ST7FLIT19BF0B6 STMicroelectronics, ST7FLIT19BF0B6 Datasheet - Page 35
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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
SYSTEM INTEGRITY MANAGEMENT (Cont’d)
7.6.4 Register Description
SYSTEM INTEGRITY (SI) CONTROL/STATUS REGISTER (SICSR)
Read/Write
Reset Value: 0110 0xx0 (6xh)
Bit 7 = LOCK32 PLL 32Mhz Locked Flag
This bit is set and cleared by hardware. It is set au-
tomatically when the PLL 32Mhz reaches its oper-
ating frequency
0: PLL32 not locked
1: PLL32 locked
Bits 6:5 = CR[1:0] RC Oscillator Frequency Ad-
justment bits
These bits, as well as CR[9:2] bits in the RCCR
register must be written immediately after reset to
adjust the RC oscillator frequency and to obtain an
accuracy of 1%. Refer to
Bit 4 = WDGRF Watchdog Reset flag
This bit indicates that the last Reset was generat-
ed by the Watchdog peripheral. It is set by hard-
ware (watchdog reset) and cleared by software
(reading the SICSR register or writing 0 to this bit)
or by an LVD Reset (to ensure a stable cleared
state of the WDGRF flag when the CPU starts).
Combined with the LVDRF flag information, the
flag description is given by the following table.
Bit 3 = LOCKED PLL Locked Flag
This bit is set and cleared by hardware. It is set au-
tomatically when the PLL reaches its operating fre-
quency.
0: PLL not locked
1: PLL locked
Bit 2 = LVDRF LVD reset flag
This bit indicates that the last Reset was generat-
ed by the LVD block. It is set by hardware (LVD re-
set) and cleared by software (by reading). When
LOCK
32
7
CR1 CR0
External RESET pin
RESET Sources
Watchdog
LVD
WDG
RF
LOCKED LVDRF AVDF AVDIE
section 7.3 on page
LVDRF
0
0
1
WDGRF
X
0
1
25.
0
the LVD is disabled by OPTION BYTE, the LVDRF
bit value is undefined.
Bit 1 = AVDF Voltage Detector Flag
This read-only bit is set and cleared by hardware.
If the AVDIE bit is set, an interrupt request is gen-
erated when the AVDF bit is set. Refer to
20
0: V
1: V
Bit 0 = AVDIE Voltage Detector Interrupt Enable
This bit is set and cleared by software. It enables
an interrupt to be generated when the AVDF flag is
set. The pending interrupt information is automati-
cally cleared when software enters the AVD inter-
rupt routine.
0: AVD interrupt disabled
1: AVD interrupt enabled
Application notes
The LVDRF flag is not cleared when another RE-
SET type occurs (external or watchdog), the
LVDRF flag remains set to keep trace of the origi-
nal failure.
In this case, a watchdog reset can be detected by
software while an external reset can not.
PLL TEST REGISTER (PLLTST)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 : PLLdiv2 PLL clock divide by 2
This bit is read or write by software and cleared by
hardware after reset. This bit will divide the PLL
output clock by 2.
0 : PLL output clock
1 : Divide by 2 of PLL output clock
Refer “Clock Management Block Diagram” on
page 26
Note : Write of this bit will be effective after 2 Tcpu
cycles (if system clock is 8mhz) else 1 cycle (if
system clock is 4mhz) i.e. effective time is 250ns.
Bit 6:0 : Reserved , Must always be cleared
PLLdiv2
and to
7
DD
DD
over AVD threshold
under AVD threshold
Section 7.6.2.1
0
0
0
for additional details.
0
0
ST7LITE1xB
0
Figure
35/159
0
0
1