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参数资料
| 型号： | L8229 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO24 |
| 封装： | LEAD FREE, SSO-24 |
| 文件页数： | 17/42页 |
| 文件大小： | 858K |
| 代理商： | L8229 |
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Obsolete
Product(s)
- Obsolete
Product(s)
L8229_0 and L8229_1 modes
L8229
8.2
SPI Bit definition
8.2.1
Word Description
Each of the 3 words used to program the chip when in L8229_0 or L8229_1 mode has the 3
LSB used to address the word as follows:
8.2.2
W0 (OPERATIVE: Bit 2=0, Bit 1=0)
This word is mainly used to fix the current level and direction in the bridge.
Table 18.
Word Description
BIT #
NAME
Value
DESCRIPTION
0
CHIP ADDRESS
0
This value addresses the word to chip #0 (if two L8229 are
present on the same board and a single nCS line is used).
Chip address is assigned by configuring the PROG bit
according to Table 2.
1
This value addresses the word to chip #1 (if two L8229 are
present on the same board and a single nCS line is used).
Chip address is assigned by configuring the PROG bit
according to Table 2.
1 and 2
WORD ADDRESS 1,
WORD ADDRESS 2
Bit 2
Bit 1
0
W0: OPERATIVE register
0
1
W1: PARAMETERS register
1
0
W2 : FUNCTIONAL register
1
Not allowed
Table 19.
W0
BIT #
NAME
RESET
VALUE
DESCRIPTION
0
CHIP ADDRESS
0
This bit is used to select if the informations provided by bits 1 to 15 are
referred to chip 0 or chip 1. This is useful in the case that two L8229 are
present on the same board and a single nCS line is used.
1
WORD ADDRESS 1
0
This is the LSB of the two bits used to address the word
2
WORD ADDRESS 2
0
This is the MSB of the two bits used to address the word
3
DAC1 BIT 1 (LSB)
0
LSB for DAC intended to regulate the current of Bridge 1
4
DAC1 BIT 2
0
BIT2 for DAC intended to regulate the current of Bridge 1
5
DAC1 BIT 3
0
BIT3 for DAC intended to regulate the current of Bridge 1
6
DAC1 BIT 4
0
BIT4 for DAC intended to regulate the current of Bridge 1
7
DAC1 BIT 5 (MSB)
0
MSB for DAC intended to regulate the current of Bridge 1
8
PHASE 1
0
Controls the direction of current flow for Bridge1.
A logic 0 level causes current flow from A (source) to B (sink).
9
DAC2 BIT1 (LSB)
0
LSB for DAC intended to regulate the current of Bridge 2
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