ST7FMC1K2TC STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2TC Datasheet - Page 178
ST7FMC1K2TC
Manufacturer Part Number
ST7FMC1K2TC
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST7FMC1K2TC.pdf
(308 pages)
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Part Number:
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ST7MC1/ST7MC2
MOTOR CONTROLLER (Cont’d)
Table 40. Step Frequency/Period Range (4MHz)
Table 41. Modes of Accessing MTIM Timer-Related Registers
178/308
1
RST bit TES[1:0] SWA bit CKE bit
ST[3:0] in MPRSR
0
0
0
0
Step Ratio Bits
State of MCRA / MCRB / MPAR Register Bits
Register
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
xx
00
00
01
10
11
0
1
x
x
Step Frequency
Maximum
0.718 Hz
23.5 kHz
11.7 kHz
5.88 kHz
2.94 kHz
1.47 kHz
91.9 Hz
45.9 Hz
22.9 Hz
11.4 Hz
5.74 Hz
2.87 Hz
1.43 Hz
735 Hz
367 Hz
183 Hz
0
1
1
1
Speed Sensor Mode
Configuration Mode
Autoswitched Mode
Switched Mode
Mode
Step Frequency
Minimum
7.85 kHz
3.93 kHz
1.96 kHz
0.958 Hz
0.479 Hz
0.240 Hz
61.3 Hz
30.7 Hz
15.4 Hz
7.66 Hz
3.83 Hz
1.92 Hz
980 Hz
490 Hz
245 Hz
123 Hz
MTIM, MTIML,
MTIM, ST[3:0]
MTIM, ST[3:0]
Read Only
Access
ST[3:0]
Access to MTIM Timer Related Registers
Step Period
Minimum
1.36 ms
2.72 ms
5.44 ms
10.9 ms
21.8 ms
43.6 ms
42.5
Set by hardware, (increment or decre-
174 ms
349 ms
697 ms
170
340
680
MDREG, MCOMP, MZREG, MZPRV,
MCOMP, MDREG, MZREG, MZPRV
Set by hardware, (increment ST[3:0])
87 ms
1.40 s
85
ment ST[3:0]), cleared by software.
MTIM, MTIML, MZPRV, MZREG,
µ
µ
µ
µ
µ
s
MDREG,MZREG, MZPRV,
MCOMP, MDREG, ST[3:0]
s
s
s
s
RMI, RPI bit of MISR, :
Read / Write Access
RMI, RPI bit of MISR:
1: Decrement ST[3:0]
Cleared by software
1: Increment ST[3:0]
RMI bit of MISR:
RPI bit of MISR:
0: No action
0: No action
Step Period
Maximum
16.32 ms
127.5
1.02 ms
2.04 ms
4.08 ms
8.16 ms
32.6 ms
65.2 ms
130 ms
261 ms
522 ms
255
510
1.04 s
2.08 s
4.17 s
µ
µ
µ
s
s
s
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