AT90PWM3B Atmel Corporation, AT90PWM3B Datasheet - Page 255
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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21.10 Amplifier Control Registers
21.10.1
4317J–AVR–08/10
Amplifier 0 Control and Status register – AMP0CSR
The block diagram of the two amplifiers is shown on
Figure 21-18. Amplifiers block diagram
The configuration of the amplifiers are controlled via two dedicated registers AMP0CSR and
AMP1CSR. Then the start of conversion is done via the ADC control and status registers.
The conversion result is stored on ADCH and ADCL register which contain respectively the most
significant bits and the less significant bits.
Bit
Read/Write
Initial Value
AMP0EN AMP0IS AMP0G1 AMP0G0
AMP1EN AMP1IS AMP1G1 AMP1G0
AMP0+
AMP1+
AMP0-
AMP1-
AMP0EN
R/W
7
0
AMP0IS
Sampling
Sampling
R/W
Clock
Clock
6
0
AMP0G1
R/W
5
0
+
+
-
-
AMP0G0
AMP0CSR
AMP1CSR
R/W
4
0
00
01
10
01
00
01
10
01
-
-
Figure
3
0
-
-
AT90PWM2/3/2B/3B
ASY0
ASY1
ASY2
ASY0
ASY1
ASY2
ADCK/8
ADCK/8
21-18.
-
-
2
0
-
-
AMP0TS1AMP0TS0
AMP1TS1AMP1TS0
Toward ADC MU
Toward ADC MUX
AMP0TS1
R/W
1
0
(AMP1)
(AMP0)
AMP0TS0
R/W
0
0
AMP0CSR
255
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