ST7PMC2S7B6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7PMC2S7B6

8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI™

STMicroelectronics 

ST7MC1xx/ST7MC2xx

MOTOR CONTROLLER (Cont’d)

10.6.13 Register Description

TIMER COUNTER REGISTER (MTIM)

Read /Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

T7 T6 T5 T4 T3 T2 T1 T0

Bits 7:0 = T[7:0]: MTIM Counter Value.

These bits contain the current value of the 8-bit up

counter. In Speed Measurement Mode, when us-

ing Encoder sensor and MTIM captures triggered

by SW (refer to Figure 102) a read access to MTIM

register causes a capture of the [MTIM:MTIML]

register pair to the [MZREG: MZPRV] registers.

TIMER COUNTER REGISTER LSB (MTIML)

Read /Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

TL7 TL6 TL5 TL4 TL3 TL2 TL1 TL0

Bits 7:0 = TL[7:0]: MTIM Counter Value LSB.

These bits contain the current value of the least

significant byte of the MTIM up counter, when

used in Speed Measurement Mode (i.e. as a 16-bit

timer)

CAPTURE Zn-1 REGISTER (MZPRV)

Read /Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

ZP7 ZP6 ZP5 ZP4 ZP3 ZP2 ZP1 ZP0

Bits 7:0 = ZP[7:0]: Previous Z Value or Speed

capture LSB.

These bits contain the previous captured BEMF

value (ZN-1) in Switched and Autoswitched mode

or the LSB of the captured value of the

[MTIM:MTIML] registers in Speed Sensor Mode.

CAPTURE Zn REGISTER (MZREG)

Read/Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

ZC7 ZC6 ZC5 ZC4 ZC3 ZC2 ZC1 ZC0

Bits 7:0 = ZC[7:0]: Current Z Value or Speed cap-

ture MSB.

These bits contain the current captured BEMF val-

ue (ZN) in Switched and Autoswitched mode or the

MSB of the captured value of the [MTIM:MTIML]

registers in Speed Sensor Mode. A read access to

MZREG in this case disable the Speed captures

up to MZPRV reading (refer to Section 10.6.7.5

Speed Measurement Mode on page 180).

COMPARE Cn+1 REGISTER (MCOMP)

Read/Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

DC7 DC6 DC5 DC4 DC3 DC2 DC1 DC0

Bits 7:0 = DC[7:0]: Next Compare Value.

These bits contain the compare value for the next

commutation (CN+1).

DEMAGNETIZATION REGISTER (MDREG)

Read/Write

Reset Value: 0000 0000 (00h)

7

6

5

4

3

2

1

0

DN7 DN6 DN5 DN4 DN3 DN2 DN1 DN0

Bits 7:0 = DN[7:0]: D Value.

These bits contain the compare value for simulat-

ed demagnetization (DN) and the captured value

for hardware demagnetization (DH) in Switched

and Autoswitched mode.

In Speed Sensor Mode, the register contains the

value used for comparison with MTIM registers to

generate a Speed Error event.

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