CDC3205G-C Micronas, CDC3205G-C Datasheet - Page 111
CDC3205G-C
Manufacturer Part Number
CDC3205G-C
Description
Automotive Controller Family The Device is a Microcontroller For Use in Automotive Applications.the On-chip Cpu is an Arm Processor ARM7TDMI with 32-bit Data And Address Bus, Which Supports Thumb format Instructions.
Manufacturer
Micronas
Datasheet
1.CDC3205G-C.pdf
(260 pages)
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PRELIMINARY DATA SHEET
15.5. PLL/ERM
The PLL and ERM modules are operated on the internally
generated 2.5V BVDD supply voltage.
15.6. A/D Converter (ADC)
The Analog to Digital Converter allows the conversion of an
analog voltage ranging from AVSS to either one of three
external references VREF, VREF0, VREF1 (2.5 to 5V) or the
internal reference VREFINT (~2.5V), to a 10-bit digital value.
A multiplexer connects one of 16 analog input ports to the
ADC. A sample and hold circuit holds the analog voltage dur-
ing conversion. The duration of the sampling time is pro-
grammable.
Features
– 10-bit resolution.
Fig. 15–2:
15.6.1. Principle of Operation
After reset, the module is off (zero standby current). The
module is enabled by setting flag SR0.ADC. The user has to
Micronas
VREFINT
VREF
AVDD
AVSS
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
VREF0
VREF1
ADC Block Diagram
MUX
MUX
ADC-Block
Buf
Bypass
June 12, 2003; 6251-579-1PD
1
0
S&H
For details on operating this module please refer to section
“CPU and Clock System”.
– Successive approximation, charge balance type.
– 16 channel input multiplexer.
– Input buffering for high ohmic sources selectable.
– Sample and hold circuit.
– 4/8/16/32 s conversion selectable for optimum through-
– 2.5V internal reference (VREFINT) or
– Zero standby current
assure that the necessary VREFINT-set-up time has
elapsed.
Before starting a conversion, select input-buffer usage or
bypass with flag AD1.BUF. Note that the input buffer requires
put/accuracy balance.
2.5 to 5V external references (VREF, VREF0, VREF1)
selectable
A
D
en
10
4
2
2
AD0.REF
AD1.BUF
ADx.AN0 to AN9
AD0.EOC
AD0.TSAMP
SR0.ADC
AD0.CHANNEL
CDC 32xxG-C
109
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