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)

Table 40. Step Frequency/Period Range (4MHz)

Step Ratio Bits

ST[3:0] in MPRSR

Register

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

Maximum

Step Frequency

23.5 kHz

11.7 kHz

5.88 kHz

2.94 kHz

1.47 kHz

735 Hz

367 Hz

183 Hz

91.9 Hz

45.9 Hz

22.9 Hz

11.4 Hz

5.74 Hz

2.87 Hz

1.43 Hz

0.718 Hz

Minimum

Step Frequency

7.85 kHz

3.93 kHz

1.96 kHz

980 Hz

490 Hz

245 Hz

123 Hz

61.3 Hz

30.7 Hz

15.4 Hz

7.66 Hz

3.83 Hz

1.92 Hz

0.958 Hz

0.479 Hz

0.240 Hz

Minimum

Step Period

42.5 μs

85 μs

170 μs

340 μs

680 μs

1.36 ms

2.72 ms

5.44 ms

10.9 ms

21.8 ms

43.6 ms

87 ms

174 ms

349 ms

697 ms

1.40 s

Maximum

Step Period

127.5 μs

255 μs

510 μs

1.02 ms

2.04 ms

4.08 ms

8.16 ms

16.32 ms

32.6 ms

65.2 ms

130 ms

261 ms

522 ms

1.04 s

2.08 s

4.17 s

Table 41. Modes of Accessing MTIM Timer-Related Registers

State of MCRA / MCRB / MPAR Register Bits

RST bit TES[1:0] SWA bit CKE bit

Mode

0

xx

x

0 Configuration Mode

0

00

0

1

Switched Mode

0

00

1

1 Autoswitched Mode

01

0

10

x

1 Speed Sensor Mode

11

Access to MTIM Timer Related Registers

Read Only

Access

Read / Write Access

MTIM, MTIML, MZPRV, MZREG,

MCOMP, MDREG, ST[3:0]

MCOMP, MDREG, MZREG, MZPRV

MTIM, ST[3:0]

RMI bit of MISR:

0: No action

1: Decrement ST[3:0]

RPI bit of MISR:

0: No action

1: Increment ST[3:0]

MTIM, ST[3:0]

MDREG, MCOMP, MZREG, MZPRV,

RMI, RPI bit of MISR:

Set by hardware, (increment ST[3:0])

Cleared by software

MDREG,MZREG, MZPRV,

MTIM, MTIML,

RMI, RPI bit of MISR, :

ST[3:0] Set by hardware, (increment or decre-

ment ST[3:0]), cleared by software.

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