ATMEGA165-16AI Atmel, ATMEGA165-16AI Datasheet - Page 221

• Manufacturer Part Number: ATMEGA165-16AI
• Description: IC AVR MCU 16K 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA165-16AI

• 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: 54
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Scanning the ADC
2573G–AVR–07/09
Table 87. Boundary-scan Signals for the Analog Comparator
Figure 107 shows a block diagram of the ADC with all relevant control and observe sig-
nals. The Boundary-scan cell from Figure 103 is attached to each of these signals. The
ADC need not be used for pure connectivity testing, since all analog inputs are shared
with a digital port pin as well.
Figure 107. Analog to Digital Converter
The signals are described briefly in Table 88.
NEGSEL_2
NEGSEL_1
NEGSEL_0
MUXEN_7
MUXEN_6
MUXEN_5
MUXEN_4
MUXEN_3
MUXEN_2
MUXEN_1
MUXEN_0
Signal
Name
AC_IDLE
ACO
ACME
ACBG
EXTCH
ADC_7
ADC_6
ADC_5
ADC_4
ADC_3
ADC_2
ADC_1
ADC_0
ADC_2
ADC_0
ADC_1
Direction as
Seen from the
Comparator
input
output
input
input
SCTEST
AMPEN
ACLK
ST
To Comparator
+
-
1x
Description
Turns off Analog
Comparator when
true
Analog
Comparator Output
Uses output signal
from ADC mux
when true
Bandgap
Reference enable
ADCBGEN
VCCREN
IREFEN
AREF
PASSEN
ACTEN
1.22V
GNDEN
ref
1.11V
ref
Recommended
Input when Not
in Use
1
Will become
input to µC code
being executed
0
0
PRECH
DAC_9..0
ADCEN
HOLD
ATmega165/V
PRECH
AREF
10-bit DAC
Output Values when
Recommended
Inputs are Used
Depends upon µC
code being executed
0
Depends upon µC
code being executed
Depends upon µC
code being executed
AREF
+
-
DACOUT
COMP
COMP
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