ST7FMC1K2TC STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2TC Datasheet - Page 235
ST7FMC1K2TC
Manufacturer Part Number
ST7FMC1K2TC
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST7FMC1K2TC.pdf
(308 pages)
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10.8 10-BIT A/D CONVERTER (ADC)
10.8.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is a 10-bit, successive approximation con-
verter with internal sample and hold circuitry. This
peripheral has up to 16 multiplexed analog input
channels (refer to device pin out description) that
allow the peripheral to convert the analog voltage
levels from up to 16 different sources.
The result of the conversion is stored in 2 8-bit
Data Registers. The A/D converter is controlled
through a Control/Status Register.
10.8.2 Main Features
■
■
■
■
■
■
Figure 127. ADC Block Diagram
10-bit conversion
Up to 16 channels with multiplexed input
2 software-selectable sample times
External positive reference voltage V
be independent from supply
Linear successive approximation
Data registers (DR) which contain the results
AIN0
AINx
AIN1
f
ADC
ANALOG
MUX
EOC PRSC1PRSC0 ADON
PRESCALER
ADCDRMSB
MCCBCR
4
REF+
ADCDRLSB
CS3
D9
can
CS2
ADSTS
D8
■
■
■
The block diagram is shown in
10.8.3 Functional Description
10.8.3.1 Analog References
V
ence voltage pins. Conversion accuracy may
therefore be impacted by voltage drops and noise
on these lines. V
mediate supply between V
change the conversion voltage range. V
be tied to V
plemented between V
typical value of 15k
10.8.3.2 Analog Power Supply
V
providing power to the converter part. They must
be tied to V
CS1
D7
ADCIE
REF+
DDA
Conversion complete status flag
Maskable interrupt
On/off bit (to reduce consumption)
0
CS0
and V
D6
and V
0
D5
DD
ADCCSR
SSA
SSA
REF-
0
and V
. An internal resistor bridge is im-
request
D4
REF+
are the supply and ground pins
are the high and low level refer-
IT
0
ANALOG TO DIGITAL
Ω
SS
D3
can be supplied by an inter-
REF+
CONVERTER
respectively.
0
D2
and V
0
ST7MC1/ST7MC2
DDA
Figure
D1
REF-
and V
127.
D0
pins, with a
REF-
235/308
SSA
must
to
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