ATmega32M1 Atmel Corporation, ATmega32M1 Datasheet - Page 43
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ATmega32M1
Manufacturer Part Number
ATmega32M1
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32M1
Flash (kbytes)
32 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
27
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Can
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
Yes
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
2
Output Compare Channels
14
Input Capture Channels
1
Pwm Channels
10
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega32M1-15AD
Manufacturer:
ATMEL
Quantity:
1 448
Part Number:
ATmega32M1-15AD
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega32M1-AU
Manufacturer:
TYCO
Quantity:
210
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10.2.1
8209D–AVR–11/10
Power-on Reset
Figure 10-1. Reset Logic
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
V
well as to detect a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
when V
Figure 10-2. MCU Start-up, RESET Tied to V
CC
is below the detection level. The POR circuit can be used to trigger the start-up Reset, as
CC
BODLEVEL [2..0]
INTE R NAL
V
TIME -OUT
decreases below the detection level.
CC
R E S E T
R E S E T
“System and Reset Characteristics” on page
V
CCRR
Pull-up Resistor
V
Spike
Filter
V
V
R S T
PORMAX
PORMIN
CC
rise. The RESET signal is activated again, without any delay,
t
CKSEL[3:0]
TOUT
Power-on Reset
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CC
ATmega16M1/32M1/64M1
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
311. The POR is activated whenever
TIMEOUT
43
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