ATMEGA32M1-AU Atmel, ATMEGA32M1-AU Datasheet - Page 253
![MPU AVR 32K FLASH 20MHZ 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA32M1-AU
Manufacturer Part Number
ATMEGA32M1-AU
Description
MPU AVR 32K FLASH 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32M1-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
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 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA32M1-AU
Manufacturer:
TYCO
Quantity:
210
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22.2.2
22.2.3
22.3
22.3.1
8209D–AVR–11/10
Register Description
Voltage Reference for External Devices
Threshold Reference for Internal Analog Comparator
ADCSRB – ADC Control and Status Register B
An external resistor used in conjunction with the Current Source can be used as voltage refer-
ence for external devices. Using a resistor in serie with a lower tolerance than the Current
Source accuracy (≤2%) is recommended.
references using standard values of resistors.
An external resistor used in conjunction with the Current Source can be used as threshold refer-
ence for internal Analog Comparator (see
connected to AIN0 (negative Analog Compare input pin) as well as AIN1 (positive Analog Com-
pare input pin). Using a resistor in serie with a lower tolerance than the Current Source accuracy
(≤2%) is recommended.
using standard values of resistors.
Bit
Read/Write
Initial Value
• Bit 6 – ISRCEN: Current Source Enable
Set this bit to source a 100µA current to the AREF pin.
Clear this bit to disconnect.
• Bit 5 – AREFEN: Analog Reference pin Enable
Set this bit to connect the internal AREF circuit to the AREF pin.
Clear this bit to disconnect the internal AREF circuit from the AREF pin.
ADHSM
R/W
7
0
ISRCEN
R/W
Table 22-2 on page 252
6
0
AREFEN
R/W
5
0
“AC – Analog Comparator” on page
Table 22-2 on page 252
R
4
0
-
ATmega16M1/32M1/64M1
ADTS3
gives an example of threshold references
R/W
3
0
ADTS2
R/W
2
0
gives an example of voltage
ADTS1
R/W
1
0
254). This can be
ADTS0
R/W
0
0
ADCSRB
253
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