ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 236
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ATmega32
Manufacturer Part Number
ATmega32
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32
Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega32-16AC
Manufacturer:
COMPAL
Quantity:
500
Part Number:
ATmega32-16AU
Manufacturer:
ATMEL
Quantity:
20 000
Part Number:
ATmega32-16PI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega32-16PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Table 91. Boundary-scan Signals for the ADC (Continued)
Note:
2503Q–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.
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 123
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
123. Make sure only one path is selected
Output Values when Recommended
Inputs are used, and CPU is not
Using the ADC
ATmega32(L)
0
0
1
0
0
0
1
1
0
0
0
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