ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 245

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• 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: -40°C ~ 85°C
• Package / Case: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 24-5.
Note:
8155C–AVR–02/11
Signal
Name
MUXEN_2
MUXEN_1
MUXEN_0
NEGSEL_2
NEGSEL_1
NEGSEL_0
PASSEN
PRECH
SCTEST
ST
VCCREN
Incorrect setting of the switches in
choices to the S&H circuitry on the negative input of the output comparator in
from either one ADC pin, Bandgap reference source, or Ground.
Boundary-scan Signals for the ADC (Continued)
Direction as Seen
from the ADC
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
Input Mux bit 2
Input Mux bit 1
Input Mux bit 0
Input Mux for negative input for
differential signal, bit 2
Input Mux for negative input for
differential signal, bit 1
Input Mux for negative input for
differential signal, bit 0
Enable pass-gate of gain stages.
Precharge output latch of
comparator. (Active low)
Switch-cap TEST enable. Output
from x10 gain stage send out to
Port Pin having ADC_4
Output of gain stages will settle
faster if this signal is high first two
ACLK periods after AMPEN goes
high.
Selects Vcc as the ACC reference
voltage.
Figure 24-10
will make signal contention and may damage the part. There are several input
Recommended
Input when Not
in Use
0
0
1
0
0
0
1
1
0
0
0
Figure
24-10. Make sure only one path is selected
Output Values when Recommended
Inputs are used, and CPU is not
Using the ADC
ATmega32A
0
0
1
0
0
0
1
1
0
0
0
245