ATTINY40-MMHR Atmel, ATTINY40-MMHR Datasheet - Page 106

• Manufacturer Part Number: ATTINY40-MMHR
• Description: MCU AVR 4KB FLASH 12MHZ 3X3 QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY40-MMHR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.3
106
Operation
ATtiny40
Figure 15-1. Analog to Digital Converter Block Schematic
In order to be able to use the ADC the Power Reduction bit, PRADC, in the Power Reduction
Register must be disabled. This is done by clearing the PRADC bit. See
tion Register” on page 31
The ADC is enabled by setting the ADC Enable bit, ADEN in ADCSRA. Voltage reference and
input channel selections will not go into effect until ADEN is set. The ADC does not consume
power when ADEN is cleared, so it is recommended to switch off the ADC before entering power
saving sleep modes.
ADC5
ADC5
ADC3
ADC3
ADC1
ADC1
ADC9
ADC9
ADC8
ADC8
ADC7
ADC7
ADC6
ADC6
ADC4
ADC4
ADC2
ADC2
ADC0
ADC0
ADC11
ADC11
ADC10
ADC10
V
CC
CC
TEMPERATURE
TEMPERATURE
REFERENCE
REFERENCE
INTERNAL
INTERNAL
SENSOR
SENSOR
8-BIT DATA BUS
AGND
ADMUX
ADMUX
DECODER
DECODER
for more details.
ADCSRB
ADCSRB
INPUT
INPUT
MUX
MUX
TRIGGER
TRIGGER
SELECT
SELECT
10-BIT DAC
10-BIT DAC
PRESCALER
PRESCALER
ADCSRA
ADCSRA
CONVERSION LOGIC
CONVERSION LOGIC
“PRR – Power Reduc-
SAMPLE & HOLD
SAMPLE & HOLD
COMPARATOR
COMPARATOR
-
+
ADCH+ADCL
ADCH+ADCL
8263A–AVR–08/10
ADC MUX OUTPUT
ADC MUX OUTPUT
ADC IRQ
ADC IRQ