参数资料
型号: ST72141K2B3/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封装: 0.400 INCH, PLASTIC, SDIP-32
文件页数: 93/133页
文件大小: 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
62/133
MOTOR CONTROLLER (Cont’d)
8.1.4.4 Channel Manager
The channel manager consists of:
– A Phase State register with preload and polarity
function
– A multiplexer to direct the PWM to the odd and/
or even channel group
– A tristate buffer asynchronously driven by an
emergency input.
The block diagram is shown in Figure 39.
MPHST Phase State Register
A preload register enables software to asynchro-
nously update (during the previous commutation
interrupt routine for example) the channel configu-
ration for the next step: the OO[5:0] bits in the
MPHST register are copied to the Phase register
on a C event.
Table 25. Output State
Figure 39. Channel Manager Block Diagram
OP[5:0] bit
OO[5:0] bit
MCO[5:0] Pin
0
1 (OFF)
0
1
0-(PWM allowed)
1
0
0 (OFF)
1
1-(PWM allowed)
CFF bit
OO bits*
C
OE[5:0] bits
6
OS[2:0] bits*
Phasen Register*
SR bit
3
16-bit Timer PWM
Sampling frequency
DAC bit
Channel [5:0]
Current comparator
output
V
I
16-bit timer PWM
SQ
R
V0C1 bit
V
I
2.5-
μs
Filter
OP[5:0] bits
MOE bit
MCO
0
MCO2
MCO
4
MCO3
MCO5
MCO1
NMCES
x6
6
1
MPHST Register
MPOL Register
MCRB Register
MPAR Register
* = Preload register, changes taken into account at next C event.
MRCA Register
MCRA Register
Reg
C
DS,H
Z
events:
Commutation
BEFM Zero-crossing
End Of Demagnetization
E
Emergency Stop
Notes:
Updated/Shifted on R
Ratio Updated (+1 or -1)
Multiplier Overflow
R+/-
O
Current Mode
Voltage Mode
I
V
Regn
Updated with Regn+1 on C
1
2
Branch taken after C event
Branch taken after D event
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