AT90PWM3B Atmel Corporation, AT90PWM3B Datasheet - Page 303
AT90PWM3B
Manufacturer Part Number
AT90PWM3B
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM3B
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
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 105
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
1
Pwm Channels
12
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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26.6
4317J–AVR–08/10
SPI Timing Characteristics
See
Table 26-4.
Note:
Figure 26-3. SPI Interface Timing Requirements (Master Mode)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 26-3
In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
CLCL
CLCL
SS high to tri-state
SCK to out high
SCK high/low
SCK to SS high
SS low to SCK
Rise/Fall time
Rise/Fall time
SCK high/low
SS low to out
SPI Timing Parameters
Description
MISO
MOSI
SCK period
SCK period
Out to SCK
SCK to out
SCK to out
for f
for f
SCK
SCK
and
SS
Setup
Setup
Hold
Hold
CK
CK
Figure 26-4
< 12 MHz
>12 MHz
(1)
6
4
MSB
5
for details.
MSB
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
7
4 • t
2 • t
2 • t
Min.
10
t
20
ck
...
ck
ck
ck
...
AT90PWM2/3/2B/3B
See
50% duty cycle
0.5 • t
Table 17-4
Typ.
3.6
10
10
15
10
10
15
10
2
sck
LSB
1
LSB
2
Max.
1.6
3
8
ns
303
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