ST7FLIT19BF0B6 STMicroelectronics, ST7FLIT19BF0B6 Datasheet - Page 23
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ST7FLIT19BF0B6
Manufacturer Part Number
ST7FLIT19BF0B6
Description
IC MCU 8BIT 2K FLASH 20-DIP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST7FLIT15BY1M6.pdf
(159 pages)
Specifications of ST7FLIT19BF0B6
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Processor Series
ST7FLIT1x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
17
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Development Tools By Supplier
ST7FLITE-SK/RAIS, ST7FLIT1B-D/RAIS, ST7MDT10-DVP3, ST7MDT10-EMU3, STX-RLINK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 7 Channel
For Use With
497-6232 - BOARD EVAL ST7LITE1B,STP5NK60Z497-5049 - KIT STARTER RAISONANCE ST7FLITE
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
7 SUPPLY, RESET AND CLOCK MANAGEMENT
The device includes a range of utility features for
securing the application in critical situations (for
example in case of a power brown-out), and re-
ducing the number of external components.
Main features
■
■
■
7.1 INTERNAL RC OSCILLATOR ADJUSTMENT
The device contains an internal RC oscillator with
an accuracy of 1% for a given device, temperature
and voltage range (4.5V-5.5V). It must be calibrat-
ed to obtain the frequency required in the applica-
tion. This is done by software writing a 10-bit cali-
bration value in the RCCR (RC Control Register)
and in the bits 6:5 in the SICSR (SI Control Status
Register).
Whenever the microcontroller is reset, the RCCR
returns to its default value (FFh), i.e. each time the
device is reset, the calibration value must be load-
ed in the RCCR. Predefined calibration values are
stored in EEPROM for 3 and 5V V
ages at 25°C, as shown in the following table.
Clock Management
– 1 MHz internal RC oscillator (enabled by op-
– 1 to 16 MHz External crystal/ceramic resona-
– External Clock Input (enabled by option byte)
– PLL for multiplying the frequency by 8 or 4
– For clock ART counter only: PLL32 for multi-
Reset Sequence Manager (RSM)
System Integrity Management (SI)
– Main supply Low voltage detection (LVD) with
– Auxiliary Voltage detector (AVD) with interrupt
tion byte, available on ST7LITE15B and
ST7LITE19B devices only)
tor (selected by option byte)
(enabled by option byte)
plying the 8 MHz frequency by 4 (enabled by
option byte). The 8 MHz input frequency is
mandatory and can be obtained in the follow-
ing ways:
reset generation (enabled by option byte)
capability for monitoring the main supply (en-
abled by option byte)
–1 MHz RC + PLLx8
–16 MHz external clock (internally divided
–2 MHz. external clock (internally divided by
–Crystal oscillator with 16 MHz output fre-
by 2)
2) + PLLx8
quency (internally divided by 2)
DD
supply volt-
1. DEE0h, DEE1h, DEE2h and DEE3h addresses
are located in a reserved area of non-volatile
memory. They are read-only bytes for the applica-
tion code. This area cannot be erased or pro-
grammed by any ICC operation.
For compatibility reasons with the SICSR register,
CR[1:0] bits are stored in the 5th and 6th position
of DEE1 and DEE3 addresses.
Notes:
– In 38-pulse ICC mode, the internal RC oscillator
– See “ELECTRICAL CHARACTERISTICS” on
– To improve clock stability and frequency accura-
– These bytes are systematically programmed by
Caution: If the voltage or temperature conditions
change in the application, the frequency may need
to be recalibrated.
Refer to application note AN1324 for information
on how to calibrate the RC frequency using an ex-
ternal reference signal.
7.2 PHASE LOCKED LOOP
The PLL can be used to multiply a 1MHz frequen-
cy from the RC oscillator or the external clock by 4
or 8 to obtain f
bled and the multiplication factor of 4 or 8 is select-
ed by 2 option bits.
– The x4 PLL is intended for operation with V
RCCRH0 V
RCCRL0
RCCRH1 V
RCCRL1
is forced as a clock source, regardless of the se-
lection in the option byte. For ST7LITE10B devic-
es which do not support the internal RC
oscillator, the “option byte disabled” mode must
be used (35-pulse ICC mode entry, clock provid-
ed by the tool).
page 110. for more information on the frequency
and accuracy of the RC oscillator.
cy, it is recommended to place a decoupling ca-
pacitor, typically 100nF, between the V
V
ST, including on FASTROM devices.
the 2.7V to 3.3V range
RCCR
SS
pins as close as possible to the ST7 device.
T
f
T
f
RC
RC
A
A
DD
DD
Conditions
=25°C
=25°C
=1MHz
=1MHz
=5V
=3.3V
OSC
of 4 or 8 MHz. The PLL is ena-
DEE0h
DEE1h
DEE2h
DEE3h
ST7LITE1xB
1)
1)
1)
1)
Address
ST7LITE1xB
(CR[9:2])
(CR[1:0])
(CR[9:2])
(CR[1:0])
DD
and
23/159
DD
in
1