ST7FMC2S4TCE STMicroelectronics, ST7FMC2S4TCE Datasheet - Page 68
![IC MCU 8BIT 16K FLASH 44-LQFP](/photos/6/84/68458/497-44-tqfp_44-lqfp_sml.jpg)
ST7FMC2S4TCE
Manufacturer Part Number
ST7FMC2S4TCE
Description
IC MCU 8BIT 16K FLASH 44-LQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST7FMC2S4T6.pdf
(309 pages)
Specifications of ST7FMC2S4TCE
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
LINSCI, SPI
Peripherals
LVD, Motor Control PWM, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-LQFP
For Use With
497-8402 - BOARD EVAL COMPLETE INVERTER497-8400 - KIT IGBT PWR MODULE CTRL ST7MC497-6408 - BOARD EVAL BLDC SENSORLESS MOTOR497-4734 - EVAL KIT 3KW POWER DRIVER BOARD497-4733 - EVAL KIT 1KW POWER DRIVER BOARD497-4732 - EVAL KIT 300W POWER DRIVER BOARD497-4731 - EVAL KIT PWR DRIVER CONTROL BRD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST7FMC2S4TCE
Manufacturer:
STMicroelectronics
Quantity:
10 000
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- Download datasheet (6Mb)
ST7MC1xx/ST7MC2xx
ON-CHIP PERIPHERALS (Cont’d)
10.2.2 Functional Description
Counter
The free running 8-bit counter is fed by the output
of the prescaler, and is incremented on every ris-
ing edge of the clock signal.
It is possible to read or write the contents of the
counter on the fly by reading or writing the Counter
Access register (ARTCAR).
When a counter overflow occurs, the counter is
automatically reloaded with the contents of the
ARTARR register (the prescaler is not affected).
Counter clock and prescaler
The counter clock frequency is given by:
The timer counter’s input clock (f
7-bit programmable prescaler, which selects one
of the 8 available taps of the prescaler, as defined
by CC[2:0] bits in the Control/Status Register
(ARTCSR). Thus the division factor of the prescal-
er can be set to 2
This f
the EXCL bit of the ARTCSR register and can be
either the f
The clock input to the counter is enabled by the
TCE (Timer Counter Enable) bit in the ARTCSR
register. When TCE is reset, the counter is
stopped and the prescaler and counter contents
are frozen. When TCE is set, the counter runs at
the rate of the selected clock source.
Figure 39. Output compare control
68/309
1
COUNTER
f
INPUT
COUNTER
PWMx
PWMDCRx
OCRx
CPU
f
COUNTER
frequency source is selected through
or an external input frequency f
FDh
n
(where n = 0, 1,..7).
= f
INPUT
FEh
/ 2
FDh
ARTARR=FDh
CC[2:0]
INPUT
FFh
FDh
) feeds the
FDh
EXT
.
FEh
Counter and Prescaler Initialization
After RESET, the counter and the prescaler are
cleared and f
The counter can be initialized by:
– Writing to the ARTARR register and then setting
– Writing to the ARTCAR counter access register,
In both cases the 7-bit prescaler is also cleared,
whereupon counting will start from a known value.
Direct access to the prescaler is not possible.
Output compare control
The timer compare function is based on four differ-
ent comparisons with the counter (one for each
PWMx output). Each comparison is made be-
tween the counter value and an output compare
register (OCRx) value. This OCRx register can not
be accessed directly, it is loaded from the duty cy-
cle register (PWMDCRx) at each overflow of the
counter.
This double buffering method avoids glitch gener-
ation when changing the duty cycle on the fly.
the FCRL (Force Counter Re-Load) and the TCE
(Timer Counter Enable) bits in the ARTCSR reg-
ister.
FFh
INPUT
FEh
FDh
= f
CPU
FEh
.
FEh
FFh
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