ATMEGA325P-20MUR Atmel, ATMEGA325P-20MUR Datasheet - Page 236
ATMEGA325P-20MUR
Manufacturer Part Number
ATMEGA325P-20MUR
Description
MCU AVR 32K FLASH 20MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA3250P-20AU.pdf
(364 pages)
Specifications of ATMEGA325P-20MUR
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)
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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23.5.4
236
ATmega325P/3250P
Scanning the Analog Comparator
The relevant Comparator signals regarding Boundary-scan are shown in
Boundary-scan cell from
described in
The Comparator need not be used for pure connectivity testing, since all analog inputs are
shared with a digital port pin as well.
Figure 23-6. Analog Comparator
Figure 23-7. General Boundary-scan cell Used for Signals for Comparator and ADC
From Analog Ciruitry
From Digital Logic/
Table
ADCEN
ACME
23-3.
ADC MULTIPLEXER
REFERENCE
BANDGAP
OUTPUT
Figure 23-7
Previous
From
Cell
ShiftDR
0
1
ACBG
ClockDR
is attached to each of these signals. The signals are
D
UpdateDR
Q
Next
Cell
To
ACD
D
G
Q
AC_IDLE
EXTEST
0
1
To Analog Circuitry/
To Digital Logic
ACO
Figure
8023F–AVR–07/09
23-6. The
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