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L9374LF Datasheet(PDF) 4 Page - STMicroelectronics

Part # L9374LF
Description  Four channel valve driver
PDF  80 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9374LF Datasheet(HTML) 4 Page - STMicroelectronics

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Contents
L9374LF
4/80
DocID025414 Rev 1
5
Programmers guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.1
Command registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.1.1
Sync + Sync-trigger register (address 0) . . . . . . . . . . . . . . . . . . . . . . . . 57
5.1.2
Sync tolerance window (STW) register (address 1) . . . . . . . . . . . . . . . 58
5.1.3
Configuration register 1 (address 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.1.4
Fast switch-on (FSON) register (address 3) . . . . . . . . . . . . . . . . . . . . . 60
5.1.5
Duration registers (address 4 and 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.1.6
Duty cycle register (address 6 to 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.1.7
Current / duty cycle registers (address 10 to 13) . . . . . . . . . . . . . . . . . . 62
5.1.8
Configuration register 2 - current control / over-voltage threshold
(address 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
5.1.9
Configuration register 3 (CCV reset and load resistance values)
(address 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5.2
Status registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2.1
General status (address 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2.2
Output status Q1... Q4 (address 1 to 4) . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.2.3
VD (address 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.2.4
Output duty (address 6 and 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.2.5
ISAT-Qx (address 8 + 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
5.2.6
Reference diode voltage measurement (V_FWD) (address 10) . . . . . . 71
5.2.7
Sense resistor measurement (Rs) (address 11) . . . . . . . . . . . . . . . . . . 71
5.2.8
Current controller status register (CC-STATUS) (address 12) . . . . . . . . 72
5.2.9
Error average (address 13 + 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.2.10
Reserved (address 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6
Register block functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.1
Input command register block overview (MOSI data) . . . . . . . . . . . . . . . 74
6.2
Status register block overview (MISO data) . . . . . . . . . . . . . . . . . . . . . . . 76
7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79



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