ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 233

• Manufacturer Part Number: ATmega16HVB
• Manufacturer: Atmel Corporation

Specifications of ATmega16HVB

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 17
• Ext Interrupts: 15
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• 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: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Figure 32-1. Two-wire serial bus timing.
32.14 SPI timing characteristics
Table 32-16. SPI timing parameters.
Note:
8042D–AVR–10/11
SCL
SDA
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
1. Refer to
t
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
SU;STA
”Serial programming” on page 207
(1)
See
details.
Figure 32-2 on page 234
t
HD;STA
t
t
of
LOW
t
HIGH
for serial programming requirements.
t
HD;DAT
Mode
Master
Master
Master
Master
Master
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
and
SPI interface timing requirements (Slave mode).234
t
LOW
4 • t
2 • t
t
Minimum
SU;DAT
ck
ck
10
20
20
t
ck
+ 40ns
+ 20ns
ATmega16HVB/32HVB
See
50% duty cycle
on page 106
0.5 • t
Figure 18-5
Typical
3.6
1.6
10
10
10
10
15
15
10
sck
t
SU;STO
t
r
Maximum
t
BUF
Units
ns
µs
ns
233
for