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参数资料
| 型号： | L99PD08 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQFP32 |
| 封装： | ROHS COMPLIANT, LQFP-32 |
| 文件页数： | 40/41页 |
| 文件大小： | 750K |
| 代理商： | L99PD08 |
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Pin definitions and functions
L99PD08
8/41
Doc ID 15872 Rev 3
Figure 2.
Pinning of device in LQFP-32 package
2.1
ST-SPI: SCK, SDI, SDO, CSN
A 16-bit SPI interface is used to control the device. The communication interface is activated
by pulling CSN to low. The SDI is captured with the positive edge of SCK and the data is
shifted out at SDO at the negative edge of SCK. A CSN timeout is implemented.
2.2
CLK_IN0, CLK_IN1
These pins are used to run the two internal PWM base frequency counters to generate the
output PWM.
Each channel can be programmed as steady state ON/OFF output or a PWM output
through the PWM_EN (Addr: hex03) SPI register. During PWM mode, the PWM signal can
be generated either from CLK_IN0 or CLK_IN1 as base counter, selected through the SPI
register CLK_SEL (Addr: hex04). Phase shift and duty cycle are set through the dedicated
registers DUTY_CHx (Addr: hex10 – hex17) and PHASE_CHx (Addr: hex18 – hex1F).
OUT0
ST
0
/CS0
OUT1
ST
1
/CS1
OUT2
ST
2
/CS2
OUT3
ST
3
/CS3
32
31
30
29
28
27
26
25
CLK_IN0
124
OUT4
CLK_IN1
223
ST4/CS4
GND
322
OUT5
VDDIO
421
ST5/CS5
FAULTN
520
OUT6
SYNC
619
ST6/CS6
MUX_ST/CS
718
OUT7
VCORE3
817
ST7/CS7
9
10
11
12
13
14
15
16
SCK
SDI
SDO
CSN
GND
EN
N.C
.
LHOMEN
PreDiag
Device
L99PD08
LQFP32
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