ATMEGA32L-8AC Atmel, ATMEGA32L-8AC Datasheet - Page 234
![IC AVR MCU 32K LV 8MHZ COM44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA32L-8AC
Manufacturer Part Number
ATMEGA32L-8AC
Description
IC AVR MCU 32K LV 8MHZ COM44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32L-8AC
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
32
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
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA32L-8AC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Table 90. Boundary-scan Signals for the Analog Comparator
Scanning the ADC
Figure 123
Figure 122
inputs are shared with a digital port pin as well.
Figure 123. Analog to Digital Converter
The signals are described briefly in
2503Q–AVR–02/11
Signal
Name
AC_IDLE
ACO
ACME
ACBG
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
shows a block diagram of the ADC with all relevant control and observe signals. The Boundary-scan cell from
is attached to each of these signals. The ADC need not be used for pure connectivity testing, since all analog
ADC_2
ADC_0
ADC_1
Direction as Seen from
the Comparator
Input
Output
Input
Input
SCTEST
AMPEN
ACLK
G10
ST
Table
To Comparator
Description
Turns off Analog
comparator when true
Analog Comparator
Output
Uses output signal from
ADC mux when true
Bandgap Reference
enable
+
-
10x
91.
G20
ADCBGEN
VCCREN
IREFEN
AREF
PASSEN
+
-
20x
1.22V
GNDEN
ACTEN
ref
Recommended Input
when Not in Use
Will become input to µC
code being executed
2.56V
ref
1
0
0
PRECH
DAC_9..0
ADCEN
HOLD
PRECH
AREF
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
10-bit DAC
AREF
ATmega32(L)
+
-
DACOUT
COMP
234
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