ATMEGA3250-16AUR Atmel, ATMEGA3250-16AUR Datasheet - Page 73
ATMEGA3250-16AUR
Manufacturer Part Number
ATMEGA3250-16AUR
Description
MCU AVR 32K FLASH 16MHZ 100TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA325-16AUR.pdf
(362 pages)
Specifications of ATMEGA3250-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
69
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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2570M–AVR–04/11
• XCK/AIN0/PCINT2 – Port E, Bit 2
XCK, USART External Clock. The Data Direction Register (DDE2) controls whether the clock is
output (DDE2 set) or input (DDE2 cleared). The XCK pin is active only when the USART oper-
ates in synchronous mode.
AIN0 – Analog Comparator Positive input. This pin is directly connected to the positive input of
the Analog Comparator.
PCINT2, Pin Change Interrupt Source 2: The PE2 pin can serve as an external interrupt source.
• TXD/PCINT1 – Port E, Bit 1
TXD0, UART0 Transmit pin.
PCINT1, Pin Change Interrupt Source 1: The PE1 pin can serve as an external interrupt source.
• RXD/PCINT0 – Port E, Bit 0
RXD, USART Receive pin. Receive Data (Data input pin for the USART). When the USART
Receiver is enabled this pin is configured as an input regardless of the value of DDE0. When the
USART forces this pin to be an input, a logical one in PORTE0 will turn on the internal pull-up.
PCINT0, Pin Change Interrupt Source 0: The PE0 pin can serve as an external interrupt source.
Table 13-9
shown in
Table 13-9.
Note:
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
1. CKOUT is one if the CKOUT Fuse is programmed
Figure 13-5 on page
and
Overriding Signals for Alternate Functions PE7:PE4
PE7/PCINT7
0
0
CKOUT
1
CKOUT
clk
–
PCINT7 • PCIE0
1
PCINT7 INPUT
–
Table 13-10
I/O
(1)
(1)
relates the alternate functions of Port E to the overriding signals
66.
PE6/DO/
PCINT6
0
0
0
0
USI_THREE-
WIRE
DO
–
PCINT6 • PCIE0
1
PCINT6 INPUT
–
ATmega325/3250/645/6450
PE5/DI/SDA/
PCINT5
USI_TWO-WIRE
0
USI_TWO-WIRE
(SDA +
PORTE5) •
DDE5
USI_TWO-WIRE
• DDE5
0
0
(PCINT5 •
PCIE0) + USISIE
1
DI/SDA INPUT
PCINT5 INPUT
–
PE4/USCK/SCL/
PCINT4
USI_TWO-WIRE
0
USI_TWO-WIRE
(USI_SCL_HOL
D + PORTE4) •
DDE4
USI_TWO-WIRE
• DDE4
0
USITC
(PCINT4 •
PCIE0) + USISIE
1
USCKL/SCL
INPUT
PCINT4 INPUT
–
73
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