ATmega88 Atmel Corporation, ATmega88 Datasheet - Page 48
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATmega88
Manufacturer Part Number
ATmega88
Description
Manufacturer
Atmel Corporation
Specifications of ATmega88
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
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)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega88-15AT
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega88-15AT1
Manufacturer:
ATMEL
Quantity:
1 000
Part Number:
ATmega88-15AT1
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega88-15ATI
Manufacturer:
ATMEL
Quantity:
5 510
Company:
Part Number:
ATmega88-15ATI
Manufacturer:
LT
Quantity:
5 510
Company:
Part Number:
ATmega88-15AZ
Manufacturer:
ATMEL
Quantity:
2 000
Company:
Part Number:
ATmega88-15AZ
Manufacturer:
ATMEL
Quantity:
120
Part Number:
ATmega88-15AZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega88-20AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
11.6
11.7
11.7.1
2545T–AVR–05/11
Watchdog system reset
Internal voltage reference
Voltage reference enable signals and start-up time
Figure 11-5. Brown-out reset during operation.
When the watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 49
Figure 11-6. Watchdog system reset during operation.
The Atmel ATmega48/88/168 features an internal bandgap reference. This reference is used for
brown-out detection, and it can be used as an input to the analog comparator or the ADC.
The voltage reference has a start-up time that may influence the way it should be used. The
start-up time is given in
erence is not always turned on. The reference is on during the following situations:
1. When the BOD is enabled (by programming the BODLEVEL [2:0] Fuses).
2. When the bandgap reference is connected to the analog comparator (by setting the
3. When the ADC is enabled.
ACBG bit in ACSR).
for details on operation of the watchdog timer.
CC
INTERNAL
TIME-OUT
RESET
RESET
V
CC
“System and reset characteristics” on page
V
CK
BOT-
V
t
ATmega48/88/168
TOUT
BOT+
307. To save power, the ref-
TOUT
. Refer to
48