ATmega32A Atmel Corporation, ATmega32A Datasheet - Page 303

• Manufacturer Part Number: ATmega32A
• Manufacturer: Atmel Corporation

Specifications of ATmega32A

• 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

8155C–AVR–02/11
Table 27-3.
Figure 27-6. SPI Interface Timing Requirements (Master Mode)
Figure 27-7. SPI Interface Timing Requirements (Slave Mode)
13
14
15
16
17
18
(Data Output)
(Data Output)
(Data Input)
(Data Input)
(CPOL = 0)
(CPOL = 1)
(CPOL = 0)
(CPOL = 1)
SS high to tri-state
MISO
MOSI
MOSI
MISO
SCK
SCK
SCK
SCK
SCK to SS high
SS low to SCK
SS
SS
SPI Timing Parameters
Description
SCK to out
Setup
Hold
9
18
13
6
4
MSB
MSB
5
MSB
MSB
14
15
Mode
Slave
Slave
Slave
Slave
Slave
Salve
7
...
2 • t
...
...
...
Min
10
20
t
ck
ck
11
2
Typ
LSB
15
10
10
1
LSB
LSB
LSB
ATmega32A
11
2
12
3
16
8
Max
X
17
ns
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