AT90S4433-8PI Atmel, AT90S4433-8PI Datasheet - Page 64
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AT90S4433-8PI
Manufacturer Part Number
AT90S4433-8PI
Description
IC MCU 4K FLSH 8MHZ A/D IT 28DIP
Manufacturer
Atmel
Series
AVR® 90Sr
Datasheet
1.AT90S4433-8AC.pdf
(126 pages)
Specifications of AT90S4433-8PI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
20
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Data Converters
A/D 6x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90S4433-8PI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Analog-to-Digital
Converter
Features
64
AT90S/LS4433
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The AT90S4433 features a 10-bit successive approximation ADC. The ADC is con-
nected to a 6-channel Analog Multiplexer, which allows each pin of Port C to be used as
an input for the ADC. The ADC contains a Sample and Hold Amplifier, which ensures
that the input voltage to the ADC is held at a constant level during conversion. A block
diagram of the ADC is shown in Figure 44.
The ADC has two separate analog supply voltage pins: AVCC and AGND. AGND must
be connected to GND, and the voltage on AVCC must not differ from V
±0.3V. See the section “ADC Noise Canceling Techniques” on page 70 for how to con-
nect these pins.
An external reference voltage must be applied to the AREF pin. This voltage must be in
the range 2.0 - AVCC.
Figure 44. Analog-to-Digital Converter Block Schematic
Reference
10-bit Resolution
±2 LSB Absolute Accuracy
0.5 LSB Integral Non-linearity
65 - 260 µs Conversion Time
Up to 15 kSPS
Six Multiplexed Input Channels
Rail-to-Rail Input Range
Free Run or Single Conversion Mode
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceler
Analog
External
Inputs
Voltage
8-BIT DATA BUS
CHANNEL
MUX
6-
+
10-BIT DAC
-
SAMPLE & HOLD
COMPARATOR
ADC MULTIPLEXER
SELECT (ADMUX)
ADC CTRL & STATUS
ADC CONVERSION
REGISTER (ADCSR)
COMPLETE IRQ
CONVERSION LOGIC
9
ADC DATA REGISTER
(ADCH/ADCL)
CC
1042H–AVR–04/03
more than
0