ATMEGA64L-8MQR Atmel, ATMEGA64L-8MQR Datasheet - Page 265
ATMEGA64L-8MQR
Manufacturer Part Number
ATMEGA64L-8MQR
Description
MCU AVR 64KB FLASH 8MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA64L-8MQR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
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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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
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