ATMEGA325A-MU Atmel, ATMEGA325A-MU Datasheet - Page 85
ATMEGA325A-MU
Manufacturer Part Number
ATMEGA325A-MU
Description
IC MCU AVR 32K FLASH 64VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA325A-MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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13.3.6
8285B–AVR–03/11
Alternate Functions of Port H
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Table 13-14
shown in
Table 13-15. Overriding Signals for Alternate Functions in PG4:PG3
Port H is only present in ATmega3250A/3250PA/6450A/6450P. The alternate pin configuration
is as follows:
Table 13-16. Port H Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT23 – Port H, Bit 7
PCINT23, Pin Change Interrupt Source 23: The PH7 pin can serve as an external interrupt
source.
• PCINT22 – Port H, Bit 6
PCINT22, Pin Change Interrupt Source 22: The PH6 pin can serve as an external interrupt
source.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
Figure 13-5 on page
PG4/T0
0
0
0
1
0
0
–
0
0
T0 INPUT
–
and
Alternate Function
PCINT23(Pin Change Interrupt23)
PCINT22 (Pin Change Interrupt22)
PCINT21(Pin Change Interrupt21)
PCINT20(Pin Change Interrupt20)
PCINT19 (Pin Change Interrupt19)
PCINT18(Pin Change Interrupt18)
PCINT17(Pin Change Interrupt17)
PCINT16(Pin Change Interrupt16)
Table 13-15
relates the alternate functions of Port G to the overriding signals
74.
PG3/T1/
0
0
0
1
0
0
–
0
0
T1 INPUT
–
85
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