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STSPIN32G4 bảng dữ liệu(PDF) 30 Page - STMicroelectronics

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The READY output can be programmed to report one or more of the following conditions:
•
The VCC supply is below the undervoltage threshold.
•
Thermal shutdown.
•
Entering standby mode.
By default, the pin reports the standby and the VCC undervoltage condition (refer to Table 19).
5.5.3
nFAULT output
The nFAULT open-drain output indicates a critical failure condition. The output can be configured to report one or
more of the following failures:
•
The device performed a RESET (this signaling cannot be masked)
•
VDS monitoring protection is triggered
•
Thermal shutdown
•
The VCC supply is below the undervoltage threshold
By default, the nFAULT pin reports all above failures (refer to Table 20).
5.5.4
I2C interface
The internal registers are available through a standard IIC (I2C) interface supporting 7-bit addressing and
communication speed up to 1 Mbit/s (Fast mode Plus).
The 7-bit address of the device is fixed and equal to 1000111.
Table 16. I2C address
Device address
7
6
5
4
3
2
1
0
1
0
0
0
1
1
1
R/W bit
5.5.5
Registers
The configuration of the device is set through a list of 8-bit registers. Refer to the following tables for details.
Table 17. Power manager configuration register
Register
Bit #
Bit name
Default
Description
POWMNG
Address 0x01
Protected
7
0
6
REG3V3_DIS
0
3.3V linear regulator:
Enabled by default, 1 to disable
5
VCC_DIS
0
VCC buck regulator:
Enabled by default, 1 to disable
4
STBY_REG_EN
0
Standby linear regulator:
Disabled by default, 1 to enable
3
0
2
0
1
VCC_VAL
0
Set the output value for the VCC regulator:
•
00: VCC set to 8V (default)
•
01: VCC set to 10V
•
10: VCC set to 12V
•
11: VCC set to 15V
0
0
STSPIN32G4
Control logic
DS13630 - Rev 1
page 30/48



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