ATMEGA64-16MJ Atmel, ATMEGA64-16MJ Datasheet - Page 265

• Manufacturer Part Number: ATMEGA64-16MJ
• Description: IC MCU AVR 64K 5V 16MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64-16MJ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Scanning the ADC
2490Q–AVR–06/10
Figure 134
Boundary-scan cell from
used for pure connectivity testing, since all analog inputs are shared with a digital port pin as
well.
Figure 134. Analog to Digital Converter
The signals are described briefly in
NEGSEL_2
NEGSEL_1
NEGSEL_0
MUXEN_7
MUXEN_6
MUXEN_5
MUXEN_4
MUXEN_3
MUXEN_2
MUXEN_1
MUXEN_0
EXTCH
ADC_7
ADC_6
ADC_5
ADC_4
ADC_3
ADC_2
ADC_1
ADC_0
ADC_2
ADC_0
ADC_1
shows a block diagram of the ADC with all relevant control and observe signals. The
SCTEST
G10
AMPEN
ACLK
Figure 130
ST
TO COMPARATOR
+
-
10x
Table
is attached to each of these signals. The ADC need not be
ADCBGEN
G20
VCCREN
IREFEN
AREF
104.
PASSEN
+
-
20x
1.22V
Ref
GNDEN
ACTEN
2.56V
Ref
DAC_9..0
ADCEN
HOLD
AREF
PRECH
ATmega64(L)
10-bit DAC
AREF
+
-
DACOUT
COMP
265