AT90CAN64 Atmel Corporation, AT90CAN64 Datasheet - Page 310

• Manufacturer Part Number: AT90CAN64
• Manufacturer: Atmel Corporation

Specifications of AT90CAN64

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Can: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• 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: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

23.6.6
Figure 23-10. Analog to Digital Converter
310
AT90CAN32/64/128
Scanning the ADC
NEGSEL_2
NEGSEL_1
NEGSEL_0
MUXEN_7
MUXEN_6
MUXEN_5
MUXEN_4
MUXEN_3
MUXEN_2
MUXEN_1
MUXEN_0
EXTCH
ADC_7
ADC_6
ADC_5
ADC_4
ADC_3
ADC_2
ADC_1
ADC_0
ADC_2
ADC_0
ADC_1
Figure 23-10
The Boundary-scan cell from
not be used for pure connectivity testing, since all analog inputs are shared with a digital port pin
as well.
The signals are described briefly in
SCTEST
AMPEN
ACLK
ST
G10
To Comparator
shows a block diagram of the ADC with all relevant control and observe signals.
+
-
10x
ADCBGEN
VCCREN
G20
IREFEN
AREF
Figure 23-9
PASSEN
+
-
20x
1.22V
GNDEN
ref
ACTEN
Table
2.56V
ref
23-7.
is attached to each of these signals. The ADC need
PRECH
DAC_9..0
ADCEN
HOLD
10-bit DAC
PRECH
AREF
+
-
DACOUT
COMP
7679H–CAN–08/08