ATmega8535 Atmel Corporation, ATmega8535 Datasheet - Page 34

• Manufacturer Part Number: ATmega8535
• Manufacturer: Atmel Corporation

Specifications of ATmega8535

• Flash (kbytes): 8 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): 0.5
• 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: 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

Standby Mode
Extended Standby Mode
Table 14. Active Clock Domains and Wake-up Sources in the Different Sleep Modes.
Notes:
34
Sleep
Mode
Idle
ADC
Noise
Reduction
Power-
down
Power-
save
Standby
Extended
Standby
1. External Crystal or resonator selected as clock source
2. If AS
3. Only INT2 or level interrupt INT1 and INT0
(1)
(1)
ATmega8535(L)
clk
CPU
2
bit in ASSR is set
clk
Active Clock domains
FLASH
clk
X
IO
asynchronous timer should be considered undefined after wake-up in Power-save mode
if AS2 is 0.
This sleep mode basically halts all clocks except clk
chronous modules, including Timer/Counter2 if clocked asynchronously.
When the SM2..0 bits are 110 and an external crystal/resonator clock option is selected,
the SLEEP instruction makes the MCU enter Standby mode. This mode is identical to
Power-down with the exception that the Oscillator is kept running. From Standby mode,
the device wakes up in six clock cycles.
When the SM2..0 bits are 111 and an external crystal/resonator clock option is selected,
the SLEEP instruction makes the MCU enter Extended Standby mode. This mode is
identical to Power-save mode with the exception that the Oscillator is kept running.
From Extended Standby mode, the device wakes up in six clock cycles.
clk
X
X
ADC
clk
X
X
X
X
ASY
(2)
(2)
Enabled
Source
Clock
Main
X
X
X
X
Oscillators
Enabled
Timer
Osc
X
X
X
X
(2)
(2)
(2)
(2)
INT2
INT1
INT0
X
X
X
X
X
X
(3)
(3)
(3)
(3)
(3)
Address
Match
TWI
X
X
X
X
X
X
ASY
, allowing operation only of asyn-
Wake up sources
Timer
X
X
X
X
2
(2)
(2)
EEPROM
Ready
SPM/
X
X
2502K–AVR–10/06
A
D
C
X
X
Other
I/O
X