ST7MC1K4 STMicroelectronics, ST7MC1K4 Datasheet - Page 236
ST7MC1K4
Manufacturer Part Number
ST7MC1K4
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
Manufacturer
STMicroelectronics
Datasheet
1.ST7MC1K4.pdf
(309 pages)
Specifications of ST7MC1K4
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators and by-pass for external clock, clock security system.
Four Power Saving Modes
Halt, Active-Halt, Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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ST7MC1xx/ST7MC2xx
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
236/309
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
DDA
Figure
D1
REF-
and V
127.
D0
pins, with a
REF-
SSA
must
to
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