AT90PWM2B Atmel Corporation, AT90PWM2B Datasheet - Page 23
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AT90PWM2B
Manufacturer Part Number
AT90PWM2B
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM2B
Flash (kbytes)
8 Kbytes
Pin Count
24
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
19
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
2
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
4
Output Compare Channels
12
Input Capture Channels
1
Pwm Channels
7
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM2B-16SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
9. Errata
9.1
4317JS–AVR–08/10
AT90PWM2&3 Rev. A (Mask Revision)
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1. PGM: PSCnRB Fuse
2. PSC: Prescaler
3. PSC: PAOCnA and PAOCnB Register Bits (Asynchronous output control)
4. PSC: PEVnA/B flag bits
PGM: PSCxRB Fuse
PSC: Prescaler
PSC: PAOCnA and PAOCnB Register Bits (Asynchronous output control)
PSC: PEVxA/B Flag Bits
PSC: Output Polarity in Centered Mode
PSC: Output Activity
VREF
DALI
DAC: Register Update
DAC: Output spikes
DAC driver: Output Voltage linearity
ADC: Conversion accuracy
Analog comparator: Offset value
Analog comparator: Output signal
PSC: Autolock modes
DALI: 17th bit detection
PSC: One ramp mode with PSC input mode 8
The use of PSCnRB fuse can make the parallel ISP fail.
Workaround:
When PSCnRB fuses are used, use the serial programming mode to load a new program
version.
The use of PSC's prescaler have the following effects :
It blocks the sample of PSC inputs until the two first cycles following the set of PSC run bit.
A fault is not properly transferred to other (slave) PSC.
Workaround:
Clear the prescaler PPREx bit when stopping the PSC (prun = 0), and set them to appropri-
ate value when starting the PSC (prun = 1), these bits are in the same PCTL register
Do not use the prescaler when a fault on one PSC should affect other PSC’s
These register bits are malfunctioning.
Workaround:
Do not use this feature.
These flags are set when a fault arises, but can also be set again during the fault itself.
Workaround:
Don't clear these flags before the fault disappears.
AT90PWM2/3/2B/3B
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