ST7FLITE49K2B6 STMicroelectronics, ST7FLITE49K2B6 Datasheet - Page 129
ST7FLITE49K2B6
Manufacturer Part Number
ST7FLITE49K2B6
Description
IC MCU 8BIT 8K FLASH 32DIP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST7FLITE49K2T6TR.pdf
(245 pages)
Specifications of ST7FLITE49K2B6
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-SDIP (0.400", 10.16mm)
Processor Series
ST7FLITE4x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
384 B
Interface Type
I2C, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
24
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Development Tools By Supplier
ST7FLITE-SK/RAIS, ST7FLI49M-D/RAIS, STX-RLINK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 10 Channel
For Use With
497-8399 - BOARD EVAL ST7LITE49M/STLED316S497-5858 - EVAL BOARD PLAYBACK ST7FLITE
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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ST7LITE49K2
Note:
11.4.4
1
2
3
4
The OC
the following formula:
Equation 5
Where:
t =
f
PRESC
If the timer clock is an external clock the formula is:
Equation 6
Where:
t =
f
The output compare 2 event causes the counter to be initialized to FFFCh (see
The OCF1 and OCF2 bits cannot be set by hardware in PWM mode therefore the output
compare interrupt is inhibited.
The ICF1 bit is set by hardware when the counter reaches the OC2R value and can produce
a timer interrupt if the ICIE bit is set and the I bit is cleared.
In PWM mode the ICAP1 pin can not be used to perform input capture because it is
disconnected to the timer. The ICAP2 pin can be used to perform input capture (ICF2 can be
set and IC2R can be loaded) but the user must take care that the counter is reset each
period and ICF1 can also generates interrupt if ICIE is set.
When the pulse width modulation (PWM) and one pulse mode (OPM) bits are both set, the
PWM mode is the only active one.
Low power modes
Table 42.
CPU
EXT
Mode
Wait
Halt
=
=
=
i
R register value required for a specific timing application can be calculated using
No effect on 16-bit timer.
Timer interrupts cause the device to exit from Wait mode.
16-bit timer registers are frozen.
In Halt mode, the counter stops counting until Halt mode is exited. Counting resumes from
the previous count when the device is woken up by an interrupt with ‘exit from Halt mode’
capability or from the counter reset value when the device is woken up by a reset.
If an input capture event occurs on the ICAPi pin, the input capture detection circuitry is
armed. Consequently, when the device is woken up by an interrupt with ‘exit from Halt
mode’ capability, the ICFi bit is set, and the counter value present when exiting from Halt
mode is captured into the ICiR register.
OCiR =
signal or pulse period (in seconds)
external timer clock frequency (in hertz)
signal or pulse period (in seconds)
CPU clock frequency (in hertz)
timer prescaler factor (2, 4 or 8 depending on CC[1:0] bits, see
register 2 (TACR2) on page
Effect of low power modes on 16-bit timer
t
*
f
EXT
-5
OCiR value =
132)
Description
PRESC
t
*
f
CPU
- 5
On-chip peripherals
: Timer A control
Figure
129/245
67)
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