ST7MC2M9 STMicroelectronics, ST7MC2M9 Datasheet - Page 227

• Manufacturer Part Number: ST7MC2M9
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
• Manufacturer: STMicroelectronics

Specifications of ST7MC2M9

• 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

MOTOR CONTROLLER (Cont’d)
MOTOR
(MSCR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 = ZSV Z Event Sampling Validation when
MOE bit is reset
This bit enables/disables Z event sampling in ei-
ther mode (sampling at PWM frequency or at f
frequency selected by SCF[1:0] bits)
0: Z event sampling disabled
1: Z event sampling enabled
Bits 6:4 = Reserved, must be kept cleared.
Bits 3:2 = SCF[1:0] Sampling Clock Frequency
These bits select the sampling clock frequency
(f
SCF
ZSV
7
) used to count D & Z events.
6
0
SAMPLING
5
0
4
0
SCF1
CLOCK
3
SCF0
2
REGISTER
ECM
1
DISS
0
SCF
Table 82. Sampling Clock Frequency
Note: Times are indicated for 4 MHz f
Bit 1 = ECM: Encoder Capture Mode
This bit is used to select the source of events
which trigger the capture of the [MTIM:MTIML]
counter when using Encoder speed sensor (see
Figure
0: Real-time Clock interrupts
1: Read access on MTIM register
Bit 0 = DISS Data Input Selection
This setting is effective only if PCN=0, TES=00
and SR=0.
0: Unused MCIx inputs are grounded
1: Unused MCIx inputs are put in HiZ
SCF1
0
0
1
1
90).
SCF0
0
1
0
1
ST7MC1xx/ST7MC2xx
500 kHz (every 2µs)
250 kHz (every 4µs)
125 kHz (every 8µs)
1 MHz (every 1µs)
f
SCF
PERIPH
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