ST7MC2R6 STMicroelectronics, ST7MC2R6 Datasheet - Page 147

• Manufacturer Part Number: ST7MC2R6
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
• Manufacturer: STMicroelectronics

Specifications of ST7MC2R6

• 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)
Figure 77. Simplified MTC Block Diagram
[Z] : Back EMF Zero-crossing event
Z
[C] : Commutation event
C
(I): Current mode
(V): Voltage mode
n
n
: Time elapsed between two consecutive Z events
PWM MANAGER
: Time delayed after Z event to generate C event
WEIGHT
MEASUREMENT
DELAY
GENERATOR
WINDOW
or SPEED MEASURE UNIT (not represented)
12-bit counter
Phase W
Phase U
Phase V
DELAY = WEIGHT x Zn
DELAY MANAGER
(I)
(V)
CAPTURE Zn
Phase U
1
(I)
CURRENT
VOLTAGE
(V)
(V)
COMMUTE [C]
MODE
TIMER
MTIM
=?
PCN bit
BEMF ZERO-CROSSING
12-bit THREE-PHASE
U, V, W
Phases
BEMF=0
TACHO
INPUT DETECTION
PWM GENERATOR
CFAV bit
[Z]
Encoder Unit
DETECTOR
MANAGER
CHANNEL
OAON bit
Int/Ext
ST7MC1xx/ST7MC2xx
ADC
+
-
MCCREF
C
MCIA
MCIB
MCIC
MCVREF
MCO5
MCO4
MCO3
MCO2
MCO1
MCO0
NMCES
OAP
OAN
OAZ(MCCFI1)
MCCFI0
MCPWMU
MCPWMV
MCPWMW
(V)
(I)
R
147/309
3
V
DD
R
R
2
1
1