ST7MC2S6 STMicroelectronics, ST7MC2S6 Datasheet - Page 134
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ST7MC2S6
Manufacturer Part Number
ST7MC2S6
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 ST7MC2S6
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
LINSCI™ SERIAL COMMUNICATION INTERFACE (LIN Mode) (cont’d)
SCICR2 register is set, the LHDM bit selects the
Wake-Up method (replacing the WAKE bit).
0: LIN Synch Break Detection Method
1: LIN Identifier Field Detection Method
Bit 2 = LHIE LIN Header Interrupt Enable
This bit is set and cleared by software. It is only us-
able in LIN Slave mode.
0: LIN Header Interrupt is inhibited.
1: An SCI interrupt is generated whenever
Bit 1 = LHDF LIN Header Detection Flag
This bit is set by hardware when a LIN Header is
detected and cleared by a software sequence (an
access to the SCISR register followed by a read of
the SCICR3 register). It is only usable in LIN Slave
mode.
0: No LIN Header detected.
1: LIN Header detected.
Notes: The header detection method depends on
the LHDM bit:
Bit 0 = LSF LIN Synch Field State
This bit indicates that the LIN Synch Field is being
analyzed. It is only used in LIN Slave mode. In
Auto Synchronization Mode (LASE bit = 1), when
the SCI is in the LIN Synch Field State it waits or
counts the falling edges on the RDI line.
It is set by hardware as soon as a LIN Synch Break
is detected and cleared by hardware when the LIN
Synch Field analysis is finished (See
This bit can also be cleared by software to exit LIN
Synch State and return to idle mode.
0: The current character is not the LIN Synch Field
1: LIN Synch Field State (LIN Synch Field under-
134/309
1
LHDF = 1.
going analysis)
– If LHDM = 0, a header is detected as a LIN
– If LHDM = 1, a header is detected as a LIN
Synch Break.
Identifier, meaning that a LIN Synch Break
Field + a LIN Synch Field + a LIN Identifier
Field have been consecutively received.
Figure
72).
Figure 72. LSF Bit Set and Clear
LIN DIVIDER REGISTERS
LDIV is coded using the two registers LPR and LP-
FR. In LIN Slave mode, the LPR register is acces-
sible at the address of the SCIBRR register and
the LPFR register is accessible at the address of
the SCIETPR register.
LIN PRESCALER REGISTER (LPR)
Read/Write
Reset Value: 0000 0000 (00h)
LPR[7:0] LIN Prescaler (mantissa of LDIV)
These 8 bits define the value of the mantissa of the
LIN Divider (LDIV):
Caution: LPR and LPFR registers have different
meanings when reading or writing to them. Conse-
quently bit manipulation instructions (BRES or
BSET) should never be used to modify the
LPR[7:0] bits, or the LPFR[3:0] bits.
LPR7
LSF bit
11 dominant bits
7
LPR[7:0]
LIN Synch
FEh
FFh
00h
01h
Break
...
LPR6
LPR5
LIN Synch
Field
LPR4
Rounded Mantissa (LDIV)
SCI clock disabled
LPR3
parity bits
254
255
Identifier
Field
...
1
LPR2
LPR1
LPR0
0
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