AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 298
AT90CAN128-16AE
Manufacturer Part Number
AT90CAN128-16AE
Description
8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
Manufacturer
ATMEL Corporation
Datasheet
1.AT90CAN128-16AE.pdf
(391 pages)
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Scanning the ADC
Figure 149. Analog to Digital Converter
298
AT90CAN128
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
SCTEST
AMPEN
ACLK
Figure 149 shows a block diagram of the ADC with all relevant control and observe sig-
nals. The Boundary-scan cell from Figure 148 is attached to each of these signals. The
ADC need 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 Table 110.
ST
G10
To Comparator
+
-
10x
ADCBGEN
VCCREN
G20
IREFEN
AREF
PASSEN
+
-
20x
1.22V
GNDEN
ACTEN
ref
2.56V
ref
ADHSM
PRECH
DAC_9..0
ADCEN
HOLD
10-bit DAC
PRECH
ADHSM
AREF
+
-
DACOUT
COMP
4250C–CAN–03/04
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