ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 171

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

29.7
See
Table 29-7.
Note:
8024A–AVR–04/08
10
11
12
13
14
15
16
17
18
Figure 29-1 on page 171
1
2
3
4
5
6
7
8
9
SPI Timing Characteristics
1. Refer to
Description
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
Out to SCK
SCK to out
SCK to out high
SS low to out
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
SCK to out
SCK to SS high
SS high to tri-state
SS low to SCK
SPI Timing Parameters
”Serial Programming” on page 151
(1)
Figure 29-1. SPI Interface Timing Requirements (Master Mode)
and
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
Figure on page 172
MISO
MOSI
SCK
SCK
SS
for serial programming requirements.
6
4
MSB
Mode
Master
Master
Master
Master
Master
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
for details.
5
MSB
7
4 • t
2 • t
ck
ck
Min
...
10
20
20
t
+ 40 ns
+ 20 ns
ck
...
ATmega8HVA/16HVA
See
50% duty
0.5 • t
Typ
3.6
1.6
10
10
10
10
15
15
10
2
Figure
sck
LSB
1
LSB
2
Max
3
8
Units
ns
µs
ns
171