ATMEGA64M1-15MZ Atmel, ATMEGA64M1-15MZ Datasheet - Page 241
ATMEGA64M1-15MZ
Manufacturer Part Number
ATMEGA64M1-15MZ
Description
MCU AVR 64KB FLASH 3PSC 32-VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA64M1-15MZ.pdf
(367 pages)
Specifications of ATMEGA64M1-15MZ
Package / Case
32-VQFN
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Eeprom Size
2K x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
4K x 8
Program Memory Size
64KB (64K x 8)
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Connectivity
CAN, LIN, SPI, UART/USART
Core Size
8-Bit
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATADAPCAN01
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Lead Free Status / Rohs Status
Details
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- Download datasheet (7Mb)
18.7
7647G–AVR–09/11
ADC Conversion Result
After the conversion is complete (ADIF is high), the conversion result can be found in the ADC
Result Registers (ADCL, ADCH).
For single ended conversion, the result is:
where V
Table 18-4 on page 245
0x3FF represents the selected reference voltage.
If differential channels are used, the result is:
where V
GAIN the selected gain factor and V
in two’s complement form, from 0x200 (-512d) through 0x1FF (+511d). Note that if the user
wants to perform a quick polarity check of the result, it is sufficient to read the MSB of the
result (ADC9 in ADCH). If the bit is one, the result is negative, and if this bit is zero, the result
is positive.
Table 82 shows the resulting output codes if the differential input channel pair (ADCn - ADCm)
is selected with a reference voltage of V
Figure 18-13. Differential Measurement Range
ADC
ADC
=
=
- V
IN
POS
V
---------------------------- -
----------------------------------------------------------------------------- -
REF
V
IN
is the voltage on the selected input pin and V
/Gain
POS
Figure 18-13
V
is the voltage on the positive input pin, V
REF
1023
–
V
NEG
V
REF
shows the decoding of the differential input range.
and
GAIN
Table 18-5 on page
Output Code
0x3FF
512
REF
0x1FF
0x000
0x200
Atmel ATmega16/32/64/M1/C1
the selected voltage reference. The result is presented
REF
0
.
246). 0x000 represents analog ground, and
NEG
REF
the voltage on the negative input pin,
the selected voltage reference (see
V
REF
/Gain
Differential Input
Voltage (Volts)
241
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