AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 697

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

28.7.21
Name:
Access Type:
Offset:
Reset Value:
• FSOURCES: Force Discharge Current Sources
• GLEN: Global Enable
• INTVREFSEL: Internal Voltage Reference Select
• INTREFSEL: Internal Reference Select
• TRIM: Reference Current Trimming
• SOURCES: Enable Discharge Current Sources
32145A–12/2011
GLEN
31
23
15
7
-
When FSOURCES[n] is 0, the corresponding discharge current source behavior depends on SOURCES[n].
When FSOURCES[n] is 1, the corresponding discharge current source is forced to be enabled continuously. This is useful for
testing or debugging but should not be done during normal acquisition.
0: The current source module is globally disabled.
1: The current source module is globally enabled.
0: The voltage for the reference resistor is generated from the internal band gap circuit.
1: The voltage for the reference resistor is VDDIO/3.
0: The reference current flows through an external resistor on the DIS pin.
1: The reference current flows through the internal reference resistor.
This field is used to trim the discharge current. 0x00 corresponds to the minimum current value, and 0x1F corresponds to the
maximum current value.
When SOURCES[n] is 0, the corresponding discharge current source is disabled.
When SOURCES[n] is 1, the corresponding discharge current source is enabled at appropriate times during acquisition.
Discharge Current Source Register
30
22
14
6
-
-
DICS
Read/Write
0x5C
0x00000000
29
21
13
5
-
-
28
20
12
4
-
FSOURCES[7:0]
SOURCES[7:0]
27
19
11
3
-
TRIM
26
18
10
2
-
AT32UC3L0128/256
INTVREFSEL
25
17
9
1
INTREFSEL
24
16
8
0
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