number
ATmega3250
Description
Manufacturer
Atmel Corporation
Specifications of ATmega3250
Flash (kbytes)
32 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
69
Ext Interrupts
25
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)
2
Eeprom (bytes)
1024
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
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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13.2.6
13.2.7
2570N–AVR–05/11
PCMSK1 – Pin Change Mask Register 1
PCMSK0 – Pin Change Mask Register 0
• Bit 7:0 – PCINT23:16: Pin Change Enable Mask 23..16
Each PCINT23:16 bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT23:16 is set and the PCIE2 bit in EIMSK is set, pin change interrupt is enabled on
the corresponding I/O pin. If PCINT23:16 is cleared, pin change interrupt on the corresponding
I/O pin is disabled.
Note:
• Bit 7:0 – PCINT15:8: Pin Change Enable Mask 15..8
Each PCINT15:8-bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT15:8 is set and the PCIE1 bit in EIMSK is set, pin change interrupt is enabled on the
corresponding I/O pin. If PCINT15:8 is cleared, pin change interrupt on the corresponding I/O
pin is disabled.
• Bit 7:0 – PCINT7:0: Pin Change Enable Mask 7..0
Each PCINT7:0 bit selects whether pin change interrupt is enabled on the corresponding I/O pin.
If PCINT7:0 is set and the PCIE0 bit in EIMSK is set, pin change interrupt is enabled on the cor-
responding I/O pin. If PCINT7:0 is cleared, pin change interrupt on the corresponding I/O pin is
disabled.
Bit
(0x6C)
Read/Write
Initial Value
Bit
(0x6B)
Read/Write
Initial Value
1. PCMSK3 and PCMSK2 are only present in ATmega3250/6450.
7
PCINT7
R/W
0
PCINT15
R/W
7
0
6
PCINT6
R/W
0
PCINT14
R/W
6
0
5
PCINT5
R/W
0
PCINT13
R/W
5
0
4
PCINT4
R/W
0
PCINT12
R/W
4
0
ATmega325/3250/645/6450
PCINT11
3
PCINT3
R/W
0
R/W
3
0
PCINT10
2
PCINT2
R/W
0
R/W
2
0
1
PCINT1
R/W
0
PCINT9
R/W
1
0
0
PCINT0
R/W
0
PCINT8
R/W
0
0
PCMSK0
PCMSK1
59
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